cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.484982
title: (Table 1) Major and trace elements of sediment core CRP-3

description: The CRP-3 core, drilled in western McMurdo Sound in October and November 1999, penetrated 823 m of lower Oligocene (to possibly upper Eocene) glacially influenced sediments. The palaeoclimatic record of CRP-3 is examined using major element analyses of bulk core samples of fine grained sediments (mudstones and siltstones) and the Chemical Index of Alteration (CIA) of Nesbitt & Young (1982, doi:10.1038/299715a0). The CIA is calculated from the molar abundances of Al, K, Ca, and Na oxides, and its magnitude increases as the effects of chemical weathering increase. However, changes in sediment provenance can also affect the CIA, so provenance changes have been evaluated by examining the Al2O3/TiO2 ratios and the Sr and Nb contents of the CRP-3 mudstones.Relatively low Nb contents (&lt;20 ppm) and relatively high Al2O3/TiO2 ratios (generally &gt;15) indicate that little or no McMurdo Volcanic Group detritus was incorporated in these sediments. Instead, these sediments appear to be mixtures of Beacon Supergroup, Ferrar Dolerite, and basement (Granite Harbour Intrusives) components; increased Sr contents suggest that the importance of basement-derived material is greatest above ~200 metres below seafloor (mbsf), whereas Beacon Supergroup and/or Ferrar Dolerite components dominate below that level.Below ~400 mbsf, the CIA profile is irregular and shows no correlation to the Al2O3/TiO2 record; as a result, the effects of weathering and provenance controls have not yet been interpreted for this part of the CIA profile. Above ~400 mbsf, however, four "cycles" of CIA increase/decrease (each spanning 50-100 m of stratigraphic thickness) are superimposed on a general decrease in CIA values upcore, and Al2O3/TiO2 ratios exhibit a matching pattern of "cycles". This correlation indicates that short-term provenance changes occurred during deposition of the upper half of CRP-3, and affected its CIA record. However, the Al2O3/TiO2 profile does not show any long-term trend above ~400 mbsf, so that the general decrease in CIA values above that level does not appear to be provenance-related. Instead, the general upcore decrease in the importance of chemical weathering above ~400 mbsf may record an episode of climatic deterioration prior to -31 Ma.
description: Supplement to: Krissek, Lawrence A; Kyle, Philip R (2001): Geochemical indicators of weathering, Cenozoic palaeoclimates and provenance in fine-grained sediments from CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(4), 561-568
DOI: 10.1594/pangaea.802673
title: (Appendix) Coarse-sand fraction abundance and composition at DSDP Site 86-579 and Hole 86-580

description: The abundance and composition of the coarse-sand fraction (250 µm-2 mm) of samples from Deep Sea Drilling Project Sites 579 and 580 were investigated to determine the chronology of ice rafting at these locations. The ice-rafting signal at these sites is reduced relative to the generalized ice-rafting chronology of the North Pacific (Kent et al., 1971) because of increased distance to the ice-rafting source areas. These data, however, do record the general increase in ice-rafting importance as sediment age decreases, especially between 0 and 1.0 m.y. ago. In addition, peaks in ice-rafting importance since 1.0 m.y. ago at Sites 579 and 580 are generally synchronous with periods of major ice-rafting influence throughout the North Pacific. The first occurrence of ice-rafted debris at the Matuyama/Gauss magnetic boundary supports a proposed age of approximately 2.47 m.y. for the onset of major Northern Hemisphere glaciation. The coarse-sand fraction at Sites 579 and 580 contains a significant component of non-ice-rafted material, particularly biogenic particles and volcanic pumice. Under these conditions, the standard assumption that the weight percent of the coarse-sand fraction reflects variations in ice-rafting importance may not be valid. For samples taken at some distance from the source of ice-rafted debris, both the abundance and the composition of the coarse-sand fraction must be considered to obtain a valid measure of the influence of sediment transport via ice rafting.
description: Supplement to: Krissek, Lawrence A; Morley, Joseph J; Lofland, Darlene K (1985): The occurrence, abundance, and composition of ice-rafted debris in sediments from Deep Sea Drilling Project Sites 579 and 580, Northwest Pacific. In: Heath GR; Burckle LH; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 86, 647-655
DOI: 10.1594/pangaea.834750
title: The California current predator diet database: synthesis of common forage species

description: Characterization of the diets of upper-trophic predators is a key ingredient in management including the development of ecosystem-based fishery management plans, conservation efforts for top predators, and ecological and economic modeling of predator prey interactions. The California Current Predator Diet Database (CCPDD) synthesizes data from published records of predator food habits over the past century. The database includes diet information for 100+ upper-trophic level predator species, based on over 200 published citations from the California Current region of the Pacific Ocean, ranging from Baja, Mexico to Vancouver Island, Canada. We include diet data for all predators that consume forage species: seabirds, cetaceans, pinnipeds, bony and cartilaginous fishes, and a predatory invertebrate; data represent seven discrete geographic regions within the CCS (Canada, WA, OR, CA-n, CA-c, CA-s, Mexico). The database is organized around predator-prey links that represent an occurrence of a predator eating a prey or group of prey items. Here we present synthesized data for the occurrence of 32 forage species (see Table 2 in the affiliated paper) in the diet of pelagic predators (currently submitted to Ecological Informatics). Future versions of the shared-data will include diet information for all prey items consumed, not just the forage species of interest.
description: Supplement to: Szoboszlai, Amber I; Thayer, Julie A; Wood, Spencer A; Sydeman, William J; Koehn, L E (2015): Forage species in predator diets: Synthesis of data from the California Current. Ecological Informatics, 29, 45-56
DOI: 10.1594/pangaea.787710
title: (Table T2) Integrated intensity (peak area) of matrix minerals of ODP Hole 173-1068A

description: Mass-wasting deposits characterize the Upper Jurassic(?) to Lower Cretaceous sedimentary record of the Iberia Abyssal Plain. These deposits include olistostromes at Site 897, olistostromes and/or possible rock-fall deposits at Site 899, a breccia succession at Site 1068, slumped and fractured deposits at Site 1069, and a breccia succession at Site 1070. Whereas the exact origin of these deposits is uncertain, the regional common occurrence of middle to upper Mesozoic mass-wasting deposits suggests that they record the early rifting evolution of the west Iberia margin.This data report presents both qualitative and semiquantitative results from XRD analyses of the breccia matrix at Site 1068. In this study the matrix is defined as the fine-grained particles (as viewed through a binocular microscope) plus cement. Results are based on analytical methods that aimed to isolate the desired matrix from larger clast contamination prior to XRD analyses. In addition, the breccia was sampled at a higher resolution than was conducted aboard ship, producing a more complete description of downcore matrix mineralogical changes. The data presented here may be used to (1) further justify the subunit designation of Unit IV made aboard ship, (2) help determine to what degree the matrix and the larger clasts (studied in thin section aboard ship; Shipboard Scientific Party, 1998, doi:10.2973/odp.proc.ir.173.106.1998) are compositionally distinct, (3) help identify the extent of hydrothermal fluid migration in the breccia, and (4) support the proposed shipboard hypothesis that the Site 1068 breccia succession resulted from multiple mass-wasting.
description: Sediment depth is given in mbsf. #1 = detected in trace amounts. Please note, that calibration curves could not be constructed and the mineral/boehmite peak area ratios have not been converted to mineral abundances. Rather, downcore variations in the abundance of a single mineral (e.g., calcite) are described using downcore changes in the integrated intensity ratios of that mineral. This method does not allow for comparison of the absolute abundances of two or more different minerals.
description: Supplement to: St. John, Kristen E Kudless (2000): Data report: Downcore variation of Site 1068 breccia matrix mineralogy. In: Beslier, M-O; Whitmarsh, RB; Wallace, PJ; Girardeau, J (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 173, 1-14
DOI: 10.1594/pangaea.780424
title: (Appendix A) Mass and terrigenous accumulation rates of ODP Sites 130-803 and 130-805
DOI: 10.1594/pangaea.856547
title: (Table1) Sedimentation rates and age-control points form ODP Hole 152-919A

description: Planktic d18O and d13C records and point count records of biogenic, volcanic, and nonvolcanic terrigenous [ice-rafted debris (IRD)] sediment components from Hole 919A in the Irminger basin, northern North Atlantic provide a comprehensive dataset from which a paleoceanographic reconstruction for the last 630 kyr has been developed. The paleoceanographic evolution of the Irminger basin during this time contains both long-term patterns and significant developmental steps. One long-term pattern observed is the persistent deposition of hematite-stained ice-rafted debris. This record suggests that the modern and late Pleistocene discharges of icebergs from northern redbed regions to the Irminger Sea lie in the low end of the range observed over the last 630 kyr. In addition, Arctic front fluctuations appear to have been the main controlling factor on the long-term accumulation patterns of IRD and planktic biogenic groups. The Hole 919A sediment record also contains a long-term association between felsic volcanic ash abundances and light d18O excursions in both interglacial and glacial stages, which suggests a causal link between deglaciations and explosive Icelandic eruptions. A significant developmental step in the paleoceanographic reconstruction based on benthic evidence was for diminished supply of Denmark Strait Overflow Water (DSOW) beginning at ~380 ka, possibly initiated by the influx of meltwater from broad-scale iceberg discharges along the east Greenland coast. There is also planktic evidence of a two-step cooling of sea surface conditions in the Irminger basin, first at ~338-309 ka and later at ~211-190 ka, after which both glacials and interglacials were colder as the Arctic front migrated southeast of Site 919. In addition to offering these findings, this reconstruction provides a longer-term geologic context for the interpretation of more recent paleoceanographic events and patterns of deposition from this region.
description: Supplement to: St. John, Kristen E Kudless; Flower, Benjamin P; Krissek, Lawrence A (2004): Evolution of iceberg melting, biological productivity, and the record of Icelandic volcanism in the Irminger basin since 630 ka. Marine Geology, 212(1-4), 133-152
DOI: 10.1594/pangaea.804836
title: (Table 2) Composition of ODP Site 152-918 coarse-sand ice-rafted debris
DOI: 10.1594/pangaea.734547
title: (Table 1) Summary of general lithology in IODP Exp302 cores

description: The Cenozoic ice-rafted debris (IRD) history of the central Arctic is reconstructed utilizing the terrigenous coarse sand fraction in IODP 302 cores from 0 to 273 meters composite depth. This Holocene - middle Eocene quantitative record of terrigenous sand accumulation on the Lomonosov Ridge, along with qualitative information on grain texture and composition, confirms the interpretation that ice initiation (sea ice and glacial ice) occurred ~46 Ma in the Arctic, and provides a long-term pattern of Arctic ice expansion and decay since the middle Eocene. IRD mass accumulation rates range from 0 to 0.13 g/cm2/ka in the middle Eocene and from 0 to 0.36 g/cm2/ka in the Neogene. IRD mass accumulation rate (MAR) maxima in the Miocene and Pliocene cooccur with either glacial initiation or intensification in the sub-Arctic. The 46.25 Ma IRD onset in the central Arctic slightly precedes the earliest evidence of ice in the Antarctic, and compares in timing with a &gt;1000 ppm decrease in atmospheric concentrations of CO2. The decline of pCO2 in the middle Eocene may have driven both poles across the temperature threshold that enabled the nucleation of glaciers on land and partial freezing of the surface Arctic Ocean, especially during times of low insolation.
description: A hiatus of 2.2 ma exists between 135 and 140 r-mcd, and a 26-ma hiatus exists at 198 r-mcd [Backman et al., 2008; Frank et al., 2008].
DOI: 10.1594/pangaea.789137
title: Fluorescence for CDOM, dissolved organic carbon, absorption coefficient at 350 nm and specific UV absorption measurements during POLARSTERN cruise ARK-XXII/2
DOI: 10.1594/pangaea.138357
title: Dissolved organic carbon in surface water during cruise BP99
DOI: 10.1594/pangaea.736324
title: (Appendix A) Abundance of coarse-sand IRD in ODP Hole 104-642B
DOI: 10.1594/pangaea.138356
title: Dissolved organic carbon in surface water during cruise BP97
DOI: 10.1594/pangaea.138358
title: Dissolved organic carbon in surface water during cruise BP00
DOI: 10.1594/pangaea.433089
title: Description of lithofacies associations and their interpreted settings from sequences of sediment core CRP-1 (Table 2)

description: Cape Roberts Project drillcore 1 was obtained from Roberts Ridge, a sea-floor high located at 77°S, 16 km offshore from Cape Roberts in western McMurdo Sound, Antarctica. The recovered core is about 147 m long with the upper 43.15 metres below the sea floor (revised figure) being dated as Quarternary and the older part of the sequence being Miocene. The core includes nine facies: sandy diamict, muddy diamict, gravel/conglomerate, mud(stone), clay(stone) and carbonate. These facies occure in associations that are repeated in particulare sequences throughout the core, and are interpreted as representing different depositional environments through time. Seven lithofacies associations are interpreted as representing offshore shelf, ice protected/below wave-base; prodeltaic/offshore shelf; delta front/sandy shelf; ice system; subglacial till/rainout diamict/debris flow diamicts singly or in combination; and a carbonate-rich shelf bank. The facies associations are used to infer that the Quaternary section represents deposition on a polar shelf with perhaps two or three glacial fluctuations. The Quaternary carbonate unit indicates a period of ice sheet retreat, but local glacial activity may have increased with an increase in costal precipitation. The Miocene section represents polythermal glacial systems. The older Miocene section is glacially dominated whereas the younger section is much less so. The glacially dominated section may provide evidence for a major glacial advance thar resulted un a low stand of global eustatic sea level at that time. After the low stand, eustatic sea level was gradually rising during deposition of the younger section dominated more by non-glacial processes.
description: Supplement to: Powell, Ross; Hambrey, Mike J; Krissek, Lawrence A (1998): Quaternary and Miocene glacial and climatic history of the Cape Roberts drillsite region, Antarctica. Terra Antartica, 5(3), 341-351
DOI: 10.1594/pangaea.263615
title: Dissolved organic carbon in surface water during cruise BP99 (underway)
DOI: 10.1594/pangaea.763420
title: Sulfur-isotope analyses of gypsium samples from the Southeast Greenland margin, southern Alaska and Gulf of Alaska (Table 1)

description: Gypsum grains were identified in Miocene–Pleistocene sediment cores from two deep-water ODP sites, Site 918 off the SE Greenland margin and Site 887 in the Gulf of Alaska, and in Holocene sediment cores from shallow-water localities in Disenchantment Bay and Muir Inlet in southern Alaska. Although initial morphologic and textural observations suggested a complex system in which the gypsum may have had more than one origin, quantitative sulfur isotope analyses of the gypsum provide evidence of its detrital nature. d34S values in gypsum from southern Alaska range between +0.0 and +7.1 per mil. Gypsum has d34S values between -27.1 and -27.5 per mil in the Gulf of Alaska and values between -28.5 and +0.2 per mil off the SE Greenland margin. All of these isotopic signatures are too highly depleted in d34S to have precipitated from seawater, present or past. In addition there is no significant change in d34S values for gypsum crystals with differing physical characteristics (abraded vs. unabraded) from the same stratigraphic horizon, suggesting all the gypsum is detrital regardless of the degree of abrasion. The isotopic and physical evidence, in combination with the onshore geology the environmental setting, and site characteristics of the gypsum-bearing marine localities, lead us to propose that the ultimate source of the gypsum is precipitation from freeze-induced terrestrial sediment or soil brines. Furthermore the combined evidence suggests that the subsequent occurrence of gypsum in glacimarine sediments results from ice-rafting (by icebergs or sea ice) of the frozen regolith and/or, in the proximal glacimarine setting of southern Alaska, very rapid burial via turbidity currents.
description: Supplement to: St. John, Kristen E Kudless; Cowan, Ellen A (2000): Terrestrial gypsum from Alaska and Greenland in glacially influenced marine sediments. Sedimentary Geology, 136(1-2), 43-58
DOI: 10.15468/dl.nj897x
title: Occurrence Download

description: A dataset containing 1616 species occurrences available in GBIF matching the query:
{
 "and" : [
 "BasisOfRecord is Specimen",
 "Country is Isle of Man",
 "Year 1978-2023"
 ]
}

 The dataset includes 1616 records from 26 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0034766-241126133413365/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.ah8p6b
title: Occurrence Download

description: A dataset containing 80352 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Ephippidae"
 ]
}

 The dataset includes 80352 records from 425 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0034764-241126133413365/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.gvje39
title: Occurrence Download

description: A dataset containing 6097 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Geometry POLYGON((-73.84003 6.74559,-74.28644 6.31964,-74.68079 5.58303,-74.81269 4.87374,-75.20198 3.35664,-73.95674 4.23211,-73.12769 4.27554,-72.61053 4.41109,-72.30657 5.18908,-72.12191 5.87177,-72.14829 6.65844,-72.72621 6.81493,-73.84003 6.74559))",
 "HasCoordinate is true",
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 "TaxonKey is Tremarctos ornatus (F.G.Cuvier, 1825)"
 ]
}

 The dataset includes 6097 records from 21 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0034767-241126133413365/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.xt9gbm
title: Occurrence Download

description: A dataset containing 38760 species occurrences available in GBIF matching the query:
{
 "and" : [
 "BasisOfRecord is Specimen",
 "Country is Israel",
 "Year 1978-2023"
 ]
}

 The dataset includes 38760 records from 357 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0034768-241126133413365/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.eyxfz9
title: Occurrence Download

description: A dataset containing 3392 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Drepane Cuvier, 1831"
 ]
}

 The dataset includes 3392 records from 122 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0034769-241126133413365/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.8py47p
title: Occurrence Download

description: A dataset containing 4784 species occurrences available in GBIF matching the query:
{
 "and" : [
 "DatasetKey is EOD – eBird Observation Dataset",
 "PublishingCountry is United Kingdom of Great Britain and Northern Ireland",
 "TaxonKey is Pandion haliaetus (Linnaeus, 1758)"
 ]
}

 The dataset includes 4784 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0183543-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.zcmfd8
title: Occurrence Download

description: A dataset containing 113 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Spain",
 "TaxonKey is Tetrao urogallus aquitanicus C.Ingram, 1915"
 ]
}

 The dataset includes 113 records from 4 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0019852-181003121212138/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.j6hluy
title: Occurrence Download

description: A dataset containing 551 species occurrences available in GBIF matching the query:
{
 "and" : [
 "BasisOfRecord is Human Observation",
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 "TaxonKey is Ursus maritimus Phipps, 1774",
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}

 The dataset includes 551 records from 11 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0019853-180131172636756/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.wyy9cj
title: Occurrence Download

description: A dataset containing 149 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Eurhynchium eustegium (Besch.) Dixon"
 ]
}

 The dataset includes 149 records from 15 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0153727-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.eytqpr
title: Occurrence Download

description: A dataset containing 83406 species occurrences available in GBIF matching the query:
{
 "and" : [
 {
 "or" : [
 "BasisOfRecord is Human Observation",
 "BasisOfRecord is Specimen"
 ]
 },
 "Country is Congo"
 ]
}

 The dataset includes 83406 records from 403 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0168439-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.