cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.15468/dl.6tk83v
title: Occurrence Download

description: A dataset containing 6397 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Medicago arabica (L.) Huds., Medicago lupulina L., Medicago minima (L.) Bartal., Medicago polymorpha L., Medicago sativa L., Medicago truncatula Gaertn., Melampyrum arvense L., Melica ciliata L., Melica uniflora Retz., Melilotus albus Medik., Melilotus indicus (L.) All., Melilotus officinalis (L.) Lam., Melissa officinalis L., Mentha aquatica L., Mentha arvensis L., Mentha longifolia (L.) L., Mentha pulegium L., Mentha spicata L., Mentha suaveolens Ehrh., Mercurialis annua L., Mercurialis perennis L., Mertensia virginica (L.) Pers. ex Link, Mespilus germanica L., Meum athamanticum Jacq., Miconia crenata (Vahl) Michelang., Microstegium vimineum (Trin.) A.Camus, Milium effusum L., Mirabilis jalapa L., Miscanthus sinensis Andersson, Misopates orontium (L.) Raf., Moehringia trinervia (L.) Clairv., Molinia caerulea (L.) Moench, Montia arvensis Wallr., Morella pensylvanica (Mirb.) Kartesz, Morus alba L., Muscari armeniacum H.J.Veitch, Muscari botryoides (L.) Mill., Muscari neglectum Guss. ex Ten., Myagrum perfoliatum L., Mycelis muralis (L.) Dumort., Myosotis arvensis (L.) Hill, Myosotis discolor Pers., Myosotis laxa (Sam.) Hyl. ex Nordh., Myosotis scorpioides L., Myosotis sylvatica Ehrh. ex Hoffm., Myosurus minimus L., Myrica gale L., Myriophyllum aquaticum (Vell.) Verdc., Myrrhis odorata (L.) Scop., Myrtus communis L., Narcissus poeticus L., Narcissus pseudonarcissus L., Nardus stricta L., Narthecium ossifragum (L.) Huds., Nassella neesiana (Trin. & Rupr.) Barkworth, Nassella trichotoma (Nees) Hack. & Arechav., Nasturtium microphyllum (Boenn. ex Rchb.) Rchb., Nasturtium officinale R.Br., Neottia nidus-avis (L.) Rich., Nepeta cataria L., Nepeta racemosa Lam., Nerium oleander L., Neslia paniculata (L.) Desv., Nicandra physalodes (L.) Gaertn., Nigella damascena L., Noccaea perfoliata (L.) Al-Shehbaz, Nymphaea alba L., Nymphoides peltata (S.G.Gmel.) Kuntze, Oenanthe aquatica (L.) Poir., Oenanthe pimpinelloides L., Oenothera biennis L., Oenothera glazioviana Micheli, Olea europaea L., Olearia argophylla (Labill.) F.Muell., Omphalodes verna Moench)",
 "Country is New Zealand",
 "BasisOfRecord is one of (Human Observation, Observation, Occurrence evidence, Material citation, Living Specimen)",
 "CoordinateUncertaintyInMeters is less than or equal to 10000",
 "HasCoordinate is true"
 ]
}

 The dataset includes 6397 records from 7 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0071054-250525065834625/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.907798
title: Age model for sediment core IN2017_V01-A042-KC14

description: Bulk acid insoluble organic carbon ages from core IN2017_V01-A042-KC14 with calibrated ages shown and their respective depth intervals. Ages were calibrated using Matcal 2.41 and a constant marine reservoir age of 917.5 years.
DOI: 10.1594/pangaea.820644
title: The inorganic carbon system measured and calculated on Cibicidoides wuellerstorfi of sediment core SO213/2_58-1

description: Reconstruction equation: B/Ca = 1.39(D[CO32-]) + 175.5 (R2= 0.87)
DOI: 10.1594/pangaea.935599
title: Compound-specific oxygen and hydrogen isotopes in soils from South Africa and results of the coupled δ2H–δ18O paleohygrometer approach

description: Here we present the data of the study by Strobel et al. (2020; doi:10.1016/j.scitotenv.2020.137045), who analysed topsoil samples from South Africa for their compound-specific hydrogen isotopic composition of leaf wax-derived n-alkanes (δ2Hn-alkane) and oxygen isotopic composition of hemicellulose-derived sugars (δ18Osugar). Apparent fractionation, which is the difference between δ2Hn-alkane and the isotopic signature of growing season precipitation δ2Hp (εapp 2H) and δ18Osugar and δ18Op (εapp 18O), was calculated. Coupling both δ2Hn-alkane and δ18O sugar using a 'paleohygrometer' approach enables the calculation of the plants-source water and relative humidity. For more details see Strobel et al. (2020; doi:10.1016/j.scitotenv.2020.137045).
DOI: 10.1594/pangaea.81502
title: (Table 2) Age model of sediment core PS2058-1
DOI: 10.1594/pangaea.893777
title: Age determination of sediment core UMA, Ümarjärv, Estonia

description: This dataset was archived on 2018-09-10 from the EPD database. (http://www.europeanpollendatabase.net).
DOI: 10.1594/pangaea.186176
title: Radiocarbon age determinations on sediment core GIK12393-1
DOI: 10.1594/pangaea.186405
title: Radiocarbon age determinations on sediment core M8_058-2
DOI: 10.1594/pangaea.186173
title: Radiocarbon age determinations on sediment core GIK12329-4
DOI: 10.1594/pangaea.782712
title: (Table 2) Results of U-Th disequilibrium studies
DOI: 10.1594/pangaea.438903
title: Age determination of sediment profile 75KS79
DOI: 10.1594/pangaea.722589
title: (Table DR2) Radiocarbon data for ODP Hole 167-1019C
DOI: 10.1594/pangaea.856826
title: Organic geochemistry, stable oxygen isotope record and Re and Mo concentrations in sediment core KT94-15_PC-9
DOI: 10.1594/pangaea.141137
title: Carbon14 ages of surface sediment samples from ther Persian Gulf

description: A simplified classification of the Holocene sediments based on textures and grain type results in fourteen major units, twelve of which are essentially carbonate in composition. A brief description and photographic illustration of these units, together with the sedimentary and diagenetic processes which have contributed to their formation, is designed to give the reader a broad but valid impression of Persian Gulf sediments.The distribution of the fourteen sediment units throughout the Arabian parts of the basin, although complicated by numerous local bathymetric highs and depressions, is relatively simple. Because the Arabian sea floor slopes progressively from a windward shoreline to the basin center there is increasing protection from wave action towards the center of the basin. As a result sediments grade from skeletal, oolitic and pelletoidal sands (and muds in coastal lagoons) and fringing reefs, through an irregular zone of compound grain sands,into widespread skeletal muddy sands, and finally into basin center muds. These simple relationships vary laterally around the Arabian side of the gulf. Lateral variation is dependant upon orientation of the regional slope with respect to the prevailing NW wind-driven waves, angle of slope, and presence or absence of regional, structurally based barriers.
description: Supplement to: Wagner, C W; van der Togt, C (1973): Holocene sediment types and their distribution in the Southern Persian Gulf. In: Purser, B H; The Persian Gulf, Holocene carbonate sedimentation and diagenesis in a shallow epicontiental sea. Springer-Verlag, Berlin, 123-155
DOI: 10.1594/pangaea.186275
title: Radiocarbon age determinations on sediment core V23-86
DOI: 10.1594/pangaea.186263
title: Radiocarbon age determinations on sediment core V22-225
DOI: 10.1594/pangaea.712752
title: Age determination of sediment core POS158/1_0020/2
DOI: 10.1594/pangaea.846742
title: (Table 1) Age determination of sediment core PC17

description: We have investigated glacial-interglacial differences in sea surface temperature (SST) near Hawaii using two relatively high deposition rate, shallow-water piston cores collected near Oahu, Hawaii. Modern hydrographic data show that local surface water temperatures are broadly consistent with the regional pattern of SSTs in the southern subtropical North Pacific. Past SSTs were estimated on the basis of three independently measured parameters: (1) UK'37 values of alkenones, (2) d18O of Globigerinoides ruber, and (3) assemblages of planktonic foraminifera using the modern analog technique (MAT). The two cores yield similar SST records, and if differences in the ecology of foraminifera and coccolithophores are considered, the three different approaches to estimating SSTs yield consistent results. UK'37-based temperatures, which may represent winter values at this location, were ~2.5°C colder during the Last Glacial Maximum than today, which is consistent with the February MAT estimates. The d18O-based temperature estimates, likely biased toward summer temperatures, indicate that the glacial SSTs were at least 1°C cooler than today, which is comparable to the results of MAT August estimates.
description: Supplement to: Lee, Kyung Eun; Slowey, Niall C; Herbert, Timothy D (2001): Glacial sea surface temperatures in the subtropical North Pacific: A comparison of UK'37, d18O, and foraminiferal assemblage temperature estimates. Paleoceanography, 16(3), 268-279
DOI: 10.1594/pangaea.186417
title: Radiocarbon age determinations on sediment core MG60-11
DOI: 10.1594/pangaea.186284
title: Radiocarbon age determinations on sediment core V26-177
DOI: 10.1594/pangaea.729705
title: (Table 1) Age determination of sediment core PS66/309-1
DOI: 10.1594/pangaea.869448
title: (Table S) Planktonic foraminifera I/Ca during the PETM

description: As yet no evidence has been presented for pervasive deoxygenation in the upper water column through expansion of Oxygen Minimum Zones (OMZs) during the PETM. We apply a novel proxy for paleo-redox conditions, the iodine to calcium ratio (I/Ca) in bulk coarse fraction sediment and planktonic foraminiferal tests from pelagic sites in different oceans, and compared our reconstruction with modeled oxygen levels. The reconstructed iodate gradients indicate that deoxygenation occurred in the upper water column in the Atlantic, Indian Oceans, and possibly the Pacific Ocean as well during the PETM, due to vertical and potentially lateral expansion of OMZs.
description: measured by ICP-MS in Syracuse University during 2012-2014
description: Supplement to: Zhou, Xiaoli; Thomas, Ellen; Rickaby, Rosalind E M; Winguth, Arne M E; Lu, Zunli (2014): I/Ca evidence for upper ocean deoxygenation during the PETM. Paleoceanography, 29(10), 964-975
DOI: 10.1594/pangaea.895323
title: Age determination profile NMK II, Lough Namackanbeg, Spiddal, Co. Galway
DOI: 10.1594/pangaea.892664
title: Age determination of short monoliths (FRK III and FRK IV) blanket bog at Connemara National Park, Letterfrack, Co. Galway, Ireland
DOI: 10.1594/pangaea.407595
title: _Age determination of sediment core KET82-16
DOI: 10.1594/pangaea.407608
title: Age determination of sediment core MD84-639
DOI: 10.1594/pangaea.389054
title: (Table 1) Age determinations on ODP Hole 119-740A
DOI: 10.1594/pangaea.407606
title: Age determination of sediment core KET80-03
DOI: 10.1594/pangaea.407583
title: Age determination of sediment core IN68-16

description: No corrections have been made for reservoir age.
DOI: 10.1594/pangaea.917971
title: Age determination of profile BHY_IV

description: The sampling site lies ca. 20 m N of Behy court tomb where an intact area of uncut peat remains.A monolith 39 cm long was removed. Total depth of peat (adjusted for shrinkage) at sampling point (TDP) 120 cm.The pollen spectra (15 in all) start at 0 cm (i.e. 0–1 cm: mineral soil immediately beneath the peat) to -39 cm. Peat near the base (-3.5 to -9 cm) was charcoal-rich. The age/depth model gives the following chronology: [≥2400, pre-bog development]; pollen profile: 2400 BC–AD 20, i.e. early Bronze Age to mid/late Iron Age.LOI and tephra investigations were also carried out. A distinct tephra layer at -24 cm (ca. 360 BC). The results of the tephra investigations have yet to be published.There are three 14C dates, two of which are from near the base and so the lower part is chronologically is well constrained.The age/depth curve is a smooth spline curve (smooth factor = 0.1) that is based on the three available 14C dates. This is the age/depth model used in the EGQSJ publication (in press, 2019).A 'pine flush' is not recorded. Sharp Betula to Poaceae switch near base. Above that high P. lanceolata coinciding with charcoal-rich peat.These investigations relating to Céide Fields were carried out in PRU, NUIG, part-funded by The Heritage Council (of Ireland). The aim was to provide an environmental context for the establishment and use of the prehistoric stone-wall field system, and an overall chronological framework and an environmental history of the area.
DOI: 10.1594/pangaea.407593
title: _Age determination of sediment core KC82-26
DOI: 10.1594/pangaea.931964
title: B/Ca ratios of Cibicidoides of PS75/104-1

description: Here we show the downcore LGM to Holocene carbonate system of intermediate water sediment record PS75/104-1 offshore New Zealand. We measured foraminiferal B/Ca ratios via laser ablation-inductively coupled-mass spectrometry (LA-ICP-MS) and used the calibration of Yu et al. (2013) for Cibicidoides wuellerstorfi and Ronge et al. (under review) for C. dispars. Measurements were conducted at the GEOMAR in Kiel in 2013.
DOI: 10.1594/pangaea.933194
title: Planktic foraminifer radiocarbon ages for NGHP-01 Site 16
DOI: 10.1594/pangaea.931961
title: B/Ca and carbonate ion concentrations of South Pacific Cibicidoides dispars

description: Here we show surface sediment samples from ten locations from the Pacific Sector of the Southern Ocean (~44°S-48°S; ~174°E-116°W). We measured foraminiferal B/Ca ratios via laser ablation-inductively coupled-mass spectrometry (LA-ICP-MS) on Cibicidoides dispars, a species that is abundant in most samples of the Pacific sector of the Southern Ocean. Measurements were conducted at the GEOMAR in Kiel in 2013.
DOI: 10.1594/pangaea.937417
title: δ18O of Globigerinoides ruber white from sediment cores of METEOR Cruise M75/3
DOI: 10.1594/pangaea.930316
title: Coarse fraction and planktic stable isotope data from sediment core PS93/031-5 (NW Fram Strait)

description: The coarse fraction content and the oxygen and carbon isotopic compositions of two morphotyes of planktic foraminifers Neogloboquadrina pachyderma were determined from sediment samples obtained from sediment core PS93/031-5. The age model is based on 9 radiocarbon datings obtained on ~2000 specimens of N. pachyderma each.Grain size measurements occurred in May-July 2017. Stable isotope measurements were performed in August 2018 to February 2019. According to radiocarbon datings (https://doi.pangaea.de/10.1594/PANGAEA.930416) converted to calibrated years with the program Calib 8.2 (http://calib.org/calib/), using the IntCal20 data set and applying a reservoir correction of 550 years), the core covers the interval of 3,750-23,230 years before present, with the hiatus covering the interval 12,660-18,550 years.Sediment core PS93/031-5 was obtained during RV POLARSTERN expedition PS93.1 in the northwestern Fram Strait on the Northeast Greenland continental margin from 2,135 m water depth.The data were collected to reconstruct the Late Quaternary paleoenvironment in the northwestern Fram Strait, the glacial history of the northeast Greenland shelf, and the export of freshwater from the Arctic to the North Atlantic in the last ca. 21,000 years.Sediment slices of approx. 5 mm thickness were taken from sediment core PS93/031-5 every 0.5 cm (~30 g dry sediment per sample). Sediments were freeze-dried, weighed, and washed with deionized water through a 63 µm mesh. The remaining coarse fraction was dried at 50°C and weighed. Coarse fraction percentages were calculated as [coarse fraction weight] * 100 / [dry bulk weight].Planktic foraminifers Neogloboquadrina pachyderma were hand-picked from the 100-250 µm fraction for stable isotope measurements. 25 specimens of morphotypes 1 and 2 as well as 40 specimens of morphotypes 4 and 5 (following the morphotype concept of Eynaud, 2011) were analyzed separately for stable oxygen and carbon isotope compositions (δ18O, δ13C) in the stable isotope lab of AWI on a Finnigan MAT 253 gas mass spectrometer coupled to the automatic carbonate preparation device Kiel IV. The mass spectrometer was calibrated via international standard NBS19 to the PDB scale. Results are given in δ-notation vs. VPDB. Details on ice volume effect corrections and calculations of differences to oxygen isotope values of equilibrium calcite (δ18Oec) are given in Spielhagen and Mackensen (under review).
DOI: 10.1594/pangaea.91165
title: (Table 2) Age determinations on sediment core PS2163-1

description: Dated material Neogloboquadrina pachyderma, Lab Aarhus, reserv. corr. -550
DOI: 10.1594/pangaea.938678
title: Uranium-Thorium dating results of speleothems from Angelica Cave (central Brazil)

description: Here we present a speleothem oxygen isotope (δ18O) and carbon isotope (δ13C) record from Angelica Cave in central Brazil (13.40°S, 46.23°W, ~585 m above sea level). The record is based on three stalagmite samples, AG1, AG2 and AG4. Ages of the samples were constrained by high-precision U-Th disequilibrium dating performed using a Thermo‐Fisher Scientific Neptune Plus multi-collector inductively coupled plasma mass spectrometer (MC-ICP-MS). The three samples have a combined temporal coverage of 0.1-6.8 kyr BP, roughly spanning the mid-to-late Holocene. Stable isotope values were measured using a GasBench coupled to a Delta-V isotope ratio mass spectrometer (IRMS) system. Angelica δ18O and δ13C values display an overall relatively flat trend with time. The Angelica Cave underlies the core of the South Atlantic Convergence zone (SACZ). The δ18O record can therefore be interpreted as proxy for SACZ rainfall intensity. The relatively flat δ18O trend over the past 6.8 kyr BP suggests that SACZ rainfall intensity remained largely invariant during the mid-to-late Holocene, despite the rising South Hemisphere summer insolation and increasing monsoon strength in the core South American Summer Monsoon zone. The Angelica δ18O record also shows no clear expression of abrupt North Atlantic events, such as the Little Ice Age, Medieval Climate Anomaly and Bond Events.
description: δ234U = ([234U/238U]activity – 1)x1000. δ234Uinitial was calculated based on 230Th age (T), i.e., d234Uinitial = d234Umeasured x el234xT. Corrected 230Th ages assume the initial 230Th/232Th atomic ratio o 4.4 2.2 x10-6. Those are the values or a material at secular equilibrium, with the bulk earth 232Th/238U value o 3.8. The errors are arbitrarily assumed to be 50%.The error is 2s error.
DOI: 10.1594/pangaea.186425
title: Radiocarbon age determinations on sediment core MG61-2
DOI: 10.1594/pangaea.936830
title: Radiocarbon ages of sediment core LV18-B, Lago di Vedana, north-eastern Italy
DOI: 10.1594/pangaea.954763
title: Age determination of sediment core LV76-21

description: Eight samples of monospecific planktic foraminifera of Neogloboquadrina pachyderma (sin.) with a weight of 4–6 mg were picked from the &gt;125‐μm size fraction and measured in the Beta Analytic Radiocarbon Dating Laboratory. Conventional accelerator mass spectrometer (AMS) 14C ages were calibrated to calendar ages using Calib 8.20 with the Marine20 calibration curve (Heaton et al., 2020) and the ΔR of 350 ± 40 years according to the reservoir age of the far NW Pacific equal to 900 years (Max et al., 2012). The resultant AMS 14C data along with other time points were used for age model construction.
DOI: 10.1594/pangaea.186305
title: Radiocarbon age determinations on sediment core CH06107-0154PC
DOI: 10.1594/pangaea.186306
title: Radiocarbon age determinations on sediment core A209401-0004PC
DOI: 10.1594/pangaea.422443
title: Age determination of sediment core PG1169
DOI: 10.1594/pangaea.917970
title: Age determination of profile BHY_III

description: The sampling sites BHY III–VI are from within the stone wall field system that is covered by blanket bog. BHY III is from ca. 65 m west of Behy Court Tomb. There was fairly active peat cutting locally, but on a rather small scale prior to time of sampling (1992). There has been turf cutting since, especially immediately to the west of this site.A monolith was removed as follows: 71 cm long (11 cm of mineral soil; 61 cm of overlying peat; total depth of peat, adjusted for shrinkage, at sampling point (TDP): 130 cm].This was taken from long turf bank where there was a wide cutting (ca. 30 m to next bank of turf to the east). At 30 cm from the sampling point, a flat pine timber (1x6 cm; probably a root) partly projected from the base of the turf bank. The wood rested on 10-15 cm of peat and its outer surface was burned. No other pine stumps were noted in the long bank of turf but there are pine stumps in the general area. A few metres to south of sampling location, there is a substantial stone cross-wall of a pre-bog field.The pollen and macrofossil investigations were carried out by Karen Molloy. LOI and tephra investigations were also carried out. BHY III is the only profile of BHY series in which no tephra was recorded.The age/depth curve (obtained using Clam v. 2.2; details are provided) for BHY III is a smooth spline curve (smooth factor = 0.3) that is based on five of the available seven 14C dates. The 14C dates 3360±50 BP (Gd-7147) and 3290±60 BP (Gd-7148) (both relate to peat from -6 to -7 cm) (both dates regarded as unreliable) were not included in the analysis.A distinct 'pine flush' is recorded at the base. The age/depth model indicates that this dates to ca. 2600 BC which, based on other dates relating to pine in the region, is probably at least two centuries too young (O'Connell et al. 2019). A pronounced Betula to Poaceae switch occurs at ca. 1500 BC. These investigations relating to Céide Fields were carried out in PRU, NUIG, part-funded by The Heritage Council (of Ireland). The aim was to provide an environmental context for the establishment and use of the prehistoric stone-wall field system, and an overall chronological framework and an environmental history of the area.
DOI: 10.1594/pangaea.707128
title: 14C age determination on sediment profile bh6069
DOI: 10.1594/pangaea.707131
title: 14C age determination on sediment profile bh6019