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

description: A dataset containing 32 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is (Table 1) Proportion of Toxoplasma gondii seropositive arctic foxes (Alopex lagopus) by age group and geographic area"
 ]
}

 The dataset includes 32 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001861-180730143533302/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.uvwkeg
title: Occurrence Download

description: A dataset containing 253 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Vitacea polistiformis (Harris, 1854)"
 ]
}

 The dataset includes 253 records from 21 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0239549-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.a5jt8m
title: Occurrence Download

description: A dataset containing 8 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is (Table 1) Proportion of Toxoplasma gondii seropositive arctic foxes (Alopex lagopus) by age group and geographic area"
 ]
}

 The dataset includes 8 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0035173-160910150852091/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.4lqedf
title: Occurrence Download

description: A dataset containing 32 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is (Table 1) Proportion of Toxoplasma gondii seropositive arctic foxes (Alopex lagopus) by age group and geographic area"
 ]
}

 The dataset includes 32 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0000913-181003121212138/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.ryrk8r
title: Occurrence Download

description: A dataset containing 14 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Impatiens leucantha Thwaites"
 ]
}

 The dataset includes 14 records from 10 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0033747-240321170329656/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.7wslrw
title: Occurrence Download

description: A dataset containing 8 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is (Table 1) Proportion of Toxoplasma gondii seropositive arctic foxes (Alopex lagopus) by age group and geographic area"
 ]
}

 The dataset includes 8 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0081057-160910150852091/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.xcrr9d
title: Occurrence Download

description: A dataset containing 1365743070 species occurrences available in GBIF matching the query:
{
 "and" : [
 "BasisOfRecord is Human Observation",
 "OccurrenceStatus is Present"
 ]
}

 The dataset includes 1365743070 records from 10943 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0230523-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.vxwgsw
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Bucerotiformes)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "Year is greater than or equal to 1980",
 "OccurrenceStatus is Present",
 {
 "not" : {
 "BasisOfRecord" : [
 "is one of (Fossil, Living Specimen)"
 ]
 }
 },
 "Geometry POLYGON((-140 80,-130 80,-130 90,-140 90,-140 80))"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0018786-251009101135966/datasets/export for details.
DOI: 10.25921/77wa-6n43
title: NOAA/WDS Paleoclimatology - Northern North Atlantic Holocene Summer Sea-Surface Temperatures Reconstruction

description: Mounting evidence from proxy records suggests that variations in solar activity have played a significant role in triggering past climate changes. However, the mechanisms for Sun-climate linkages remain a topic of debate. Here we present a high-resolution summer sea-surface temperature (SST) record covering the last 9300 yr from a site located at the present-day boundary between Polar and Atlantic surface-water masses. The record is age-constrained via the identification of 15 independently-dated tephra markers from terrestrial archives, circumventing marine reservoir age variability problems. Our results indicate a close link between solar activity and SSTs in the northern North Atlantic during the past 4000 years. They suggest that the climate system in this area is more susceptible to the influence of solar variations during cool periods with less vigorous ocean circulation. Furthermore, the high-resolution SST record indicates that climate in the North Atlantic regions follows solar activity variations on multi-decadal to centennial time scales.
description: A subdecadal (youngest part of record) to multi-decadal (oldest part of record) resolution time series of sea surface temperature (SST) spanning the last 9300 years is reconstructed by using diatom-based transfer function on data from core MD99-2275, north of Iceland. Shifts between cold and warm SST strongly correlated to solar forcing during last 4000 years. Age model based on 15 independantly-dated tephra horizons
Provided Keywords: North Atlantic, North Iceland shelf, Irminger Current
DOI: 10.25921/7bj3-bw64
title: NOAA/WDS Paleoclimatology - Copenheaver - Gibbon's Sugarbush - ACSH - ITRDB NY048

description: The conversion of sap from sugar maple (Acer saccharum) to syrup is a multi-million dollar agroforestry industry in North America. Sugar maple trees take decades to reach a size that can be tapped; therefore, maintaining vigorous trees is crucial to the industry's sustainability. Our objectives were to identify whether syrup production altered radial growth or cambium miner activity. We extracted increment cores and measured ring widths from trees tapped for syrup production and untapped reference trees. In Pennsylvania and Ontario, radial growth in tapped trees was significantly reduced compared to reference trees. In New York, there was no significant difference in radial growth between tapped and reference trees. All sites showed a significant reduction in radial growth following commencement of tapping, compared to growth rates prior to tapping. This pattern was not identified in reference trees, which indicates that it was not an artifact of age-related growth trends. There was no significant difference between cambium miner activity in tapped and reference trees. We concluded that the reduction in sugar maple radial growth is likely due to reallocation of resources as the tree heals the damage to the stem during tapping.
description: NOAA Template Raw Measurements file added 2019-02-08.
DOI: 10.25921/7q0s-5919
title: NOAA/WDS Paleoclimatology - Central California Deglacial Stalagmite Stable Isotope Data

description: The last deglaciation is marked by large and abrupt hydroclimatic changes in the Great Basin and the American Southwest. However, comparatively little is known about how hydroclimate varied on the western side of the Sierra Nevada. We present new evidence for abrupt changes in precipitation amount in the central Sierra Nevada during the last deglaciation. Our new record from McLean's Cave overlaps with a previously published record from nearby Moaning Cave (Oster et al., 2009), and extends the record of hydroclimatic change in the region through Heinrich Stadial 1. McLean's Cave speleothem d18O, d13C, Mg/Ca, and Sr/Ca indicate a shift to drier conditions at the beginning of Heinrich Stadial 1 from 16.1 to 17.5 ka followed by wetter conditions at the end of Heinrich Stadial 1 when the majority of Great Basin lakes reached their deglacial highstands. During the last deglaciation, coincident shifts in the Moaning and McLean's Cave proxy records indicate drier conditions in the western Sierra Nevada during millennial-scale intervals of warming at high latitudes such as the Bölling and Alleröd, and wetter conditions during cooler intervals such as the Older and Younger Dryas. Thus, the Sierra Nevada speleothem records are consistent with other regional records that document increased winter rainfall during millennial-scale cold periods of the last deglaciation. However, regional differences exist in the hydroclimatic response to the Younger Dryas, with central Californian and interior southwestern sites indicating an increase in winter storms that is not apparent in southern California. Dynamic simulations of atmospheric circulation indicate that wetter conditions during the Younger Dryas relative to the Bölling at McLean's Cave may have resulted from a stronger storm track in the north Pacific at the latitude of northern California.
description: Stable isotope (d13C and d18O) data from 2 stalagmites collected in Moaning Cave (MC3) and McLean's Cave (ML1), central California, for the last deglacial interval.
DOI: 10.25921/7cp2-je85
title: NOAA/WDS Paleoclimatology - Pisaric - Hidden Lake Mackenzie Delta - PCGL - ITRDB CANA523

description: We present a reconstruction of June-July minimum temperatures since AD 1245 for the Mackenzie Delta region based on a 29-site network of white spruce (Picea glauca) ring-width series. Most but not all trees experienced a divergent temperature-growth response, similar to the divergence that has affected other white spruce trees across Yukon and Alaska. However, divergence in the study region began as early as AD 1900 and we have documented our methods to avoid including divergent signals in the reconstruction. Calibration/verification testing based on local temperature data, and multi-century coherence with nearby and large-scale temperature proxy records, confirm that our reconstruction is robust. The reconstruction shows cool conditions in the late 13th, early 18th and early 19th centuries, corresponding with solar minima and increased volcanism. These cool periods are interrupted by warm periods consistent with early to mid-20th century warmth. The late 20th century is the warmest interval, and the last decade is estimated to be 1.4C warmer than any decade before the mid-20th century. The reconstructed climate history corroborates other proxy-based inferences and supports the notion that high-latitude regions such as the Mackenzie Delta have experienced rapid warming in recent decades that is exceptional in the last eight centuries.
description: NOAA Template Raw Measurements file added 2019-01-27. NOAA Template Raw Measurements file added 2019-02-04.
DOI: 10.25921/731x-aq39
title: NOAA/WDS Paleoclimatology - Mundo fire data from Río Lácteo, Patagonia - IMPD ARLAC001

description: Fire is a major disturbance affecting forests worldwide with significant economic, social and ecological impacts. The southernmost forests on Earth extend continuously along the Andes from mid- to subantarctic latitudes in South America. In this region, warming and drying trends since the mid-20th century have been linked to a positive trend in the Southern Annual Mode (SAM), the leading mode of extratropical climate variability in the Southern Hemisphere. Due to the scarcity of documentary fire records and the lack of tree-ring fire histories, little is known about how wildfire activity responds to shifts in the westerly circulation pattern and associated climatic variability in the Andean region south of c. 44°S. For the first time, we applied dendrochronological techniques to reconstruct fire history from the angiosperm Nothofagus pumilio at 16 sites distributed from c. 44 to 50oS to determine relationships between fire occurrence and the two primary drivers of wildfire activity: climate variability and human activities. Partial cross-sections with fire-scars were collected from 363 trees in Argentina and Chile. Chronologies of annually resolved fire-scar dates start in 1791 and show a pattern of higher fire frequency during the 20th century, concurrent with the human occupation and colonization processes in southern Patagonia. Years of widespread fire occurring synchronously in two or more disjunct sites are associated with broad-scale climatic anomalies. Intense droughts inferred from extreme departures in temperature, precipitation and the Standardized Precipitation-Evapotranspiration Index (SPEI) during the growing seasons of 1944 and 1962 are consistent with the two most severe fires at northern sites. Extended droughts, reflected by the association of fire occurrence with 6-month cumulative precipitation and SPEI, create conditions for widespread fires at the southern sites (south of c. 46°S). Regional fires were concurrent with significant positive departures of SAM during the austral spring-summer. This tree-ring fire record reveals the influences of both climate variability and human activities on fire in the N. pumilio forests across the Andes, and also establishes the feasibility of using this tree species as a natural archive of fire history.
DOI: 10.15468/dl.hqnjjb
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Galliformes)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "Year is greater than or equal to 1980",
 "OccurrenceStatus is Present",
 {
 "not" : {
 "BasisOfRecord" : [
 "is one of (Fossil, Living Specimen)"
 ]
 }
 },
 "Geometry POLYGON((-160 40,-150 40,-150 50,-160 50,-160 40))"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0025119-251009101135966/datasets/export for details.
DOI: 10.25921/775a-rz50
title: NOAA/WDS Paleoclimatology - Western Tropical Pacific - Palau Archipelago, 1945-2008 CE, Porites lutea Coral D14C Data

description: In order to evaluate the variability in surface water masses in the western Pacific warm pool, we report high-precision radiocarbon measurements in annual and seasonal bands from Porites lutea corals collected from the Palau Archipelago (7°N, 134°E). Annual coral bands from 1945 to 2008 and seasonal samples from 1953 to 1957 were analyzed to capture the initial early input of bomb 14C from surface thermonuclear weapons testing in the Marshall Islands. Results show a pre-bomb average d14C value of –54.9‰ between 1945 and early 1953. Beginning early in 1954, there is a rapid increase to a maximum of –23.1‰ at the start of 1955. Values continued to rise after 1957 to a post-bomb peak of 141‰ by 1976. The large initial rise in d14C cannot be accounted for by air-sea CO2 exchange. Results therefore suggest that the primary cause of this increase is the lateral advection of fallout-contaminated water from the Marshall Islands to Palau via the North Equatorial Current and then to the North Equatorial Countercurrent.
description: Palau coral radiocarbon data from 1945 to 2008 CE, record of thermonuclear weapons testing in the Marshall Islands. Annual samples were collected from coral slabs UC-2-3 (1945-1982) and UC-3-2 (1982-2008) with annual growth varying from 1 to 1.5 cm. Seasonal samples were taken for the years 1953-1957 from slab UC-2-3. Seasonal samples were drilled every 1 mm. Radiocarbon values corrected for known age to 1950 according to convention (Stuiver and Polach 1977). Site depth is 12 m.
DOI: 10.25921/7nvv-3050
title: NOAA/WDS Paleoclimatology - Southern Continental Margin of Australia Benthic Foraminifera Stable Isotope Data, Lynch-Stieglitz 2015

description: Records of past climate and ocean circulation derived from marine sediments. Parameter keywords describe what was measured in this data set.  Additional summary information can be found in the abstracts of papers listed in the data set citations.
description: All measurements are on individual foraminifera, MAT253, Kiel IV individual acid bath. Measurement error of d18O: 0.07 ‰ PDB, measurement error of d13C: 0.04 ‰ PDB.
    Data comes from these South Indian Ocean cores:
 Core Name Lat Lon Depth
 RS67-GC3 -37.55 138.583 1476 m
 RS67-GC13 -38.465 140.167 2525 m
 RS67-GC16 -38.333 140.182 1650 m
 RS67-GC27 -38.648 141.192 506 m
 RS67-GC52	-41.182	143.958	1145 m
 RS78-GC18 -41.385 144.233 814 m
 SO36-SL7 -42.31 144.67 1085 m
 SO36-SL17 -42.05 144.59 1042 m
         Provided Keywords: Australia, benthic foraminifera, isotopes, Last Glacial Maximum
DOI: 10.25921/7c2y-k429
title: NOAA/WDS Paleoclimatology - Grissino-Mayer - Peter's Flat Pinaleno Mountains - PSME - ITRDB AZ549

description: Tree ring data from the International Tree Ring Data Bank and World Data Center for Paleoclimatology archives.  Most data sets include raw treering measurements (most are annual ring width, with some collections of earlywood or latewood width or wood density), plus chronologies (standardized growth indices for a site compiled from multiple treering samples). Reconstructions of climate variables are included with some of these data sets.  Each data type is stored in a separate data file; the data type is coded into the file name. For details please see: http://www.ncdc.noaa.gov/paleo/treeinfo.htmll
description: NOAA Template Chronology file added 2018-12-20. NOAA Template Raw Measurements file added 2019-02-08.
DOI: 10.25921/7qkx-cg92
title: NOAA/WDS Paleoclimatology - Stahle - Lake Arbuckle - QUST - ITRDB OK022

description: Tree ring data from the International Tree Ring Data Bank and World Data Center for Paleoclimatology archives.  Most data sets include raw treering measurements (most are annual ring width, with some collections of earlywood or latewood width or wood density), plus chronologies (standardized growth indices for a site compiled from multiple treering samples). Reconstructions of climate variables are included with some of these data sets.  Each data type is stored in a separate data file; the data type is coded into the file name. For details please see: http://www.ncdc.noaa.gov/paleo/treeinfo.htmll
description: NOAA Template Chronology file added 2018-12-20. NOAA Template Raw Measurements file added 2019-02-08.
DOI: 10.25921/72vd-f053
title: NOAA/WDS Paleoclimatology - Gaire - Sagarmatha National Park - BEUT - ITRDB NEPA054

description: Alpine treelines act as bio-indicators and bio-monitors of environmental change impacts in high elevation forests. This dendro-ecological study carried out in treeline ecotones in the Sagarmatha (Mt. Everest) National Park (SNP), eastern Nepal Himalaya, aimed to assess treeline dynamics and to understand the response of treeline forming Abies spectabilis (D. Don, Mirb) and Betula utilis (D. Don) to environmental change. At three treeline sites we placed two to four belt transects (size: 20 m wide, variable length) which bisected the treeline as well as the tree species limit. The results revealed spatio-temporally heterogeneous regeneration with a higher regeneration of A. spectabilis compared to B. utilis. Warm temperatures during summer (JJA) growing seasons combined with sufficient moisture favored the growth of A. spectabilis while moisture stress during spring seasons (MAM) mainly limited the growth of B. utilis. The regeneration of A. spectabilis was favored by high temperatures throughout the year with sufficient moisture. The climatic response of the regeneration of B. utilis was spatiotemporally different and variable. Results predict a changing community structure in the treeline in response to future environmental change. During the past 200 years, A. spectabilis shifted upward by about 0.93 m/yr and B. utilis by 0.42 m/yr, with stabilization during the second half of the 20th century at the majority of the sites. The recent stability in treeline position of both species at most sites indicated that in addition to favorable climate, species-specific competitive abilities during the recruitment phase, recruitment suppression in the Krummholz and dwarf scrub belts, and grazing determine regeneration success and treeline position in the region.
description: NOAA Template Raw Measurements file added 2019-04-08.
DOI: 10.25921/7g8t-ev79
title: NOAA/WDS Paleoclimatology - Deep-Sea Coral Global Trace Metal Data

description: As paleoceanographic archives, deep sea coral skeletons offer the potential for high temporal resolution and precise absolute dating, but have not been fully investigated for geochemical reconstructions of past ocean conditions. Here we assess the utility of skeletal P/Ca, Ba/Ca and U/Ca in the deep sea coral D. dianthus as proxies of dissolved phosphate (remineralized at shallow depths), dissolved barium (trace element with silicate-type distribution) and carbonate ion concentrations, respectively. Measurements of these proxies in globally distributed D. dianthus specimens show clear dependence on corresponding seawater properties. Linear regression fits of mean coral Element/Ca ratios against seawater properties yield the equations: P/Cacoral (umol/mol) = (0.6 +/- 0.1) P/Casw(umol/mol) - (23 +/- 18), R2 = 0.6, n = 16 and Ba/Cacoral(umol/mol) = (1.4 +/- 0.3) Ba/Casw(umol/mol) + (0 +/- 2), R2 = 0.6, n = 17; no significant relationship is observed between the residuals of each regression and seawater temperature, salinity, pressure, pH or carbonate ion concentrations, suggesting that these variables were not significant secondary dependencies of these proxies. Four D. dianthus specimens growing at locations with Oarag < 0.6 displayed markedly depleted P/Ca compared to the regression based on the remaining samples, a behavior attributed to an undersaturation effect. These corals were excluded from the calibration. Coral U/Ca correlates with seawater carbonate ion: U/Cacoral(umol/mol) = (-0.016 +/- 0.003) [CO32-] (umol/kg) + (3.2 +/- 0.3), R2 = 0.6, n = 17. The residuals of the U/Ca calibration are not significantly related to temperature, salinity, or pressure. Scatter about the linear calibration lines is attributed to imperfect spatial-temporal matches between the selected globally distributed specimens and available water column chemical data, and potentially to unresolved additional effects. The uncertainties of these initial proxy calibration regressions predict that dissolved phosphate could be reconstructed to +/-0.4 umol/kg (for 1.3-1.9 umol/kg phosphate), and dissolved Ba to +/-19 nmol/kg (for 41-82 nmol/kg Basw). Carbonate ion concentration derived from U/Ca has an uncertainty of +/-31umol/kg (for 60-120umol/kg CO32-). The effect of microskeletal variability on P/Ca, Ba/Ca, and U/Ca was also assessed, with emphasis on centers of calcification, Fe-Mn phases, and external contaminants. Overall, the results show strong potential for reconstructing aspects of water mass mixing and biogeochemical processes in intermediate and deep waters using fossil deep-sea corals.
description: Calibration of P/Ca, Ba/Ca, and U/Ca in the deep-sea coral Desmophyllum dianthus. Provided Keywords: coral, deep-sea coral, trace metals, proxy, calibration, paleoceanography