for Quaternary marine primary productivity, Nature, 383, 63–65, https://doi.org/10.1038/383063a0, 1996.

Hartnett, H. E., Keil, R. G., Hedges, J. I., and Devol, A. H.: Influence of oxygen exposure time on organic carbon preservation in continental margin sediments, Nature, 391, 572–574, https://doi.org/10.1038/35351, 1998.

Hashim, M. S., Burke, J. E., Hardisty, D. S., and Kaczmarek, S. E.: Iodine incorporation into dolomite: Experimental constraints and implications for the iodine redox proxy and Proterozoic Ocean, Geochim. Cosmochim. Ac., 338, 365–381, https://doi.org/10.1016/j.gca.2022.10.027, 2022.

Hastings, D. W., Emerson, S. R., and Mix, A. C.: Vanadium in foraminiferal calcite as a tracer for changes in the areal extent of reducing sediments, Palecean. Paleoclim., 11, 665–678, https://doi.org/10.1029/96PA01985, 1996.

Hayes, C. T., Anderson, R. F., Cheng, H., Conway, T. M., Edwards, R. L., Fleisher, M. Q., Ho, P., Huang, K. F., John, S. G., Landing, W. M., Little, S. H., Lu, Y., Morton, P. L., Moran, S. B., Robinson, L. F., Shelley, R. U., Shiller, A. M., and Zheng, X. Y.: Replacement times of a spectrum of elements in the North Atlantic based on Thorium supply, Global Biogeochem. Cy., 32, 1294–1311, https://doi.org/10.1029/2017GB005839, 2018.

Hayes, C. T., Costa, K. M., Anderson, R. F., Calvo, E., Chase, Z., Demina, L. L., Dutay, J., German, C. R., Heimbürger-Boavida, L., Jaccard, S. L., Jacobel, A., Kohfeld, K. E., Kravchishina, M. D., Lippold, J., Mekik, F., Missiaen, L., Pavia, F. J., Paytan, A., Pedrosa-Pamies, R., Petrova, M. V., Rahman, S., Robinson, L. F., Roy-Barman, M., Sanchez-Vidal, A., Shiller, A., Tagliabue, A., Tessin, A. C., van Hulten, M., and Zhang, J.: Global Ocean Sediment Composition and Burial Flux in the Deep Sea, Glob. Biogeochem. Cycles, 35, e2020GB006769, https://doi.org/10.1029/2020GB006769, 2021.

Hazel, J. R. and Williams, E. E.: The role of alterations in membrane lipid composition in enabling physiological adaptation of organisms to their physical environment, Prog. Lipid Res., 29, 167–227, https://doi.org/10.1016/0163-7827(90)90002-3, 1990.

He, Y., Gao, C., Wei, W., and Liu, Y.: Density Functional Theory Calculations of Equilibrium Mo Isotope Fractionation Factors among MoO × S₄⁻ × 2⁻-Species in the Aqueous Phase by the ONIOM Method, ACS Earth Space Chem., 7, 142–155, https://doi.org/10.1021/acsearthspacechem.2c00268, 2022.

Hebting, Y., Schaeffer, P., Behrens, A., Adam, P., Schmitt, G., Schneckenburger, P., Bernasconi, S.M., and Albrecht, P.: Biomarker Evidence for a Major Preservation Pathway of Sedimentary Organic Carbon, Science, 312, 1627–1631, https://doi.org/10.1126/science.1126372, 2006.

Hecht, A. D., Eslinger, E. V., and Garmon, L. B.: Experimental studies on the dissolution of planktonic foraminifera, in: Dissolution of Deep-sea Carbonates, edited by: Sliter, W. V., Bé, A. W. H., and Berger W. H., Cushman Found. Foraminiferal Res., 13, New York, USA, 56–69, ISBN-e: 9781970168075, 1975.

Hedges, J. I. and Keil, R. G.: Sedimentary organic matter preservation: an assessment and speculative synthesis, Mar. Chem., 49, 81–115, https://doi.org/10.1016/0304-4203(95)00008-F, 1995.

Heggie, D., Kahn, D., and Fischer, K.: Trace metals in metalliferous sediments, MANOP Site M: interfacial pore water profiles, Earth Planet. Sc. Lett., 80, 106–116, https://doi.org/10.1016/0012-821X(86)90023-3, 1986.

Heinz, P. and Hemleben, Ch.: Regional and seasonal variations of recent benthic deep-sea foraminifera in the Arabian Sea, Deep-Sea Res. Pt. I, 50, 435–447, https://doi.org/10.1016/S0967-0637(03)00014-1, 2003.

Helz, G. R.: The Re/Mo redox proxy reconsidered, Geochim. Cosmochim. Ac., 317, 507–522, https://doi.org/10.1016/j.gca.2021.10.029, 2022.

Helz, G. R., Miller, C. V., Charnock, J. M., Mosselmans, J. F. W., Pattrick, R. A. D., Garner, C. D., and Vaughan, D. J.: Mechanism of molybdenum removal from the sea and its concentration in black shales: EXAFS evidence, Geochim. Cosmochim. Ac., 60, 3631–3642, https://doi.org/10.1016/0016-7037(96)00195-0, 1996.

Helz, G. R. and Dolor, M. K.: What regulates rhenium deposition in euxinic basins?, Chem. Geol., 304, 131–141, https://doi.org/10.1016/j.chemgeo.2012.02.011, 2012.

Helz, G. R. and Vorlicek, T. P.: Precipitation of molybdenum from euxinic waters and the role of organic matter, Chem. Geol., 509, 178–193, https://doi.org/10.1016/j.chemgeo.2019.02.001, 2019.

Hemingway, J. D., Kusch, S., Walter, S. R. S., Polik, C. A., Elling, F. J., and Pearson, A.: A novel method to measure the ¹³C composition of intact bacteriophanopolyols, Org. Geochem., 123, 144–147, https://doi.org/10.1016/j.orggeochem.2018.07.002, 2018.

Hemingway, J. D., Rothman, D. H., Grant, K. E., Rosengard, S. Z., Eglinton, T. I., Derry, L. A., and Galy, V. V.: Mineral protection regulates long-term global preservation of natural organic carbon, Nature, 570, 228–231, https://doi.org/10.1038/s41586-019-1280-6, 2019.

Hemleben, C., Spindler, M., and Anderson, O. R.: Modern Planktonic Foraminifera, Springer New York, New York, NY, https://doi.org/10.1007/978-1-4612-3544-6, 1989.

Hendy, I. L., Pedersen, T. F., Kennett, J. P., and Tada, R. L.: Intermittent existence of a southern Californian upwelling cell during submillennial climate change of the past 60 kyr, Palecean. Paleoclim., 19, PA3007, https://doi.org/10.1029/2003PA000965, 2004.

Hepach, H., Hughes, C., Hogg, K., Collings, S., and Chance, R.: Senescence as the main driver of iodide release from a diverse range of marine phytoplankton, Biogeosciences, 17, 2453–2471, https://doi.org/10.5194/bg-17-2453-2020, 2020.

Herbert, T. D., Lawrence, K. T., Tzanova, A., Peterson, L. C., Caballero-Gill, R., and Kelly, C. S.: Late Miocene global cooling and the rise of modern ecosystems, Nat. Geosci., 9, 843–847, https://doi.org/10.1038/ngeo2813, 2016.

Hermelin, J. O. R. and Shimmield, G. B.: The importance of the oxygen minimum zone and sediment geochemistry in the distribution of Recent benthic foraminifera in the northwest Indian Ocean, Mar. Geol., 91, 1–29, https://doi.org/10.1016/0025-3227(90)90130-C, 1990.

Hernandez-Sanchez, M. T., Homoky, W. B., and Pancost, R. D.: Occurrence of 1-*O*-monoalkyl glycerol ether lipids in ocean waters and sediments, Org. Geochem., 66, 1–13, https://doi.org/10.1016/j.orggeochem.2013.10.003, 2014.

Hess, A. V., Auderset, A., Rosenthal, Y., Miller, K. G., Zhou, X., Sigman, D. M., and Martínez-García, A.: A well-oxygenated eastern tropical Pacific during the warm Miocene, Nature, 619, 521–525, https://doi.org/10.1038/s41586-023-06104-6, 2023.

Higgins, M. B., Robinson, R. S., Carter, S. J., and Pearson, A.: Evidence from chlorin nitrogen isotopes for alternating nutrient
regimes in the Eastern Mediterranean Sea, Earth Planet. Sc. Lett., 290, 102–107, https://doi.org/10.1016/j.epsl.2009.12.009, 2010.

Higgins, M. B., Robinson, R. S., Husson, J. M., Carter, S. J., and Pearson, A.: Dominant eukaryotic export production during ocean anoxic events reflects the importance of recycled $NH_4^+$, P. Natl. Acad. Sci. USA, 109, 2269–2274, https://doi.org/10.1073/pnas.1104313109, 2012.

Hinrichs, K.-U., Pancost, R. D., Summons, R. E., Sprott, G. D., Sylva, S. P., Sinninghe Damsté, J. S., and Hayes, J. M.: Mass spectra of *sn*-2-hydroxyarchaeol, a polar lipid biomarker for anaerobic methanotrophy, Geochem. Geophy. Geosy., 1, 2000GC000042, https://doi.org/10.1029/2000gc000042, 2000.

Hinrichs, K.-U., Hmelo, L. R., and Sylva, S. P.: Molecular fossil record of elevated methane levels in Late Pleistocene coastal waters, Science, 299, 1214–1217, https://doi.org/10.1126/science.1079601, 2003.

Hlohowskyj, S., Chappaz, A., and Dickson, A. (Eds.): Molybdenum as a Paleoredox Proxy: Past, Present, and Future (Elements in Geochemical Tracers in Earth System Science), Cambridge: Cambridge University Press, United kingdom, ISBN 9781108993777, 2021.

Ho, P., Lee, J.-M., Heller, M. I., Lam, P. J., and Shiller, A. M.: The distribution of dissolved and particulate Mo and V along the U.S. GEOTRACES East Pacific Zonal Transect (GP16): The roles of oxides and biogenic particles in their distributions in the oxygen deficient zone and the hydrothermal plume, Mar. Chem., 201, 242–255, https://doi.org/10.1016/j.marchem.2017.12.003, 2018.

Høgslund, S., Revsbech, N. P., Cedhagen, T., Nielsen, L. P., and Gallardo, V. A.: Denitrification, nitrate turnover, and aerobic respiration by benthic foraminiferans in the oxygen minimum zone off Chile, J. Exp. Mar. Biol. Ecol., 359, 85–91, https://doi.org/10.1016/j.jembe.2008.02.015, 2008.

Hoogakker, B. A. A., Elderfield, H., Schmiedl, G., McCave, I. N., and Rickaby, R. E. M.: Glacial–interglacial changes in bottom-water oxygen content on the Portuguese margin, Nat. Geosci., 8, 40–43, https://doi.org/10.1038/ngeo2317, 2015.

Hoogakker, B. A. A., Thornalley, D. J. R., and Barker, S.: Millennial changes in North Atlantic oxygen concentrations, Biogeo sciences, 13, 211–221, https://doi.org/10.5194/bg-13-211-2016, 2016.

Hoogakker, B. A. A., Lu, Z., Umling, N., Jones, L., Zhou, X., Rickaby, R. E. M., Thunell, R., Cartapanis, O., and Galbraith, E.: Glacial expansion of oxygen-depleted seawater in the eastern tropical Pacific, Nature, 562, 410–413, https://doi.org/10.1038/s41586-018-0589-x, 2018.

Hopmans, E. C., Smit, N. T., Schwartz-Narbonne, R., Sinninghe Damsté, J. S., and Rush, D.: Analysis of non-derivatized bacteriohopanepolyols using UHPLC-HRMS reveals great structural diversity in environmental lipid assemblages, Org. Geochem., 160, 104285, https://doi.org/10.1016/j.orggeochem.2021.104285, 2021.

Horn, M. G., Robinson, R. S., Rynearson, T. A., and Sigman, D. M.: Nitrogen isotopic relationship between diatom-bound and bulk organic matter of cultured polar diatoms: N isotopes in cultured polar diatoms, Paleocean. Paleoclim., 26, PA3208, https://doi.org/10.1029/2010PA002080, 2011.

Horner, J. J., Little, S. H., Conway, T. M., Farmer, J. R., Hertzberg, F., Janssen, D. J., Lough, A. J. M., McKay, J. L., Tessin, A., Galer, S. J. G., Jaccard, S. L., Lacan, F., Pay-

tan, A., Wuttig, K., and GEOTRACES–PAGES Biological Productivity Working Group Members: Bioactive Trace Metals and Their Isotopes as Paleoproductivity Proxies: An Assessment Using GEOTRACES-Era Data, Global Biogeochem. Cy., 35, e2020GB006814, https://doi.org/10.1029/2020GB006814, 2021.

Hsiang, A. Y., Brombacher, A., Rillo, M. C., Mleneck-Vautravers, M. J., Conn, S., Lordsmith, S., Jentzen, A., Henehan, M. J., Metcalfe, B., Fenton, I. S., Wade, B. S., Fox, L., Meilland, J., Davis, C. V., Baranowski, U., Groeneveld, J., Edgar, K. M., Movellan, A., Aze, T., Dowsett, H. J., Miller, C. G., Rios, N., and Hull, P. M.: Endless Forams: > 34,000 modern planktonic foraminiferal images for taxonomic training and automated species recognition using convolutional neural networks, Paleocean. Paleoclim., 34, 1157–1177, https://doi.org/10.1029/2019PA003612, 2019.

Hu, R., Bostock, H. C., Gottschalk, J., and Piotrowski, A. M.: Reconstructing ocean oxygenation changes from U / Ca and U / Mn in foraminiferal coatings: proxy validation and constraints on glacial oxygenation changes, Quaternary Sci. Rev., 306, 108028, https://doi.org/10.1016/j.quascirev.2023.108028, 2023.

Huerta-Diaz, M. A. and Morse, J. W.: Pyritization of trace metals in anoxic marine sediments, Geochim. Cosmochim. Ac., 56, 2681–2702, https://doi.org/10.1016/0016-7037(92)90353-K, 1992.

Hughes, C., Barton, E., Hepach, H., Chance, R., Pickering, M. D., Hogg, K., Pommerening-Röser, A., Wadley, M. R., Stevens, D. P., and Jickells, T. D.: Oxidation of iodide to iodate by cultures of marine ammonia-oxidising bacteria, Mar. Chem., 234, 104000, https://doi.org/10.1016/j.marchem.2021.104000, 2021.

Hull, P. M., Osborn, K. J., Norris, R. D., and Robison, B. H.: Seasonality and depth distribution of a mesopelagic foraminifer, *Hastigerinella digitata*, in Monterey Bay, California, Limnol. Oceanogr., 56, 562–576, https://doi.org/10.4319/lo.2011.56.2.0562, 2011.

Hupp, B. N., Kelly, D. C., Zachos, J. C., and Bralower, T. J.: Effects of size-dependent sediment mixing on deep-sea records of the Paleocene-Eocene Thermal Maximum, Geology, 47, 749–752, 2019.

Hupp, B. N. and Kelly, D. C.: Delays, Discrepancies, and Distortions: Size-Dependent Sediment Mixing and the Deep-Sea Record of the Paleocene-Eocene Thermal Maximum From ODP Site 690 (Weddell Sea), Paleocean. Paleoclim., 35, e2020PA004018, https://doi.org/10.1029/2020PA004018, 2020.

Hupp, B. N., Kelly, D. C., and Williams, J. W.: Isotopic filtering reveals high sensitivity of planktic calcifiers to Paleocene–Eocene thermal maximum warming and acidification, P. Natl. Acad. of Sci., 119, e2115561119, https://doi.org/10.1073/pnas.2115561119, 2022.

Hupp, B. N., Kelly, D. C., Kozdon, R., Orland, I. J., and Valley, J. W.: Secondary controls on the stratigraphic signature of the carbon isotope excursion marking the Paleocene-Eocene thermal maximum at Ocean Drilling Program Site 1135, Chem. Geol., 632, 121534, https://doi.org/10.1016/j.chemgeo.2023.121534, 2023.

Hutchins, D. A., Mulholland, M. R., and Fu, F.: Nutrient cycles and marine microbes in a CO₂-enriched ocean, Oceanography, 22, 128–145, https://doi.org/10.5670/oceanog.2009.103, 2009.

Imbrie, J. and Kipp, N. G.: A new micropaleontological method for quantitative paleoclimatology: application to a late Pleistocene Caribbean Core, The Late Cenonoiz Glacial Ages, edited
by: Turekian, K., 71–181, New Haven, Yale University Press, https://doi.org/10.1016/0033-5894(73)90051-3, 1971.

Ishikawa, N. F., Ogawa, N. O., Sun, Y., Chikaraishi, Y., Takano, Y., and Ohkouchi, N.: Integrative assessment of amino acid nitrogen isotopic composition in biological tissue samples determined by GC/C/IRMS, LC × EA/IRMS, and LC × GC/C/IRMS, Limnol. Oceanogr.-Meth., 20, 531–542, https://doi.org/10.1002/lom3.10502, 2022.

Ishimura, T., Tsunogai, U., and Gamo, T.: Stable carbon and oxygen isotopic determination of sub-microgram quantities of CaCO₃ to analyze individual foraminiferal shells, Rapid Commun. Mass Spectrom., 18, 2883–2888, https://doi.org/10.1002/rcm.1701, 2004

Ito, T., Minobe, S., Long, M. C., and Deutsch, C.: Upper ocean O₂ trends: 1958–2015, Geophys. Res. Lett., 44, 4214–4223, https://doi.org/10.1002/2017GL073613, 2017.

Iwasaki, S., Kimoto, K., Sasaki, O., Kano, H., Honda, M. C., and Okazaki, Y.: Observations of the dissolution process of Globigerina bulloides tests (planktic foraminifera) by X-ray microcomputed tomography, Paleocean. Paleoclim. 30, 317–331, https://doi.org/10.1002/2014PA002639, 2015.

Iwasaki, S., Kimoto, K., Okazaki, Y., and Ikehara, M.: X-ray micro-CT scanning of tests of three planktic foraminiferal species to clarify dissolution process and progress, Geochem. Geophy. Geosy., 20, 6051–6065, https://doi.org/10.1029/2019GC008456, 2019a.

Iwasaki, S., Kimoto, K., Sasaki, O., Kano, H., and Uchida, H.: Sensitivity of planktic foraminiferal test bulk density to ocean acidification, Sci. Rep., 9, 9803, https://doi.org/10.1038/s41598-019-46041-x, 2019b.

Jaccard, S. L., Galbraith, E. D., Sigman, D. M., Haug, G. H., Francois, R., Pedersen, T. F., Dulski, P., and Thierstein, H. R.: Subarctic Pacific evidence for a glacial deepening of the oceanic respired carbon pool, Earth Planet. Sc. Lett., 277, 156–165, https://doi.org/10.1016/j.epsl.2008.10.017, 2009.

Jacobel, A. W., McManus, J. F., Anderson, R. F., and Winckler, G.: Repeated storage of respired carbon in the equatorial Pacific Ocean over the last three glacial cycles, Nat. Commun., 8, 1727, https://doi.org/10.1038/s41467-017-01938-x, 2017.

Jacobel, A. W., Anderson, R. F., Jaccard, S. L., McManus, J. F., Pavia, F. J., and Winckler, G.: Deep Pacific storage of respired carbon during the last ice age: Perspectives from bottom water oxygen reconstructions, Quaternary Sci. Rev., 230, 106065, https://doi.org/10.1016/j.quascirev.2019.106065, 2020.

Jahn, B.: Elektronenmikroskopische Untersuchungen an Foraminiferenschalen, Z. Wiss. Mikrosk., 61, 294–297, 1953.

Jaeschke, A., Ziegler, M., Hopmans, E. C., Reichart, G., Lourens, L. J., Schouten, S., and Sinninghe Damsté, J. S.: Molecular fossil evidence for anaerobic ammonium oxidation in the Arabian Sea over the last glacial cycle, Paleocean. Paleoclim., 24, PA2202, https://doi.org/10.1029/2008PA001712, 2009.

Jahnke, L. L., Summons, R. E., Hope, J. M., and Marais, D. J.: Carbon isotopic fractionation in lipids from methanotrophic bacteria II: the effects of physiology and environmental parameters on the biosynthesis and isotopic signatures of biomarkers, Geochim. Cosmochim. Ac., 63, 79–93, https://doi.org/10.1016/S0016-7037(98)00270-1, 1999.

Jannink, N. T., Zachariasse, W. J., and Van der Zwaan, G. J.: Living (Rose Bengal stained) benthic foraminifera from the Pakistan continental margin (northern Arabian Sea), Deep-Sea Res. Pt. I, 45, 1483–1513, https://doi.org/10.1016/S0967-0637(98)00027-2, 1998.

Jannink, N. T.: Seasonality, biodiversity and microhabitats in benthic foraminiferal communities, Ph. D. thesis, Utrecht University, Netherlands, 192 pp., ISBN: 90-5744-060-1, 2001.

Jarvis, I. and Higgs, N.: Trace-element mobility during early diagenesis in distal turbidites: late Quaternary of the Madeira Abyssal Plain, N Atlantic, Geol. Soc. Sp., 31, 179–214, https://doi.org/10.1144/GSL.SP.1987.031.01.14, 1987.

Jayakumar, A., Chang, B. X., Widner, B., Bernhardt, P., Mulholland, M. R., and Ward, B. B.: Biological nitrogen fixation in the oxygen-minimum region of the eastern tropical North Pacific ocean, ISME J., 11, 2356–2367, https://doi.org/10.1038/ismej.2017.97, 2017.

Jenkyns, H. C.: Geochemistry of oceanic anoxic events, Geochem. Geophy. Geosy., 11, Q03004, https://doi.org/10.1029/2009GC002788, 2010.

Jochum, K. P., Weis, U., Stoll, B., Kuzmin, D., Yang, Q., Raczek, I., Jacob, D. E., Stracke, A., Birbaum, K., Frick, D. A., and Günther, D.: Determination of reference values for NIST SRM 610–617 glasses following ISO guidelines, Geostand. Geoanal. Res., 35, 397–429, https://doi.org/10.1111/j.1751-908X.2011.00120.x, 2011.

Jochum, K. P., Scholz, D., Stoll, B., Weis, U., Wilson, S. A., Yang, Q., Schwalb, A., Börner, N., Jacob, D. E., and Andreae, M. O.: Accurate trace element analysis of speleothems and biogenic calcium carbonates by LA-ICP-MS, Chem. Geol., 318, 31–44, https://doi.org/10.1016/j.chemgeo.2012.05.009, 2012.

Johnson, K. S., Riser, S. C., and Ravichandran, M.: Oxygen variability controls denitrification in the Bay of Bengal oxygen minimum zone, Geophys. Res. Lett., 46, 804–811, https://doi.org/10.1029/2018GL079881, 2019.

Johnstone, H. J. H., Schulz, M., Barker, S., and Elderfield, H.: Inside story: An X-ray computed tomography method for assessing dissolution in the tests of planktonic foraminifera, Mar. Micropaleontol., 77, 58–70, https://doi.org/10.1016/j.marmicro.2010.07.004, 2010.

Johnstone, H. J. H., Yu, J., Elderfield, H., and Schulz, M.: Improving temperature estimates derived from Mg/Ca of planktonic foraminifera using X-ray computed tomography-based dissolution index, XDX, Paleocean. Paleoclim., 26, 1–17, https://doi.org/10.1029/2009pa001902, 2011.

Jones, B. and Manning, D. A. C.: Comparison of Geochemical Indices Used for the Interpretation of Palaeoredox Conditions in Ancient Mudstones, Chem. Geol., 111, 111–129, https://doi.org/10.1016/0009-2541(94)90085-X, 1994.

Jones, C. A., Closset, I., Riesselman, C. R., Kelly, R. P., Brzezinski, M. A., and Robinson, R. S.: New Constraints on Assemblage-Driven Variation in the Relationship Amongst Diatom-Bound, Biomass, and Nitrate Nitrogen Isotope Values, Paleocean. Paleoclim., 37, e2022PA004428, https://doi.org/10.1029/2022PA004428, 2022.

Jonkers, L., Bothe, O., and Kucera, M.: Preface: Advances in paleoclimate data synthesis and analysis of associated uncertainty: towards data-model integration to understand the climate, Clim.
Past, 17, 2577-2581, https://doi.org/10.5194/cp-17-2577-2021, 2021.

Jorissen, F. J., de Stigter, H. C., and Widmark, J. G.: A conceptual model explaining benthic foraminiferal microhabitats, Mar. Micropaleontol., 26, 3-15, https://doi.org/10.1016/0377-8398(95)00047-X, 1995.

Jorissen, F. J., Wittling, I., Peypouquet, J. P., Rabouille, C., and Relexans, J. C.: Live benthic foraminiferal faunas off Cape Blanc, NW-Africa: Community structure and microhabitats, Deep-Sea Res. Pt. I, 45, 2157-2188, https://doi.org/10.1016/S0967-0637(98)00056-9, 1998.

Jorissen, F. J., Fontanier, C., and Thomas, E.: Chapter seven paleoceanographical proxies based on deep-sea benthic foraminiferal assemblage characteristics, Dev. Mar. Geol., 1, 263-325, https://doi.org/10.1016/S1572-5480(07)01012-3, 2007.

Jorissen, F. J., Meyers, S. R., Kelly-Gerreyn, B. A., Huchet, L., Mouret, A., and Anschutz, P.: The 4GFOR model-Coupling 4G early diagenesis and benthic foraminiferal ecology, Mar. Micropal., 170, 102078, https://doi.org/10.1016/j.marmicro.2021.102078, 2022.

Junium, C. K., Freeman, K. H., and Arthur, M. A.: Controls on the stratigraphic distribution and nitrogen isotopic composition of zinc, vanadyl and free base porphyrins through Oceanic Anoxic Event 2 at Demerara Rise, Org. Geochem., 80, 60-71, https://doi.org/10.1016/j.orggeochem.2014.10.009, 2015.

Jung, M., Ilmberger, J., Mangini, A., and Emeis, K.-C.: Why some Mediterranean sapropels survived burn-down (and others did not), Mar. Geol., 141, 51-60, https://doi.org/10.1016/S0025-3227(97)00031-5, 1997.

Junium, C. K. and Arthur, M. A.: Nitrogen cycling during the Cretaceous, Cenomanian-Turonian oceanic anoxic event II, Geochem. Geophy. Geosy., 8, Q03002, https://doi.org/10.1029/2006GC001328, 2007.

Kaiho, K.: Benthic foraminiferal dissolved-oxygen index and dissolved-oxygen levels in the modern ocean, Geology, 22, 719-722, https://doi.org/10.1130/0091-7613(1994)022<0719:BFDOIA>2.3.CO;2, 1994.

Kaiho, K.: Effect of organic carbon flux and dissolved oxygen on the benthic foraminiferal oxygen index (BFOI), Mar. Micropaleontol., 37, 67-76, https://doi.org/10.1016/S0377-8398(99)00008-0, 1999.

Kaiho, K., Takeda, K., Petrizzo, M. R., and Zachos, J. C.: Anomalous shifts in tropical Pacific planktonic and benthic foraminiferal test size during the Paleocene-Eocene thermal maximum, Palaeogeogr. Palaeocl., 237, 456-464, https://doi.org/10.1016/j.palaeo.2005.12.017, 2006.

Kalvelage, T., Jensen, M. M., Contreras, S., Revsbech, N. P., Lam, P., Günter, M., LaRoche, J., Lavik, G., and Kuypers, M. M.: Oxygen sensitivity of anammox and coupled N-cycle processes in oxygen minimum zones, PLoS ONE, 6, e29299-12, https://doi.org/10.1371/journal.pone.0029299, 2011.

Kaneko, M., Takano, Y., Kamo, M., Morimoto, K., Nunoura, T., and Ohkouchi, N.: Insights into the methanogenic population and potential in subsurface marine sediments based on coenzyme F430 as a function-specific biomarker, JACS Au, 1, 1743-1751, https://doi.org/10.1021/jacsau.1c00307, 2021.

Kaplan, I. R. and Rittenberg, S. C.: Microbiological fractionation of sulphur isotopes, J. Gen. Microbiol., 34, 195-212, https://doi.org/10.1099/00221287-34-2-195, 1964.

Kappler, A. and Bryce, C.: Cryptic biogeochemical cycles: unravelling hidden redox reactions, Environ. Microbiol., 19, 842-846, https://doi.org/10.1111/1462-2920.13687, 2017.

Kast, E. R., Stolper, D. A., Auderset, A., Higgins, J. A., Ren, H., Wang, X. T., Martínez-García, A., Haug, G. H., and Sigman, D. M.: Nitrogen isotope evidence for expanded ocean suboxia in the early Cenozoic, Science, 364, 386-389, https://doi.org/10.1126/science.aau5784, 2019.

Keating-Bitonti, C. R. and Payne, J. L.: Ecophenotypic responses of benthic foraminifera to oxygen availability along an oxygen gradient in the California Borderland, Mar. Ecol., 38, e12430, https://doi.org/10.1111/maec.12430, 2017.

Keeling, R. F. and García, H. E.: The change in oceanic O₂ inventory associated with recent global warming, P. Natl. Acad. Sci. USA, 99, 7848-7853, https://doi.org/10.1073/pnas.122154899, 2002.

Keeling, R. F., Körtzinger, A., and Gruber, N.: Ocean Deoxygenation in a Warming World, Annu. Rev. Mar. Sci., 2, 199-229, https://doi.org/10.1146/annurev.marine.010908.163855, 2010.

Keil, R. G. and Cowie, G. L.: Organic matter preservation through the oxygen-deficient zone of the NE Arabian Sea as discerned by organic carbon: mineral surface area ratios, Mar. Geol., 161, 13-22, https://doi.org/10.1016/S0025-3227(99)00052-3, 1999.

Kelemen, S. R., Sansone, M., Walters, C. C., Kwiatek, P. J., and Bolin, T.: Thermal Transformations of Organic and Inorganic Sulfur in Type II Kerogen Quantified by S-XANES, Geochim. Cosmochim. Ac., 83, 61-78, https://doi.org/10.1016/j.gca.2011.12.015, 2012.

Kemp, A. E. S.: Laminated sediments as palaeoindicators, Geol. Soc. Lond. Spec. Publ., 116, vii-xii, https://doi.org/10.1144/GSL.SP.1996.116.01.01, 1996.

Kemp, A. E. S., Pike, J., Pearce, R. B., and Lange, C. B.: The "Fall dump": A new perspective on the role of a shade flora in the annual cycle of diatom production and export flux, Deep-Sea Res. Pt. II, 47, 2129-2154, https://doi.org/10.1016/S0967-0645(00)00019-9, 2000.

Kemp, A. E. S., Pearce, R. B., Grigorov, I., Rance, J., Lange, C. B., Quilty, P., and Salter, I.: Production of giant marine diatoms and their export at oceanic frontal zones: Implications for Si and C flux from stratified oceans, Glob. Biogeoch. Cy., 20, GB4S04, https://doi.org/10.1029/2006GB002698, 2006.

Kendall, B., Dahl, T. W., and Anbar, A. D.: The stable isotope geochemistry of molybdenum, Rev. Mineral. Geochem., 82, 683-732, https://doi.org/10.2138/rmg.2017.82.16, 2017.

Kendall, B., Komiya, T., Lyons, T. W., Bates, S. M., Gordon, G. W., Romaniello, S. J., Jiang, G., Creaser, R. A., Xiao, S., McFadden, K., Sawaki, Y., Tahata, M., Shu, D., Han, J., Li, Y., Chu, X., and Anbar, A. D.: Uranium and molybdenum isotope evidence for an episode of widespread ocean oxygenation during the late Ediacaran Period, Geochim. Cosmochim. Ac., 156, 173-193, https://doi.org/10.1016/j.gca.2015.02.025, 2015.

Kennedy, H. A. and Elderfield, H.: Iodine diagenesis in pelagic deep-sea sediments, Geochim. Cosmochim. Ac., 51, 2489-2504, https://doi.org/10.1016/0016-7037(87)90300-0, 1987a.

Kennedy, H. A. and Elderfield, H.: Iodine diagenesis in non-pelagic deep-sea sediments, Geochim. Cosmochim. Ac., 51, 2505-2514, https://doi.org/10.1016/0016-7037(87)90301-2, 1987b.

Kerisit, S. N., Smith, F. N., Saslow, S. A., Hoover, M. E., Lawter, A. R., and Qafoku, N. P.: Incorporation modes of
iodate in calcite, Environ. Sci. Technol., 52, 5902–5910,
https://doi.org/10.1021/acs.est.8b00339, 2018.

Kerl, C. F., Lohmayer, R., Bura-Nakic, E., Vance, D., and Planer-Friedrich, B.: Experimental confirmation of isotope fractionation in thiomolybdates using ion chromatographic separation and detection by multicollector ICPMS, Anal. Chem., 89, 3123–3129,
https://doi.org/10.1021/acs.analchem.6b04898, 2017.

Khider, D., Geay, J. E., McKay, N. P., Gil, Y., Garijo, D., Ratnakar, V., Garcia, M. A., Bertrand, S., Bothe, O., Brewer, P., Bunn, A., Chevalier, M., Bru, L. C., Csank, A., Dassié, E., DeLong, K., Felis, T., Francus, P., Frappier, A., Gray, W., Goring, S., Jonkers, L., Kahle, M., Kaufman, D., Kehrwald, N. M., Martrat, B., McGregor, H., Richey, J., Schmittner, A., Scroxton, N., Sutherland, E., Thirumalai, K., Allen, K., Arnaud, F., Axford, Y., Barrows, T., Bazin, L., Birch, S. E. P., Bradley, E., Bregy, J., Capron, E., Cartapanis, O., Chiang, H. W., Cobb, K. M., Debret, M., Dommain, R., Du, J., Dyez, K., Emerick, S., Erb, M. P., Falster, G., Finsinger, W., Fortier, D., Gauthier, N., George, S., Grimm, E., Hertzberg, J., Hibbert, F., Hillman, A., Hobbs, W., Huber, M., Hughes, A. L. C., Jaccard, S., Ruan, J., Kienast, M., Konecky, B., Roux, G.L., Lyubchich, V., Novello, V.F., Olaka, L., Partin, J. W., Pearce, C., Phipps, S.J., Pignol, C., Piotrowska, N., Poli, M. S., Prokopenko, A., Schwanck, F., Stepanek, C., Swann, G. E. A., Telford, R., Thomas, E., Thomas, Z., Truebe, S., Gunten, L., Waite, A., Weitzel, N., Wilhelm, B., Williams, J., Williams, J. J., Winstrup, M., Zhao, N., and Zhou, Y.: PaCTS 1.0: A Crowdsourced Reporting Standard for Paleoclimate Data, Paleocean. Paleoclim., 34, 1570–1596,
https://doi.org/10.1029/2019pa003632, 2019.

Khon, V.C., Hoogakker, B. A. A., Schneider, B., Segschneider, J., and Park, W.: Effect of an Open Central American Seaway on Ocean Circulation and the Oxygen Minimum Zone in the Tropical Pacific From Model Simulations, Geophys. Res. Lett., 50, e2023GL103728, https://doi.org/10.1029/2023GL103728, 2023

Killops, S. D. and Killops, V. J. (Eds.): Introduction to Organic Geochemistry. Wiley-Blackwell, New Jersey, USA, 408 pp., ISBN 0632065044, 2005.

Kim, B. and Zhang, Y. G.: Methane Index: Towards a quantitative
archaeal lipid biomarker proxy for reconstructing marine sedi-
mentary methane fluxes, Geochim. Cosmochim. Ac., 354, 74–
87, https://doi.org/10.1016/j.gca.2023.06.008, 2023.

King, K. and Hare, P. E.: Amino Acid Composi-
tion of Planktonic Foraminifera: A Paleobiochemi-
cal Approach to Evolution, Science, 175, 1461–1463,
https://doi.org/10.1126/science.175.4029.1461, 1972.

King, S. C., Kemp, A. E. S., and Murray, J. W.: Benthic foraminifera assemblages in Neogene laminated diatom ooze deposits in the east equatorial Pacific Ocean (Site 844). Proceedings of the Ocean Drilling Program, Sci. Res. Leg. 138, 665, https://doi.org/10.2973/odp.proc.sr.138.137.1995, 1995.

Kinoshita, S., Kuroyanagi, A., Kawahata, H., Fujita, K., Ishimura, T., Suzuki, A., Sasaki, O., and Nishi, H.: Temperature effects on the shell growth of a larger benthic foraminifer (*Sorites orbiculus*): Results from culture experiments and micro X-ray computed tomography, Mar. Micropaleontol., 163, 101960, https://doi.org/10.1016/j.marmicro.2021.101960, 2021.

Kipp, N. G.: New transfer function for estimating past sea-surface conditions from sea-bed distribution of planktonic foraminiferal assemblages in the North Atlantic, in: Investigation of Late Qua-

ternary Paleozoic. Paleoclim., edited by: Cune, R. M. and Hays, J. D., Geol. Soc. Am., USA, https://doi.org/10.1130/MEM145p3, 1976.

Klinkhammer, G. P. and Bender, M. L.: The distribution of man-
ganese in the Pacific Ocean, Earth Planet. Sc. Lett., 46, 361–384,
https://doi.org/10.1016/0012-821X(80)90051-5, 1980.

Klinkhammer, G. P. and Palmer, M. R.: Uranium in the oceans: Where it goes and why, Geochim. Cosmochim. Ac., 55, 1799–1806, https://doi.org/10.1016/0016-7037(91)90024-Y, 1991.

Klinkhammer, G. P., Mix, A. C., and Haley, B. A.: Increased dissolved terrestrial input to the coastal ocean during the last deglaciation, Geochem. Geophy. Geosy., 10, Q03009, https://doi.org/10.1029/2008GC002219, 2009.

Knapp, A. N., Casciotti, K. L., Berelson, W. M., Prokopenko, M. G., and Capone, D. G.: Low rates of nitrogen fixation in eastern tropical South Pacific surface waters, P. Natl. Acad. Sci., 113, 4398–4403, https://doi.org/10.1073/pnas.1515641113, 2016.

Kobayashi, K., Makabe, A., Yano, M., Oshiki, M., Kindaichi, T., Casciotti, K. L., and Okabe, S.: Dual nitrogen and oxygen isotope fractionation during anaerobic ammonium oxidation by anammox bacteria, ISME J., 13, 2426–2436, https://doi.org/10.1038/s41396-019-0440-x, 2019.

Koga, Y., Nishihara, M., Morii, H., and Akagawa-Matsushita, M.: Ether polar lipids of methanogenic bacteria structures, comparative aspects, and biosyntheses, Microbiol. Rev., 57, 164–182, https://doi.org/10.1128/mr.57.1.164-182.1993, 1993.

Koga, Y., Morii, H., Akagawa-Matsushita, M., and Ohga, M.: Correlation of polar lipid composition with 16S rRNA phylogeny in methanogens, Further analysis of lipid component parts, Biosci. Biotech. Bioch., 62, 230–236, https://doi.org/10.1271/bbb.62.230, 1998.

Kohnen, M. E. L., Sinninghe Damsté, J. S., ten Haven, H. L., and De Leeuw, J. W.: Early incorporation of polysulphides in sedimentary organic matter, Nature, 341, 640–41, https://doi.org/10.1038/341640a0, 1989.

Kohnen, M. E. L., Damste, J. S. S., and De Leeuw, J. W.: Biases from natural sulphurization in palaeoenvironmental reconstruction based on hydrocarbon biomarker distributions, Nature, 349, 775–778, https://doi.org/10.1038/349775a0, 1991.

Koho, K. A., Kouwenhoven, T. J., de Stigter, H. C., and Van der Zwaan, G. J.: Benthic foraminifera in the Nazaré Canyon, Portuguese continental margin: Sedimentary environments and disturbance, Mar. Micropaleontol., 66, 27–51, https://doi.org/10.1016/j.marmicro.2007.07.005, 2007.

Koho, K. A., García, R. D., De Stigter, H. C., Epping, E., Koning, E., Kouwenhoven, T. J., and van der Zwaan, G. J.: Sedimentary labile organic carbon and pore water redox control on species distribution of benthic foraminifera: A case study from Lisbon-Setúbal Canyon (southern Portugal), Progr. Oceanogr., 79, 55–82, https://doi.org/10.1016/j.pocean.2008.07.004, 2008.

Koho, K. A., and Piña-Ochoa, E.: Benthic foraminifera: inhabitants of low-oxygen environments, in: Anoxia, edited by: Altenbach, A., Bernhard, J., Seckbach, J., Springer, Dordrecht, Germany, 249–285, Springer, Dordrecht, https://doi.org/10.1007/978-94-007-1896-8_14, 2012.

Koho, K. A., Nierop, K. G. J., Moodley, L., Middelburg, J. J., Pozzato, L., Soetaert, K., van der Plicht, J., and Reichart, G. J.: Microbial bioavailability regulates organic matter preser-
vation in marine sediments, Biogeosciences, 10, 1131–1141,
https://doi.org/10.5194/bg-10-1131-2013, 2013.

Koho, K. A., de Nooijer, L. J., and Reichart, G. J.: Combining benthic foraminiferal ecology and shell Mn / Ca to deconvolve past bottom water oxygenation and paleoproductivity, Geochim. Cosmochim. Ac., 165, 294–306, https://doi.org/10.1016/j.gca.2015.06.003, 2015.

Koho, K. A., De Nooijer, L. J., Fontanier, C., Toyofuku, T., Oguri, K., Kitazato, H., and Reichart, G. J.: Benthic foraminiferal Mn / Ca ratios reflect microhabitat preferences, Biogeosciences, 14, 3067–3082, https://doi.org/10.5194/bg-14-3067-2017, 2017.

Kok, M. D., Rijpstra, W. I. C., Robertson, L., Volkman, J. K., and Sinninghe Damsté, J. S.: Early Steroid sulfurisation in surface sediments of a permanently stratified lake (Ace Lake, Antarctica), Geochim. Cosmochim. Ac. 64, 1425–1436, https://doi.org/10.1016/S0016-7037(99)00430-5, 2000.

Kolouchová, I., Timkina, E., Maňátková, O., Ky-
selová, L., and Řezanka, T.: Analysis of bacteri-
ohopanoids from thermophilic bacteria by liquid
chromatography-mass spectrometry, Microorganisms, 9,
2062, https://doi.org/10.3390/microorganisms9102062, 2021.

Kool, D. M., Talbot, H. M., Rush, D., Ettwig, K., and Sinninghe Damsté, J. S.: Rare bacteriohopanepolyols as markers for an autotrophic, intra-aerobic methanotroph, Geochim. Cosmochim. Ac., 136, 114–125, https://doi.org/10.1016/j.gca.2014.04.002, 2014.

Kraft, B., Jehmlich, N., Larsen, M., Bristow, L. A., Könneke, M., Thamdrup, B., and Canfield, D. E.: Oxygen and nitrogen production by an ammonia-oxidizing archaeon, Science, 375, 97–100, https://doi.org/10.1126/science.abe6733, 2022.

Kranner, M., Harzhauser, M., Beer, C., Auer, G., and Piller, W. E.: Calculating dissolved marine oxygen values based on an enhanced Benthic Foraminifera Oxygen Index, Sci. Rep., 12, 1–13, https://doi.org/10.1038/s41598-022-05295-8, 2022.

Kristiansen, K. D., Kristensen, E. and Jensen, E. M. H.: The influ-
ence of water column hypoxia on the behaviour of manganese
and iron in sandy coastal marine sediment, Estuar. Coast. Shelf
S., 55, 645–654, https://doi.org/10.1006/ecss.2001.0934, 2002.

Ku, T. L., Mathieu, G. G. and Knauss, K. G.: Uranium in open ocean: concentration and isotopic composition, Deep-Sea Res., 24, 1005–1017, https://doi.org/10.1016/0146-6291(77)90571-9, 1977.

Kucera, M.: Chapter Six planktonic foraminifera as tracers of past ocean environments, Dev. Mar. Geol., 1, 213–262, https://doi.org/10.1016/S1572-5480(07)01011-1, 2007.

Kucera, M., Weinelt, M., Kiefer, T., Pflaumann, U., Hayes, A., Weinelt, M., Chen, M. W., Mix, A. C., Barrows, T. T., Cortijo, E., Duprat, J., Juggins, S., and Waelbroeck, C.: Reconstruction of sea-surface temperatures from assemblages of planktonic foraminifera: multi-technique approach based on geographically constrained calibration data sets and its application to glacial Atlantic and Pacific Oceans, Quaternary Sci. Rev., 24, 951–998, https://doi.org/10.1016/j.quascirev.2004.07.014, 2005.

Kühn, H., Lembke-Jene, L., Gersonde, R., Esper, O., Lamy, F., Arz, H., Kuhn, G., and Tiedemann, R.: Laminated sediments in the Bering Sea reveal atmospheric teleconnections to Greenland climate on millennial to decadal timescales during the last deglaciation, Clim. Past, 10, 2215–2236, https://doi.org/10.5194/cp-10-2215-2014, 2014.

Kuhnt, T., Friedrich, O., Schmiedl, G., Milker, Y., Mackensen, A., and Lückge, A.: Relationship between pore density in benthic foraminifera and bottom-water oxygen content, Deep-Sea Res. Pt. I, 76, 85–95, https://doi.org/10.1016/j.dsr.2012.11.013, 2013.

Kuhnt, T., Schiebel, R., Schmiedl, G., Milker, Y., Mackensen, A., and Friedrich, O.: Automated and manual analyses of the pore density-to-oxygen relationship in *Globobulimina Turgida* (Bailey), J. Foraminifer. Res., 44, 5–16, https://doi.org/10.2113/gsjfr.44.1.5, 2014.

Kumar, N., Anderson, R. F., Mortlock, R. A., Froelich, P. N., Kubik, P., Dittrich-Hannen, B., and Suter, M.: Increased biological productivity and export production in the glacial Southern Ocean, Nature, 378, 675–680, https://doi.org/10.1038/378675a0, 1995.

Kuroda, J., Ohkouchi, N., Ishii, T., Tokuyama, H., and Taira, A.: Lamina-scale analysis of sedimentary components in Cretaceous black shales by chemical compositional mapping: Implications for paleoenvironmental changes during the Oceanic Anoxic Events, Geochim. Cosmochim. Ac., 69, 1479–1494, https://doi.org/10.1016/j.gca.2004.06.039, 2005.

Kuroyanagi, A., da Rocha, R. E., Bijma, J., Spero, H. J., Rus-
sell, A. D., Eggins, S. M., and Kawahata, H.: Effect of
dissolved oxygen concentration on planktonic foraminifera
through laboratory culture experiments and implications for
oceanic anoxic events, Mar. Micropaleontol., 101, 28–32,
https://doi.org/10.1016/j.marmicro.2013.04.005, 2013.

Kuroyanagi, A., Iriem T., Kinoshita, S., Kawahata, H., Suzuki, A., Nishi, H., Sasaki, O., Takashima, R., and Fujita, K.: Decrease in volume and density of foraminiferal shells with progressing ocean acidification, Sci. Rep., 11, 19988, https://doi.org/10.1038/s41598-021-99427-1, 2021.

Kusch, S., Kashiyama, Y., Ogawa, N. O., Altabet, M., Butzin, M., Friedrich, J., Ohkouchi, N., and Mollenhauer, G.: Implications for chloro-and pheopigment synthesis and preservation from combined compound-specific δ¹³C, δ¹⁵N, and Δ¹⁴C analysis, Biogeosciences, 7, 4105–4118, https://doi.org/10.5194/bg-7-4105-2010, 2010.

Kusch, S. and Rush, D.: Revisiting the precursors of the most abundant natural products on Earth: a look back at 30+ years of bacteriohopanepolyol (BHP) research and ahead to new frontiers, Org. Geochem., 172, 104469, https://doi.org/10.1016/j.orggeochem.2022.104469, 2022.

Kusch, S., Wakeham, S. G., Dildar, N., Zhu, C., and Sepúlveda, J.: Bacterial and archaeal lipids trace chemo(auto)trophy along the redoxcline in Vancouver Island fjords, Geobiology, 19, 521–541, https://doi.org/10.1111/gbi.12446, 2021.

Kusch, S., Wakeham, S. G., and Sepúlveda, J.: Bacterio-
hopanepolyols across the Black Sea redoxcline trace di-
verse bacterial metabolisms, Org. Geochem., 172, 104462,
https://doi.org/10.1016/j.orggeochem.2022.104462, 2022.

Kutuzov, I., Rosenberg, Y. O., Bishop, A., and Amrani, A.: The origin of organic sulphur compounds and their impact on the paleoenvironmental record, in: Hydrocarbons, Oils and Lipids: Diversity, Origin, Chemistry and Fate, edited by: Wilkes, H., Springer, Cham, 1–54, https://doi.org/10.1007/978-3-319-54529-5, 2019.

Kuypers, M. M. M., Breugel, Y. van, Schouten, S., Erba, E., and Sinninghe Damsté, J. S.: N₂-fixing cyanobacteria supplied nutrient N for Cretaceous oceanic anoxic events, Geology, 32, 853–856, https://doi.org/10.1130/G20458.1, 2004.
Kwiatkowski, L., Torres, O., Bopp, L., Aumont, O., Chamberlain, M., Christian, J. R., Dunne, J. P., Gehlen, M., Ilyina, T., John, J. G., Lenton, A., Li, H., Lovenduski, N. S., Orr, J. C., Palmieri, J., Santana-Falcón, Y., Schwinger, J., Séférian, R., Stock, C. A., Tagliabue, A., Takano, Y., Tjiputra, J., Toyama, L., Tsujino, H., Watanabe, M., Yamamoto, A., Yool, A., and Ziehn, T.: Twenty-first century ocean warming, acidification, deoxygenation, and upper-ocean nutrient and primary production decline from CMIP6 model projections, Biogeosciences 17, 3439–3470, https://doi.org/10.5194/bg-17-3439-2020, 2020.

Lam, P. and Kuypers, M. M. M.: Microbial nitrogen cycling processes in oxygen minimum zones, Annu. Rev. Mar. Sci., 3, 317–345, https://doi.org/10.1146/annurev-marine-120709-142814, 2011.

Langlet, D., Geslin, E., Baal, C., Metzger, E., Lejzerowicz, F., Riedel, B., Zuschin, M., Pawlowski, J., Stachowitsch, M., and Jorissen, F. J.: Foraminiferal survival after long-term in situ experimentally induced anoxia, Biogeosciences 10, 7463–7480, https://doi.org/10.5194 bg-10-7463-2013, 2013.

Langmuir, D.: Uranium solution-mineral equilibria at low temperatures with applications to sedimentary ore deposits, Geochim. Cosmochim. Ac., 42, 547–569, https://doi.org/10.1016/0016-7037(78)90001-7, 1978.

Large, R. R., Halpin, J. A., Danyushevsky, L. V., Maslennikov, V. V., Bull, S. W., Long, J. A., Gregory, D. D., Lounejeva, E., Lyons, T. W., Sack, P. J. and McGoldrick, P. J.: Trace element content of sedimentary pyrite as a new proxy for deep-time ocean–atmosphere evolution, Earth Planet. Sc. Lett., 389, 209–220, https://doi.org/10.1016/j.epsl.2013.12.020, 2014.

Lau, K. V., Romaniello, S. J., and Zhang, F. (Eds.): The uranium isotope paleoredox proxy, Cambridge University Press, Cambridge, United Kingdom, ISBN 9781108584142, https://doi.org/10.1017/9781108584142, 2019.

Lau, K. V., Lyons, T. W., and Maher, K.: Uranium reduction and isotopic fractionation in reducing sediments: Insights from reactive transport modeling, Geochim. Cosmochim. Ac., 287, 65–92, https://doi.org/10.1016/j.gca.2020.01.021, 2020.

Lau, K. V. and Hardisty, D. S.: Modeling the impacts of diagenesis on carbonate paleoredox proxies, Geochim. Cosmochim. Ac., 337, 123–139, https://doi.org/10.1016/j.gca.2022.09.021, 2022.

Lea, D. W.: Trace elements in foraminiferal calcite, in: Modern foraminifera 259–277, Dordrecht, Springer Netherlands, https://doi.org/10.1007/0-306-48104-9_15, 1999.

Le Calvez, J.: Les perforations du test de *Discorbis erecta* (Foraminifère), Bulletin de Laboratoire Maritime de Dinard, 29, 1–4, 1947.

Legeleux, F., Reyss, J., Bonte, P., and Organo, C.: Concomitant enrichments of uranium, molybdenum and arsenic in suboxic continental-margin sediments, Oceanol. Acta, 17, 417–429, 1994.

Leiter, C. and Altenbach, A. V.: Benthic foraminifera from the diatomaceous mud belt off Namibia: characteristic species for severe anoxia, Palaeontol. Electron., 13, 1–19, 2010.

LeKieffre, C., Spangenberg, J. E., Mabilleau, G., Escrig, S., Meibom, A., and Geslin, E.: Surviving anoxia in marine sediments: The metabolic response of ubiquitous benthic foraminifera (*Ammonia tepida*), PLOS ONE, 12, e0177604, https://doi.org/10.1371/journal.pone.0177604, 2017.

Lengger, S. K., Rush, D., Mayser, J. P., Blewett, J., Narbonne, R. S., Talbot, H. M., Middelburg, J. J., Jetten, M. S. M., Schouten, S., Sinninghe Damsté, J. S., and Pancost, R.D.: Dark carbon fixation in the Arabian Sea oxygen minimum zone contributes to sedimentary organic carbon (SOM), Global Biogeochem. Cy., 33, 1715–1732, https://doi.org/10.1029/2019GB006282, 2019.

Leutenegger, S.: Ultrastructure de foraminifères perfores et imperfores ainsi que de Leurs symbiotes, Cahiers Micropaleontol., 3, 1–52, 1977.

Leutenegger, S. and Hansen, H. J.: Ultrastructural and radiotracer studies of pore function in Foraminifera, Mar. Biol., 54, 11–16, https://doi.org/10.1007/BF00387046, 1979.

Levin, L. A., Etter, R. J., Rex, M. A., Gooday, A. J., Smith, C. R., Pineda, J., Stuart, C. T., Hessler, R. R., and Pawson, D.: Environmental influences on regional deep-sea species diversity, Annu. Rev. Ecol. Syst., 51–93, https://doi.org/10.1146/annurev.ecolsys.32.081501.114002, 2001.

Levin, L., Gutiérrez, D., Rathburn, A., Neira, C., Sellanes, J., Muñoz, P., Gallardo, V., and Salamanca, M.: Benthic processes on the Peru margin: a transect across the oxygen minimum zone during the 1997–98 El Niño, Prog. Oceanogr., 53, 1–27, https://doi.org/10.1016/S0079-6611(02)00022-8, 2002.

Levin, L. A.: Oxygen minimum zone Benthos: Adaptation and community response to hypoxia, Oceanogr. Mar. Biol., 41, 1–45, 2003.

Levin, L. A.: Manifestation, drivers, and emergence of open ocean deoxygenation, Annu. Rev. Mar. Sci., 10, 229–260, https://doi.org/10.1146/annurev-marine-121916-063359, 2018.

Li, C., Jian, Z., Jia, G., Dang, H., and Wang, J.: Nitrogen fixation changes regulated by upper water structure in the South China Sea during the last two glacial cycles, Global Biogeochem. Cy., 33, 1010–1025, https://doi.org/10.1029/2019GB006262, 2019.

Li, J., Wang, Y., Guo, W., Xie, X., Zhang, L., Liu, Y., and Kong, S.: Iodine mobilization in groundwater system at Dattong basin, China: evidence from hydrochemistry and fluorescence characteristics, Sci. Total Environ., 468, 738–745, https://doi.org/10.1016/j.scitotenv.2013.08.092, 2014.

Linke, P. and Lutze, G. F.: Microhabitat preferences of benthic foraminifera – a static concept or a dynamic adaptation to optimize food acquisition?, Mar. Micropaleontol., 20, 215–234, https://doi.org/10.1016/0377-8398(93)90034-U, 1993.

Little, S. H., Vance, D., Lyons, T. W., and McManus, J.: Controls on trace metal authigenic enrichment in reducing sediments: Insights from modern oxygen-deficient settings, Am. J. Sci., 315, 77–119, https://doi.org/10.2475/02.2015.01, 2015.

Liu, J. and Algeo, T.J.: Beyond redox: Control of trace-metal enrichment in anoxic marine facies by water mass chemistry and sedimentation rates, Geochim. Cosmochim. Ac., 287, 269–317, https://doi.org/10.1016/j.gca.2020.02.037, 2020.

Liu, K.-K. and Kaplan, I. R.: The eastern tropical Pacific as a source of $^{15}$N-enriched nitrate in seawater off southern California: Origin of 15N-rich nitrate, Limnol. Oceanogr., 34, 820–830, https://doi.org/10.4319/lo.1989.34.5.0820, 1989.

Liu, X.-L., Summons, R. E., and Hinrichs, K.-U.: Extending the known range of glycerol ether lipids in the environment: structural assignments based on tandem mass spectral fragmentation patterns, Rapid Commun. Mass Sp., 26, 2295–2302, https://doi.org/10.1002/rcm.6355, 2012.
Liu, X.-L., Zhu, C., Wakeham, S.G., and Hinrichs, K.-U.: In situ production of branched glycerol dialkyl glycerol tetraethers in anoxic marine water columns, Mar. Chem., 166, 1–8, https://doi.org/10.1016/j.marchem.2014.08.008, 2014.

Liu, Z., Altabet, M. A., and Herbert, T. D.: Plio-Pleistocene denitrification in the eastern tropical North Pacific: Intensification at 2.1 Ma: ETNP denitrification intensification at 2.1 Ma, Geochem. Geophy. Geosy., 9, Q11006, https://doi.org/10.1029/2008GC002044, 2008.

Loeblich Jr., A. R. and Tappan, H. (Eds.): Foraminiferal Genera and Their Classification, Van Nostrand Reihhold, New York, 868 pp., ISBN 9781489957627, 1988.

Loescher, C. R., Großkopf, T., Desai, F. D., Gill, D., Schunck, H., Croot, P. L., Schlosser, C., Neulinger, S. C., Pinnow, N., Lavik, G., Kuypers, M. M. M., LaRoche, J., and Schmitz, R. A.: Facets of diazotrophy in the oxygen minimum zone waters off Peru, ISME J., 8, 2180–2192, https://doi.org/10.1038/ismej.2014.71, 2014.

Lohmann, G. P.: A model for variation in the chemistry of planktonic foraminifera due to secondary calcification and selective dissolution, Paleocean. Paleoclim., 10, 445–457, https://doi.org/10.1029/95PA00059, 1995.

Loubere, P., Gary, A., and Lagoe, M.: Generation of the benthic foraminiferal assemblage: Theory and preliminary data, Mar. Micropaleontol., 20, 165–181, https://doi.org/10.1016/0377-8398(93)90031-R, 1993.

Loubere, P.: Quantitative estimation of surface ocean productivity and bottom water oxygen concentration using benthic foraminifera, Paleocean. Paleoclim., 9, 723–737, https://doi.org/10.1029/94PA01624, 1994.

Lovley, D. R., Phillips, E. J., Gorby, Y. A., and Landa, E. R.: Microbial reduction of uranium, Nature, 350, 413–416, https://doi.org/10.1038/350413a0, 1991.

Löwemark, L., Chen, H.F., Yang, T.N., Kylander, M., Yu, E.-F., Hsu, Y.-W., Lee, T.-Q., Song, S.-R., and Jarvis, S.: Normalizing XRF-scanner data: a cautionary note on the interpretation of high resolution records from organic rich lakes, J. Asian Earth Sci., 40, 1250–1256, https://doi.org/10.1016/j.jseaes.2010.06.002, 2010.

Löwemark, L., Bloemsma, M., Croudace, I., Daly, J. S., Edwards, R. J., Francus, P., Galloway, J. M., Gregory, B. R. B., Huang, J-J..S., Jones, A. F., Kylander, M., Löwemark, L., Luo, Y., Maclachlan, S., Ohlendorf, C., Patterson, R. T., Pearce, C., Profe, J., Reinhardt, E. G., Stranne, C., Tjallingii, R., and Turner, J. N.: Practical guidelines and recent advances in the Itrax XRF core-scanning procedure, Quaternary Int., 514, 16–29, https://doi.org/10.1016/j.quaint.2018.10.044, 2019.

Lu, Z., Jenkyns, H. C., and Rickaby, R. E.: Iodine to calcium ratios in marine carbonate as a paleo-redox proxy during oceanic anoxic events, Geology, 38, 1107–1110, https://doi.org/10.1130/G31145.1, 2010.

Lu, Z., Hoogakker, B. A., Hillenbrand, C. D., Zhou, X., Thomas, E., Gutchess, K. M., Lu, W., Jones, L., and Rickaby, R. E.: Oxygen depletion recorded in upper waters of the glacial Southern Ocean, Nat. Commun., 7, 11146, https://doi.org/10.1038/ncomms11146, 2016.

Lu, W., Ridgwell, A., Thomas, E., Hardisty, D. S., Luo, G., Algeo, T. J., Saltzman, M. R., Gill, B. C., Shen, Y., Ling, H. F., and Edwards, C. T.: Late inception of a re-

siliently oxygenated upper ocean, Science, 361, 174–177, https://doi.org/10.1126/science.aar5372, 2018.

Lu, W., Dickson, A. J., Thomas, E., Rickaby, R. E., Chapman, P., and Lu, Z.: Refining the planktic foraminiferal I/Ca proxy: Results from the Southeast Atlantic Ocean, Geochim. Cosmochim. Ac., 287, 318–327, https://doi.org/10.1016/j.gca.2019.10.025, 2020.

Lu, W., Wang, Y., Oppo, D. W., Nielsen, S. G., and Costa, K. M.: Comparing paleo-oxygenation proxies (benthic foraminiferal surface porosity, I/Ca, authigenic uranium) on modern sediments and the glacial Arabian Sea, Geochim. Cosmochim. Ac., 331, 69–85, https://doi.org/10.1016/j.gca.2022.06.001, 2022.

Lu, Z., Thomas, E., Rickaby, R. E., Lu, W., and Prow, A. N.: Commentary: Planktic foraminifera iodine/calcium ratios from plankton tows, Front. Mar. Sci., 10, 1221835, https://doi.org/10.3389/fmars.2023.1221835, 2023.

Luciani, V., D'Onofrio, R., Filippi, G., and Moretti, S.: Which was the habitat of early Eocene planktic foraminifer *Chiloguembelina*? Stable isotope paleobiology from the Atlantic Ocean and implication for paleoceanographic reconstructions, Global Planet. Change, 191, 103216, https://doi.org/10.1016/j.gloplacha.2020.103216, 2020.

Luo, G., Yang, H., Algeo, T. J., Hallmann, C., and Xie, S.: Lipid biomarkers for the reconstruction of deep-time environmental conditions, Earth-Sci. Rev., 189, 99–124, https://doi.org/10.1016/j.earscirev.2018.03.005, 2019.

Luther, G. W.: Review on the physical chemistry of iodine transformations in the oceans, Front. Mar. Sci., 10, 1085618, https://doi.org/10.3389/fmars.2023.1085618, 2023.

Lutze, G. F.: Variationsstatistik und Ökologie bei rezen- ten Foraminiferen, Paläontologische Z., 36, 252–264, https://doi.org/10.1007/BF02986977, 1962.

Lutze, G. F.: Statistical investigations on the variability of *Bolivina argentea* Cushman, Contrib. Cushman Found. Foramin. Res., 15, 105–116, 1964.

Lutze, G. F. and Coulbourn, W. T.: Recent benthic foraminifera from the continental margin of northwest Africa: community structure and distribution, Mar. Micropaleontol., 8, 361–401, https://doi.org/10.1016/0377-8398(84)90002-1, 1984.

Lynch-Stieglitz, J., Stocker, T. F., Broecker, W. S., and Fairbanks, R. G.: The influence of air-sea exchange on the isotopic composition of oceanic carbon: Observations and modelling, Global Biogeochemical Cy., 9, 653–665, https://doi.org/10.1029/95GB02574, 1995.

Lynn D. C. and Bonatti E.: Mobility of manganese in diagenesis of deep-sea sediments, Mar. Geol., 3, 457–474, https://doi.org/10.1016/0025-3227(65)90046-0, 1965.

Ma, J., French, K. L., Cui, X., Bryant, D. A., and Summons, R. E.: Carotenoid biomarkers in Namibian shelf sediments: Anoxy- genic photosynthesis during sulfide eruptions in the Benguela Upwelling System, P. Natl. Acad. Sci. USA, 118, e2106040118, https://doi.org/10.1073/pnas.2106040118, 2021.

Mackensen, A. and Douglas, R. G.: Down-core distribution of live and dead deep-water benthic foraminifera in box cores from the Weddell Sea and the California continental border- land, Deep-Sea Res., 36, 879–900, https://doi.org/10.1016/0198- 0149(89)90034-4, 1989.

Mackensen, A., Hubberten, H. W., Bickert, T., Fischer, G., and Futerer, D. K.: The $\delta^{13}$C in benthic foraminiferal tests of *Fontbotia*
wuellerstorfii (Schwager) Relative to the $\delta^{13}$C of dissolved inorganic carbon in Southern Ocean Deep Water: Implications for glacial ocean circulation models, Paleocean. Paleoclim., 8, 587–610, https://doi.org/10.1029/93pa01291, 1993.

Mackensen, A. and Licari, L.: Carbon Isotopes of Live Benthic Foraminifera from the South Atlantic: Sensitivity to Bottom Water Carbonate Saturation State and Organic Matter Rain Rates, The South Atlantic in the Late Quaternary: Reconstruction of material budgets and current systems, 623–644, Springer Berlin Heidelberg, ISBN: 978-3-540-21028-3, 2004.

Madison, A. S., Tebo, B. M., Mucci, A., Sundby, B., and Luther, G. W.: Abundant porewater Mn(III) is a major component of the sedimentary redox system, Science, 341, 875–878, https://doi.org/10.1126/science.1241396, 2013.

Mallon, J., Glock, N., and Schönfeld, J.: The response of benthic foraminifera to low-oxygen conditions of the Peruvian oxygen minimum zone, in: Anoxia, edited by: Altenbach, A., Bernhard, J., Seckbach, J., Springer, Dordrecht, Germany, 305–321, https://doi.org/10.1007/978-94-007-1896-8_16, 2012.

Mangini, A., Eisenhauer, A., and Walter, P.: Preliminary Testing of the Model, in: The Relevance of Manganese in the Ocean for the Climatic Cycles in the Quaternary, Berlin, Heidelberg, 19–28, https://doi.org/10.1007/978-3-642-46703-5_2, 1990.

Mangini, A., Jung, M., and Laukenmann, S.: What do we learn from peaks of uranium and of manganese in deep sea sediments?, Mar. Geol., 177, 63–78, https://doi.org/10.1016/S0025-3227(01)00124-4, 2001.

Manno, C., Morata, N., and Bellerby, R.: Effect of ocean acidification and temperature increase on the planktonic foraminifer *Neogloboquadrina pachyderma* (sinistral), Polar Biol., 5, 1–9, https://doi.org/10.1007/s00300-012-1174-7, 2012.

Marchant, R., Tetard, M., Pratiwi, A., Adebayo, M., and de Garidel-Thoron, T.: Automated analysis of foraminifera fossil records by image classification using a convolutional neural network, J. Micropalaeontol., 39, 183–202, https://doi.org/10.5194/jm-39-183-2020, 2020.

Marconi, D., Kopf, S., Rafter, P. A., and Sigman, D. M.: Aerobic respiration along isopycnals leads to overestimation of the isotope effect of denitrification in the ocean water column, Geochim. Cosmochim. Ac., 197, 417–432, https://doi.org/10.1016/j.gca.2016.10.012, 2017.

Marshall, B. J., Thunell, R. C., Henehan, M. J., Astor, Y., and Wejnert, K. E.: Planktonic foraminiferal area density as a proxy for carbonate ion concentration: A calibration study using the Cariaco Basin ocean time series, Paleocean. Paleoclim., 28, 363–376, https://doi.org/10.1002/palo.20034, 2013.

Martinez, A., Hernández-Terrones, L., Rebolledo-Vieyra, M., and Paytan, A.: Impact of carbonate saturation on large Caribbean benthic foraminifera assemblages, Biogeosciences, 15, 6819–6832, https://doi.org/10.5194/bg-15-6819-2018, 2018.

Martínez-García, A., Jung, J., Ai, X. E., Sigman, D. M., Auderset, A., Duprey, N. N., Foreman, A., Fripiat, F., Leichliter, J., Lüdecke, T., Moretti, S., and Wald, T.: Laboratory Assessment of the Impact of Chemical Oxidation, Mineral Dissolution, and Heating on the Nitrogen Isotopic Composition of Fossil-Bound Organic Matter, Geochem. Geophy. Geosy., 23, e2022GC010396, https://doi.org/10.1029/2022GC010396, 2022.

Margreth, S., Rueggeberg, A., and Spezzaferri, S.: Benthic foraminifera as bioindicator for cold-water coral reef ecosystems along the Irish margin, Deep-Sea Res. Pt. I, 56, 2216–2234, https://doi.org/10.1016/j.dsr.2009.07.009, 2009.

Matthews, A., Azrieli-Tal, I., Benkovitz, A., Bar-Matthews, M., Vance, D., Poulton, S. W., Teutsch, N., Almogi-Labin, A., and Archer, C.: Anoxic development of sapropel S1 in the Nile Fan inferred from redox sensitive proxies, Fe spe-ciation, Fe and Mo isotopes, Chem. Geol., 475, 24–39, https://doi.org/10.1016/j.chemgeo.2017.10.028, 2017.

Matys, E. D., Sepúlveda, J., Pantoja, S., Lange, C. B., Caniupán, M., Lamy, F., and Summons, R. E.: Bacteriohopanepolyols along redox gradients in the Humboldt Current System off northern Chile, Geobiology, 15, 844–857, https://doi.org/10.1111/gbi.12250, 2017.

Mayer, M. H., Parenteau, M. N., Kempher, M. L., Madi-gan, M. T., Jahnke, L. L., and Welander, P. V.: Anaero-bic 3-methylhopanoid production by an acidophilic photosyn-thetic purple bacterium, Arch. Microbiol., 203, 6041–6052, https://doi.org/10.1007/s00203-021-02561-7, 2021.

McCarthy, M. D., Lehman, J., and Kudela, R.: Compound-specific amino acid $\delta^{15}$N patterns in marine algae: Tracer potential for cyanobacterial vs. eukaryotic organic nitrogen sources in the ocean, Geochim. Cosmochim. Ac., 103, 104–120, https://doi.org/10.1016/j.gca.2012.10.037, 2013.

McConnaughey, T. A., Burdett, J., Whelan, J. F., and Paull, C. K.: Carbon isotopes in biological carbonates: respiration and photosynthesis, Geochim. Cosmochim. Ac., 61, 611–622, https://doi.org/10.1016/S0016-7037(96)00361-4, 1997.

McCorkle, D. C., Emerson, S. R., and Quay, P. D.: Stable carbon isotopes in marine porewaters, Earth Planet. Sc. Lett., 74, 13–26, https://doi.org/10.1016/0012-821X(85)90162-1, 1985.

McCorkle, D. C. and Emerson, S. R.: The relationship between pore water carbon isotopic composition and bottom water oxygen concentration, Geochim. Cosmochim. Ac., 52, 1169–1178, https://doi.org/10.1016/0016-7037(88)90270-0, 1988.

McCorkle, D. C., Keigwin, L. D., Corliss, B. H., and Emerson, S. R.: The influence of microhabitats on the carbon isotopic composition of deep-sea benthic foraminifera, Paleocean. Paleoclim., 6, 161–185, https://doi.org/10.1029/PA005i002p00161, 1990.

McCormick, L. R., Levin, L. A., and Oesch, N. W.: Vision is highly sensitive to oxygen availability in marine invertebrate larvae, J. Exp. Biol., 222, jeb200899, https://doi.org/10.1242/jeb.200899, 2019.

McIlvin, M. R. and Altabet, M. A.: Chemical Conversion of Nitrate and Nitrite to Nitrous Oxide for Nitrogen and Oxygen Isotopic Analysis in Freshwater and Seawater, Anal. Chem., 77, 5589–5595, https://doi.org/10.1021/ac050528s, 2005.

McKay, J. L. and Pedersen, T. F.: Geochemical response to pulsed sedimentation: implications for the use of Mo as a paleo-proxy, Chem. Geol., 382, 83–94, https://doi.org/10.1016/j.chemgeo.2014.05.009, 2014.

McKay, C. L., Groeneveld, J., Filipsson, H. L., Gallego-Torres, D., Whitehouse, M. J., Toyofuku, T., and Romero, O. E.: A comparison of benthic foraminiferal Mn / Ca and sedimentary Mn/Al as proxies of relative bottom-water oxygenation in the low-latitude NE Atlantic upwelling system, Biogeosciences, 12, 5415–5428, https://doi.org/10.5194/bg-12-5415-2015, 2015.
McKenzie, K. G., Majoran, S., Emami, E., and Reyment, R. A.: The KRITHE problem-first test of peypouquet's hypothesis, with a redistribution of KRITHE PRAETEXTA PRAETEXTA (crustacea, ostracoda), Palaeoceanogr. Palaeocl., 75, 343–354, https://doi.org/10.1016/0031-0182(89)90069-2, 1989.

McMahon, K. W., McCarthy, M. D., Sherwood, O. A., Larsen, T., and Guilderson, T. P.: Millennial-scale plankton regime shifts in the subtropical North Pacific Ocean, Science, 350, 1530–1533, https://doi.org/10.1126/science.aaa9942, 2015.

McManus, J., Berelson, W. M., Klinkhammer, G. P., Hammond, D. E., and Holm, C.: Authigenic uranium: Relationship to oxygen penetration depth and organic carbon rain, Geochim. Cosmochim. Ac., 69, 95–108, https://doi.org/10.1016/j.gca.2004.06.023, 2005.

McManus, J., Berelson, W. M., Severmann, S., Poulson, R. L., Hammond, D. E., Klinkhammer, G. P., and Holm, C.: Molybdenum and uranium geochemistry in continental margin sediments: paleoproxy potential, Geochim. Cosmochim. Ac., 70, 4643–4662, https://doi.org/10.1016/j.gca.2006.06.1564, 2006.

Meckler, A. N., Ren, H., Sigman, D. M., Gruber, N., Plessen, B., Schubert, C. J., and Haug, G. H.: Deglacial nitrogen isotope changes in the Gulf of Mexico: Evidence from bulk sedimentary and foraminifera-bound nitrogen in Orca Basin sediments, Paleoocean. Paleoclim., 26, 2011PA002156, https://doi.org/10.1029/2011PA002156, 2011.

Mees, F., Swennen, R., Geet, M. V., and Jacobs, P.: Applications of X-ray computed tomography in the geosciences, Geol. Soc. Spec. Publ., 215, 1–6, https://doi.org/10.1144/GSL.SP.2003.215.01.01, 2003.

Meilland, J., Siccha, M., Kaffenberger, M., Bijma, J., and Kucera, M.: Population dynamics and reproduction strategies of planktonic foraminifera in the open ocean, Biogeosciences, 18, 5789–5809, https://doi.org/10.5194/bg-18-5789-2021, 2021.

Mekik, F. and Anderson, R. F.: Is the core top modern? Observations from the eastern equatorial Pacific, Quaternary Sci. Rev., 186, 156–168, https://doi.org/10.1016/j.quascirev.2018.01.020, 2018.

Mena, A., Frances, G., Pérez-Arlucea, M., Aguiar, P., Barreiro-Vázquez, J. D., Iglesias, A., and Barreiro-Lois, A.: A novel sedimentological method based on CT-scanning: Use for tomographic characterization of the Galicia Interior Basin, Dorador, 321, 123–138, https://doi.org/10.1016/j.sedgeo.2015.03.007, 2015.

Menzel, D., Hopmans, E. C., Schouten, S., and Sinninghe Damsté, J. S.: Membrane tetraether lipids of planktonic Crenarchaeota in Pliocene sapropels of the eastern Mediterranean Sea, Palaeogeogr. Palaeocl., 239, 1–15, https://doi.org/10.1016/j.palaeo.2006.01.002, 2006.

Metcalf, W. W., Griffin, B. M., Cicchillo, R. M., Gao, J., Janga, S. C., Cooke, H. A., Circello, B. T., Evans, B. S., Martens-Habbena, W., Stahl, D. A., and van der Donk, W. A.: Synthesis of methylphosphonic acid by marine microbes: A source for methane in the aerobic ocean, Science, 337, 1104–1107, https://doi.org/10.1126/science.1219875, 2012.

Metzger, E., Simonucci, C., Viollier, E., Sarazin, G., Prévot, F., Elbaz-Poulichet, F., Seidel, J. L., and Jézéquel, D.: Influence of diagenetic processes in Thau lagoon on cadmium behavior and benthic fluxes. Estuar. Coast. Shelf Sci., 72, 497–510, https://doi.org/10.1016/j.ecss.2006.11.016, 2007.

Miller, C. A., Peucker-Ehrenbring, B., Walker, B. D., and Mar-cantonio, F.: Re-assessing the surface cycling of molybde-num and rhenium, Geochim. Cosmochim. Ac., 15, 7146–7179, https://doi.org/10.1016/j.gca.2011.09.005, 2011.

Miller, N., Dougherty, M., Du, R., Sauers, T., Yan, C., Pines, J. E., Meyers, K. L., Dang Y M., Nagle, E., Ni, Z., Pungsrisai, T., Wetherington, M. T., Vorlicek, T. P., Plass, K. E., and Morford, J. L.: Adsorption of Tetrathiomolybdate to Iron Sulfides and its Impact on Iron Sulfide Transformations, ACS Earth Space Chem., 4, 2246–2260, https://doi.org/10.1021/acsearthspacechem.0c00176, 2020.

Millero, F. J.: Chemical Oceanography, 2nd Edn., 469 pp., CRC Press, Boca Raton, Fla, 1996.

Mitra, R., Marchitto, T. M., Ge, Q., Zhong, B., Kanakiya, B., Cook, M. S., Fehrenbacher, J. S., Ortiz, J. D., Tripati, A., and Lobaton, E.: Automated species-level identification of planktic foraminifera using convolutional neural networks, with comparison to human performance, Mar. Micropaleontol., 147, 16–24, https://doi.org/10.1016/j.marmicro.2019.01.005, 2019.

Moffitt, S. E., Hill, T. M., Ohkushi, K., Kennett, J. P., and Behl, R. J.: Vertical oxygen minimum zone oscillations since 20 ka in Santa Barbara Basin: A benthic foraminiferal community perspective, Paleoocean. Paleoclim., 29, 44–57, https://doi.org/10.1002/2013PA002483, 2014.

Moffitt, S. E., Moffitt, R. A., Sauthoff, W., Davis, C. V., Hewett, K., and Hill, T. M.: Paleooceanographic insights on recent oxygen minimum zone expansion: lessons for modern oceanography, PloS one, 10, e0115246, https://doi.org/10.1371/journal.pone.0115246, 2015.

Mojtahid, M., Toucanne, S., Fentimen, R., Barras, C., Le Houedec, S., Soulet, G., Bourillet, J.-G., and Michel, E.: Changes in north-east Atlantic hydrology during Termination 1: Insights from Celtic margin's benthic foraminifera, Quaternary Sci. Rev., 175, 45–59, https://doi.org/10.1016/j.quascirev.2017.09.003, 2017.

Moodley, L. and Hess, C.: Tolerance of Infaunal Benthic Foraminifera for low and high oxygen concentrations, Biol. Bull, 183, 94–98, https://doi.org/10.2307/1542410, 1992.

Moodley, L., Van der Zwaan, G. J., Herman, P. M. J., Kem-pers, L., and Van Breugel, P.: Differential response of ben-thic meiofauna to anoxia with special reference to Foraminifera (Protista: Sarcodina), Mar. Ecol. Prog. Ser., 158, 151–163, https://doi.org/10.3354/meps15815, 1997.

Morard, R., Quillévéré, F., Escarguel, G., Uijijie, Y., de Garidel-Thoron, T., Norris, R. D., and de Vargas, C.: Morphological recognition of cryptic species in the planktonic foraminifer *Orbulina universa*, Mar. Micropal., 71, 148–165, https://doi.org/10.1016/j.marmicro.2009.03.001, 2009.

Moretti, S., Auderset, A., Deutsch, C., Schmitz, R., Gerber, L., Thomas, E., Luciani, V., Petrizzo, M. R., Schiebel, R., Tripati, A., Sexton, P., Norris, R., D'Onofrio, R., Zachos, J., Sigman, D. M., Haug, G. H., and Martínez-García, A.: Oxygen rise in the tropical upper ocean during the Paleocene-Eocene Thermal Maximum, Science, 383, 727–731, https://doi.org/10.1126/science.adh4893, 2024.

Morey, A. E., Mix, A. C., and Pisias, N. G.: Planktonic foraminiferal assemblages preserved in surface sediments correspond to multiple environment variables, Quaternary Sci. Rev., 24, 925–950, https://doi.org/10.1016/j.quascirev.2003.09.011, 2005.
Morford, J. L., Emerson, S. R., Breckel, E. J., and Kim, S. H.: Diagenesis of oxyanions (V, U, Re, and Mo) in pore waters and sediments from a continental margin, Geochim. Cosmochim. Ac., 69, 5021–5032, https://doi.org/10.1016/j.gca.2005.05.015, 2005.

Morford, J. L., Martin, W. R., Kalnejais, L. H., François, R., Bothner, M., and Karle, I.-M.: Insights on geochemical cycling of U, Re and Mo from seasonal sampling in Boston Harbor, Massachusetts, USA, Geochim. Cosmochim. Ac., 71, 895–917, https://doi.org/10.1016/j.gca.2006.10.016, 2007.

Morford, J. L. and Emerson, S.: The geochemistry of redox sensitive trace metals in sediments, Geochim. Cosmochim. Ac., 63, 1735–1750, https://doi.org/10.1016/S0016-7037(99)00126-X, 1999.

Morford, J. L., Martin, W. R., and Carney, C. M.: Uranium diagenesis in sediments underlying bottom waters with high oxygen content, Geochim. Cosmochim. Ac., 73, 2920–2937, https://doi.org/10.1016/j.gca.2009.02.014, 2009.

Morgan, J. J.: Kinetics of reaction between O₂ and Mn (II) species in aqueous solutions, Geochim. Cosmochim. Ac., 69, 35–48, https://doi.org/10.1016/j.gca.2004.06.013, 2005.

Moriyasu, R., Evans, N., Bolster, K. M., Hardisty, D. S., and Moffett, J. W.: The distribution and redox speciation of iodine in the eastern tropical North Pacific Ocean, Global Biogeochem. Cy., 34, e2019GB006302, https://doi.org/10.1029/2019GB006302, 2020.

Moriyasu, R., Bolster, K. M., Hardisty, D. S., Kadko, D. C., Stephens, M. P., and Moffett, J. W.: Meridional Survey of the Central Pacific Reveals Iodide Accumulation in Equatorial Surface Waters and Benthic Sources in the Abyssal Plain, Global Biogeochem. Cy., 37, e2021GB007300, https://doi.org/10.1029/2021GB007300, 2023.

Morrill, C., Thrasher, B., Lockshin, S. N., Gille, E.P., McNeill, S., Shepherd, E., Gross, W. S., and Bauer, B. A.: The Paleoenvironmental Standard Terms (PaST) Thesaurus: Standardizing Heterogeneous Variables in Paleoscience, Paleocean. Paleoclim., 36, e2020PA004193, https://doi.org/10.1029/2020PA004193, 2021.

Moss, F. R., Shuken, S. R., Mercer, J. A. M., Cohen, C. M., Weiss, T. M., Boxer, S. G., and Burns, N. Z.: Ladderane phospholipids form a densely packed membrane with normal hydrazine and anomalously low proton/hydroxide permeability, P. Natl. Acad. Sci. USA, 115, 9098–9103, https://doi.org/10.1073/pnas.1810706115, 2018.

Mouret, A., Anschutz, P., Lecroart, P., Chaillou, G., Hyacinthe, C., Deborde, J., Jorissen, F. J., Deflandre, B., Schmidt, S., and Jouanneau, J. M.: Benthic geochemistry of manganese in the Bay of Biscay, and sediment mass accumulation rate, Geo-Mar. Lett., 29, 133–149, https://doi.org/10.1007/s00367-008-0130-6, 2009.

Moy, A. D., Howard, W. R., Bray, S. G., and Trull, T. W.: Reduced calcification in modern southern ocean planktonic foraminifera, Nat. Geosci., 2, 276–280, https://doi.org/10.1038/ngeo460, 2009.

Mucci, A.: The behavior of mixed Ca–Mn carbonates in water and seawater: controls of manganese concentrations in marine porewaters, Aquat. Geochem., 10, 139–169, https://doi.org/10.1023/B:AQUA.0000038958.56221.b4, 2004.

Muglia, J., Mulitza, S., Repschläger, J., Schmittner, A., Lembke-Jene, L., Lisiecki, L., Mix, A., Saraswat, R., Sikes, E., Waelbroeck, C., Gottschalk, J., Lippold, J., Lund, D., Martinez-Mendez, G., Michel, E., Muschitiello, F., Naik, S., Okazaki,

Y., Stott, L., Voelker, A., and Zhao, N.: A global synthesis of high-resolution stable isotope data from benthic foraminifera of the last deglaciation, Sci. Data, 10, 131, https://doi.org/10.1038/s41597-023-02024-2, 2023.

Mulitza, S., Bickert, T., Bostock, H. C., Chiessi, C. M., Donner, B., Govin, A., Harada, N., Huang, E., Johnstone, H., Kuhnert, H., Langner, M., Lamy, F., Lembke-Jene, L., Lisiecki, L., Lynch-Stieglitz, J., Max, L., Mohtadi, M., Mollenhauer, G., Muglia, J., Nürnberg, D., Paul, A., Rühlemann, C., Repschläger, J., Saraswat, R., Schmittner, A., Sikes, E. L., Spielhagen, R. F., and Tiedemann, R.: World Atlas of late Quaternary Foraminiferal Oxygen and Carbon Isotope Ratios, Earth Syst. Sci. Data, 14, 2553–2611, https://doi.org/10.5194/essd-14-2553-2022, 2022.

Muñoz, P., Dezilaeau, L., Lange, C., Cardenas, L., Sellanes, J., Salamanca, M. A., and Maldonado, A.: Evaluation of sediment trace metal records as paleoproduc-tivity and paleoxygenation proxies in the upwelling cen-ter off Concepción, Chile, Prog. Oceanogr., 92–95, 66–80, https://doi.org/10.1016/j.pocean.2011.07.010, 2012.

Muñoz, P., Hevía-Hormazabal, V., Araya, K., Maldonado, A., and Salamanca, M.: Metal enrichment evolution in marine sediments influenced by oxygen-deficient waters in a mineral loading zone, Atacama, Chile (27° S), Mar. Environ. Res., 177, 105619, https://doi.org/10.1016/j.marenvres.2022.105619, 2022.

Muñoz, P., Castillo, A., Valdés, J., and Dewitte, B.: Oxidative conditions along the continental shelf of the Southeast Pacific during the last two millennia: a multiproxy interpretation of the oxygen minimum zone variability from sedimentary records, Front. Mar. Sci., 10, 1134164, https://doi.org/10.3389/fmars.2023.1134164, 2023.

Murray, J. W.: The niche of benthic foraminifera, critical thresholds and proxies, Mar. Micropaleontol., 41, 1–7, https://doi.org/10.1016/S0377-8398(00)00057-8, 2001.

Myhre, S. E., Kroeker, K. J., Hill, T. M., Roopnarine, P., and Kennett, J. P.: Community benthic paleoecology from high-resolution climate records: Mollusca and foraminifera in post-glacial environments of the California margin, Quaternary Sci. Rev., 155, 179–197, https://doi.org/10.1016/j.quascirev.2016.11.009, 2017.

Nakashima, Y. and Komatsubara, J.: Seismically induced soft-sediment deformation structures revealed by X-ray computed tomography of boring cores, Tectonophysics, 683, 138–147, https://doi.org/10.1016/j.tecto.2016.05.044, 2016.

Nardelli, M. P., Barras, C., Metzger, E., Mouret, A., Filipsson, H. L., Jorissen, F., and Geslin, E.: Experimental evidence for foraminiferal calcification under anoxia, Biogeosciences, 11, 4029–4038, https://doi.org/10.5194/bg-11-4029-2014, 2014.

Naeher, S., Schaeffer, P., Adam, P., and Schubert, C. J.: Maleimides in recent sediments – Using chlorophyll degradation products for palaeoenvironmental reconstructions, Geochim. Cosmochim. Ac., 119, 248–263, https://doi.org/10.1016/j.gca.2013.06.004, 2013.

Nägler, T. F., Anbar, A. D., Archer, C., Goldberg, T., Gordon, G. W., Greber, N. D., Siebert, C., Sohrin, Y., and Vance, D.: Proposal for an international molybdenum isotope measurement standard and data representation, Geostand. Geoanal. Res., 38, 149–151, https://doi.org/10.1111/j.1751-908X.2013.00275.x, 2013.

Nakada, R., Tanimizu, M., and Takahashi, Y.: Difference in the stable isotopic fractionations of Ce, Nd, and Sm during adsorp-
tion on iron and manganese oxides and its interpretation based on their local structures, Geochim. Cosmochim. Acta, 121, 105–119, https://doi.org/10.1016/j.gca.2013.07.014, 2013.

Nakagawa, Y., Takano, S., Firdaus, M. L., Norisuye, K., Hirata, T., Vance, D., and Sohrin, Y.: The molybdenum isotopic composition of the modern ocean, Geochem. J., 46, 131–141, https://doi.org/10.2343/geochemj.1.0158, 2012.

Nameroff, T. J., Balistrieri, L. S., and Murray, J. W.: Sub-oxic trace metal geochemistry in the Eastern Tropical North Pacific, Geochim. Cosmochim. Acta, 66, 1139–1158, https://doi.org/10.1016/S0016-7037(01)00843-2, 2002.

Nameroff, T. J., Calvert, S. E., and Murray, J. W.: Glacial-interglacial variability in the eastern tropical North Pacific oxygen minimum zone recorded by redox-sensitive trace metals, Paleocean. Paleoclim., 19, Pa1010, https://doi.org/10.1029/2003PA000912, 2004.

Neubert, N., Nägler, T. F., and Böttcher, M. E.: Sulfidity controls molybdenum isotope fractionation into euxinic sediments: Evidence from the modern Black Sea, Geology, 36, 775–778, https://doi.org/10.1130/G24959A.1, 2008.

Nguyen, T. M. P., Petrizzo, M. R., and Speijer, R. P.: Experimental dissolution of a fossil foraminiferal assemblage (Paleocene–Eocene Thermal Maximum, Dababiya, Egypt): Implications for paleoenvironmental reconstructions, Mar. Micropaleontol., 73, 241–258, https://doi.org/10.1016/j.marmicro.2009.10.005, 2009.

Nguyen, T. M. P., Petrizzo, M. R., Stassen, P., and Speijer, R. P.: Dissolution susceptibility of Paleocene–Eocene planktic foraminifera: Implications for palaeoceanographic reconstructions, Mar. Micropaleontol., 81, 1–21, https://doi.org/10.1016/j.marmicro.2011.07.001, 2011.

Nguyen, T. M. P. and Speijer, R. P.: A new procedure to assess dissolution based on experiments on Pliocene–Quaternary foraminifera (ODP Leg 160, Eratosthenes Seamount, Eastern Mediterranean), Mar. Micropaleontol., 106, 22–39, https://doi.org/10.1016/j.marmicro.2013.11.004, 2014.

Ni, S., Krupinski, N. Q., Groeneveld, J., Persson, P., Somogyi, A., Brinkmann, I., Knudsen, K. L., Seidenkrantz, M. S., and Filipsson, H. L.: Early diagenesis of foraminiferal calcite under anoxic conditions: A case study from the Landsort Deep, Baltic Sea (IODP Site M0063), Chem. Geol., 558, 119871, https://doi.org/10.1016/j.chemgeo.2020.119871, 2020.

Nicolo, M. J., Dickens, G. R., and Hollis, C. J.: South Pacific intermediate water oxygen depletion at the onset of the Paleocene–Eocene thermal maximum as depicted in New Zealand margin sections, Paleocean. Paleoclim., 25, PA4210, https://doi.org/10.1029/2009PA001904, 2010.

Nielsen, S. G., Rehkämper, M., Baker, J., and Halliday, A. N.: The precise and accurate determination of thallium isotope compositions and concentrations for water samples by MC-ICPMS, Chem. Geol., 204, 109–124, https://doi.org/10.1016/j.chemgeo.2003.11.006, 2004.

Nielsen, S. G., Goff, M., Hesselbo, S. P., Jenkyns, H. C., LaRowe, D. E., and Lee, C.-T. A.: Thallium isotopes in early diagenetic pyrite – A paleoredox proxy?, Geochim. Cosmochim. Ac., 75, 6690–6704, https://doi.org/10.1016/j.gca.2011.07.047, 2011.

Nielsen, S. G., Owens, J. D., and Horner, T. J.: Analysis of high-precision vanadium isotope ratios by medium resolution MC-ICP-MS, J. Anal. Atom. Spectrom., 31, 531–536, https://doi.org/10.1039/C5JA00397K, 2016.

Nielsen, S. G., Rehkämper, M., and Prytulak, J.: Investigation and Application of Thallium Isotope Fractionation, Rev. Mineral. Geochem., 82, 759–798, https://doi.org/10.2138/rmg.2017.82.18, 2017.

Nielsen, S. G. (Ed.): Vanadium Isotopes: A Proxy for Ocean Oxygen Variations, Cambridge University Press, Cambridge, United Kingdom, 32 pp., ISBN 9781108863438, 2020.

Niemann, H. and Elvert, M.: Diagnostic lipid biomarker and stable carbon isotope signatures of microbial communities mediating the anaerobic oxidation of methane with sulphate, Org. Geochem., 39, 1668–1677, https://doi.org/10.1016/j.orggeochem.2007.11.003, 2008.

Nomaki, H., Chikaraishi, Y., Tsuchiya, M., Toyofuku, T., Suga, H., Sasaki, Y., Uematsu, K., Tame, A., and Ohkouchi, N.: Variation in the nitrogen isotopic composition of amino acids in benthic foraminifera: Implications for their adaptation to oxygen-depleted environments, Limnol. Oceanogr., 60, 1906–1916, https://doi.org/10.1002/lno.10140, 2015.

Nomaki, H., Chen, C., Oda, K., Tsuchiya, M., Tame, A., Uematsu, K., and Isobe, N.: Abundant Chitinous Structures in *Chilostomella* (Foraminifera, Rhizaria) and Their Potential Functions, J. Eukaryot. Microbiol., 68, e12828, https://doi.org/10.1111/jeu.12828, 2021.

Nordberg, K., Gustafsson, M., and Krantz, A. L.: Decreasing oxygen concentrations in the Gullmar Fjord, Sweden, as confirmed by benthic foraminifera, and the possible association with NAO, J. Marine Syst., 23, 303–316, https://doi.org/10.1016/S0924-7963(99)00067-6, 2000.

Not, C., Brown, K., Ghaleb, B., and Hillaire-Marcel, C.: Conservative behavior of uranium vs. salinity in Arctic sea ice and brine, Mar. Chem., 130, 33–39, https://doi.org/10.1016/j.marchem.2011.12.005, 2012.

Nowicka, B. and Kruk, J.: Occurrence, biosynthesis and function of isoprenoid quinones, BBA – Bioenergetics, 1797, 1587–1605, https://doi.org/10.1016/j.bbabio.2010.06.007, 2010.

Nozaki, Y.: A fresh look at element distribution in the North Pacific Ocean, Eos, Trans. Am. Geophys. Union, 78, 221–221, https://doi.org/10.1029/97EO00148, 1997.

O’Brien, N. R.: Shale lamination and sedimentary processes, Geol. Soc. Lond. Spec. Publ., 116, 23–26, https://doi.org/10.1144/GSL.SP.1996.116.01.04, 1996.

Ofstad, S., Zamelczyk, K., Kimoto, K., Chierici, M., Fransson, A., and Rasmussen, T. L.: Shell density of planktonic foraminifera and pteropod species *Limacina helicina* in the Barents Sea: Relation to ontogeny and water chemistry, PLoS ONE, 16, e0249178, https://doi.org/10.1371/journal.pone.0249178, 2021.

Ohkouchi, N., Kashiyama, Y., Kuroda, J., Ogawa, N. O., and Kizatato, H.: The importance of diazotrophic cyanobacteria as primary producers during Cretaceous Oceanic Anoxic Event 2, Biogeosciences, 3, 467–478, https://doi.org/10.5194/bg-3-467-2006, 2006.

Ohkouchi, N., Chikaraishi, Y., Close, H. G., Fry, B., Larsen, T., Madigan, D. J., McCarthy, M. D., McMahon, K. W., Nagata, T., Naito, Y. I., Ogawa, N. O., Popp, B. N., Stefán, S., Takano, Y., Tayasu, I., Wyatt, A. S. J., Yamaguchi, Y. T., and Yokoyama, Y.: Advances in the application of amino acid nitrogen isotopic analysis in ecological and biogeochemical studies, Org. Geochem., 113, 150–174, https://doi.org/10.1016/j.orggeochem.2017.07.009, 2017.
Ohkushi, K., Kennett, J. P., Zeleski, C. M., Moffitt, S. E., Hill, T. M., Robert, C., Beaufort, L., and Behl, R. J.: Quantified intermediate water oxygenation history of the NE Pacific: A new benthic foraminiferal record from Santa Barbara basin, Paleocean. Paleoclim., 28, 453–467, https://doi.org/10.1002/palo.20043, 2013.

Ogawa, N. O., Nagata, T., Kitazato, H., and Ohkouchi, N.: Ultra-sensitive elemental analyzer/isotope ratio mass spectrometer for stable nitrogen and carbon isotope analyses, in: Earth Life Isotopes, edited by: Ohkouchi, N., Tayasu, I., and Koba, K., Kyoto University Press, Kyoto, Japan, 339–353, ISBN-10: 4876989605, 2010.

Oldham, V. E., Owings, S. M., Jones, M. R., Tebo, B. M., and Luther, G. W.: Evidence for the presence of strong Mn(III)-binding ligands in the water column, Mar. Chem. 171, 58–66, https://doi.org/10.1016/j.marchem.2015.02.008, 2015.

Oldham, V. E., Mucci, A., Tebo, B. M., and Luther III, G. W.: Soluble Mn (III)-L complexes are abundant in oxygenated waters and stabilized by humic ligands, Geochim. Cosmochim. Ac., 199, 238–246, https://doi.org/10.1016/j.gca.2016.11.043, 2017.

Oldham, V. E., Jones, M. R., Tebo, B. M., and Luther III, G. W.: Oxidative and reductive processes contributing to manganese cycling at oxic-anoxic interfaces, Mar. Chem., 195, 122–128, https://doi.org/10.1016/j.marchem.2017.06.002, 2017.

Oliver, K. I. C., Hoogakker, B. A. A., Crowhurst, S., Henderson, G. M., Rickaby, R. E. M., Edwards, N. R., and Elderfield, H.: A synthesis of marine sediment core $\delta^{13}$C data over the last 15 000 years, Clim. Past, 6, 645–673, https://doi.org/10.5194/cp-6-645-2010, 2010.

Orr, W. L. and White, C. M. (Eds.): Geochemistry of sulfur in fossil fuels, ACS Symposium Series, American Chemical Society, Washington DC, ISBN 780841218048, https://doi.org/10.1021/bk-1990-0429, 1990.

Orsi, T. H., Edwards, C. M., and Anderson, A. L.: X-ray computed tomography: a nondestructive method for quantitative analysis of sediment cores, J. Sed. Res., 64, 690–693, https://doi.org/10.1306/D4267E74-2B26-11D7-8648000102C1865D, 1994.

Orsi, W. D., Morard, R., Vuillemin, A., Eitel, M., Wörheide, G., Milucka, J., and Kucera, M.: Anaerobic metabolism of Foraminifera thriving below the seafloor, ISME J., 14, 2580–2594, https://doi.org/10.1038/s41396-020-0708-1, 2020.

Oschlies, A., Brandt, P., Stramma, L., and Schmidtko, S.: Drivers and mechanisms of ocean deoxygenation, Nat. Geosci., 11, 467–473, https://doi.org/10.1038/s41561-018-0152-2, 2018.

Oschlies, A.: A committed fourfold increase in ocean oxygen loss, Nat. Commun., 12, 2307, https://doi.org/10.1038/s41467-021-22584-4, 2021.

Owens, J. D., Nielsen, S. G., Horner, T. J., Ostrander, C. M., and Peterson, L. C.: Thallium-isotopic compositions of euxinic sediments as a proxy for global manganese-oxide burial, Geochim. Cosmochim. Ac., 213, 291–307, https://doi.org/10.1016/j.gca.2017.06.041, 2017.

Owens, J. D.: Application of thallium isotopes: Tracking marine oxygenation through manganese oxide burial, Cambridge University Press, Cambridge, United Kingdom, 21 pp., ISBN 9781108688697, https://doi.org/10.1017/9781108688697, 2019.

Pacho, L., de Nooijer, L., and Reichart, G.-J.: Element/Ca ratios in Nodosariida (Foraminifera) and their potential application for

paleoenvironmental reconstructions, Biogeosciences, 20, 4043–4056, https://doi.org/10.5194/bg-20-4043-2023, 2023.

Padilla, C. C., Bristow, L. A., Sarode, N., Garcia-Robledo, E., Gómez Ramírez, E., Benson, C. R., Bournonnais, A., Altabet, M. A., Girgius, P. R., Thamdrup, B., and Stewart, F. J.: NC10 bacteria in marine oxygen minimum zones, ISME J., 10, 2067–2071, https://doi.org/10.1038/ismej.2015.262, 2016.

Palmer, H. M., Hill, T. M., Roopnarine, P. D., Myhre, S., Reyes, K. R., and Donnenfield, J. T.: Southern California margin benthic foraminiferal assemblages record recent centennial-scale changes in oxygen minimum zone, Biogeosciences, 17, 2923–2937, https://doi.org/10.5194/bg-17-2923-2020, 2020.

Paoloni, T., Hoogakker, B., Navarro Rodriguez, A., Pereira, R., McClymont, E. L., Jovane, L., and Magill, C.: Composition of planktonic foraminifera test-bound organic material and implications for carbon cycle reconstructions, Front. Mar. Sci., 10, 1237440, https://doi.org/10.3389/fmars.2023.1237440, 2023.

Paradis, S., Nakajima, K., Van der Voort, T. S., Gies, H., Wildberger, A., Blattmann, T. M., Bröder, L., and Eglinton, T. I.: The Modern Ocean Sediment Archive and Inventory of Carbon (MOSAIC): version 2.0, Earth Syst. Sci. Data, 15, 4105–4125, https://doi.org/10.5194/essd-15-4105-2023, 2023.

Pardo, A., Keller, G., Molina, E., and Canudo, J.: Planktic foraminiferal turnover across the Paleocene-Eocene transition at DSDP site 401, Bay of Biscay, North Atlantic, Mar. Micropaleontol., 29, 129–158, https://doi.org/10.1016/S0377-8398(96)00035-7, 1997.

Paropkari, A. L., Babu, C. P., and Mascarenhas, A.: A Critical-Evaluation of Depositional Parameters Controlling the Variability of Organic-Carbon in Arabian Sea Sediments, Mar. Geol., 107, 213–226, https://doi.org/10.1016/0025-3227(92)90168-H, 1992.

Paropkari, A. L., Mascarenhas, A., and Babu, C. P.: Comment on “Lack of enhanced preservation of organic matter in sediments under the oxygen minimum on the Oman Margin” by T. F. Pedersen, G. B. Shimmield, and N. B. Price Geochim. Cosmochim. Ac., 57, 2399–2401, https://doi.org/10.1016/0016-7037(93)90578-K, 1993.

Patterson, R. T. and Fishbein, E.: Re-examination of the statistical methods used to determine the number of point counts needed for micropaleontological quantitative research, J. Paleont., 63, 245–248, 1989.

Pavia, F. J., Wang, S., Middleton, J., Murray, R. W., and Anderson, R. F.: Trace metal evidence for deglacial ventilation of the abyssal Pacific and Southern Oceans, Paleocean. Paleoclim., 36, e2021PA004226, https://doi.org/10.1029/2021PA004226, 2021.

Pawłowska, J., Pawłowski, J., and Zajączkowski, M.: Ancient foraminiferal DNA: A new paleoceanographic proxy, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-9392, https://doi.org/10.5194/egusphere-egu22-9392, 2022.

Pearson, A., Hurley, S. J., Walter, S. R. S., Kusch, S., Lichtin, S., and Zhang, Y. G.: Stable carbon isotope ratios of intact GDGTs indicate heterogeneous sources to marine sediments, Geochim. Cosmochim. Ac., 181, 18–35, https://doi.org/10.1016/j.gca.2016.02.034, 2016.

Pedersen, T. F., Shimmield, G. B., and Price, N. B.: Lack of enhanced preservation of organic matter in sediments under the oxygen minimum on the Oman Margin, Geochim. Cosmochim.
Ac., 56, 545–551, https://doi.org/10.1016/0016-7037(92)90152-9, 1992.

Penn, J. L. and Deutch, C.: Avoiding ocean mass extinction from climate warming, Science, 376, 6592, https://doi.org/10.1126/science.abe9039, 2022.

Perez-Cruz, L. L. and Machain-Castillo, M.L.: Benthic foraminifera of the oxygen minimum zone, continental shelf of the Gulf of Tehuantepec, Mexico, J. Foramin. Res., 20, 312–325, https://doi.org/10.2113/gsjfr.20.4.312, 1990.

Peters, K. E., Walters, C. C., and Moldowan, J. M. (Eds.): The biomarker guide, Vol. 1, Biomarkers in the environment and human history, Cambridge University Press, Cambridge, UK, 471 pp., ISBN 9780511524868, https://doi.org/10.1017/CBO9780511524868, 2005.

Petersen, J., Riedel, B., Barras, C., Pays, O., Guihéneuf, A.,MBilleau, G., Schweizer, M., Meysman, F. J. R., and Jorissen, F.: Improved methodology for measuring pore patterns in the benthic foraminiferal genus Ammonia, Mar. Micropaleontol., 128, 1–13, https://doi.org/10.1016/j.marmicro.2016.08.001, 2016.

Petersen, J., Barras, C., Bézos, A., La, C., de Nooijer, L. J., Meysman, F. J. R., Mouret, A., Slomp, C. P., and Jorissen, F. J.: Mn/Ca intra- and inter-test variability in the benthic foraminiferal Ammonia tepida, Biogeosciences, 15, 331–348, https://doi.org/10.5194/bg-15-331-2018, 2018.

Pettit, L. R., Hart, M. B., Medina-Sánchez, A. N., Smart, C. W., Rodolfo-Metalpa, R., Hall-Spencer, J. M., and Prol-Ledesma, R. M.: Benthic foraminifera show some resilience to ocean acidification in the northern Gulf of California, Mexico, Mar. Pollut. Bull., 73, 452–462, https://doi.org/10.1016/j.marpolbul.2013.02.011, 2013.

Phleger, F. B. and Soutar, A.: Production of benthic foraminifera in three east Pacific oxygen minima, Micropaleontology, 19, 110–115, https://doi.org/10.2307/1484973, 1973.

Pike, J., Bernard, J. M., Moreton, S. G., and Butkler, I. B.: Microirrigation of marine sediments in dysoxic environments: implications for early sediment fabric formation and diagenetic processes, Geology, 29, 923–926, https://doi.org/10.1130/0091-7613(2001)029<0923:MOMSID>2.0.CO;2, 2001.

Piña-Ochoa, E., Høgslund, S., Geslin, E., Cedhagen, T., Revsbech, N. P., Nielsen, L. P., Schweizer, M., Jorissen, F., Rysgaard, S., and Risgaard-Petersen, N.: Widespread occurrence of nitrate storage and denitrification among Foraminifera and *Gromiida*, P. Natl. Acad. Sci. USA, 107, 1148–1153, https://doi.org/10.1073/pnas.0908440107, 2010a.

Piña-Ochoa, E., Koho, K. A., Geslin, E., and Risgaard-Petersen, N.: Survival and life strategy of the foraminiferan Globobulimina turgida through nitrate storage and denitrification, Mar. Ecol. Prog. Ser., 417, 39–49, https://doi.org/10.3354/meps08805, 2010b.

Pizarro, J., Vergara, P. M., Rodríguez, J. A., and Valenzuela, A. M.: Heavy metals in northern Chilean rivers: Spatial variation and temporal trends, J. Hazard. Mater., 181, 747–754, https://doi.org/10.1016/j.jhazmat.2010.05.076, 2010.

Podder, J., Lin, J., Sun, W., Botis, S.M., Tse, J., Chen, N., Hu, Y., Li, D., Seaman, J., and Pan, Y.: Iodate in calcite and vaterite: Insights from synchrotron X-ray absorption spectroscopy and first-principles calculations, Geochim. Cosmochim. Ac., 198, 218–228, https://doi.org/10.1016/j.gca.2016.11.032, 2017.

Polik, C. A., Elling, F. J., and Pearson, A.: Impacts of Paleooecology on the TEX<sub>86</sub> Sea Surface Temperature Proxy in the Pliocene-Pleistocene Mediterranean Sea, Paleocean. Paleoclim., 33, 1472–1489, https://doi.org/10.1029/2018PA003494, 2018.

Polissar, P. J., Fulton, J. M., Junium, C. K., Turich, C. C., and Freeman, K. H.: Measurement of ¹³C and ¹⁵N Isotopic Composition on Nanomolar Quantities of C and N, Anal. Chem., 81, 755–763, https://doi.org/10.1021/ac801370c, 2009.

Prahl, F. G., De Lange, G. J., Lyle, M., and Sparrow, M. A.: Post-Depositional Stability of Long-Chain Alkenones under Contrasting Redox Conditions, Nature, 341, 434–437, https://doi.org/10.1038/341434a0, 1989.

Prahl, F. G., Pinto, L. A., and Sparrow, M. A.: Phytane from chemolytic analysis of modern marine sediments: a product of desulfurization or not?, Geochim. Cosmochim. Ac., 60, 1065–1073, https://doi.org/10.1016/0016-7037(95)00450-5, 1996.

Prahl, F. G., Pilskaln, C. H., and Sparrow, M. A.: Seasonal record for alkenones in sedimentary particles from the Gulf of Maine, Deep-Sea Res. Pt. I, 48, 515–518, https://doi.org/10.1016/S0967-0637(00)00057-1, 2001.

Prazeres, M., Uthicke, S., and Pandolfi, J. M.: Ocean acidification induces biochemical and morphological changes in the calcification process of large benthic foraminifera, Proc. R. Soc. B, 282, 20142782, https://doi.org/10.1098/rspb.2014.2782, 2015.

Qin, L. and Wang, X.: Chromium Isotope Geochemistry, Rev. Mineral. Geochem., 82, 379–414, https://doi.org/10.2138/rmg.2017.82.10, 2017.

Rabalais, N. N., Turner, R. E., and Wiseman, W. J.: Gulf of Mexico hypoxia, aka “The dead zone”, Annu. Rev. Ecol. Syst., 33, 253–263, https://doi.org/10.1146/annurev.ecolsys.33.010802.150513, 2002.

Rabalais, N. N.: Chapter 5 Eutrophication of estuarine and coastal ecosystems, In: Environmental Microbiology, edited by: Mitchell, R. and Gum J.-D., Wiley, ISBN:9780470177907, 115–134, https://doi.org/10.1002/9780470495117.ch5, 2009.

Rabalais, N. N., Diaz, R. J., Levin, L. A., Turner, R. E., Gilbert, D., and Zhang, J.: Dynamics and distribution of natural and human-caused hypoxia, Biogeosciences, 7, 585–619, https://doi.org/10.5194/bg-7-585-2010, 2010.

Raiswell, R., Hardisty, D.S., Lyons, T. W., Canfield, D. E., Owens, J. D., Planavsky, N. J., Poulton, S. W., and Reinhard, C. T.: The iron paleoredox proxies: A guide to the pitfalls, problems and proper practice, Am. J. Sci., 318, 491–526, https://doi.org/10.2475/05.2018.03, 2018.

Raitzsch, M., Kuhnert, H., Hathorne, E. C., Groeneveld, J., and Bickert, T.: U/ Ca in benthic foraminifers: A proxy for the deep-sea carbonate saturation, Geochem. Geophy. Geosy., 12, Q06019, https://doi.org/10.1029/2010GC003344, 2011.

Rapp, I., Schlosser, C., Browning, T. J., Wolf, F., Le Moigne, F. A., Gledhill, M., and Achterberg, E. P.: El Niño-driven oxygenation impacts Peruvian shelf iron supply to the South Pacific Ocean, Geophys. Res. Lett., 47, e2019GL086631, https://doi.org/10.1029/2019GL086631, 2020.

Rathburn, A. E., Willingham, J., Ziebis, W., Burkett, A. M., and Corliss, B. H.: A New biological proxy for deep-sea paleo-oxygen: Pores of epifaunal benthic foraminifera, Sci. Rep., 8, 9456, https://doi.org/10.1038/s41598-018-27793-4, 2018.

Raven, M. R., Fike, D. A., Gomes, M. L., Webb, S. M., Bradley, A. S., and McClelland, H.-L. O.: Organic carbon burial during
OAE2 driven by changes in the locus of organic matter sulfurization, Nat. Commun., 9, 3409, https://doi.org/10.1038/s41467-018-05943-6, 2018.

Raven, M., Adkins, J. F., Werne, J. P., Lyons, T. W., and Sessions, A. L.: Sulfur isotopic composition of individual organic compounds from Cariaco Basin sediments, Org. Geochem., 80, 53–59, https://doi.org/10.1016/j.orggeochem.2015.01.002, 2015.

Raven, M. R., Keil, R. G., and Webb, S. M.: Microbial sulfate reduction and organic sulfur formation in sinking marine particles, Science, 371, 178–181, https://doi.org/10.1126/science.abc6035, 2021a.

Raven, M. R., Keil, R. G., and Webb, S. M.: Rapid, Concurrent formation of organic sulfur and iron sulfides during experimental sulfurization of sinking marine particles, Global Biogeochem. Cy., 35, e2021GB007062, https://doi.org/10.1029/2021GB007062, 2021b.

Reddin, C. J., Nätscher, P. S., Kocsis, Á. T., Pörtner, H. O., and Kiessling, W.: Marine clade sensitivities to climate change conform across timescales, Nat. Clim. Change, 10, 249–253, https://doi.org/10.1038/s41558-020-0690-7, 2020.

Reinhard, C. T., Planavsky, N. J., Wang, X., Fischer, W. W., Johnson, T. M., and Lyons, T. W.: The isotopic composition of au-thigenic chromium in anoxic marine sediments: A case study from the Cariaco Basin, Earth Planet. Sc. Lett., 407, 9–18, https://doi.org/10.1016/j.epsl.2014.09.024, 2014.

Ren, H., Sigman, D. M., Meckler, A. N., Plessen, B., Robinson, R. S., Rosenthal, Y., and Haug, G. H.: Foraminiferal Isotope Evidence of Reduced Nitrogen Fixation in the Ice Age Atlantic Ocean, Science, 323, 244–248, https://doi.org/10.1126/science.1165787, 2009.

Ren, H., Sigman, D. M., Chen, M.-T., and Kao, S.-J.: Elevated foraminifera-bound nitrogen isotopic composition during the last ice age in the South China Sea and its global and regional implications: FB-$\delta^{15}$N RECORD IN SOUTH CHINA SEA, Glob. Biogeochem. Cy., 26, GB1031, https://doi.org/10.1029/2010GB004020, 2012a.

Ren, H., Sigman, D. M., Thunell, R. C., and Prokopenko, M. G.: Nitrogen isotopic composition of planktonic foraminifera from the modern ocean and recent sediments, Limnol. Oceanogr., 57, 1011–1024, https://doi.org/10.4319/lo.2012.57.4.1011, 2012b.

Reyes-Umana, V., Henning, Z., Lee, K., Barnum, T. P., and Coates, J. D.: Genetic and phylogenetic analysis of dissimilatory iodate-reducing bacteria identifies potential niches across the world's oceans ISME J., 16, 38–49, https://doi.org/10.1038/s41396-021-01034-5, 2022.

Řezanka, T., Siristova, L., Melzoch, K., and Sigler, K.: N-acylated bacteriohopanehexol-mannosamides from the thermophilic bacterium *Alicyclobacillus acidoterrestris*, Lipids 46, 249–261, https://doi.org/10.1007/s11745-010-3482-4, 2011.

Rhoads, D. C. and Morse, J. W.: Evolutionary and ecologic significance of oxygen-deficient marine basins, Lethaia, 4, 413–428, https://doi.org/10.1111/j.1502-3931.1971.tb01864.x, 1971.

Richirt, J., Champmartin, S., and Schweizer, M., Mouret, A., Petersen, J., Ambari, A., and Jorissen, F.: Scaling laws explain foraminiferal pore patterns, Sci. Rep., 9, 9149, https://doi.org/10.1038/s41598-019-45617-x, 2019.

Richirt, J., Guilhéneuf, A., Mouret, A., Schweizer, M., Slomp, C. P., and Jorissen, F. J.: A historical record of benthic foraminifera in seasonally anoxic Lake Grevelin-

gen, the Netherlands, Palaeogeogr. Palaeocl., 599, 111057, https://doi.org/10.1016/j.palaeo.2022.111057, 2022.

Richmond, T., Cole, J., Dangler, G., Daniele, M., Marchitto, T., and Lobaton, E.: Forabot: Automated planktic foraminifera isolation and imaging, Geochem. Geophy. Geosy., 23, e2022GC010689, https://doi.org/10.1029/2022GC010689, 2022.

Riedinger, N., Scholz, F., Abshire, M. L., and Zabel, M.: Persistent deep water anoxia in the eastern South Atlantic during the last ice age, P. Natl. Acad. Sci., 118, e2107034118, https://doi.org/10.1073/pnas.2107034118, 2021.

Ripperger, S., Rehkämper, M., Porcelli, D., and Halliday, A. N.: Cadmium isotope fractionation in seawater – A signature of biological activity, Earth Planet. Sc. Lett., 261, 670–684, https://doi.org/10.1016/j.epsl.2007.07.034, 2007.

Risgaard-Petersen, N., Langezaal, A. M., Ingvardsen, S., Schmid, M. C., Jetten, M. S., Op den Camp, H. J., Derksen, J. W., Piña-Ochoa, E., Eriksson, S. P., Nielsen, L. P., Revsbech, N. P., Cedhagen, T., and van der Zwaan, G. J.: Evidence for complete denitrification in a benthic foraminifer, Nature, 443, 93–96, https://doi.org/10.1038/nature05070, 2006.

Robinson, R. S. and Sigman, D. M.: Nitrogen isotopic evidence for a poleward decrease in surface nitrate within the ice age Antarctic, Quaternary Sci. Rev., 27, 1076–1090, https://doi.org/10.1016/j.quascirev.2008.02.005, 2008.

Robinson, R. S., Kienast, M., Luiza Albuquerque, A., Altabet, M., Contreras, S., De Pol Holz, R., Dubois, N., Francois, R., Galbraith, E., Hsu, T.-C., Ivanochko, T., Jaccard, S., Kao, S.-J., Kiefer, T., Kienast, S., Lehmann, M., Martinez, P., McCarthy, M., Möbius, J., Pedersen, T., Quan, T. M., Ryabenko, E., Schmittner, A., Schneider, R., Schneider-Mor, A., Shigemitsu, M., Sinclair, D., Somes, C., Studer, A., Thunell, R., and Yang, J.-Y.: A review of nitrogen isotopic alteration in marine sediments: N isotopic alteration in marine sediment, Paleocean. Paleoclim., 27, PA4203, https://doi.org/10.1029/2012PA002321, 2012.

Robinson, R. S., Etourneau, J., Martinez, P. M., and Schneider, R.: Expansion of pelagic denitrification during early Pleistocene cooling, Earth Planet. Sc. Lett., 389, 52–61, https://doi.org/10.1016/j.epsl.2013.12.022, 2014.

Robinson, R. S., Moore, T. C., Erhardt, A. M., and Scher, H. D.: Evidence for changes in subsurface circulation in the late Eocene equatorial Pacific from radiolarian-bound nitrogen isotope values, Paleocean. Paleoclim., 30, 912–922, https://doi.org/10.1002/2015PA002777, 2015.

Rodrigo-Gámiz, M., Rampen, S. W., Schouten, S., and Sinninghe Damsté, J. S.: The impact of oxic degradation on long chain alkyl diol distributions in Arabian Sea surface sediments, Org. Geochem., 100, 1–9, https://doi.org/10.1016/j.orggeochem.2016.07.003, 2016.

Rodríguez-Tovar, F. J. and Uchman, A.: Ichnological data as a useful tool for deep-sea environmental characterization: a brief overview and an application to recognition of small-scale oxygenation changes during the Cenomanian–Turonian anoxic event, Geo.-Mar. Lett., 31, 525–536, https://doi.org/10.1007/s00367-011-0237-z, 2011.

Rodríguez-Tovar, F. J.: Ichnology of the Toarcian Oceanic Anoxic Event: An underestimated tool to assess palaeoenvironmental interpretations, Earth-Sci. Rev., 216, 103579, https://doi.org/10.1016/j.earscirev.2021.103579, 2021.
Rodriguez-Tovar, F. J.: Ichnological analysis: A tool to characterize deep-marine processes and sediments, Earth-Sci. Rev., 228, 104014, https://doi.org/10.1016/j.earscirev.2022.104014, 2022.

Rohmer, M., Bouvier-Nave, P., and Ourisson, G.: Distribution of hopanoid triterpenes in prokaryotes, Microbiology, 130, 1137–1150, https://doi.org/10.1099/00221287-130-5-1137, 1984.

Rolison, J. M., Stirling, C. H., Middag, R., and Rijkenberg, M. J.: Uranium stable isotope fractionation in the Black Sea: Modern calibration of the $2^{38}U/2^{35}U$ paleo- redox proxy, Geochim. Cosmochim. Ac., 203, 69–88, https://doi.org/10.1016/j.gca.2016.12.014, 2017.

Rontani, J. F. and Volkman, J. K.: Phytol degradation products as biogeochemical tracers in aquatic environments, Org. Geochem., 34, 1–35, https://doi.org/10.1016/S0146-6380(02)00185-7, 2003.

Rosenberg, Y. O., Kutuzov, I., and Amrani, A.: Sulfurization as a preservation mechanism for the $\delta^{13}\text{C}$ of biomarkers, Org. Geochem., 125, 66–69, https://doi.org/10.1016/j.orggeochem.2018.08.010, 2018.

Rosenberg, Y. O., Meshoulam, A., Said-Ahmad, W., Shawar, L., Dror, G., Reznik, I. J., Feinstein, S., and Amrani, A.: Study of thermal maturation processes of sulfur-rich source rock using compound specific sulfur isotope analysis, Org. Geochem., 112, 59–74, https://doi.org/10.1016/j.orggeochem.2017.06.005, 2017.

Rosenthal, Y., Boyle, E. A., Labeyrie, L., and Oppo, D.: Glacial enrichments of authigenic Cd And U in subantarctic sediments: A climatic control on the elements’ oceanic budget?, Paleocean. Paleoclim., 10, 395–413, https://doi.org/10.1029/95PA00310, 1995.

Ross, B. J. and Hallock, P.: Dormancy in the foraminifera: A review, J. Foramin. Res., 46, 358–368, https://doi.org/10.2113/gsjfr.46.4.358, 2016.

Rossel, P. E., Elvert, M., Ramette, A., Boetius, A., and Hinrichs, K.-U.: Factors controlling the distribution of anaerobic methanotrophic communities in marine environments: Evidence from intact polar membrane lipids, Geochim. Cosmochim. Ac., 75, 164–184, https://doi.org/10.1016/j.gca.2010.09.031, 2011.

Rudnick, R. L. and Gao, S.: Composition of the continental crust, in: Treatise on Geochemistry, Vol. 3, edited by: Holland, H. D. and Turekian, K. K., Elsevier Science, USA, 1–64, https://doi.org/10.1016/B0-08-043751-6/03016-4, 2003.

Rue, E. L., Smith, G. J., Cutter, G. A., and Bruland, K. W.: The response of trace element redox couples to suboxic conditions in the water column, Deep-Sea Res. Pt. I, 44, 113–134, https://doi.org/10.1016/S0967-0637(96)00088-X, 1997.

Rush, D. and Sinninghe Damsté, J. S.: Lipids as paleomarkers to constrain the marine nitrogen cycle: Lipids as paleomarkers, Environ. Microbiol., 19, 2119–2132, https://doi.org/10.1111%2F1462-2920.13682, 2017.

Rush, D., Jaeschke, A., Hopmans, E. C., Geenevasen, J. A. J., Schouten, S., Sinninghe Damsté, J. S. Short chain ladderanes: Oxic biodegradation products of anammox lipids, Geochim. Cosmochim. Ac., 75, 1662–1671, https://doi.org/10.1016/j.gca.2011.01.013, 2011.

Rush, D., Wakeham, S. G., Hopmans, E. C., Schouten, S., Sinninghe Damsté, J. S.: Biomarker evidence for anammox in the oxygen minimum zone of the Eastern Tropical North Pacific, Org. Geochem., 53, 80–87, https://doi.org/10.1016/j.orggeochem.2012.02.005, 2012.

Rush, D., Sinninghe Damsté, J. S., Poulton, S. W., Thamdrup, B., Garside, A. L., González, J. A., Schouten, S., Jetten, M. S. M., and Talbot, H. M.: Anaerobic ammonium-oxidising bacteria: A biological source of the bacteriohopanetetrol stereoisomer in marine sediments, Geochim. Cosmochim. Ac., 140, 50–64, https://doi.org/10.1016/j.gca.2014.05.014, 2014.

Rush, D., Osborne, K. A., Birgel, D., Kappler, A., Hirayama, H., Peckmann, J., Poulton, S. W., Nickel, J. C., Mangelsdorf, K., Kalyuzhnaya, M., Sidgwick, F. R., and Talbot, H. M.: The bacteriohopanopolyol inventory of novel aerobic methane oxidising bacteria reveals new biomarker signatures of aerobic methanotrophy in marine systems, PLoS ONE, 11, e0165635-27, https://doi.org/10.1371/journal.pone.0165635, 2016.

Rush, D., Talbot, H. M., Meer, M. van der, Hopmans, E. C., Douglas, B., and Sinninghe Damsté, J. S.: Biomarker evidence for the occurrence of anaerobic ammonium oxidation in the eastern Mediterranean Sea during Quaternary and Pliocene sapropel formation, Biogeosciences, 16, 2467–2479, https://doi.org/10.5194/bg-16-2467-2019, 2019.

Russell, A. D., Emerson, S., Nelson, B. K., Erez, J., and Lea, D. W.: Uranium in foraminiferal calcite as a recorder of seawater uranium concentrations, Geochim. Cosmochim. Ac., 58, 671–681, https://doi.org/10.1016/0016-7037(94)90497-9, 1994.

Ryabenko, E.: Stable Isotope Methods for the Study of the Nitrogen Cycle, in: Topics in Oceanography, edited by: Zambianchi, E., InTech, https://doi.org/10.5772/56105, 2013.

Sachs, J. P. and Repeta, D. J.: Oligotrophy and Nitrogen Fixation During Eastern Mediterranean Sapropel Events, Science, 286, 2485–2488, https://doi.org/10.1126/science.286.5449.2485, 1999.

Sáenz, J. P., Waterbury, J. B., Eglinton, T. I., and Summons, R. E.: Hopanoids in marine cyanobacteria: probing their phylogenetic distribution and biological role, Geobiology, 10, 311–319, https://doi.org/10.1111/j.1472-4669.2012.00318.x, 2012.

Sakata, S., Hayes, J. M., Rohmer, M., Hooper, A. B., and Seemann, M.: Stable carbon-isotopic compositions of lipids isolated from the ammonia-oxidizing chemoautotroph Nitrosomonas europaea, Org. Geochem., 39, 1725–1734, https://doi.org/10.1016/j.orggeochem.2008.08.005, 2008.

Salvatteci, R., Guttiéres, D., Field, D., Sifeddine, A., Ortlieb, L., Bouloubassi, I., Boussafir, M., Boucher, M., and Cetin, F.: The response of the Peruvian Upwelling Ecosystem to centennial-scale global change during the last two millennia, Clim. Past, 10, 715–731, https://doi.org/10.5194/cp-10-715-2014, 2014.

Salvatteci, R., Guttiéres, D., Sifeddine, A., Ortlieb, L., Druffel, E., Boussafir, and Schneider, R.: Centennial to millennial-scale changes in oxygenation and productivity in the Eastern Tropical South Pacific during the last 25,000 years, Quaternary Sci. Rev., 131, 102–117, https://doi.org/10.1016/j.quascirev.2015.10.044, 2016.

Sampaio, E., Santos, C., Rosa, I. C., Ferreira, V., Pörtner, H. O., Duarte, C. M., Levin, L. A., and Rosa, R.: Impacts of hypoxic events surpass those of future ocean warming and acidification, Nat. Ecol. Evol., 5, 311–321, https://doi.org/10.1038/s41559-020-01370-3, 2021.

Sarmiento, J. L. and Gruber, N. (Eds.): Ocean Biogeochemical Dynamics, Princeton University Press, New Jersey, USA, 528 pp., ISBN 9780691017075, 2006.
Schaeffer, P., Adam, P., Wehrung, P., and Albrecht, P.: Novel aromatic carotenoid derivatives from sulfur photosynthetic bacteria in sediments, Tetrahedron Lett., 38, 8413–8416, https://doi.org/10.1016/S0040-4039(97)10235-0, 1997.

Schiebel, R. and Hemleben, C.: Planktic Foraminifers in the Modern Ocean, 2nd ed., Springer Berlin, Heidelberg, Berlin, Germany, 358 pp., https://doi.org/10.1007/978-3-662-50297-6, 2017.

Schlitzer, R., Anderson, R. F., Masferrer Dodas, E., et al.: The GEO-TRACES Intermediate Data Product 2017, Chem. Geol., 493, 210–223, https://doi.org/10.1016/j.chemgeo.2018.05.040, 2018.

Schmidt, R. A. M.: Microradiography of microfossils with X-ray diffraction equipment, Science, 115, 94–95, https://doi.org/10.1126/science.115.2978.94, 1952.

Schmidt, D. N., Rayfield, E. J., Cocking, A., and Marone, F.: Linking evolution and development: Synchrotron radiation X-ray tomographic microscopy of planktic foraminifers, Palaeontology, 56, 741–749, https://doi.org/10.1111/pala.12013, 2013.

Schmidt, D. N., Thomas, E., Authier, E., Saunders, D., and Ridgwell, A.: Strategies in times of crisis – insights into the benthic foraminiferal record of the Palaeocene–Eocene Thermal Maximum, Philos. T. R. Soc. A., 376, 20170328, https://doi.org/10.1098/rsta.2017.0328, 2018.

Schmidtko, S., Stramma, L., and Visbeck, M.: Decline in global oceanic oxygen content during the past five decades, Nature, 542, 335–339, https://doi.org/10.1038/nature21399, 2017.

Schmiedl, G., Mitschele, A., Beck, S., Emeis, K. C., Hemleben, C., Schulz, H., Sperling, M., and Weldeab, S.: Benthic foraminiferal record of ecosystem variability in the eastern Mediterranean Sea during times of sapropel S5 and S6 deposition, Palaeo-geogr. Palaeocl., 190, 139–164, https://doi.org/10.1016/S0031-0182(02)00603-X, 2003.

Schmiedl, G. and Mackensen, A.: Multispecies stable isotopes of benthic foraminifers reveal past changes of organic matter decomposition and deepwater oxygenation in the Arabian Sea, Paleocean. Paleoclim., 21, PA4213, https://doi.org/10.1029/2006PA001284, 2006.

Schmittner, A., Gruber, N., Mix, A. C., Key, R. M., Tagliabue, A., and Westberry, T. K.: Biology and air-sea gas exchange controls on the distribution of carbon isotopes ratios in the ocean, Biogeosciences, 10, 5793–5816, https://doi.org/10.5194/bg-10-5793-2013, 2013.

Schmittner, A., Bostock, H. C., Cartapanis, O., Curry, W. B., Filipsson, H. L., Galbraith, E. D., Gottschalk, J., Herguera, J. C., Hoogakker, B., Jaccard, S. L., Lisiecki, L. E., Lund, D. C., Méndez, G. M., Stieglitz, J. L., Mackensen, A., Michel, E., Mix, A. C., Oppo, D. W., Peterson, C. D., Repschläger, J., Sikes, E. L., Spero, H. J., and Waelbroeck, C.: Calibration of the carbon isotope composition (δ¹³C) of benthic foraminifera, Paleocean. Paleoclim., 32, 512–530, https://doi.org/10.1002/2016PA003072, 2017.

Scholz, F., Hensen, C., Noffke, A., Rohde, A., Liebetrau, V., and Wallmann, K.: Early diagenesis of redox-sensitive trace metals in the Peru upwelling area – response to ENSO-related oxygen fluctuations in the water column, Geochim. Cosmochim. Ac., 75, 7257–7276, https://doi.org/10.1016/j.gca.2011.08.007, 2011.

Scholz, F., Siebert, C., Dale, A. W., and Frank, M.: Intense molybdenum accumulation in sediments underneath a nitrogenous water column and implications for the re-

construction of paleo-redox conditions based on molybdenum isotopes, Geochim. Cosmochim. Ac., 213, 400–417, https://doi.org/10.1016/j.gca.2017.06.048, 2017.

Schönfeld, J.: Benthic foraminifera and pore-water oxygen profiles: a re-assessment of species boundary conditions at the western Iberian margin, J. Foramin. Res., 31, 86–107, https://doi.org/10.2113/0310086, 2001.

Schönfeld, J.: History and development of methods in Recent benthic foraminiferal studies, J. Micropal., 31, 53–72, https://doi.org/10.1144/0262-821X11-008, 2012.

Schönfeld, J., Golikova, E., Korsun, S., and Spezzaferri, S.: The Helgoland Experiment – assessing the influence of methodologies on Recent benthic foraminiferal assemblage composition, J. Micropal., 32, 161–182, https://doi.org/10.1144/jmpaleo2012-022, 2013.

Schönfeld, F., Glock, N., Polovodova Asteman, I., Roy, A.-R., Warren, M., Weissenbach, J., and Wukovits, J.: Benthic foraminiferal patchiness – revisited, J. Micropal., 42, 171–192, https://doi.org/10.5194/jm-42-171-2023, 2013.

Schouten, S., Hopmans, E. C., and Sinninghe Damsté, J. S.: The organic geochemistry of glycerol dialkyl glycerol tetraether lipids: A review, Org. Geochem., 54, 19–61, https://doi.org/10.1016/j.orggeochem.2012.09.006, 2013a.

Schouten, S., Villareal, T. A., Hopmans, E. C., Mets, A., Swanson, K. M., and Sinninghe Damsté, J. S.: Endosymbiotic heterocystous cyanobacteria synthesize different heterocyst glycolipids than free-living heterocystous cyanobacteria, Phytochemistry, 85, 115–121, https://doi.org/10.1016/j.phytochem.2012.09.002, 2013b.

Schwark, L. and Frimmel, A.: Chemostratigraphy of the Posidonia Black Shale, SW-Germany II. Assessment of extent and persistence of photic-zone anoxia using aryl isoprenoid distributions, Chem. Geol., 206, 231–248, https://doi.org/10.1016/j.chemgeo.2003.12.008, 2004.

Schubert, C. J. and Calvert, S. E.: Nitrogen and carbon isotopic composition of marine and terrestrial organic matter in Arctic Ocean sediments: implications for nutrient utilization and organic matter composition, Deep-Sea Res. Pt. I., 48, 789–810, https://doi.org/10.1016/S0967-0637(00)00069-8, 2001.

Schumacher, S., Jorissen, F. J., Dissard, D., Larkin, K. E., and Gooday, A. J.: Live (Rose Bengal stained) and dead benthic foraminifera from the oxygen minimum zone of the Pakistan continental margin (Arabian Sea), Mar. Micropaleontol., 62, 45–73, https://doi.org/10.1016/j.marmicro.2006.07.004, 2007.

Schwartz-Narbonne, R., Schaeffer, P., Hopmans, E. C., Schenesse, M., Charlton, E. A., Jones, D. M., Sinninghe Damsté, J. S., Haque, M. F. U., Jetten, M. S. M., Lengger, S. K., Murrell, J. C., Normand, P., Nuijten, G. H. L., Talbot, H. M., and Rush, D.: A unique bacteriohopanetetrol stereoisomer of marine anammox, Org. Geochem., 143, 103994, https://doi.org/10.1016/j.orggeochem.2020.103994, 2020.

Scott, C. and Lyons, T. W.: Contrasting molybdenum cycling and isotopic properties in euxinic versus non-euxinic sediments and sedimentary rocks: REFining the paleoproxies, Chem. Geol., 324, 19–27, https://doi.org/10.1016/j.chemgeo.2012.05.012, 2012.

Sáenz, J. P., Waterbury, J. B., Eglinton, T. I., and Summons, R. E.: Hopanoids in marine cyanobacteria: probing their phyloge-
netic distribution and biological role, Gebiology, 10, 311–319,
https://doi.org/10.1111/j.1472-4669.2012.00318.x, 2012.

Sen Gupta, B. K. and Machain-Castillo, M. L.: Benthic foraminifera
in oxygen-poor habitats, Mar. Micropaleontol., 20, 183–201,
https://doi.org/10.1016/0377-8398(93)90032-S, 1993.

Sen Gupta, B. K., Platon, E., Bernhard, J. M., and Aharon, P.: Foraminiferal colonization of hydrocarbon-seep bacterial mats and underlying sediment, Gulf of Mexico slope, J. Foramin. Res., 27, 292–300, https://doi.org/10.2113/gsjfr.27.4.292, 1997.

Sen Gupta, B. K.: Systematics of modern Foraminifera BT – Mod-
ern Foraminifera, edited by: Sen Gupta, B. K., Springer Nether-
lands, Dordrecht, 7–36, https://doi.org/10.1007/0-306-48104-
9_2, 2003.

Seralathan, P. and Hartmann, M.: Molybdenum and vanadium in sediment cores from the NW-African continental margin and their relations to climatic and environmental conditions, Meteor Forschungsergebnisse: Reihe C, Geol. Geophys., 40, 1–17, 1986.

Service, R. F.: New dead zone off Oregon coast hints
at sea change in currents, Science, 305, 1099,
https://doi.org/10.1126/science.305.5687.1099, 2004.

Severmann, S., Lyons, T. W., Anbar, A., McManus, J., and Gordon,
G.: Modern iron isotope perspective on the benthic iron shuttle
and the redox evolution of ancient oceans, Geology, 36, 487–490,
https://doi.org/10.1130/G24670A.1, 2008.

Sharon, Belanger, C., Du, J., and Mix, A.: Reconstructing
paleo-oxygenation for the last 54,000 years in the Gulf of
Alaska using cross-validated benthic foraminiferal and geo-
chemical records, Paleocean. Paleoclim., 36, e2020PA003986,
https://doi.org/10.1029/2020PA003986, 2021.

Shatz, M., Yosief, T., and Kashman, Y.: Bacteriohopanehexol, a new triterpene from the marine sponge *Petrosia* species, J. Nat. Prod., 63, 1554–1556, https://doi.org/10.1021/np000190r, 2000.

Shaw, T. J., Gieskes, J. M., and Jahnke, R. A.: Early diagenesis in differing depositional environments: The response of transition metals in pore water, Geochim. Cosmochim. Ac., 54, 1233–1246, https://doi.org/10.1016/0016-7037(90)90149-F, 1990.

Shawar, L., Said-Ahmad, W., Ellis, G. S., and Amrani, A.: Sulfur Isotope composition of individual compounds in immature organic-rich rocks and possible geochemical implications, Geochim. Cosmochim. Ac., 274, 20–44, https://doi.org/10.1016/j.gca.2020.01.034, 2020.

Shawar, L., Grice, K., Holman, A. I., and Amrani, A.: Carbon and Sulfur Isotopic Composition of Alkyl- and Benzo-Thiophenes Provides Insights into Their Origins and Formation Pathways, Org. Geochem., 151, 104163, https://doi.org/10.1016/j.orggeochem.2020.104163, 2021.

Sherwood, O. A., Guilderson, T. P., Batista, F. C., Schiff, J. T., and McCarthy, M. D.: Increasing subtropical North Pacific Ocean nitrogen fixation since the Little Ice Age, Nature, 505, 78–81, https://doi.org/10.1038/nature12784, 2014.

Shiller, A. M. and Boyle, E. A.: Dissolved vanadium in rivers and estuaries, Earth Planet. Sc. Lett., 86, 214–224, https://doi.org/10.1016/0012-821X(87)90222-6, 1987.

Siccha, M., Trommer, G., Schulz, H., Hemleben, C., and Kucera, M.: Factors controlling the distribution of planktonic foraminifera in the Red Sea and implications for the development of transfer functions, Mar. Micropaleontol., 72, 146–156, https://doi.org/10.1016/j.marmicro.2009.04.002, 2009.

Siebert, C., Nägler, T. F., and Kramers, J. D.: Determination of molybdenum isotope fractionation by double-spike multicollector inductively coupled plasma mass spectrometry, Geochem. Geophy. Geosy., 2, 2000GC000124, https://doi.org/10.1029/2000GC000124, 2001

Sigman, D. M., Altabet, M. A., Francois, R., McCorkle, D. C., and Gaillard, J.-F.: The isotopic composition of diatom-bound nitrogen in Southern Ocean sediments, Paleocean. Paleoclim., 14, 118–134, https://doi.org/10.1029/1998PA900018, 1999.

Sigman, D. M., Casciotti, K. L., Andreani, M., Barford, C., Galanter, M., and Böhlke, J. K.: A Bacterial Method for the Nitrogen Isotopic Analysis of Nitrate in Sea-water and Freshwater, Anal. Chem., 73, 4145–4153, https://doi.org/10.1021/ac010088e, 2001.

Sigman, D. M., DiFiore, P. J., Hain, M. P., Deutsch, C., Wang, Y., Karl, D. M., Knapp, A. N., Lehmann, M. F., and Pantoja, S.: The dual isotopes of deep nitrate as a constraint on the cycle and budget of oceanic fixed nitrogen, Deep-Sea Res. Pt. I, 56, 1419–1439, https://doi.org/10.1016/j.dsr.2009.04.007, 2009a.

Sigman, D. M., Karsh, K. L., and Casciotti, K. L.: Ocean process tracers: Nitrogen isotopes in the ocean, in: Encyclopedia of Ocean Sciences, edited by: Steele, J. H., Academic Press, Cambridge, Massachusetts, USA, 4138–4153, https://doi.org/10.1006/rwos.2001.0172, 2009b.

Sigman, D. M. and Fripiat, F.: Nitrogen Isotopes in the Ocean, in: Encyclopedia of Ocean Sciences, Elsevier, 263–278, https://doi.org/10.1016/B978-0-12-409548-9.11605-7, 2019.

Singh, A. D., Das, S., and Verma, K.: Impact of climate induced hypoxia on calcifying biota in the Arabian Sea: an evaluation from the micropaleontological records of the Indian margin, Mausam, 62, 647e652, https://doi.org/10.54302/mausam.v62i4.388, 2011.

Singh, A. D., Singh, H., Tripathi, S., and Singh, P.: Evolution and dynamics of the Arabian Sea oxygen minimum zone: Understanding the paradoxes, Evolv, Earth, 1, 100028, https://doi.org/10.1016/j.eve.2023.100028, 2023.

Sinninghe Damsté, J. S., Rijpstra, W. I. C., de Leeuw, J., and Schenck, P. A.: Origin of organic sulphur compounds and sulphur-containing high molecular weight substances in sediments and immature crude oils, Org. Geochem., 13, 593–606, https://doi.org/10.1016/0146-6380(88)90079-4, 1988.

Sinninghe Damsté, J. S., Strous, M., Rijpstra, W. I. C., Hopmans, E. C., Geenevasen, J. A. J., Duin, A. C. T. van, Niftrik, L. A., and vanJetten, M. S. M.: Linearly concatenated cyclobutane lipids form a dense bacterial membrane, Nature, 419, 708–712, https://doi.org/10.1038/nature01128, 2002a.

Sinninghe Damsté, J. S., Schouten, S., Hopmans, E. C., van Duin, A. C. T., and Geenevasen, J. A. J.: Crenarchaeol: the characteristic core glycerol dibiphytanyl glycerol tetraether membrane lipid of cosmopolitan pelagic crenarchaeota, J. Lipid Res., 43, 1641–1651, https://doi.org/10.1194/jlr.m200148-jlr200, 2002b.

Sinninghe Damsté, J. S., Rijpstra, W. I. C., and Reichart, G. J.: The influence of oxic degradation on the sedimentary biomarker record II. Evidence from Arabian Sea sediments, Geochim. Cosmochim. Ac., 66, 2737–2754, https://doi.org/10.1016/S0016-7037(02)00865-7, 2002c.

Sinninghe Damsté, J. S., Kuypers, M. M. M., Schouten, S., Schulte, S., and Rullkötter, J.: The lycopene / C₃₁ n-alkane ratio as a proxy to assess palaeoxicity during sediment deposition, Earth
Planet. Sc. Lett., 209, 215–226, https://doi.org/10.1016/S0012-821X(03)00066-9, 2003.

Skinner, L. C., Sadekov, A., Brandon, M., Greaves, M., Plancherel, Y., de La Fuente, M., Gottschalk, J., Souanef-Ureta, S., Sevilgen, D. S., and Scrivner, A. E.: Rare Earth Elements in early-diagenetic foraminifer ‘coatings’: Pore-water controls and potential palaeoceanographic applications, Geochim. Cosmochim. Ac., 245, 118–132, https://doi.org/10.1016/j.gca.2018.10.027, 2019.

Sliter, W. V.: Test ultrastructure of some living benthic foraminifers, Lethaia, 7, 5–16, https://doi.org/10.1111/j.1502-3931.1974.tb00880.x, 1974.

Smart, C. W., King, S. C., Gooday, A. J., Murray, J. W., and Thomas, E.: A benthic foraminiferal proxy of pulsed organic matter paleofluxes, Mar. Micropaleontol., 23, 89–99, https://doi.org/10.1016/0377-8398(94)90002-7, 1994.

Smith, P. B.: Ecology of benthonic species, Geol. Surv. Prof. Paper, 429, 1–48, https://doi.org/10.3133/pp429B, 1964.

Smit, N. T., Rush, D., Sahonero-Canavesi, D. X., Verweij, M., Rasigraf, O., Cruz, S. G., Jetten, M. S. M., Sinninghe Damsté, J. S., and Schouten, S.: Demethylated hopanoids in “Ca. Methylomirabilis oxyfera” as biomarkers for environmental nitrite-dependent methane oxidation, Org. Geochem., 137, 103899, https://doi.org/10.1016/j.orggeochem.2019.07.008, 2019.

Sollai, M., Hopmans, E. C., Schouten, S., Keil, R. G., and Sinninghe Damsté, J. S.: Intact polar lipids of Thaumarchaeota and anamox bacteria as indicators of N cycling in the eastern tropical North Pacific oxygen-deficient zone, Biogeosciences, 12, 4725–4737, https://doi.org/10.5194/bg-12-4725-2015, 2015.

Speijer, R. P., Van Loo, D., Masschaele, B., Vlassenbroeck, J., Cnudde, V., and Jacobs P.: Quantifying foraminiferal growth with high-resolution X-ray computed tomography: New opportunities in foraminiferal ontogeny, phylogeny, and paleoceanographic applications, Geosphere, 4, 760–763, https://doi.org/10.1130/GES00176.1, 2008.

Sperling, E. A., Frieder, C. A., Raman, A. V., Girguis, P. R., Levin, L. A., and Knoll, A. H.: Oxygen, ecology, and the Cambrian radiation of animals, P. Natl. Acad. Sci., 110, 13446–13451, https://doi.org/10.1073/pnas.1312778110, 2013.

Sperling, E. A., Knoll, A. H., and Girguis, P. R.: The ecological physiology of Earth’s second oxygen revolution, Ann. Rev. Ecol. Evol. Syst., 46, 215–235, https://doi.org/10.1146/annurev-ecolsys-110512-135808, 2015.

Sperling, E. A., Boag, T. H., Duncan, M. I., Endriga, C. R., Marquez, J. A., Mills, D. B., Monarrez, P. M., Sclafani, J. A., Stockey, R. G., and Payne, J. L.: Breathless through time: oxygen and animals across Earth’s history, Biol. Bull., 243, 184–206, https://doi.org/10.1086/721754, 2022.

Stal, L. J.: Is the distribution of nitrogen-fixing cyanobacteria in the oceans related to temperature?, Environ. Microbiol., 11, 1632–1645, https://doi.org/10.1111/j.1758-2229.2009.00016.x, 2009.

Stassen, P., Thomas, E., and Speijer, R. P.: Paleocene–Eocene Thermal Maximum environmental change in the New Jersey Coastal Plain: benthic foraminiferal biotic events, Mar. Micropal., 115, 1–23, https://doi.org/10.1016/j.marmicro.2014.12.001, 2015.

Steen, A. D., Kusch, S., Abdulla, H. A., Cakić, N., Coffinet, S., Dittmar, T., Fulton, J. M., Galy, V., Hinrichs, K. -U., Ingalls, A. E., Koch, B. P., Kujawinski, E., Liu, Z., Osterholz, H., Rush, D., Seidel, M., Sepúlveda, J., and Wakeham, S. G.: Analytical and

computational advances, opportunities, and challenges in marine organic biogeochemistry in an era of “omics.”, Front. Mar. Sci., 7, 3815, https://doi.org/10.3389/fmars.2020.00718, 2020.

Steinhardt, J., Cléroux, C., Ullgren, J., de Nooijer, L., Durgadoo, J. V., Brummer, G. J., and Reichart, G. J.: Anti-cyclonic eddy imprint on calcite geochemistry of several planktonic foraminiferal species in the Mozambique Channel, Mar. Micropaleontol., 113, 20–33, https://doi.org/10.1016/j.marmicro.2014.09.001, 2014.

Stirling, C. H., Andersen, M. B., Warthmann, R., and Halliday, A. N.: Isotope fractionation of $^{238}$U and $^{235}$U during biologically-mediated uranium reduction, Geochim. Cosmochim. Ac., 163, 200–218, https://doi.org/10.1016/j.gca.2015.03.017, 2015.

St-Onge, G., Mulder, T., Francus, P., and Long, B.: Chapter two continuous physical properties of cored marine sediments, Dev. Mar. Geol., 1, 63–98, https://doi.org/10.1016/S1572-5480(07)01007-X, 2007.

Stramma, L., Johnson, G. C., Sprintall, J., and Mohrholz, V.: Expanding Oxygen-Minimum Zones in the Tropical Oceans, Science, 320, 655–658, https://doi.org/10.1126/science.1153847, 2008.

Stramma, L., Schmidtko, S., Levin, L. A., and Johnson, G. C.: Ocean oxygen minima expansions and their biological impacts, Deep-Sea Res. Pt. I, 57, 587–595, https://doi.org/10.1016/J.DSR.2010.01.005, 2010.

Studer, A. S., Martinez-Garcia, A., Jaccard, S. L., Girault, F. E., Sigman, D. M., and Haug, G. H.: Enhanced stratification and seasonality in the Subarctic Pacific upon Northern Hemisphere Glaciation–New evidence from diatom-bound nitrogen isotopes, alkenones and archaeal tetraethers, Earth Planet. Sc. Lett., 351/352, 84–94, https://doi.org/10.1016/j.epsl.2012.07.029, 2012.

Studer, A. S., Ellis, K. K., Oleynik, S., Sigman, D. M., and Haug, G. H.: Size-specific opal-bound nitrogen isotope measurements in North Pacific sediments, Geochim. Cosmochim. Ac., 120, 179–194, https://doi.org/10.1016/j.gca.2013.06.041, 2013.

Studer, A. S., Sigman, D. M., Martínez-García, A., Benz, V., Winckler, G., Kuhn, G., Esper, O., Lamy, F., Jaccard, S. L., Wacker, L., Oleynik, S., Gersonde, R., and Haug, G. H.: Antarctic Zone nutrient conditions during the last two glacial cycles: Antarctic zone nutrient conditions, Paleocean. Paleoclim., 30, 845–862, https://doi.org/10.1002/2014PA002745, 2015.

Studer, A. S., Mekik, F., Ren, H., Hain, M. P., Oleynik, S., Martínez-García, A., Haug, G. H., and Sigman, D. M.: Ice Age-Holocene Similarity of Foraminifera-Bound Nitrogen Isotope Ratios in the Eastern Equatorial Pacific, Paleooceanogr. Paleocl., 36, e2020PA004063, https://doi.org/10.1029/2020PA004063, 2021.

Summons, R. E. and Powell, T. G.: Identification of aryl isoprenoids in source rocksand crude oils: biological markers for the green sulphur bacteria, Geochim. Cosmochim. Ac., 51, 557–566, https://doi.org/10.1016/0016-7037(87)90069-X, 1987.

Sun, X., Kop, L. F. M., Lau, M. C. Y., Frank, J., Jayakumar, A., Lücker, S., and Ward, B. B.: Uncultured *Nitrospina*-like species are major nitrite oxidizing bacteria in oxygen minimum zones, ISME J., 13, 2391–2402, https://doi.org/10.1038/s41396-019-0443-7, 2019.

Sundby, B. and Silverberg, N.: Manganese fluxes in the benthic boundary layer 1, Limnol. Oceanogr., 30, 372–381, https://doi.org/10.4319/lo.1985.30.2.0372, 1985.
Sundby, B., Martinez, P., and Gobeil, C.: Comparative geochemistry of cadmium, rhenium, uranium, and molybdenum in continental margin sediments, Geochim. Cosmochim. Ac., 68, 2485–2493, https://doi.org/10.1016/j.gca.2003.08.011, 2004.

Suokhrie, T., Saraswat, R., and Nigam, R.: Lack of denitrification causes a difference in benthic foraminifera living in the oxygen deficient zones of the Bay of Bengal and the Arabian Sea, Mar. Pollut. Bull., 153, 110992, https://doi.org/10.1016/j.marpolbul.2020.110992, 2020.

Sweere, T., van den Boorn, S., Dickson, A. J., and Reichart, G.-J.: Definition of new trace-metal proxies for the controls on organic matter enrichment in marine sediments based on Mn, Co, Mo and Cd concentrations, Chem. Geol., 441, 235–245, 2016.

Sweere, T., Hennekam, R., Vance, D., and Reichart, G.-J.: Molybdenum isotope constraints on the temporal development of sulfidic conditions during Mediterranean sapropel intervals, Geochem. Perspect., 17, 16–20, https://doi.org/10.7185/geochemlet.2108, 2021.

Szymczak-Żyla, M., Kowalewska, G., and Louda, J. W.: The influence of microorganisms on chlorophyll *a* degradation in the marine environment, Limnol. Oceanogr., 53, 851–862, https://doi.org/10.4319/lo.2008.53.2.0851, 2008.

Szymczak-Żyla, M., Krajewska, M., Winogradow, A., Zaborska, A., Breedveld, G. D., and Kowalewska, G.: Tracking trends in eutrophication based on pigments in recent coastal sediments, Oceanologia, 59, 1–17, https://doi.org/10.1016/j.oceano.2016.08.003, 2017.

Takano, Y., Illyina, T., Tiputra, T., Eddebbar, Y. A., Berthet, S., Bopp, L., Buitenhuis, E., Butenschön, M., Christan, J. R., Dunne, J. P., Gröger, M., Hayashida, H., Hieronymus, J., Koenig, T., Krasting, J., Long, M. C., Lovato, T., Nakano, H., Palmieri, J., Schwinger, J., Séférrian, R., Suntharalingam, P., Tatebe, H., Tsujino, H., Urawaka, S., Watanabe, M., and Yool, A.: Simulations of ocean deoxygenation in the historical era: insights from forced and coupled models, Front. Mar. Sci., 10, 1139917, https://doi.org/10.3389/fmars.2023.1139917, 2023.

Talbot, H. M., Watson, D. F., Murrell, J. C., Carter, J. F., and Farrimond, P.: Analysis of intact bacteriohopanepolyols from methanotrophic bacteria by reversed-phase high-performance liquid chromatography-atmospheric pressure chemical ionisation mass spectrometry, J. Chromatogr. A, 921, 175–185, https://doi.org/10.1016/S0021-9673(01)00871-8, 2001.

Talbot, H. M., Summons, R. E., Jahnke, L. L., Cockell, C. S., Rohmer, M., and Farrimond, P.: Cyanobacterial bacteriohopanepolyol signatures from cultures and natural environmental settings, Org. Geochem., 39, 232–263, https://doi.org/10.1016/j.orggeochem.2007.08.006, 2008.

Talbot, H. M., Bischoff, J., Inglis, G. N., Collinson, M. E., and Pancost, R. D.: Polyfunctionalised bio- and geohopanoids in the Eocene Cobham Lignite, Org. Geochem., 96, 77–92, https://doi.org/10.1016/j.orggeochem.2016.03.006, 2016.

Tanaka, A., Nakano, T., and Ikehara, K.: X-ray computerized tomography analysis and density estimation using a sediment core from the Challenger Mound area in the Porcupine Seabight, off Western Ireland, Earth Planet. Space, 63, 103–110, https://doi.org/10.5047/eps.2010.12.006, 2011.

Tarhan, L. G., Droser, M. L., Planavsky, N. J., and Johnston, D. T.: Protracted development of bioturbation through

the early Palaeozoic Era, Nat. Geosci., 8, 865–869, https://doi.org/10.1038/ngeo2537, 2015.

Tavera Martínez, L., Marchant, M., Muñoz, P., and Abdala Díaz, R. T.: Spatial and Vertical Benthic Foraminifera Diversity in the Oxygen Minimum Zone of Mejilones Bay, Northern Chile, Front. Mar. Sci., 9, 357, https://doi.org/10.3389/fmars.2022.821564, 2022.

Tebo, B. M., Bargar, J. R., Clement, B., Dick, G., Murray, K. J., Parker, D., Verity, R., and Webb, S. M.: Biogenic manganese oxides: properties and mechanisms of formation, Annu. Rev. Earth Pl. Sc., 32, 287–328, https://doi.org/10.1146/annurev.earth.32.101802.120213, 2004.

Ten Haven, H. L., de Leeuw, J. W., Rullkötter, J., and Sinninghe Damsté J. S.: Restricted utility of the pristane / phytane ratio as a palaeoenvironmental indicator, Nature, 330, 641–643, https://doi.org/10.1038/330641a0, 1987.

Tesdal, J.-E., Galbraith, E. D., and Kienast, M.: Nitrogen isotopes in bulk marine sediment: linking seafloor observations with subseafloor records, Biogeosciences, 10, 101–118, https://doi.org/10.5194 bg-10-101-2013, 2013.

Teske, A., Wawer, C., Muyzer, G., and Ramsing, N.B.: Distribution of sulfate-reducing bacteria in a stratified fjord (Mariager Fjord, Denmark) as evaluated by most-probable-number counts and denaturing gradient gel electrophoresis of PCR-amplified ribosomal DNA fragments, Appl. Environ. Microb., 62, 1405–1415, https://doi.org/10.1128/aem.62.4.1405-1415.1996, 1996.

Tessin, A., Chappaz, A., Hendy, I., and Sheldon, N.: Molybdenum speciation as a paleo-redox proxy: A case study from Late Cretaceous Western Interior Seaway black shales, Geology, 47, 59–62, https://doi.org/10.1130/g45785.1, 2018.

Tetard, M., Licari, L., and Beaufort, L.: Oxygen history off Baja California over the last 80 kyr: A new foraminiferal-based record, Paleocean. Paleoclim., 32, 246–264, https://doi.org/10.1002/2016PA003034, 2017.

Tetard, M., Licari, L., Ovsepyan, E., Tachikawa, K., and Beaufort, L.: Toward a global calibration for quantifying past oxygenation in oxygen minimum zones using benthic Foraminifera, Biogeosciences, 18, 2827–2841, https://doi.org/10.5194/bg-18-2827-2021, 2021a.

Tetard, M., Ovsepyan, E., and Licari, L.: *Eubuliminella Tenuata* as a New Proxy for Quantifying Past Bottom Water Oxygenation, Mar. Micropaleontol., 166, 102016, https://doi.org/10.1016/j.marmicro.2021.102016, 2021b.

Tetard, M., Prebble, J., and Cortese, G.: Dissolved oxygen affinities of hundreds of benthic foraminiferal species, Mar. Micropaleontol., 190, 102380, https://doi.org/10.1016/j.marmicro.2024.102380, 2024.

Thamdrup, B.: New pathways and processes in the global nitrogen cycle, Annu. Rev. Ecol. Evol. S., 43, 407–428, https://doi.org/10.1146/annurev-ecolsys-102710-145048, 2012.

Thamdrup, B., Fossing, H., and Jørgensen, B. B.: Manganese, iron and sulfur cycling in a coastal marine sediment, Aarhus Bay, Denmark, Geochim. Cosmochim. Ac., 58, 5115–5129, https://doi.org/10.1016/0016-7037(94)90298-4, 1994a.

Thamdrup, B., Glud, R. N., and Hansen, J. W.: Manganese oxidation and in situ manganese fluxes from a coastal sediment, Geochim. Cosmochim. Ac., 58, 2563–2570, https://doi.org/10.1016/0016-7037(94)90032-9, 1994b.
Thamdrup, B., Dalsgaard, T., and Revsbech N. P.: Widespread functional anoxia in the oxygen minimum zone of the Eastern South Pacific, Deep-Sea Res., Pt. I, 65, 36–45, https://doi.org/10.1016/j.dsr.2012.03.001, 2012.

Thiel, V., Peckmann, J., Seifert, R., Wehrung, P., Reitner, J., and Michaelis, W.: Highly isotopically depleted isoprenoids: Molecular markers for ancient methane venting, Geochim. Cosmochim. Ac., 63, 3959–3966, https://doi.org/10.1016/S0016-7037(99)00177-5, 1999.

Thomas, N. C., Bradbury, H. J., and Hodell, D. A.: Changes in North Atlantic deep-water oxygenation across the Middle Pleistocene Transition, Science, 377, 654–659, https://doi.org/10.1126/science.abj7761, 2022.

Thomson, J., Brown, L., Nixon, S., Cook, G. T., and MacKenzie, A. B.: Bioturbation and Holocene sediment accumulation fluxes in the north-east Atlantic Ocean (Benthic Boundary Layer experiment sites), Mar. Geol., 169, 21–39, https://doi.org/10.1016/S0025-3227(00)00077-3, 2000.

Tian, C. and Wang, L.: Stable isotope variations of daily precipitation from 2014–2018 in the central United States, Sci. Data, 6, 190018, https://doi.org/10.1038/sdata.2019.18, 2019.

Tissot, F. L. H., Chen, S., Go, B. M., Naziemiec, M., Healy, G., Bekker, A., Swart, P. K., and Dauphas, N.: Controls of eustacy and diagenesis on the ²³⁸U / ²³⁵U of carbonates and evolution of the seawater during the last 1.4 Myr, Geochim. Cosmoch. Ac., 242, 233–265, https://doi.org/10.1016/j.gca.2018.08.022, 2018.

Titelboim D., Lord O. T., and Schmidt D. N.: Thermal Stress Reduces Carbonate Production of Benthic Foraminifera and Changes the Material Properties of Their Shells, ICES J. Mar. Sci., 78, 3202–3211, https://doi.org/10.1093/icesjms/fsab186, 2021.

Tjallingii, R., Röhl, U., Kölling, M., and Bickert, T.: Influence of the water content on X-ray fluorescence core-scanning measurements in soft marine sediments, Geochem. Geophy. Geosy., 8, Q02004, https://doi.org/10.1029/2006GC001393, 2007.

Todd C. L., Schmidt D. N., Robinson M. M., and De Schepper S.: Planktic Foraminiferal Test Size and Weight Response to the Late Pliocene Environment, Paleocean. Paleoclim., 35, e2019PA003738, https://doi.org/10.1029/2019PA003738, 2020.

Tossell, J.: Calculating the partitioning of the isotopes of Mo between oxidic and sulfidic species in aqueous solution, Geochim. Cosmochim. Ac., 69, 2981–2993, https://doi.org/10.1016/j.gca.2005.01.016, 2005.

Tribovillard, N., Algeo, T. J., Lyons, T., and Riboulleau, A.: Trace metals as paleoredx and paleoproduction proxies: An update, Chem. Geol., 232, 12–32, https://doi.org/10.1016/j.chemgeo.2006.02.012, 2006.

Tribovillard, N., Algeo, T. J., Baudin, F., and Riboulleau, A.: Analysis of marine environmental conditions based on molybdenum–uranium covariation – Applications to Mesozoic paleoceanography, Chem. Geol., 324/325, 46–58, https://doi.org/10.1016/j.chemgeo.2011.09.009, 2012.

Tromp, T. K., Van Cappellen, P., and Key, R. M.: A global model for the early diagenesis of organic carbon and organic phosphorus in marine sediments, Geochim. Cosmochim. Ac., 59, 1259–1284, https://doi.org/10.1016/0016-7037(95)00042-X, 1995.

Truesdale, V. W. and Bailey, G. W.: Dissolved iodate and total iodine during an extreme hypoxic event in the South-

ern Benguela system, Estuar. Coast. Shelf S., 50, 751–760, https://doi.org/10.1006/ecss.2000.0609, 2000.

Trust, B. A. and Fry, B.: Stable sulphur isotopes in plants: A review, Plant Cell Environ., 15, 1105–1110, https://doi.org/10.1111/j.1365-3040.1992.tb01661.x, 1992.

Tyson, R. V.: Sedimentation rate, dilution, preservation and total organic carbon: some results of a modelling study, Org. Geochem., 32, 333–339, https://doi.org/10.1016/S0146-6380(00)00161-3, 2001.

Umling, N. E. and Thunell, R. C.: Mid-depth respired carbon storage and oxygenation of the eastern equatorial Pacific over the last 25,000 years, Quaternary Sci. Rev., 189, 43–56, https://doi.org/10.1016/j.quascirev.2018.04.002, 2018.

Vairavamurthy, A., Mopper, K., and Taylor, B. F.: Occurrence of particle-bound polysulfides and significance of their reaction with organic matters in marine sediments, Geophys. Res. Lett., 19, 2043–2046, https://doi.org/10.1029/92GL01995, 1992.

Vairavamurthy, A.: Using X-Ray Absorption to Probe Sulfur Oxidation States in Complex Molecules, Spectrochim. Ac. A, 54, 2009–2017, https://doi.org/10.1016/S1386-1425(98)00153-X, 1998.

Valdés, J. and Tapia, J.: Spatial monitoring of metals and As in coastal sediments of northern Chile: An evaluation of background values for the analysis of local environmental conditions, Mar. Pollut. Bull., 145, 624–640, https://doi.org/10.1016/j.marpolbul.2019.06.036, 2019.

Valdés, J., Sifeddine, A., Boussafir, M., and Ortlieb, L.: Redox conditions in a coastal zone of the Humboldt system (Mejillones, 23° S). Influence on the preservation of redox-sensitive metals, J. Geochem. Explor., 140, 1–10, https://doi.org/10.1016/j.gexplo.2014.01.002, 2014.

Valdés, J., Sifeddine, A., Guiñez, M., and Castillo, A.: Oxygen minimum zone variability during the last 700 years in a coastal upwelling area of the Humboldt system (Mejillones, 23° S, Chile). A new approach from geochemical signature, Prog. Oceanogr., 193, 102520, https://doi.org/10.1016/j-pocean.2021.102520, 2021.

Valdés, J., Ortlieb, L., Sifeddine, A., and Castillo, A.: Human-induced metals accumulation in sediments of an industrialized bay of northern Chile. An enrichment and ecological risk assessment based on preindustrial values, Mar. Pollut. Bull., 189, 114723, https://doi.org/10.1016/j.marpolbul.2023.114723, 2023.

Van De Velde, S., Mills, B. J., Meysman, F. J., Lenton, T. M., and Poulton, S. W.: Early Palaeozoic ocean anoxia and global warming driven by the evolution of shallow burrowing, Nat. Commun., 9, 2554, https://doi.org/10.1038/s41467-018-04973-4, 2018.

Van der Weijden, C. H.: Pitfalls of normalization of marine geochemical data using a common divisor, Mar. Geol., 184, 167–187, https://doi.org/10.1016/S0025-3227(01)00297-3, 2002.

Van der Zwaan, G. J., Duijnstee, A. I., Den Dulk, M., Ernst, S. R., Jannink, N. T., and Kouwenhoven, T. J.: Benthic foraminifers: proxies or problems?: a review of paleocological concepts, Earth Sci. Rev., 46, 213–236, https://doi.org/10.1016/S0012-8252(99)00011-2, 1999.

Van Dijk, I., Mouret, A., Cotte, M., Le Houedec, S., Oron, S., Reichart, G. J., Reyes-Herrera, J., Filipsson, H. L. and Barjas, C.: Chemical heterogeneity of Mg, Mn, Na, S, and Sr in benthic foraminiferal calcite, Front. Earth Sci., 7, 281, https://doi.org/10.3389/feart.2019.00281, 2019.
Van Dijk, I., De Nooijer, L. J., Barras, C., and Reichart, G. J.: Mn In-
corporation in Large Benthic Foraminifera: Differences Between
Species and the Impact of pCO₂ Front. Earth Sci., 8, 567701,
https://doi.org/10.3389/feart.2020.567701, 2020.

van Dongen, B. E., Talbot, H. M., Schouten, S., Pearson, P. N., and Pancost, R. D.: Well preserved Palaeogene and Cretaceous biomarkers from the Kilwa area, Tanzania, Org. Geochem., 37, 539–557, https://doi.org/10.1016/j.orggeochem.2006.01.003, 2006.

van Dongen, B. E., Schouten, S., and Sinninghe Damsté, J. S.: Preservation of carbohydrates through sulfurization in a Jurasic euxinic shelf sea: Examination of the Blackstone Band TOC cycle in the Kimmeridge Clay Formation, UK, Org. Geochem., 37, 1052–73, https://doi.org/10.1016/j.orggeochem.2006.05.007, 2006.

Van Kaam-Peters, H. M. E., Schouten, S., Köster, J., and Sinninghe Damstè, J. S.: Controls on the molecular and carbon isotopic composition of organic matter deposited in a Kimmeridigian euxinic shelf sea: evidence for preservation of carbohydrates through sulfurisation, Geochim. Cosmochim. Ac., 62, 3259–83, https://doi.org/10.1016/S0016-7037(98)00231-2, 1998.

van Kemenade, Z. R., Villanueva, L., Hopmans, E. C., Kraal, P., Witte, H. J., Sinninghe Damsté, J. S., and Rush, D.: Bacteriohopanpetetrol-x: constraining its application as a lipid biomarker for marine anammox using the water column oxygen gradient of the Benguela upwelling system, Biogeosciences, 19, 201–221, https://doi.org/10.5194/bg-19-201-2022, 2022.

van Meer, G., Voelker, D. R., and Feigenson, G. W.: Membrane lipids: where they are and how they behave, Nat. Rev. Mol. Cell Biol., 9, 112–124, https://doi.org/10.1038/nrm2330, 2008.

Van Vliet, D. M., Meijenfeldt, F. A. B., Dutilh, B. E., Villanueva, L., Sinninghe Damsté, J. S., Stams, A. J. M., and Sánchez-Andrea, I.: The bacterial sulfur cycle in expanding dysoxic and euxinic marine waters, Environ. Microbiol., 23, 2834–2857, https://doi.org/10.1111/1462-2920.15265, 2021.

Vaquer-Sunyer, R. and Duarte, C.M.: Thresholds of hypoxia for marine biodiversity, P. Natl. Acad. Sci. USA, 105, 15452–15457, https://doi.org/10.1073/pnas.0803833105, 2008.

Vedamati, J., Chan, C., and Moffett, J. W.: Distribution of dissolved manganese in the Peruvian Upwelling and Oxygen Minimum Zone, Geochim. Cosmochim. Ac., 156, 222–240, https://doi.org/10.1016/j.gca.2014.10.026, 2015.

Vickerman, K: The diversity and ecological significance of Protozoa, Biodivers. Conserv., 1, 334–341, https://doi.org/10.1007/BF00693769, 1992.

Volz, J. B., Liu, B., Köster, M., Henkel, S., Koschinsky, A., and Kasten, S.: Post-depositional manganese mobilization during the last glacial period in sediments of the eastern Clarion-Clipperton Zone, Pacific Ocean, Earth Planet. Sci. Lett., 532, 116012, https://doi.org/10.1016/j.epsl.2019.116012, 2020.

Vorlicek, T. P., Chappaz, A., Groskreutz, L. M., Young, N., and Lyons, T. W.: A new analytical approach to determining Mo and Re speciation in sulfidic waters, Chem. Geol., 403, 52–57, https://doi.org/10.1016/j.chemgeo.2015.03.003, 2015.

Wagner, C. L., Stassen, P., Thomas, E., Lippert, P. C., and Lascu, I.: Magnetofossils and benthic foraminifera record changes in food supply and deoxygenation of the coastal marine seafloor during the paleocene-eocene thermal maximum, Paleocean. Paleoclim.,

37, e2022PA004502, https://doi.org/10.1029/2022PA004502, 2022.

Wakeham, S. G., Freeman, K. H., Pease, T. K., and Hayes, J. M.: A photoautotrophic source for lycopane in marine water columns, Geochim. Cosmochim. Ac., 57, 159–165, https://doi.org/10.1016/0016-7037(93)09476-d, 1993.

Wakeham, S. G., Sinninghe Damsté, J. S., Kohnen, M. E. L., and De Leeuw, J. W.: Organic sulfur compounds formed during early diagenesis in Black Sea sediments, Geochim. Cosmochim. Ac., 59, 521–33, https://doi.org/10.1016/0016-7037(94)00361-O, 1995.

Wakeham, S. G., Lee, C., Hedges, J. I., Hermes, P. J., and Pe-
terson, M. J.: Molecular indicators of diagenetic status in ma-
rine organic matter, Geochim. Cosmochim. Ac., 61, 5363–5369,
https://doi.org/10.1016/S0016-7037(97)00312-8, 1997.

Wakeham, S. G., Amann, R., Freeman, K. H., Hopmans, E. C., Jør-
gensen, B. B., Putnam, I. F., Schouten, S., Sinninghe Damsté,
J. S., Talbot, H. M., and Woebken, D.: Microbial ecology of
the stratified water column of the Black Sea as revealed by a
comprehensive biomarker study, Org. Geochem., 38, 2070–2097,
https://doi.org/10.1016/j.orggeochem.2007.08.003, 2007.

Wakeham, S. G.: Organic biogeochemistry in the oxygen-
deficient ocean: A review, Org. Geochem., 149, 104096,
https://doi.org/10.1016/j.orggeochem.2020.104096, 2020.

Wang, X. T., Prokopenko, M. G., Sigman, D. M., Adkins, J. F., Robinson, L. F., Ren, H., Oleynik, S., Williams, B., and Haug, G. H.: Isotopic composition of carbonate-bound organic nitrogen in deep-sea scleractinian corals: A new window into past biogeochemical change, Earth Planet. Sci. Lett., 400, 243–250, https://doi.org/10.1016/j.epsl.2014.05.048, 2014.

Wang, X. T., Sigman, D. M., Cohen, A. L., Sinclair, D. J., Sherrell, R. M., Weigand, M. A., Erler, D. V., and Ren, H.: Isotopic composition of skeleton-bound organic nitrogen in reef-building symbiotic corals: A new method and proxy evaluation at Bermuda, Geochim. Cosmochim. Ac., 148, 179–190, https://doi.org/10.1016/j.gca.2014.09.017, 2015.

Wang, X., Planavsky, N. J., Reinhard, C. T., Hein, J. R., and Johnson, T. M.: A Cenozoic seawater redox record derived from $^{238}$U/$^{235}$U in ferromanganese crusts, Am. J. Sci., 316, 64–83, https://doi.org/10.2475/01.2016.02, 2016a.

Wang, X. T., Sigman, D. M., Cohen, A. L., Sinclair, D. J., Sherrell, R. M., Cobb, K. M., Erler, D. V., Stolarski, J., Kihahara, M. V., and Ren, H.: Influence of open ocean nitrogen supply on the skeletal $\delta^{15}$N of modern shallow-water scleractinian corals, Earth Planet. Sci. Lett., 441, 125–132, https://doi.org/10.1016/j.epsl.2016.02.032, 2016b.

Wang, Y., Hendy, I. L., Latimer, J. C., and Bilardello, D.: Diagenesis and iron paleo-redox proxies: New perspectives from magnetic and iron speciation analyses in the Santa Barbara Basin, Chem. Geol., 519, 95–109, https://doi.org/10.1016/j.chemgeo.2019.04.018, 2019a.

Wang, W.-L., Moore, J. K., Martiny, A. C., and Primeau, F. W.: Convergent estimates of marine nitrogen fixation, Nature, 566, 205–211, https://doi.org/10.1038/s41586-019-0911-2, 2019b.

Wang, Y., Lu, W., Costa, K. M., and Nielsen, S. G.: Beyond anoxia: Exploring sedimentary thallium isotopes in paleo-redox reconstructions from a new core top collection, Geochim. Cosmochim. Ac., 333, 347–361, https://doi.org/10.1016/j.gca.2022.07.022, 2022a.
Wang, X. T., Wang, Y., Auderset, A., Sigman, D. M., Ren, H., Martínez-García, A., Haug, G. H., Su, Z., Zhang, Y. G., Rasmussen, B., Sessions, A. L., and Fischer, W. W.: Oceanic nutrient rise and the late Miocene inception of Pacific oxygen-deficient zones, P. Natl. Acad. Sci., 119, e2204986119, https://doi.org/10.1073/pnas.2204986119, 2022b.

Wang, X., Algeo, T. J., Li, C., and Zhu, M.: Spatial pattern of marine oxygenation set by tectonic and ecological drivers over the Phanerozoic, Nat. Geol., 16, 1020–1026, https://doi.org/10.1038/s41561-023-01296-y, 2023.

Wang, Y., Costa, K. M., Lu, W., Hines, S. K., and Nielsen, S. G.: Global oceanic oxygenation controlled by the Southern Ocean through the last deglaciation, Sci. Adv., 10, eadk2506, https://doi.org/10.1126/sciadv.adk2506, 2024.

Wanty, R. B. and Goldhaber, M. B.: Thermodynamics and Kinetics of Reactions Involving Vanadium in Natural Systems: Accumulation of Vanadium in Sedimentary Rocks, Geochim. Cosmochim. Ac., 56, 1471–1483, https://doi.org/10.1016/0016-7037(92)90217-7, 1992.

Ward, B. B., Tuit, C. B., Jayakumar, A., Rich, J. J., Mofeff, J., Wajih, S., and Naqvi, A.: Organic carbon, and not copper, controls denitrification in oxygen minimum zones of the ocean, Deep-Sea Res. Pt. I, 55, 1672–1683, https://doi.org/10.1016/j.dsr.2008.07.005, 2008.

Waser, N., Yin, K., Yu, Z., Tada, K., Harrison, P., Turpin, D., and Calvert, S.: Nitrogen isotope fractionation during nitrate, ammonium and urea uptake by marine diatoms and coccolithophores under various conditions of N availability, Mar. Ecol. Prog. Ser., 169, 29–41, https://doi.org/10.3354/meps169029, 1998.

Wehrli, B. and Stumm, W.: Vanadyl in natural waters: Adsorption and hydrolysis promote oxygenation, Geochim. Cosmochim. Ac., 53, 69–77, https://doi.org/10.1016/0016-7037(89)90273-1, 1989.

Weigand, M. A., Foriel, J., Barnett, B., Oleynik, S., and Sigman, D. M.: Updates to instrumentation and protocols for isotopic analysis of nitrate by the denitrifier method: Denitrifier method protocols and instrumentation updates, Rapid Commun. Mass Sp., 30, 1365–1383, https://doi.org/10.1002/rcm.7570, 2016.

Weijers, J. W. H., Lim, K. L. H., Aquilina, A., Sinninghe Damsté, J. S., and Pancost, R. D.: Biogeochemical controls on glycerol dialkyl glycerol tetraether lipid distributions in sediments characterized by diffusive methane flux, Geochem. Geophy. Geosy., 12, Q10010, https://doi.org/10.1029/2011GC003724, 2011.

Welander, P. V. and Summons, R. E.: Discovery, taxonomic distribution, and phenotypic characterization of a gene required for 3-methylhopanoid production, P. Natl. Acad. Sci. USA, 109, 12905–12910, https://doi.org/10.1073/pnas.1208255109, 2012.

Weltje, G. J. and Tjallingii, R.: Calibration of XRF core scanners for quantitative geochemical logging of sediment cores: Theory and application, Earth Planet. Sc. Lett., 274, 423–438, https://doi.org/10.1016/j.epsl.2008.07.054, 2008.

Werne, J. P., Hollander, D. J., Behrens, A., Schaeffer, P., Albrecht, P., and Sinninghe Damsté, J. S.: Timing of Early Diagenetic Sulfurization of Organic Matter: A Precursor-Product Relationship in Holocene Sediments of the Anoxic Cariaco Basin, Venezuela, Geochim. Cosmochim. Ac., 64, 1741–1751, https://doi.org/10.1016/S0016-7037(99)00366-X, 2000.

Westerhold, T., Marwan, N., Drury, A. J., Liebrand, D., Agnini, C., Anagnostou, E., Barnet, J. S. K., Bohaty, S. M., De

Vleeschouwer, D., Florindo, F., Frederichs, T., Hodell, D. A., Holbourn, A. E., Kroon, D., Lauretano, V., Littler, K., Lourens, L. J., Lyle, M., Pálike, H., Röhl, U., Tian, J., Wilkens, R. H., Wilson, P. A., and Zachos, J. C.: An astronomically dated record of Earth's climate and its predictability over the last 66 million years, Science, 369, 1383–1387, https://doi.org/10.1126/science.aba6853, 2020.

White, A. E., Foster, R. A., Benitez-Nelson, C. R., Masqué, P., Verdeny, E., Popp, B. N., Arthur, K. E., and Prahl, F. G.: Nitrogen fixation in the Gulf of California and the eastern tropical North Pacific, Prog. Oceanogr., 109, 1–17, https://doi.org/10.1016/j-pocean.2012.09.002, 2013.

Wignall, P. B. and Newton, R.: Pyrite framboid diameter as a measure of oxygen deficiency in ancient mudrocks, Am. J. Sci., 298, 537–552, https://doi.org/10.2475/ajs.298.7.537, 1998.

Wignall, P. B., Newton, R., and Brookfield, M. E.: Pyrite framboid evidence for oxygen-poor deposition during the Permian–Triassic crisis in Kashmir, Palaeogeogr. Palaeocl., 216, 183–188, https://doi.org/10.1016/j.palaeo.2004.10.009, 2005.

Wilfert, P., Krause, S., Liebetrau, V., Schönfeld, J., Haeckel, M., Linke, P., and Treude, T.: Response of anaerobic methanotrophs and benthic foraminifera to 20 years of methane emission from a gas blowout in the North Sea, Mar. Petrol. Geol., 68, 731–742, https://doi.org/10.1016/j.marpetgeo.2015.07.012, 2015.

Wilkin, R. T. and Barnes, H. L.: Pyrite formation in an anoxic estuarine basin, Am. J. Sci., 297, 620–650, https://doi.org/10.2475/ajs.297.6.620, 1997.

Wilkin, R. T., Barnes, H. L., and Brantley, S. L.: The size distribution of framboidal pyrite in modern sediments: an indicator of redox conditions, Geochim. Cosmochim. Ac., 60, 3897–3912, https://doi.org/10.1016/0016-7037(96)00209-8, 1996.

Wilkin, R. T., Arthur, M. A., and Dean, W. E.: History of water-column anoxia in the Black Sea indicated by pyrite framboid size distributions, Earth Planet. Sc. Lett., 148, 517–525, https://doi.org/10.1016/S0016-7037(01)00552-X, 1997.

Wilkinson, M. D., Dumontier, M., Aalbersberg, Ij. J., Appleton, G., Axton, M., Baak, A., Blomberg, N., Boiten, J.-W., Santos, L. B. da S., Bourne, P. E., Bouwman, J., Brookes, A. J., Clark, T., Crosas, M., Dillo, I., Dumon, O., Edmunds, S., Evelo, C. T., Finkers, R., Gonzalez-Beltran, A., Gray, A. J. G., Groth, P., Goble, C., Grethe, J. S., Heringa, J., Hoen, P. A. C. 't Hooft, R., Kuhn, T., Kok, R., Kok, J., Lusher, S. J., Martone, M. E., Mons, A., Packer, A. L., Persson, B., Rocca-Serra, P., Roos, M., van Schaik, R., Sansone, S.-A., Schultes, E., Sengstag, T., Slater, T., Strawn, G., Swertz, M. A., Thompson, M., Lei, J. van der, van Mulligen, E., Velterop, J., Waagmeester, A., Wittenburg, P., Wolstencroft, K., Zhao, J., and Mons, B.: The FAIR Guiding Principles for scientific data management and stewardship, Sci. Data, 3, 1–9, https://doi.org/10.1038/sdata.2016.18, 2016.

Winkelbauer, H. A., Cordova-Rodriguez, K., Reyes-Macaya, D., Scott, J., Glock, N., Lu, Z., Hamilton, E., Chenery, S., Holdship, P., Dormon, C., and Hoogakker, B.: Foraminifera iodine to calcium ratios: approach and cleaning, Geochem. Geophy. Geosy., 22, e2021GC009811, https://doi.org/10.1029/2021GC009811, 2021.

Winkelbauer, H. A., Hoogakker, B. A., Chance, R. J., Davis, C. V., Anthony, C. J., Bischoff, J., Carpenter, L. J., Chenery, S., Hamilton, E. M., Holdship, P., and Peck, V. L.: Planktic foraminifera
iodine/calcium ratios from plankton tows, Front. Mar. Sci., 10, 179, https://doi.org/10.3389/fmars.2023.1095570, 2023.

Woehle, C., Roy, A. S., Glock, N., Wein, T., Weissenbach, J., Rosenstiel, P., Hiebenthal, C., Michels, J., Schönfeld, J., and Dagan, T.: A novel eukaryotic denitrification pathway in foraminifera, Curr. Biol., 28, 2536–2543, https://doi.org/10.1016/j.cub.2018.06.027, 2018.

Woehle, C., Roy, A.-S., Glock, N., Michels, J., Wein, T., Weissenbach, J., Romero, D., Hiebenthal, C., Gorb, S. N., Schönfeld, J., and Dagan, T.: Denitrification in foraminifera has an ancient origin and is complemented by associated bacteria, P. Natl. Acad. Sci. USA, 119, e2200198119, https://doi.org/10.1073/pnas.2200198119, 2022.

Wollenburg, J., Raitzsch, M., and Tiedemann, R.: Novel high-pressure culture experiments on deep-sea benthic foraminifera – Evidence for methane seepage-related δ¹³C of *Cibicoides wuellerstorfi*, Mar. Micropal., 117, 47–64, https://doi.org/10.1016/j.marmicro.2015.04.003, 2015.

Wollenburg, J. E., Bijma, J., Cremer, C., Bickmeyer, U., and Colombo Zittier, Z. M.: Permanent ectoplasmic structures in deep-sea *Cibicoides* and *Cibicidoides* taxa – long-term observations at in situ pressure, Biogeosciences 18, 3903–3915, https://doi.org/10.5194/bg-18-3903-2021, 2021.

Wörmer, L., Lipp, J. S., Schröder, J. M., and Hinrichs, K.-U.: Application of two new LC-ESI-MS methods for improved detection of intact polar lipids (IPLs) in environmental samples, Org. Geochem., 59, 10–21, https://doi.org/10.1016/j.orggeochem.2013.03.004, 2013.

Woulds, C., Andersson, J. H., Cowie, G. L., Middelburg, J. J., and Levin, L. A.: The short-term fate of organic carbon in marine sediments: Comparing the Pakistan margin to other regions, Deep-Sea Res. Pt. II, 56, 393–402, https://doi.org/10.1016/j.dsr2.2008.10.008, 2009.

Wu, F., Qi, Y., Yu, H., Tian, S., Hou, Z., and Huang, F.: Vanadium isotope measurement by MC-ICP-MS, Chem. Geol., 421, 17–25, https://doi.org/10.1016/j.chemgeo.2015.11.027, 2016.

Yu, J., Elderfield, H., Jin, Z., and Booth, L.: A strong temperature effect on U/Ca in planktonic foraminiferal carbonates, Geochim. Cosmochim. Ac., 72, 4988–5000, https://doi.org/10.1016/j.gca.2008.07.011, 2008.

Xie, S., Liu, X.-L., Schubotz, F., Wakeham, S. G., and Hinrichs, K.-U.: Distribution of glycerol ether lipids in the oxygen minimum zone of the Eastern Tropical North Pacific Ocean, Org. Geochem., 71, 60–71, https://doi.org/10.1016/j.orggeochem.2014.04.006, 2014.

Yevenes, M. A., Figueroa, R., and Parra, O.: Seasonal drought effects on the water quality of the Biobío River, Central Chile, Environ. Sci. Pollut. Res., 25, 13844–13856, https://doi.org/10.1007/s11356-018-1415-6, 2018.

Zahn, R., Winn, K., and Sarnthein, M.: Benthic foraminiferal δ¹³C and accumulation rates of organic carbon: Uvigerina peregrina group and *Cibicoides wuellerstorfi*, Paleocean. Paleoclim., 1, 27–42, https://doi.org/10.1029/PA001i001p00027, 1986.

Zarkogiannis, S. D., Iwasaki, S., Rae, J. W. B., Schmidt, M. W., Mortyn, P. G., Kontakiotis, G., Hertzberg, J. E., and Rickaby, R. E. M.: Calcification, Dissolution and Tied Properties of Modern Planktonic Foraminifera From the Central Atlantic Ocean, Front. Mar. Sci., 9, 64801, https://doi.org/10.3389/fmars.2022.864801, 2022.

Zarriess, M. and Mackensen, A.: Testing the impact of seasonal phytodetritus deposition on δ¹³C of epibenthic foraminifer *Cibicoides wuellerstorfi*: A 31,000 year high-resolution record from the northwest African continental slope, Paleocean. Paleoclim., 26, PA2202, https://doi.org/10.1029/2010PA001944, 2011.

Zhang, F., Romaniello, S. J., Algeo, T. J., Lau, K. V., Clapham, M. E., Richoz, S., Herrmann, A. D., Smith, H., Horacek, M., and Anbar, A. D.: Multiple episodes of extensive marine anoxia linked to global warming and continental weathering following the latest Permian mass extinction, Sci. Adv., 4, e1602921, https://doi.org/10.1126/sciadv.1602921, 2018.

Zhang, F., Lenton, T. M., del Rey, Á., Romaniello, S. J., Chen, X., Planavsky, N. J., Clarkson, M. O., Dahl, T. W., Lau, K. V., and Wang, W.: Uranium isotopes in marine carbonates as a global ocean paleoredox proxy: a critical review, Geochim. Cosmochim. Ac., 287, 27–49, https://doi.org/10.1016/j.gca.2020.05.011, 2020.

Zhang, F., Stockey, R. G., Xiao, S., Shen, S.-Z., Dahl, T. W., Wei, G.-Y., Cao, M., Li, Z., Kang, J., Anbar, A. D., and Planavsky, N. J.: Uranium isotope evidence for extensive shallow water anoxia in the early Tonian oceans, Earth Planet. Sc. Lett., 583, 117437, https://doi.org/10.1016/j.epsl.2022.117437, 2022.

Zheng, Y., Anderson, R. F., van Geen, A., and Fleisher, M. Q.: Preservation of particulate non-lithogenic uranium in marine sediments, Geochim. Cosmochim. Ac., 66, 3085–3092, https://doi.org/10.1016/S0016-7037(01)00632-9, 2002a.

Zheng, Y., Anderson, R. F., van Geen, A., and Fleisher, M. Q.: Remobilization of authigenic uranium in marine sediments by bioturbation, Geochim. Cosmochim. Ac., 66, 1759–1772, https://doi.org/10.1016/S0016-7037(01)00886-9, 2002b.

Zehr, J. P.: Nitrogen fixation by marine cyanobacteria, Trends Microbiol., 19, 162–173, https://doi.org/10.1016/j.tim.2010.12.004, 2011.

Zhou, X., Thomas, E., Rickaby, R. E. M., Winguth, A. M. E., and Lu, Z.: I/Ca evidence for upper ocean deoxygenation during the PETM, Paleocean. Paleoclim., 29, 964–975, https://doi.org/10.1002/2014PA002702, 2014.

Zhou, X., Thomas, E., Winguth, A. M. E., Ridgwell, A., Scher, H., Hoogakker, B. A. A., Rickaby, R. E. M., and Lu, Z.: Expanded oxygen minimum zones during the late Paleocene-early Eocene: Hints from multiproxy comparison and ocean modeling, Paleocean. Paleoclim. 31, 1532–1546, https://doi.org/10.1002/2016PA003020, 2016.

Zhou, X., Hess, A. V., Bu, K., Sagawa, T., and Rosenthal, Y.: Simultaneous determination of I/Ca and other elemental ratios in foraminifera: comparing results from acidic and basic solutions, Geochem. Geophy. Geosy., 23, e2022GC010660, https://doi.org/10.1029/2022GC010660, 2022.

Zhou, Y. and McManus, J. F.: Authigenic uranium deposition in the glacial North Atlantic: Implications for changes in oxygenation, carbon storage, and deep water-mass geometry, Quaternary Sci. Rev., 300, 107914, https://doi.org/10.1016/j.quascirev.2022.107914, 2023.

Zindorf, M., Rush, D., Jaeger, J., Mix, A., Penkrot, M. L., Schneger, B., Sidgwick, F. R., Talbot, H. M., Land, C. van der, Wagner, T., Walczak, M., and März, C.: Reconstructing oxygen deficiency in the glacial Gulf of Alaska: Combining biomarkers and
trace metals as paleo-redox proxies, Chem. Geol., 558, 119864,
https://doi.org/10.1016/j.chemgeo.2020.119864, 2020.

Zonneveld, K. A. F., Versteegh, G. J. M., Kasten, S., Eglinton, T.I., Emeis, K. C., Huguet, C., Koch, B. P., de Lange, G. J., de Leeuw, J. W., Middelburg, J. J., Mollenhauer, G., Prahl, F. G., Rethemeyer, J., and Wakeham, S. G.: Selective preservation of organic matter in marine environments; processes and impact on the sedimentary record, Biogeosciences, 7, 483–511, https://doi.org/10.5194/bg-7-483-2010, 2010.