cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.15468/dl.ep9wtu
title: Occurrence Download

description: A dataset containing 3 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Allium minutum Vved."
 ]
}

 The dataset includes 3 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0025864-240216155721649/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.vwuj7y
title: Occurrence Download

description: A dataset containing 14 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Halichoeres salmofasciatus Allen & Robertson, 2002"
 ]
}

 The dataset includes 14 records from 4 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0069392-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.d8gvh3
title: Occurrence Download

description: A dataset containing 1 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Tritodynamia rathbuni Shen, 1932",
 "HasCoordinate is true",
 "Year is greater than or equal to 1970",
 "HasGeospatialIssue is false",
 "Geometry POLYGON((108.080642 16.439832, 121.84182 16.084389, 123.975906 41.313386, 108.669355 40.867975, 108.080642 16.439832))"
 ]
}

 The dataset includes 1 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0012668-230828120925497/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.dw2dbj
title: Occurrence Download

description: A dataset containing 829 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Magnoliopsida, Liliopsida, Gnetopsida, Cycadopsida, Cycadopsis Debey, 1848, Pinopsida, Ginkgoopsida)",
 "BasisOfRecord is one of (Specimen, Human Observation)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "Year is greater than or equal to 2000",
 "Geometry MULTIPOLYGON (((-157.057 68.21879, -156.922 67.976, -157.087 67.914, -156.4684 67.914, -155.664 67.92005, -155.615 67.85, -155.594 67.85184, -155.587 67.85105, -155.5736 67.854, -155.5671 67.85419, -155.5638 67.855, -155.557 67.85521, -155.5546 67.856, -155.552 67.856, -155.478 67.845, -155.2514 67.83161, -155.111 67.814, -154.866 67.853, -154.687 67.812, -154.673 67.81484, -154.6684 67.81402, -154.6646 67.815, -154.662 67.815, -154.6599 67.81522, -154.6109 67.82986, -154.5924 67.88468, -154.312 67.94, -153.834 67.916, -153.674 67.848, -153.2762 67.85173, -153.2753 67.864, -153.074 67.8552, -152.925 67.793, -152.572 67.791, -152.47 67.795, -152.417 67.795, -152.3941 67.76986, -152.3504 67.766, -152.3184 67.74258, -152.304 67.73684, -152.2984 67.736, -152.2904 67.73401, -152.2876 67.73268, -152.2866 67.73235, -152.2856 67.73213, -152.2846 67.73202, -152.2841 67.732, -152.2835 67.73201, -152.283 67.73205, -152.2825 67.73211, -152.282 67.7322, -152.2815 67.73232, -152.281 67.73247, -152.2805 67.73264, -152.28 67.73283, -152.2796 67.733, -152.271 67.73384, -152.2559 67.741, -152.2195 67.74464, -152.2112 67.753, -152.1737 67.75599, -152.17 67.74134, -152.054 67.72734, -151.985 67.755, -151.6881 67.80722, -151.489 67.795, -151.4486 67.804, -151.4288 67.80324, -151.4261 67.80222, -151.4256 67.80212, -151.425 67.80205, -151.424 67.802, -151.4105 67.80112, -151.3771 67.86581, -151.2189 67.84686, -151.0455 67.92094, -150.9644 68.00868, -150.754 68.017, -150.3949 68.03722, -150.212 68.022, -150.152 68.022, -150.152 68.053, -150.179 68.053, -150.221 68.059, -150.231 68.081, -150.521 68.109, -151.4108 68.147, -151.673 68.2, -152.9605 68.27091, -152.965 68.272, -153.741 68.312, -154.772 68.317, -157.057 68.21879)))"
 ]
}

 The dataset includes 829 records from 9 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0176902-210914110416597/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.f9s2m6
title: Occurrence Download

description: A dataset containing 3878 species occurrences available in GBIF matching the query:
{
 "and" : [
 "BasisOfRecord is one of (Human Observation, Specimen)",
 "Geometry POLYGON((-124.35214 16.3332,-91.05214 16.3332,-91.05214 43.24871,-124.35214 43.24871,-124.35214 16.3332))",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Bassariscus astutus (Lichtenstein, 1830)"
 ]
}

 The dataset includes 3878 records from 87 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0069373-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.36buun
title: Occurrence Download

description: A dataset containing 9539 species occurrences available in GBIF matching the query:
{
 "and" : [
 "BasisOfRecord is Human Observation",
 "DatasetKey is iNaturalist Research-grade Observations",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Larus delawarensis Ord, 1815",
 "Year 2011-2018"
 ]
}

 The dataset includes 9539 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0171517-210914110416597/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.jmurgx
title: Occurrence Download

description: A dataset containing 166 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Pristimantis xestus (Lynch, 1995), Pristimantis festae (Peracca, 1904), Pristimantis hectus (Lynch & Burrowes, 1990))",
 "BasisOfRecord is one of (Specimen, Human Observation, Observation, Machine Observation)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 166 records from 10 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0057155-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.940330
title: Biomarker record of sediment cores 2R to 5R at site PS104_21-3
DOI: 10.1594/pangaea.761774
title: Sea surface temperature reconstruction from sediment core MD03-2699
DOI: 10.1594/pangaea.925620
title: Bulk organic carbon and n-alkane composition data for time-series samples from the Rio Bermejo (Argentina) at river km 865 collected in 2017 - 2018

description: Additionally, we employed a local resident to collect surface water suspended sediment samples at river km 865 throughout the 2017-2018 water year. These samples were collected in a bucket, the sediment was allowed to settle, and then the water was decanted off the top. Recovered sediment was stored in sterile Whirlpak bags, and then dried in an oven at 40°C.We homogenized and disaggregated the dry sediment using a mortar and pestle, and removed coarse plant material &gt;1 mm. For each sample, we weighed an aliquot of sediment and loaded the material into aluminum cells for lipid extraction. Total lipid extracts (TLE) were recovered using an accelerated solvent extraction system (Dionex ASE) with 9:1 v/v dichloromethane: methanol. We added exactly 10 µg of internal standard (5-a-Androstane) to the TLE for unknown compound quantification. We then separated the TLE into three fractions using silica gel column chromatography with hexane (alkanes), 1:1 v/v hexane: dichloromethane (ketones), and 1:1 v/v dichloromethane: methanol (alcohols + acids) (Rach et al., 2020; doi:10.1016/j.orggeochem.2020.103995). Unsaturated compounds were removed from the alkane fraction using AgNO3-silica gel column chromatography with n-hexane (saturated n-alkanes) and DCM (unsaturated n-alkanes).n-alkanes were identified and quantified using an Agilent gas chromatograph (GC 7890-A) with flame ionization detection (FID) coupled to a single quadrupole mass spectrometer (MS 5975-C). We quantified n-alkane concentrations relative to the peak response of the internal standard, and then normalized the abundance to the sediment mass. We measured n-alkane d13C via GC-C-IRMS (gas chromatography/combustion/isotope-ratio mass spectrometry) with helium as a carrier gas (Agilent 7890N, ThermoFisher Delta V Plus). All compounds were measured in triplicate with a standard deviation of =0.5‰. Measurement quality was checked regularly by measuring n-alkane standards (nC15, nC20, nC25) with known isotopic composition (provided by Campro Scientific, Germany). d13C values were normalized to the Vienna Pee Dee Belemnite (VPDB) standard. We measured n-alkane d2H via GC-IRMS using a ThermoFisher Scientific Trace GC 1310 coupled to a Delta-V isotope ratio mass spectrometer. All d2H measurements were made in duplicate, and measurement quality was checked with d2H values were normalized to the Vienna Standard Mean Ocean Water (VSMOW) standard using an n-alkane standard mix with known d2H values (nC16 - nC30, from A. Schimmelman/Indiana University).
description: #999: not measured#9999: not detected
DOI: 10.1594/pangaea.925616
title: Bulk organic carbon and n-alkane composition data for leaf litter, soil, and floodplain sediment from the Rio Bermejo (Argentina) collected in 2015 - 2018

description: Endmember samples were collected and analyzed to determine the sources of organic material in the river suspended sediment. Endmembers include soil, leaf litter, and floodplain sediment. Soil and leaf litter samples were collected using an ethanol-cleaned hand trowel. Floodplain sediment samples were collected using an Edelman-type hand auger drilled down to a maximum of ~5 m. Samples were stored in paper bags, and then oven-dried at 40°C.n-alkanes were identified and quantified using an Agilent gas chromatograph (GC 7890-A) with flame ionization detection (FID) coupled to a single quadrupole mass spectrometer (MS 5975-C). We quantified n-alkane concentrations relative to the peak response of the internal standard, and then normalized the abundance to the sediment mass. We measured n-alkane d13C via GC-C-IRMS (gas chromatography/combustion/isotope-ratio mass spectrometry) with helium as a carrier gas (Agilent 7890N, ThermoFisher Delta V Plus). All compounds were measured in triplicate with a standard deviation of =0.5‰. Measurement quality was checked regularly by measuring n-alkane standards (nC15, nC20, nC25) with known isotopic composition (provided by Campro Scientific, Germany). d13C values were normalized to the Vienna Pee Dee Belemnite (VPDB) standard. We measured n-alkane d2H via GC-IRMS using a ThermoFisher Scientific Trace GC 1310 coupled to a Delta-V isotope ratio mass spectrometer. All d2H measurements were made in duplicate, and measurement quality was checked with d2H values were normalized to the Vienna Standard Mean Ocean Water (VSMOW) standard using an n-alkane standard mix with known d2H values (nC16 - nC30, from A. Schimmelman/Indiana University).
DOI: 10.1594/pangaea.925626
title: Bulk organic carbon and n-alkane composition data for river sediment depth profile samples from the Rio Bermejo (Argentina) collected in March 2017

description: We extracted and analyzed n-alkane compounds from river suspended sediment collected from the Rio Bermejo in Argentina. We collected 24 river depth profile samples collected during March 2017. We collected suspended particulate matter from water depth profiles at four locations along the mainstem Rio Bermejo (river km 135, 420, 865, 1220), one location on the Rio San Francisco (RSF) (river km -15), and one location on the Rio Bermejo upstream from the RSF confluence (river km -10) (Fig. 1a). We homogenized and disaggregated the dry sediment using a mortar and pestle, and removed coarse plant material &gt;1 mm. For each sample, we weighed an aliquot of sediment and loaded the material into aluminum cells for lipid extraction. Total lipid extracts (TLE) were recovered using an accelerated solvent extraction system (Dionex ASE) with 9:1 v/v dichloromethane: methanol. We added exactly 10 µg of internal standard (5-a-Androstane) to the TLE for unknown compound quantification. We then separated the TLE into three fractions using silica gel column chromatography with hexane (alkanes), 1:1 v/v hexane: dichloromethane (ketones), and 1:1 v/v dichloromethane: methanol (alcohols + acids) (Rach et al., 2020; doi:10.1016/j.orggeochem.2020.103995). Unsaturated compounds were removed from the alkane fraction using AgNO3-silica gel column chromatography with n-hexane (saturated n-alkanes) and DCM (unsaturated n-alkanes).n-alkanes were identified and quantified using an Agilent gas chromatograph (GC 7890-A) with flame ionization detection (FID) coupled to a single quadrupole mass spectrometer (MS 5975-C). We quantified n-alkane concentrations relative to the peak response of the internal standard, and then normalized the abundance to the sediment mass. We measured n-alkane d13C via GC-C-IRMS (gas chromatography/combustion/isotope-ratio mass spectrometry) with helium as a carrier gas (Agilent 7890N, ThermoFisher Delta V Plus). All compounds were measured in triplicate with a standard deviation of =0.5‰. Measurement quality was checked regularly by measuring n-alkane standards (nC15, nC20, nC25) with known isotopic composition (provided by Campro Scientific, Germany). d13C values were normalized to the Vienna Pee Dee Belemnite (VPDB) standard. We measured n-alkane d2H via GC-IRMS using a ThermoFisher Scientific Trace GC 1310 coupled to a Delta-V isotope ratio mass spectrometer. All d2H measurements were made in duplicate, and measurement quality was checked with d2H values were normalized to the Vienna Standard Mean Ocean Water (VSMOW) standard using an n-alkane standard mix with known d2H values (nC16 - nC30, from A. Schimmelman/Indiana University).
DOI: 10.1594/pangaea.924860
title: Lipid biomarker and bulk organic matter concentrations and carbon and hydrogen isotope data of sediment core GeoB7807-2
DOI: 10.1594/pangaea.932718
title: Sediment characteristics (Chla, Phaeo, TOC, TN, δ13C, δ15N, grain size) at stations in the Weddell Sea (POLARSTERN cruise PS 96, ANT-XXXI/2, December 2015–February 2016)

description: This dataset contains abiotic and biotic data from sediment samples from nine sites in the Weddell Sea (mostly South-Eastern). Data are provided for sediment pigments (chlorophyll a and phaeopigment content through fluorometry), total organic carbon (TOC), total nitrogen (TN), stable isotope values of carbon and nitrogen (δ13C, δ15N) and grain size (silt&clay &lt; 32 µm, very fine sand 63–125 µm sand, fine sand 125–250 µm, medium sand 250–500 µm, coarse sand 500–1000 µm, larger coarse sand &gt; 1000 µm). Before the TOC and carbon isotope analysis the sediment samples were acidified to eliminate inorganic carbon. A minimum of three replicate samples (cores) were collected using a MUC10 multicorer or giant box corer. Sediment cores were subsampled with a 60-ml syringe (inner diameter 2.7 cm) for stations 017, 026, 061, 072, and with a 10-ml syringe (inner diameter 1 cm) for stations 001, 037, 048, 104, 115. Subsamples were sliced in 1-cm steps down to 5 cm depth. Detailed methods are described in Säring et al. (submitted) except for stable isotopes: Flash combustion in a Flash 2000 (Thermo) elemental analyser to a Delta V advantage (Thermo) isotope ratio masspectrometer. δ values are reported relative to atmospheric N2 (δ15N) and Vienna PeeDee Belemnite (δ13C). Reference materials for stable isotope analysis: IAEA-N1, IAEA-N2, IAEA-N3, NBS 22, IAEA-CH-3 and IAEA-CH-6; calibration material: Acetanilide (Merck). The analytical precision for both stable isotope ratios was &lt;±0.2‰. Cores with the label -e (Environment) were only used to collect the above data. Environmental and fauna data were collected from cores with the label -i (Incubation). This data table is part of a larger study analysing the role of environmental parameters for meio- and macrofaunal community composition (see Related to below).
DOI: 10.1594/pangaea.932856
title: Abiotic and biotic sediment characteristics for stations from the North-Western Weddell Sea, Bransfield Strait, and Drake Passage (POLARSTERN cruise PS 81, ANT-XXIX/3, January-March 2013)

description: Around the Antarctic Peninsula (North-Western Weddell Sea, Bransfield Strait, Drake Passage) sediment samples were collected with a MUC6 multicorer. Cores were subsampled for environmental parameters with cut-oﬀ 10-ml syringes. Subsamples for determination of grain size, total organic carbon (TOC) and total nitrogen (TN) were stored at −20°C. Samples for pigment analyses were stored at −80°C. Subsamples were sliced in 1-cm slices (0–1 cm, 1–2 cm, 2–3 cm, 3–4 cm, 4–5 cm). Sediment grain sizes were determined with a Malvern Mastersizer 2000 and expressed as relative percentages of the diﬀerent size fractions. Total organic carbon (TOC) and total nitrogen (TN) were determined from freeze-dried samples by elemental analysis. Prior to combustion samples used for TOC analyses were acidiﬁed with 2% HCl in order to remove inorganic carbon. Pigments were extracted with 10 ml acetone (90%) from lyophilised sediment, separated by HPLC (High Performance Liquid Chromatography) and determined with a ﬂuorescence detector: Chlorophyll-a, phaeophytin and phorbide are expressed in µg/g. For details see Hauquier et al. (2015) and Veit-Köhler et al. (2018).
DOI: 10.1594/pangaea.877997
title: Hydrogen isotopes of n-C31 alkanes from sediment cores of the eastern tropical Indian Ocean
DOI: 10.1594/pangaea.939343
title: Productivity proxies of sediment core AMD15-CASQ1
DOI: 10.1594/pangaea.706738
title: (Table 3) Concentration of some compounds extracted by benzene-methanol in sediments from DSDP Site 1-6
DOI: 10.1594/pangaea.906750
title: Mineralogical characteristics, TOC-based properties and terrestrial component loadings in two river-marginal sea systems

description: This dataset includes mineralogical characteristics (surface area and mean grain size), TOC-based properties (TOC% and TOC-δ13C) and terrestrial component loadings (terrestrial organic carbon, long-chain n-alkanes and n-fatty acids (n-FAs)) in riverine suspended particulate matter (SPM) and coastal surface sediments of the Pearl River-northern South China Sea and the Yellow River-Bohai Sea/Yellow Sea.
description: Supplement to: Hou, Pengfei; Yu, Meng; Zhao, Meixun; Montluçon, Daniel; Su, Chenglong; Eglinton, Timothy Ian (2020): Terrestrial Biomolecular Burial Efficiencies on Continental Margins. Journal of Geophysical Research: Biogeosciences, 125(8)
DOI: 10.1594/pangaea.873764
title: n-alkane patterns of bryophytes from the polygon complex P3 from the Khatanga region
DOI: 10.1594/pangaea.917987
title: Geochemical Measurements of Sediment Trap Flood and Background Sediments in the Santa Barbara Basin, CA

description: &lt;0 = concentrations below detection limit
DOI: 10.1594/pangaea.759935
title: Content and composition of hydrocarbons in the upper layer of bottom sediments from the Kandalaksha Bay, White Sea

description: Data on alkane-naphthene hydrocarbon and organic carbon distributions in the upper layer of bottom sediments from the Kandalaksha Bay of the White Sea are presented. Alkane-naphthene hydrocarbon contents vary from 43.8 to 305.7 µg/g (0.88-60% of organic carbon). Oil pollution of the surface layer of bottom sediments was recognized over a cross-section from the oil station toward the open part of the bay. It is shown that significant amounts of terrigenous and technogenic organic matter are accumulated in fine silty sediments of the deeper parts of the bay and in its inlets. Analysis of alkane composition indicates predominantly terrigenous origin of the major portion of organic matter and evidences high degree of its transformation during accumulation.
description: Supplement to: Peresypkin, Valery I; Aleksandrov, A V (1996): Features of the delivery and distribution of alkane-naphthene hydrocarbons in the bottom sediments of the Kandalaksha Bay of the White Sea. Translated from Okeanologiya, 1996, 36(5), 727-734, Oceanology, 36(5), 685-691
DOI: 10.1594/pangaea.932762
title: Biotic and abiotic water-column characteristics (Chla, Phaeo, TC, TN, δ13C, δ15N) at stations in the Weddell Sea (POLARSTERN cruise PS 96, ANT-XXXI/2, December 2015–February 2016)

description: This dataset contains biotic and abiotic data from water-column samples taken with Niskin bottles mounted on the CTD rosette from 14 sites in the Weddell Sea (mostly South-Eastern). Data are provided for water-column pigments (chlorophyll a and phaeopigment content through fluorometry), total carbon (TC) and nitrogen (TN) and stable isotope values of carbon and nitrogen (δ13C, δ15N) from the chlorophyll maximum (Cmax, defined as the water depth with maximum fluorescence detected during in-situ profiles) and close to the sea bottom. Water was filtered onto glass fiber filters (GF/C for pigments, combusted GF/F for C and N analyses) and stored at -80°C prior to analysis. Detailed methods are described in Säring et al. (submitted) except for stable isotopes: Flash combustion in a Flash 2000 (Thermo) elemental analyser to a Delta V advantage (Thermo) isotope ratio masspectrometer. δ values are reported relative to atmospheric N₂ (δ15N) and Vienna PeeDee Belemnite (δ13C). Reference materials for stable isotope analysis: IAEA-N1, IAEA-N2, IAEA-N3, NBS 22, IAEA-CH-3 and IAEA-CH-6; calibration material: Acetanilide (Merck). The analytical precision for both stable isotope ratios was &lt;±0.2‰. Samples were not acidified to avoid loss of material. We assumed low inorganic carbon content in the water column for our analyses. This data table is part of a larger study analysing the role of environmental parameters for meio- and macrofaunal community composition (see Related to below).
description: The parameter 'Event label' contains information on: Expedition no./ station no.- deployment no.
DOI: 10.1594/pangaea.626551
title: (Table 2) Biomarker data from nine sites on a north-south transect from the Congo Fan (4°S) to the Cape Basin (30°) representing the interglacial stage MIS 1
DOI: 10.1594/pangaea.904447
title: Phytoplankton pigment concentration in high-nutrient low-chlorophyll subantarctic waters on Campbell Plateau, R/V Tangaroa cruise TAN1702
DOI: 10.1594/pangaea.971522
title: Concentrations and loadings of alkanes in surface sediments of Helgoland Mud Area in the North Sea

description: Surface sediment were extracted 4 times by ultrasonication with dichloromethane: methanol (9:1, v/v) for 15 min for FAs and alkanes. For quantification of FAs and alkanes, known amounts of 19-methylarachidic acid and squalane were added as internal standards prior to extraction. Supernatants from each extraction were obtained by centrifugation and combined. The total lipid extracts were concentrated and evaporated under a nitrogen stream. The total lipid extracts were saponified for 2 h at 80 °C with 1 mL of KOH (0.1 M) in methanol: H2O (9:1, v/v). After saponification, the neutral fractions were liquid-liquid extracted with n-hexane and alkanes were eluted from the neutral fractions by silica gel column chromatography with n-hexane. The remaining KOH solution was acidified to pH 1, from which FA were liquid-liquid extracted into dichloromethane. The extracted and dried FAs were converted to methyl ester derivatives (FAMEs) in methanol: HCl (95:5, v/v) at 60 °C for 12 h. After methylation, the FAME fraction was further purified by silica gel column chromatography using dichloromethane: hexane (2:1, v/v) to remove residual polar compounds. FAMEs and alkanes were analyzed on a 7890A gas chromatograph (GC) equipped with a DB-5MS fused silica capillary column (60 m, 250 µm, 0.25 µm) and a flame ionization detector (FID). Peak areas were determined by integrating the respective peaks and concentrations were calculated against the internal standards. FAME contents were subsequently corrected for the derivative methyl carbon to determine FA contents. FAs and alkanes were normalized to OC content.