cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.967510
title: The significance of seasonal light and temperature interaction for the latitudinal distribution of seaweeds: biochemical and physiological raw data of a long-term multi-factorial experiment

description: Due to the global rise in temperature, recent studies predict species shifts towards higher latitudes. The temperate kelp Laminaria hyperborea (Phaeophyceae) is an abundant European bioengineering species that is widely distributed between northern Portugal and northern Norway, however not yet found in the High Arctic. To investigate its ability of the species to invade the high latitudes under past, present and future temperature scenarios, we conducted a long-term multi-factorial experiment using tissue of adult sporophytes of L. hyperborea collected from Porsangerfjorden, Norway. The samples were exposed to three different photoperiods (PolarNight, PolarDay, LongDay) at 0, 5 and 10°C for three months. The maximum photosynthetic quantum yield of photosystem II (Fv/Fm; Imaging-PAM, Walz GmbH Mess- und Regeltechnik, Effeltrich, Germany) was monitored once a week. For monitoring of potential growth, the size of the algal discs was photographed every two weeks and analyzed with ImageJ (Version 1.52a). Every four weeks, subsamples for monitoring the dry weight and for the biochemical analyses were taken. Laminarin content was determined following via enzymatic digestion. Mannitol concentration was analyzed using a HPLC. Phlorotannins were analyzed following the photometric Folin-Ciocalteu method. Absolut pigment concentrations were also analyzed using a HPLC and pool sizes, the de-epoxidation state of the xanthophyll cycle (DPS), and the ratios calculated afterwards.
description: Treatment details – multi-factorial experiment--------------------------------------------------------------------------------------------------Laminaria hyperborea samples from the Porsangerfjorden, Finmark, NorwayPolarDay: 24:0 light:dark-cycle; 30–35 μmol photons m-2 s-1 (PAR)LongDay: 18:6 light:dark-cycle; 30–35 μmol photons m-2 s-1 (PAR)PolarNight: 0:24 light:dark-cycle; total darknessSample: These values are used to differentiate multiple similar samples within the same replicate. They do not denote a relationship between weeks. E.g. Sample #3 from week 0 (w0) of Replicate 2, is not necessarily a sample of the same organism for Sample #3 from week 1 (w1) of Replicate 2. Meaning that Samples should not be taken as time series of measures of the same organism through time.w0 = week 0 (start)w4 = week 4w8 = week 8w12 = week 12 (end)set-up:2-L aerated Kautex bottles, 1/40 PES, medium changed 2x/week
DOI: 10.1594/pangaea.973582
title: Oceanographic parameters for the sample stations of the cruise AT004

description: Offshore wind energy is a steadily growing sector contributing to the worldwide energy production. The impact of these offshore constructions on the marine environment, however, remains unclear in many aspects. In fact, little is known about potential emissions from corrosion protection systems such as organic coatings or galvanic anodes composed of Al and Zn alloys, used to protect offshore structures. In order to assess potential chemical emissions from offshore wind farms and their impact on the marine environment water and sediment samples were taken in and around offshore wind farms of the German Bight between 12.04.2021 and 23.04.2021. At every sampling station oceanographic parameters were measured directly on board with respective probes of a multimeter for pH, dissolved oxygen, temperature and conductivity.
DOI: 10.1594/pangaea.973612
title: Trace metal distribution for water samples of the cruise AT004

description: Offshore wind energy is a steadily growing sector contributing to the worldwide energy production. The impact of these offshore constructions on the marine environment, however, remains unclear in many aspects. In fact, little is known about potential emissions from corrosion protection systems such as organic coatings or galvanic anodes composed of Al and Zn alloys, used to protect offshore structures. In order to assess potential chemical emissions from offshore wind farms and their impact on the marine environment water and sediment samples were taken in and around offshore wind farms of the German Bight between 12.04.2021 and 23.04.2021 within the context of the Hereon-BSH project OffChEm II. The water samples were taken in metal-free GO-FLO sampling bottles, filtered over &lt;0.45 µm polycarbonate filters into pre-cleaned LDPE bottles and acidified with nitric acid. The filtrates were then measured for their (trace) metal concentrations with ICP-MS/MS coupled online to a seaFAST preconcentration and matrix removal system.
DOI: 10.1594/pangaea.973616
title: Grain size distribution for sediment samples of the cruise AT004

description: Offshore wind energy is a steadily growing sector contributing to the worldwide energy production. The impact of these offshore constructions on the marine environment, however, remains unclear in many aspects. In fact, little is known about potential emissions from corrosion protection systems such as organic coatings or galvanic anodes composed of Al and Zn alloys, used to protect offshore structures. In order to assess potential chemical emissions from offshore wind farms and their impact on the marine environment water and sediment samples were taken in and around offshore wind farms of the German Bight between 12.04.2021 and 23.04.2021. The sediment samples were taken by a box grab and analyzed for their grain size distribution by laser diffraction.
DOI: 10.1594/pangaea.910692
title: (Table 1) Seawater chemistry during MarParCloud at Cape Verde islands

description: This dataset comprises seawater data (bulk water and sea surface microlayer-SML) from the MarParCloud campaign performed at the Cape Verde island Sao Vicente at the Cape Verde Atmospheric Observatory (CVAO) in September/October 2017.
DOI: 10.1594/pangaea.918004
title: Geochemical Measurements of Kelp in the Santa Barbara Basin, CA

description: &lt;0 = concentrations below detection limit.
DOI: 10.1594/pangaea.805160
title: (Table 2) Hydrocarbon content of ODP Hole 162-985A sediments
DOI: 10.1594/pangaea.883646
title: Holocene organic geochemical data from Borreguil de la Virgen (S Spain)

description: his dataset includes both bulk sediment organic data and biomarker data: total organic carbon (TOC), total nitrogen (TN), total hydrogen (TH), atomic hydrogen - carbon ratio (H/C), atomic carbon - nitrogen ratio (C/N), carbon isotopic composition (13C), and nitrogen isotopic composition (15N) (measured by means of isotope-ratio mass spectrometry with a coupled elemental analyser, IRMS-EA), as well as n-alkane concentrations (from C18 to C37), including the total n-alkane concentration, the average change length (ACL), the portion aquatic (Paq), and the carbon preference index (CPI) (measured using gas chromatography with flame-ionization detection - GC-FID).
DOI: 10.1594/pangaea.721825
title: BENGAL lipids in surface sediments
DOI: 10.1594/pangaea.819019
title: (Table 1) Sample descriptions and results: Carbon, lipid, and kerogen analyses, at DSDP Leg 64 Holes

description: Pleistocene sediments in the Guaymas Basin, Gulf of California, have been intruded by sills and their organic matter thus subjected to thermal stress. Sediment samples from DSDP/IPOD Sites 477, 478, and 481, and samples of thermally unaltered materials from Sites 474 and 479 were analyzed to characterize the lipids and kerogens and to evaluate the effects of the intrusive thermal stresses. The lipids of the thermally unaltered samples are derived from microbial and terrestrial higher-plant detritus. The samples from the sill proximities contain the distillates, and those adjacent to the sills contain essentially no lipids. The pyrograms of the kerogens from the unaltered samples reflect their predominantly autochthonous microbial origin. When compared with the unaltered samples, the pyrograms of the altered kerogen samples reflect the thermal effects by a reduction in the complexity of the products. Kerogens adjacent to the sills produced little or no pyrolysis products. The effects of intrusions into unconsolidated, wet sediments resulted in in situ pyrolysis of the organic matter, as confirmed by these data.
description: Sediment depth is given in mbsf. For analysis, various samples were combined to increase their overall amounts.
description: Supplement to: Simoneit, Bernd R T; Philp, R P (1982): Organic geochemistry of lipids and kerogen and the effects of basalt intrusions on unconsolidated oceanic sediments: Sites 477, 478, and 481, Guaymas Basin, Gulf of California. In: Curray, JR; Moore, DG; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 64, 883-904
DOI: 10.1594/pangaea.917988
title: Geochemical Measurements of River Sediment surrounding the Santa Barbara Basin, CA

description: River locations correspond to the locations in Napier et al. (2019; doi:10.1130/B32035.1).&lt;0 = concentrations below detection limit
DOI: 10.1594/pangaea.939837
title: Carbon Preference Index (CPI) from sediment core ARA04C/37
DOI: 10.1594/pangaea.918007
title: n-Alkanes of Floods, Turbidites, and Droughts over the past 2000 years in the Santa Barbara Basin, CA

description: &lt;0 = concentrations below detection limit.
DOI: 10.1594/pangaea.815068
title: (Table 2) Location of marine sediment samples along the eastern Italian shelf, CPI, ACL, ratio between n-C31 and n-C29 alkane, concentration of summed n-C29 and n-C31 alkane, stable δ¹³C and dD composition of n-C29 and n-C31 alkane

description: MV: mean value.SD: standard deviation.Sediment samples represent the top 2 cm.
DOI: 10.1594/pangaea.721808
title: Lipids of sediment core 12930-049
DOI: 10.1594/pangaea.757616
title: Averages and ranges of paleoenvironmental proxy records of ODP Hole 108-658C (Table 1)

description: Several high-resolution proxy environmental records have been obtained for the last 35 kyr from ODP Hole 658C, a well-studied site ca. 200 km off Cap Blanc, NW Africa. The collective assessment based on the marine proxies (UK'37 SST, contents of TOC and chlorins, Upwelling Radiolarian Index and the percentage of Florisphaera profunda), surprisingly indicates that the last glacial maximum (LGM) was characterized by warmer sea surface temperature (SST), weaker upwelling, and lower marine productivity, compared with the preceding older glacial and subsequent deglaciation periods. Of the terrigenous proxies, the mean grain size of the non-carbonate fraction and the terrigenous alkane content indicate that wind strength and aridity were high. The weaker upwelling at the 658 site during the LGM may have resulted from changes in the strength and direction of the wind systems and/or shifts in the position and geometry of the upwelling cell.
description: Supplement to: Zhao, Meixun; Eglinton, Geoffrey; Haslett, Simon K; Jordan, Richard William; Sarnthein, Michael; Zhang, Zhaohui (2000): Marine and terrestrial biomarker records for the last 35,000 years at ODP site 658C off NW Africa. Organic Geochemistry, 31(9), 919-930
DOI: 10.1594/pangaea.757866
title: (Table 6) Relative abundance and major strutural types of hydrocarbons in each DSDP Leg 75 kerogen pyrolysate

description: Obtained after heating for 72 hr. Number of crosses give a crude estimate of relative abundances i.e. +++++ = very abundant, + = minor amounts, Tr = trace, - = absent.
DOI: 10.1594/pangaea.789224
title: (Table 1) Sample descriptions, carbon contents, and lipid yields across the K/T boundary at DSDP Hole 93-605 and at Stevns Klint, Denmark

description: This reconnaissance study was undertaken to determine whether the mass extinctions and faunal successions that mark the Cretaceous/Tertiary (K/T) boundary left a discernible molecular fossil record in the sediments of this period. Lipid signatures of sediments taken from above and below the K/T boundary were compared in core and outcrop samples taken from two locations: the U.S. east coast continental margin (western Atlantic Ocean, DSDP Site 605) and Stevns Klint, Denmark. Four calcareous sediments taken from above and below the K/T boundary in DSDP Hole 605, Section 605-66-1, revealed changing lipid signatures between above and below that are characterized by a large component of unresolved naphthenic hydrocarbons and a homologous series of n-alkanes ranging from Ci6 to C33. These lipid signatures are attributed to an influx of a terrestrial higher plant component and to bacterial reworking of the sediments under partially anoxic depositional and/or diagenetic conditions. The outcrop samples from Stevns Klint had extremely low concentrations of indigenous lipids. The fish clay at the K/T boundary contained traces of microbial hydrocarbons and fatty acids, whereas the carbonates above and below had only microbial fatty acids and additional terrestrial resin acids. The data from both sites indicate a perturbation in the deposition of lipid compound classes across the K/T boundary.
description: #0 = not detectable, &lt;1 = traces
description: Supplement to: Simoneit, Bernd R T; Beller, Harry R (1987): Lipid geochemistry of Cretaceous/Tertiary boundary sediments, Hole 605, Deep Sea Drilling Project Leg 93 and Stevns Klint, Denmark. In: van Hinte, JE; Wise, SW Jr; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 93, 1211-1221
DOI: 10.1594/pangaea.757311
title: (Table 6) Concentrations of hydrocarbons in hydrated sediment cores
DOI: 10.1594/pangaea.910693
title: (Table 2) Concentrations of pigments, DOC and microbial parameters in the Sea surface Microlayer (SML) and bulk water during MarParCloud at Cape Verde islands

description: This dataset comprises seawater data (bulk water and sea surface microlayer-SML) from the MarParCloud campaign performed at the Cape Verde island Sao Vicente at the Cape Verde Atmospheric Observatory (CVAO) in September/October 2017.
DOI: 10.1594/pangaea.721809
title: Lipids of sediment core 12930-075
DOI: 10.1594/pangaea.918489
title: Organic geochemical proxies of the Govone section

description: 0.0001 = traces.
DOI: 10.1594/pangaea.205716
title: (Table 5) n-Alkane concentrations and δ¹³C values of n-alkanes from surface sediments, Southeast Atlantic
DOI: 10.1594/pangaea.89382
title: Organic chemistry analysis on surface sediments from the equatorial east Atlantic
DOI: 10.1594/pangaea.907121
title: N-Alkane of core MD11-3357 from the Marion Dufresne cruise MD185 (Indien Sud 2)
DOI: 10.1594/pangaea.804605
title: Sterol, n-alcohol and n-alkane composition of living fen plants

description: In groundwater-fed fen peatlands, the surface biomass decays rapidly and, as a result, highly humified peat is formed. A high degree of humification constrains palaeoecological studies because reliable identification of plant remains is hampered. Organic geochemistry techniques as a means of identifying historical plant communities have been successfully applied tobog peat. The method has also been applied to fen peat, but without reference to the composition of fen plants. We have applied selected organic geochemistry methods to determine the composition of the neutral lipid fractions from 12 living fen plants, to investigate the potential for the distributions to characterize and separate different fen plants and plant groups. Our results show correspondence with previous studies, e.g. C23 and C25n-alkanes dominating Sphagnum spp. and C27 to C31 alkanes dominating vascular plants. However, we also found similarities in n-alkane distributions between Sphagnum spp. and the below ground parts of some vascular plants. We tested the efficiency of different n-alkane ratios to separate species and plant groups. The ratios used for bog studies (e.g. n-C23/n-C25 and n-C23/n-C29) did not work as consistently for fen plants. Some differences in sterol distribution were found between vascular plants and mosses; in general vascular plants had a higher concentration of sterols. When distributions of n-alkanes, n-alkane ratios and sterols were all included as variables, redundancy analysis (RDA) separated different plant groups into their own clusters. Our results imply that the pattern for bog biomarkers cannot directly be applied to fen environments. Nevertheless, they encourage further testing to determine whether or not the identification of plant groups, plants or plant parts from highly humified peat is possible by applying fen species-specific biomarker proxies.
description: Supplement to: Ronkainen, Tiina M; McClymont, Erin L; Väliranta, Minna; Tuittila, Eeva-Stiina (2013): The n-alkane and sterol composition of living fen plants as a potential tool for palaeoecological studies. Organic Geochemistry, 59, 1-9
DOI: 10.1594/pangaea.910474
title: Organic geochemical measurements of sediment core GeoB20616-1

description: Climate sensitive organic proxies, like the distribution and isotopic composition of plant-wax lipids provide information on climatic changes in the catchment areas of the Incomati, Matola, and Lusutfu rivers. At the transition between glacials and interglacials, shifts in vegetation correlate with changes in sea surface temperature in the Agulhas current. The local hydrology, however, does not follow these orbital-paced shifts. Instead, precipitation patterns follow millennial scale variations with different forcing mechanisms in glacial versus interglacial climatic states.
description: GeoB20616-1 organic geochemical down-core data. n-Alkane isotopic composition and distribution descriptive parameters averaged. The elevated CPI values ranging from 3.8 to 14 indicate that the nalkanes within the terrestrial and marine samples were likely derived from nondegraded, terrestrial, higher plant material (Eglinton & Hamilton, 1967). We focus the discussion on the isotopic signals of the n-C31 alkane but note that the n-C29 and n-C33 alkanes reveal similar trends.
DOI: 10.1594/pangaea.103798
title: Flux of biomarker from mooring BI2

description: No value is given if concentration was below the detection limit of gaschromatography of 500 pg/myl.
DOI: 10.15468/dl.7grxqz
title: Occurrence Download

description: A dataset containing 10053 records in GBIF matching the query:
SELECT
 occurrence.datasetkey,
 occurrence.taxonrank,
 COUNT(*)
FROM
 occurrence
WHERE
 occurrence.basisofrecord = 'PRESERVED_SPECIMEN'
 AND occurrence.phylum = 'Tracheophyta'
GROUP BY
 occurrence.datasetkey,
 occurrence.taxonrank

 The dataset's 10053 records were derived from 2436 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0051195-250525065834625/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.rpxjwh
title: Occurrence Download

description: A dataset containing 658 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Agalychnis moreletii (Duméril, 1853))",
 "BasisOfRecord is one of (Specimen, Human Observation, Observation, Machine Observation)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 658 records from 30 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0057139-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.2pc4wp
title: Occurrence Download

description: A dataset containing 153046 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Fratercula arctica (Linnaeus, 1758)"
 ]
}

 The dataset includes 153046 records from 300 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0002705-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.6kdmcv
title: Occurrence Download

description: A dataset containing 3746 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Aves",
 "DecimalLatitude is greater than or equal to 18.4079166663923",
 "DecimalLatitude is less than or equal to 18.5644858128268",
 "DecimalLongitude is greater than or equal to -71.8069417317439",
 "DecimalLongitude is less than or equal to -71.508058268813",
 "BasisOfRecord is Human Observation"
 ]
}

 The dataset includes 3746 records from 4 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0204172-240321170329656/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.5ynjk7
title: Occurrence Download

description: A dataset containing 1301 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Carex buxbaumii Wahlenb.",
 "BasisOfRecord is one of (Specimen)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "Country is one of (United States of America, Canada)"
 ]
}

 The dataset includes 1301 records from 61 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0269439-210914110416597/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.hr6q2h
title: Occurrence Download

description: A dataset containing 6557 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Puschkinia scilloides Adams",
 "HasCoordinate is true",
 "Year is greater than or equal to 1900",
 "BasisOfRecord is one of (Human Observation, Specimen, Unknown evidence)"
 ]
}

 The dataset includes 6557 records from 62 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0057145-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.snkjvs
title: Occurrence Download

description: A dataset containing 213168 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is United States of America",
 "OccurrenceStatus is Present",
 "TaxonKey is Asclepias L."
 ]
}

 The dataset includes 213168 records from 224 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0005366-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.uvrjm4
title: Occurrence Download

description: A dataset containing 346 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Microcebus griseorufus Kollman, 1910"
 ]
}

 The dataset includes 346 records from 7 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0354195-210914110416597/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.ynn5ve
title: Occurrence Download

description: A dataset containing 128 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Ramphotyphlops depressus Peters, 1880)",
 "BasisOfRecord is one of (Specimen, Human Observation, Observation, Machine Observation)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 128 records from 7 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0057160-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.hwsx9h
title: Occurrence Download

description: A dataset containing 46 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Acmispon subpinnatus (Lag.) D.D.Sokoloff",
 "HasCoordinate is true"
 ]
}

 The dataset includes 46 records from 17 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0070059-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.