Source: http://arctos.uit.no/?page_id=10&cn-entry-slug=philipp-assmy&cn-view=detail
Timestamp: 2019-04-19 23:12:34+00:00

Document:
Field experience from the Arctic Ocean and Southern Ocean.
Hegseth, E.N., Assmy, P., Wiktor, J.M., Wiktor Jr, J.M., Kristiansen, S., Leu, E., Tverberg, V., Gabrielsen, T.M., Skogseth, R. and Cottier, F. (2019). Phytoplankton seasonal dynamics in Kongsfjorden, Svalbard and the adjacent shelf, In: Advances in Polar Ecology.
de Sousa, A.G.G., Tomasino, M.P., Duarte, P., Fernández-Méndez, M., Assmy, P., Ribeiro, H., Surkont, J., Leite, R., Leal, J.P., Torgo, L., Magalhães, C. (2019) Diversity and Composition of Pelagic Prokaryotic and Protist Communities in a Thin Arctic Sea-Ice Regime. Microbial Ecology. doi:10.1007/s00248-018-01314-2.
Schulz, I., Montresor, M., Klaas, C., Assmy, P., Wolzenburg, S., Gauns, M., Thiele, S., Sarkar, A., Wolf-Gladrow, D., Naqvi, S.W.A., Smetacek, V. (2018) Remarkable structural resistance of a nanoflagellate-dominated plankton community to iron fertilization during the Southern Ocean experiment LOHAFEX. Marine Ecology Progress Series, 601, 77-95.
Krause, J.W., Duarte, C.M., Marquez, I.A., Assmy, P., Fernández-Méndez, M., Wiedmann, I., Wassmann, P., Kristiansen, S. and Agustí, S. (2018) Biogenic silica production and diatom dynamics in the Svalbard region during spring. Biogeosciences, 15, 6503-6517, doi: 10.5194/bg-15-6503-2018.
Kauko, H.M., Olsen, L.M., Duarte, P., Peeken, I., Granskog, M.A., Johnsen, G., Fernández-Méndez, M., Pavlov, A.K., Mundy, C.J., Assmy, P. (2018) Algal colonization of young Arctic sea ice in spring. Frontiers in Marine Science, doi.org/10.3389/fmars.2018.00199.
Belt, S.T., Brown, T.A., Smik, L., Assmy, P. and Mundy, C.J. (2017) Sterol identification in floating Arctic sea ice algal aggregates and the Antarctic sea ice diatom Berkeleya adeliensis. Organic Geochemistry, 118, 1-3, doi: 10.1016/j.orggeochem.2018.01.008.
Fernández-Méndez, M., Olsen, L.M., Kauko, H.M., Meyer, A., Rösel, A., Merkouriadi, I., Mundy, C.J., Ehn, J.K., Johansson, A.M., Wagner, P.A., Ervik, Å., Sorrell, B.K., Duarte, P., Wold, A., Hop, H. and Assmy, P. (2018) Algal hotspots in a changing Arctic Ocean: Sea-ice ridges and the snow-ice interface. Frontiers in Marine Science, 5:75, doi: 10.3389/fmars.2018.00075.
Wollenburg, J.E., Katlein, C., Nehrke, G., Nöthig, E.-M., Matthiessen, J., Wolf-Gladrow, D.A., Nikolopoulos, A., Gazquez-Sanchez, F., Rossmann, L., Assmy, P., Babin, M., Bruyant, F., Dybwad, C. and Peeken I. (2018) Ballasting by cryogenic gypsum enhances carbon export in a Phaeocystis under-ice bloom. Scientific Reports, 8:7703, doi: 10.1038/s41598-018-26016-0.
van Leeuwe, M., Tedesco, L., Arrigo, K., Assmy, P., Campbell, K., Meiners, K., Rintala, J.-M., Selz, V., Thomas, D. and Stefels, J., (2018) Microalgal biodiversity and primary production in Arctic and Antarctic sea ice: A synthesis. Elementa. 6:4, doi: 10.1525/elementa.267.
10. Laglera, L.M., Tovar-Sanchez, A., Iversen, M.H., González, H.E., Naik, H., Assmy, P., Klaas, C., Mazzocchi, G., Montresor, M., Naqvi, S.W.A. and Smetacek V. (2017). Iron cycling during the LOHAFEX iron fertilization experiment in the Southern Ocean, Part I. Iron partitioning. Marine Chemistry, 196, 148-161.
11. Brown, T.A., Assmy, P., Hop, H., Wold, A. and Belt, S.T. (2017) Transfer of ice algal carbon to ice-associated amphipods in the high-Arctic pack ice environment. Journal of Plankton Research, 39, 664-674.
12. Belt, S.T., Brown, T.A., Smik, L., Tatarek, A., Wiktor, J., Stowasser, G., Assmy, P., Allen, C. and Husum, K. (2017) Identification of C25 highly branched isoprenoid (HBI) alkenes in diatoms of the genus Rhizosolenia in high latitude marine phytoplankton. Organic Geochemistry, 110, 65-72.
13. Duarte, P., Meyer, A., Olsen, L.M., Kauko, H.M., Assmy, P., Rösel, A., Itkin, P., Hudson, S.R., Granskog, M.A., Gerland, S., Sundfjord, A., Steen, H., Hop, H., Peterson, A.K., Jeffery, N., Elliott, S.M., Hunke, E.C., Turner, A.K. (2017). Sea ice thermohaline-dynamics and biogeochemistry in the Arctic Ocean: empirical and model results. Journal of Geophysical Research – Biogeosciences, 122, doi:10.1002/ 2016JG003660.
14. Kauko, H.M., Taskjelle, T., Assmy, P., Pavlov, A.K., Mundy, C.J., Duarte, P., Fernández Méndez, M., Olsen, L. M., Hudson, S. R., Johnsen, G., Elliott, A., Wang, F. and Granskog, M. A. (2017). Windows in Arctic sea ice: light transmission and ice algal optical properties in a refrozen lead. Journal of Geophysical Research – Biogeosciences, 122, 1486–1505, doi:10.1002/ 2016JG003626.
15. Olsen, L.M., Laney, S.R., Duarte, P., Kauko, H.M., Fernández-Méndez, M., Mundy, C.J., Rösel, A., Meyer, A., Itkin, P., Cohen, L., Peeken, I., Tatarek, A., Róźańska, M., Wiktor, J., Taskjelle, T., Pavlov, A.K., Hudson, S.R., Granskog, M.A., Hop, H. and Assmy, P. (2017). The role of multiyear ice in seeding ice algae blooms in the Arctic pack ice. Journal of Geophysical Research – Biogeosciences, 122, doi:10.1002/2016JG003668.
16. Pavlov, A.K., Taskjelle, T., Kauko, H.M., Hamre, B., Hudson, S.R., Assmy, P., Duarte, P., Fernández-Méndez, M., Mundy, C.J., and Granskog, M.A. (2017). Altered inherent optical properties and estimates of the underwater light field during an Arctic under-ice bloom of Phaeocystis pouchetii. Journal of Geophysical Research – Oceans, 122, 4939–4961, doi:10.1002/ 2016JC012471.
18. Assmy, P., Fernández-Méndez, M., Duarte, P., Meyer, A., Randelhoff, A., Mundy, C.J., Olsen, L.M., Kauko, H.M., Bailey, A., Chierici, M., Cohen, L., Doulgeris, A.P., Ehn, J.K., Fransson, A., Gerland, S., Hop, H., Hudson, S.R., Hughes, N., Itkin, P., Johnsen, G., King, J.A., Koch, B.P., Koenig, Z., Kwasniewski, S., Laney, S.R., Nicolaus, M., Pavlov, A.K., Polashenski, C.M., Provost, C., Rösel, A., Sandbu, M., Spreen, G., Smedsrud, L.H., Sundfjord, A., Taskjelle, T., Tatarek, A., Wiktor, J., Wagner, P.M., Wold, A., Steen, H. and Granskog, M.A. (2017). Leads in Arctic pack ice enable early phytoplankton blooms below snow-covered sea ice. Scientific Reports, 7, 40850; doi: 10.1038/srep40850.
19. Barber, D.G., Hop, H., Mundy, C.J., Else, B., Dmitrenko, I.A., Tremblay, J.-E., Ehn, J.K., Assmy, P., Daase, M., Candlish, L.M. and Rysgaard, S. (2015). Selected physical, biological and biogeochemical implications of a rapidly changing Arctic Marginal Sea Ice Zone. Progress in Oceanography, 139, 122-150.
20. Leu, E., Mundy, C.J., Assmy, P., Campbell, K., Gabrielsen, T.M., Gosselin, M., Juul-Pedersen, T. and Gradinger, R. (2015). Arctic spring awakening – steering principles behind the phenology of vernal ice algae blooms. Progress in Oceanography, 139, 151-170.
21. Duarte, P., Assmy, P., Hop, H., Spreen, G., Gerland, S. and Hudson, S.R. (2015). Modeling potentials and limitations for estimating production of ice algae in the Arctic Ocean. Journal of Marine Systems, 145, 69-90.
22. Thiele, S., Wolf, C., Schulz, I.K., Assmy, P., Metfies, K. and Fuchs, B.M. (2014). Stable composition of the nano- and picoplankton community during the iron fertilization experiment LOHAFEX. PLOS ONE, 9(11), e113244.
23. Assmy, P., Cisewski, B., Henjes, J., Klaas, C., Montresor, M. and Smetacek, V. (2014). Response of the protozooplankton assemblage during the European Iron Fertilization Experiment (EIFEX) in the Antarctic Circumpolar Current. Journal of Plankton Research, 36(5), 1175-1189.
24. Latasa, M., Henjes, J., Scharek, R., Assmy, P., Röttgers, R. and Smetacek, V. (2014). Progressive decoupling between phytoplankton growth and microzooplankton grazing during an iron-induced phytoplankton bloom in the Southern Ocean. Marine Ecology Progress Series, 513, 39-50.
25. Ebersbach, F., Assmy, P., Martin, P., Schulz, I.K., Wolzenburg, S., Nöthig, E.-M. (2014). Particle flux characterisation and sedimentation patterns of protistan plankton during the iron fertilization experiment LOHAFEX in the Southern Ocean. Deep-Sea Research Part I, 89, 94-103.
26. Armbrecht, L.H., Smetacek, V. Assmy, P. and Klaas, C. (2014). Cell death and aggregate formation in the giant diatom Coscinodiscus wailesii (Gran & Angst, 1931). Journal of Experimental Marine Biology and Ecology, 452, 31-39.
27. Lydersen, C., Assmy, P., Falk-Petersen, S., Kohler, J., Kovacs, K.M., Reigstad, M., Steen, H., Strøm, H., Sundfjord, A., Varpe, Ø., Walczowskic, W., Weslawskic, J.M. and Zajaczkowskic, M. (2014). The importance of glacier fronts for marine mammals and seabirds in Svalbard, Norway. Journal of Marine Systems, 129, 452-471.
29. Assmy, P., Smetacek, V., Montresor, M., Klaas, C., Henjes, J., Strass, V.H., Arrieta, J.M., Bathmann, U., Berg, G.M., Breitbarth, E., Cisewski, B., Friedrichs, L., Fuchs, N., Herndl, G.J., Jansen, S., Krägefsky, S., Latasa, M., Peeken, I., Röttgers, R., Scharek, R., Schüller, S.S., Steigenberger, S., Webb, A., and Wolf-Gladrow, D. (2013). Thick-shelled, grazer-protected diatoms decouple ocean carbon and silicon cycles in the iron-limited Antarctic Circumpolar Current. Proceedings of the National Academy of Sciences of the United States of America, 110(51), 20633-20638, doi: 10.1073/pnas.1309345110.
30. Assmy, P., Ehn, J.K., Fernández-Méndez, M., Hop, H., Katlein, C., Sundfjord, A., Bluhm, K., Daase, M., Engel, A., Fransson, A., Granskog, M.A., Hudson, S.R., Kristiansen, S., Nicolaus, M., Peeken, I., Renner, A.H.H., Spreen, G., Tatarek, A. and Wiktor, J. (2013). Floating ice-algal aggregates below melting Arctic sea ice. PLOS ONE, 8(10), e76599.
31. Fuchs, N., Scalco, E., Kooistra, W.H.C.F., Assmy, P., and Montresor, M. (2013). Genetic characterization and life cycle of the diatom Fragilariopsis kerguelensis. European Journal of Phycology, 48(4), 411-426.
32. Nomura, D., Assmy, P., Nehrke, G., Granskog, M.A., Fischer, M., Dieckmann, G.S., Fransson, A., Hu, Y. and Schnetger, B. (2013). Characterization of ikaite (CaCO3 x 6H2O) crystals in first-year Arctic sea ice north of Svalbard. Annals of Glaciology, 54, 125-131.
33. Smetacek, V., Klaas, C., Strass, V.H., Assmy, P., Montresor, M., Cisewski, B., Savoye, N., Webb, A., D’Ovidio, F., Arrieta, J.M., Bathmann, U., Bellerby, R., Berg, G.M., Croot, P., Gonzalez, S., Henjes, J., Herndl, G.J., Hoffmann, L.J., Leach, H., Losch, M., Mills, M.M., Neill, C., Peeken, I., Röttgers, R., Sachs, O., Sauter, E., Schmidt, M.M., Schwarz, J., Terbrüggen, A. and Wolf-Gladrow, D. (2012). Deep carbon export from a Southern Ocean iron-fertilized diatom bloom. Nature, 487, 313-319.
34. Leblanc, K., Arıstegui, J., Armand, L., Assmy, P., Beker, B., Bode, A., Breton, E., Cornet, V., Gibson, J., Gosselin, M.-P., Kopczynska, E., Marshall, H., Peloquin, J., Piontkovski, S., Poulton, A.J., Queguiner, B., Schiebel, R., Shipe, R., Stefels, J., van Leeuwe, M.A., Varela, M., Widdicombe, C., and Yallop, M. (2012). A global diatom database – abundance, biovolume and biomass in the world ocean. Earth System Science Data Discussions, 4, 149 – 165.
35. Ligowski, R., Jordan, R.W. and Assmy, P. (2012). Morphological adaptation of a planktonic diatom to growth in Antarctic sea ice. Marine Biology, 159, 817-827.
36. Geibert, W., Assmy, P., Bakker, D.C.E., Hanfland, C., Hoppema, M., Pichevin, L.E., Schröder, M., Schwarz, J.N., Stimac, I., Usbeck, R. and Webb, A. (2010). High productivity in an ice melting hotspot at the eastern boundary of the Weddell Gyre. Global Biogeochemical Cycles, 24 GB3007, doi:10.1029/2009GB003657 .
37. Gaebler-Schwarz, S., Davidson, A., Assmy, P., Chen, J., Henhes, J., Nöthig, E.-M., Lunau, M. and Medlin, L.K. (2010). A new cell stage in the haploid-diploid life cycle of the colony-forming haptophyte Phaeocystis antarctica and its ecological implications. Journal of Phycology, 46(5), 1006-1016.
38. Kooistra, W.H.C.F., Sarno, D., Hernandez-Becerril, D.U., Assmy, P., Di Prisco, C. and Montresor, M. (2010). Comparative molecular and morphological phylogenetic analyses of taxa in the Chaetocerotaceaea (Bacillariophyta). Phycologia, 49(5), 471-500.
39. Assmy, P. and Smetacek, V. (2009). Algal blooms, In: Encyclopedia of Microbiology, (Moselio Schaechter, Editor), Oxford: Elsevier, pp. 27-41.
40. Michels, J., Dieckmanna, G.S., Thomas, D.N., Schnack-Schiel, S.B., Krell, a., Assmy, P., Kennedy, H., Papadimitrioub,S., Cisewskia, B. (2008). Short-term biogenic particle flux under late spring sea ice in the western Weddell Sea, Deep-Sea Research II, 55, 1024-1039.
41. Assmy, P., Hernandez-Becerril, D.U. and Montresor, M. (2008). Morphological variability and life cycle traits of the type species of the diatom genus Chaetoceros, C. dichaeta. Journal of Phycology, 44, 152-163.
42. Henjes, J., Assmy, P. (2008). Particle availability controls agglutination in pelagic tintinnids in the Southern Ocean. Protist, 159, 239-250.
43. Assmy, P. (2008). 2nd Neogene Polar Marine Diatom Workshop, 4-10th August 2007, University of Nebraska-Lincoln, USA or alternatively mutual learning between a plankton ecologist and micropalaeontologists. Diatom Research, 23, 263-265.
44. Assmy, P., Henjes, J, Klaas, C. and Smetacek, V. (2007). Mechanisms determining species dominance in a phytoplankton bloom induced by the iron fertilization experiment EisenEx in the Southern Ocean. Deep-Sea Research I, 54, 340-362.
45. Henjes, J., Assmy, P., Klaas, C., Verity, P. and Smetacek, V. (2007a). Response of microzooplankton (protists and small copepods) to an iron-induced phytoplankton bloom in the Southern Ocean (EisenEx). Deep-Sea Research I, 54, 363-384.
46. Henjes, J, Assmy, P., Klaas, C. and Smetacek, V. (2007b). Response of the larger protozooplankton to an iron-induced phytoplankton bloom in the Polar Frontal Zone of the Southern Ocean (EisenEx). Deep-Sea Research I, 54, 774-791.
47. Croot, P. L., Passow, U., Assmy, P., Jansen, S. and Strass, V. H. (2007). Surface active substances in the upper water column during a Southern Ocean Iron Fertilization Experiment (EIFEX), Geophysical Research Letters, 34, doi:10.1029/2006GL028080.
48. Hoffmann, L. J., Peeken, I., Lochte, K., Assmy P. and Veldhuis, M.J.W. (2006). Different reactions of Southern Ocean phytoplankton size classes to iron fertilization. Limnology and oceanography, 51(3), 1217-1229.
49. Assmy, P., Henjes, J., Smetacek, V. and Montresor M. (2006). Auxospore formation by the silica-sinking, oceanic diatom Fragilariopsis kerguelensis (BACILLARIOPHYCEAE), Journal of Phycology, 42, 1002-1006.
50. De Baar, H. J. W., Boyd, P.W., Coale, K.H., Landry, M.R., Tsuda, A., Assmy, P., Bakker, D.C.E., Bozec, Y., Barber, R.T., Brzezinski, M.A., Buesseler, K.O., Boye, M., Croot, P.L., Gervais, F., Gorbunov, M.Y., Harrison, P.J., Hiscock, W.T., Laan, P., Lancelot, C., Law, C.S., Levasseur, M., Marchetti, A., Millero, F.J., Nishioka, J., Nojiri, Y., van Oijen, T., Riebesell, U., Rijkenberg, M.J.A., Saito, H., Takeda, S., Timmermans, K.R., Veldhuis, M.J.W., Waite, A.M. and Wong, C.-S. (2005). Synthesis of iron fertilization experiments: From the Iron Age in the Age of Enlightenment, Journal of Geophysical Research: Oceans, 110. doi: 10.1029/2004JC002601.
51. Smetacek V., Assmy P., Henjes J. (2004). The role of grazing in structuring Southern Ocean pelagic ecosystems and biogeochemical cycles, Antarctic Science, 16 (4), pp. 541-558.
Assmy, P., Lochte, K. and Smetacek, V. (2009). Plankton productivity and the role of iron in the Southern Ocean. In: Biological studies in polar oceans – exploration of life in icy waters. 35 research reports and reviews, Gotthilf and Irmtraut Hempel (Editors), Wirtschaftsverlag NW, Verlag für neue Wissenschaft, Bremerhaven, 227-235.

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