cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.30366148
title: Data supporting Conservation relevant fine-scale distribution and habitat associations of threatened elasmobranchs in temperate nearshore waters

description: Elasmobranchs are globally threatened and experiencing ongoing declines. Understanding threatened elasmobranch distribution is critical for developing effective marine conservation strategies. However, our knowledge of fine scale elasmobranch habitat association and distribution in temperate nearshore systems is limited. Here, we examined the presence, relative abundance and habitat association of sharks, skates and rays using benthic baited remote underwater stereo-video systems (SBRUVs). From 772 deployments (682 total hours, 53 minutes average soak time) across three years (2021-2023) and two Scottish sea lochs and adjacent bays, elasmobranchs were detected on 31.2% of deployments (n = 241). Our surveys detected six species of elasmobranchs, flapper skate (<i>Dipturus intermedius</i>), thornback ray (<i>Raja clavata</i>), spotted ray (<i>Raja montagui</i>), lesser spotted dogfish (<i>Scyliorhinus canicula</i>), spiny dogfish (<i>Squalus acanthias</i>) and porbeagle (<i>Lamna nasus</i>) representing 17.6% of the resident elasmobranch diversity reported to date in UK nearshore waters &lt; 200 m depth. The species detected include two species listed as globally Vulnerable on the IUCN Red List, spiny dogfish and porbeagle and one Critically Endangered species, flapper skate. Critically Endangered flapper skate were detected in 5.2% deployments (n = 40) and were the only species recorded which did not show a relationship between the probability of presence and substratum type. Our findings provide critical data on the fine scale spatial distribution and substrate associations of elasmobranchs, which could be used to inform evidence-based conservation measures and support more consistent and targeted policy action for these species in Scotland.
DOI: 10.6084/m9.figshare.30366148.v1
title: Data supporting Conservation relevant fine-scale distribution and habitat associations of threatened elasmobranchs in temperate nearshore waters

description: Elasmobranchs are globally threatened and experiencing ongoing declines. Understanding threatened elasmobranch distribution is critical for developing effective marine conservation strategies. However, our knowledge of fine scale elasmobranch habitat association and distribution in temperate nearshore systems is limited. Here, we examined the presence, relative abundance and habitat association of sharks, skates and rays using benthic baited remote underwater stereo-video systems (SBRUVs). From 772 deployments (682 total hours, 53 minutes average soak time) across three years (2021-2023) and two Scottish sea lochs and adjacent bays, elasmobranchs were detected on 31.2% of deployments (n = 241). Our surveys detected six species of elasmobranchs, flapper skate (<i>Dipturus intermedius</i>), thornback ray (<i>Raja clavata</i>), spotted ray (<i>Raja montagui</i>), lesser spotted dogfish (<i>Scyliorhinus canicula</i>), spiny dogfish (<i>Squalus acanthias</i>) and porbeagle (<i>Lamna nasus</i>) representing 17.6% of the resident elasmobranch diversity reported to date in UK nearshore waters &lt; 200 m depth. The species detected include two species listed as globally Vulnerable on the IUCN Red List, spiny dogfish and porbeagle and one Critically Endangered species, flapper skate. Critically Endangered flapper skate were detected in 5.2% deployments (n = 40) and were the only species recorded which did not show a relationship between the probability of presence and substratum type. Our findings provide critical data on the fine scale spatial distribution and substrate associations of elasmobranchs, which could be used to inform evidence-based conservation measures and support more consistent and targeted policy action for these species in Scotland.
DOI: 10.25921/v9p1-y378
title: NOAA/WDS Paleoclimatology - Krusic - Mount Smolikas EHS04 - PIHE - ITRDB GREE016

description: We present a June-July drought reconstruction based on the standardized precipitation index (SPI) for the Balkan Peninsula over the period 730-2015 CE. The reconstruction is developed using a composite Pinus heldreichii tree-ring width chronology, from a high-elevation network of eight sites in the Pindus Mountains in northwest Greece, composed of living trees and relict wood. The dataset includes the ring width series of Europe's currently oldest known living tree, dendrochronologically dated to be more than 1075 years old. The spatial coverage of the reconstruction is improved by using an averaged gridded SPI data target derived from a response field that is located north of the study region. Justification for this approach includes the remoteness of instrumental data, the spatial variability of precipitation and synoptic scale circulation patterns. Over the past 1286 years, there have been 51 dry and 43 pluvial events. The driest year during the 1286-year-long period was 1660 and the wettest year was 1482. Comparison with shorter reconstructions and documentary evidence validates the new reconstruction, and provides additional insight into socioeconomic impacts and spatial patterns of extreme events. Fifty-nine of 72 previously undescribed extremes occurred prior to the 17th century. The new reconstruction reveals long-term changes in the number of extremes, including substantially fewer drought and pluvial events in the 20th century. Additional tests on the long-term effects of age structure, replication and covariance changes support the heteroscedastic nature of the reconstructed hydro-climatic extremes.
description: NOAA Template Raw Measurements file added 2019-02-05.
DOI: 10.25921/v5fm-k572
title: NOAA/WDS Paleoclimatology - Johnson fire data from La Junta North, northern New Mexico - IMPD USLJN001

description: Tree-ring fire scars, tree ages, historical photographs, and historical surveys demonstrate that fire played different ecological roles for centuries across gradients of elevation, forest, and fire regime in the Taos Valley Watersheds. Fire regimes collapsed across these three adjoining watersheds by 1899, leaving all sites without fire for at least 119 years. Historical photographs and quaking aspen (Populus tremuloides Michx.) ages indicate that high-severity fire historically burned at multiple high-elevation subalpine sites in today’s Village of Taos Ski Valley, with large high-severity patches (> 640 ha). Low-severity, frequent (9 – 29 year median interval) surface fires burned in nearby mid-elevation dry conifer forests on south aspects in all watersheds. Fires were associated with drought during the fire year, preceded by wet years, with widespread fires commonly burning synchronously in multiple watersheds during more-severe drought years, including within all three watersheds in 1664, 1715, and 1842. In contrast, recent “large” wildfires have burned within single watersheds and therefore are likely not large in a historical context. Management to promote repeated low-severity fire and associated open forest stand structures is within the historical range of variability in the dry conifer forests of these watersheds, but in the high-elevation, subalpine forests different management approaches are required that balance ecological and socio-economic values while providing for public safety.
description: This site was sampled as part of a project to reconstruct the fire history of the Taos Valley Watersheds in northern New Mexico. File https://www.ncei.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/supplemental/usljn001_tree_meta.csv contains individual tree locations and tree species. The site was located on Taos Pueblo.
DOI: 10.25921/vams-4e79
title: NOAA/WDS Paleoclimatology - Appleton - Pinnacle - TSME - ITRDB OR103

description: Snow dominates the hydrology and climate of the United States' central Pacific Coast, but because local measurements of snowpack and winter precipitation often extend back only a few decades, observations by themselves are not adequate to describe potential amplitude of wintertime conditions. Here we present a set of updated and extended mountain hemlock (Tsuga mertensiana [Bong.] Carr.) tree-ring width records from Crater Lake National Park, Oregon, and use these data to make inferences about snowpack prior to the start of instrumental monitoring. In July and August 2013, we collected cores from 228 trees at seven high-elevation hemlock stands that surround the crater's rim. The oldest tree had an inner ring date of A.D. 1474, and the longest ring-width chronology maintained a satisfactory common signal back to the middle of the 16th century. The growth of high-elevation mountain hemlock is strongly and inversely related to cool-season precipitation, making these records some of the most southerly examples of a robust inverse cool-season moisture signal in North American tree rings. The growth of these snow-limited forests does not appear to have been affected by the substantial decline in spring snowpack observed in the past two decades across the broader Cascade Range, and we did not find any indication of changing relationships between tree growth and either monthly or seasonal winter precipitation since the early 1990s. The exceptional three-year sequence in Crater Lake tree rings between A.D. 1809 and 1811, which includes the narrowest ring since A.D. 1540 and anatomical abnormalities produced by cold weather, leads us to conclude that 1809-1810 was the most snowy and severe winter to affect south-central Oregon during the past four and a half centuries.
description: NOAA Template Raw Measurements file added 2019-02-08.
DOI: 10.25921/v6hr-bf58
title: NOAA/WDS Paleoclimatology - Patriot Hills, West Antarctica Late Glacial Blue Ice Biomarker Data

description: The Southern Ocean occupies 14% of the Earth's surface and plays a fundamental role in the global carbon cycle and climate. It provides a direct connection to the deep ocean carbon reservoir through biogeochemical processes that include surface primary productivity, remineralization at depth and the upwelling of carbon-rich water masses. However, the role of these different processes in modulating past and future air-sea carbon flux remains poorly understood. A key period in this regard is the Antarctic Cold Reversal (ACR, 14.6-12.7 kyr bp), when mid- to high-latitude Southern Hemisphere cooling coincided with a sustained plateau in the global deglacial increase in atmospheric CO2. Here we reconstruct high-latitude Southern Ocean surface productivity from marine-derived aerosols captured in a highly resolved horizontal ice core. Our multiproxy reconstruction reveals a sustained signal of enhanced marine productivity across the ACR. Transient climate modelling indicates this period coincided with maximum seasonal variability in sea-ice extent, implying that sea-ice biological feedbacks enhanced CO2 sequestration and created a substantial regional marine carbon sink, which contributed to the plateau in CO2 during the ACR. Our results highlight the role Antarctic sea ice plays in controlling global CO2, and demonstrate the need to incorporate such feedbacks into climate-carbon models.
description: Fluorescent organic matter measured on the Patriot Hills, West Antarctica blue ice horizontal ice core, for the interval 24,000 - 11,000 years before present.
DOI: 10.5281/zenodo.17360947
title: Tox Free projects - datasets of work package 3 for D3.2

description: Datasets which include the raw data for the datasets shown in deliverables D3.2 from WP3 in the Tox Free project
DOI: 10.15468/dl.7z7yzn
title: Occurrence Download

description: A dataset containing 3752 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Geometry POLYGON((-77.3399 3.63687,-78.28494 3.08061,-78.78736 2.52436,-78.18325 1.70493,-77.49541 2.07577,-77.13654 2.64398,-76.99897 2.88921,-76.93318 3.22416,-76.80757 3.60098,-76.74178 3.93593,-76.95112 4.10341,-77.32794 3.9778,-77.3399 3.63687))",
 "TaxonKey is Amphibia"
 ]
}

 The dataset includes 3752 records from 42 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0024609-251009101135966/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25921/vshg-pm38
title: NOAA/WDS Paleoclimatology - Sauchyn - Emerald Lake Crowsnest Pass 2 - PIFL - ITRDB CANA574

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: Upper Missouri River Basin Streamflow project NOAA Template Raw Measurements file added 2020-01-15.
DOI: 10.15468/dl.n3arfk
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Scaphopoda)",
 "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((30 -70,40 -70,40 -60,30 -60,30 -70))"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0024611-251009101135966/datasets/export for details.
DOI: 10.25921/v2gs-f351
title: NOAA/WDS Paleoclimatology - Pederson - Numa Ridge Falls - PSME - ITRDB MT168

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: Upper Missouri River Basin Streamflow project NOAA Template Raw Measurements file added 2020-01-15.
DOI: 10.15468/dl.6wdv5r
title: Occurrence Download

description: A dataset containing 1 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Lamprotornis regius",
 "Country is United Arab Emirates",
 "HasCoordinate is true"
 ]
}

 The dataset includes 1 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0024608-251009101135966/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25921/vnx2-h462
title: NOAA/WDS Paleoclimatology - Bengal Fan 19 Million Year Buried Wood Fragment Data

description: The Ganges-Brahmaputra (G-B) River system transports over a billion tons of sediment every year from the Himalayan Mountains to the Bay of Bengal and has built the world's largest active sedimentary deposit, the Bengal Fan. High sedimentation rates drive exceptional organic matter preservation that represents a long-term sink for atmospheric CO2. While much attention has been paid to organic-rich fine sediments, coarse sediments have generally been overlooked as a locus of organic carbon (OC) burial. However, International Ocean Discovery Program Expedition 354 recently discovered abundant woody debris (millimeter- to centimeter-sized fragments) preserved within the coarse sediment layers of turbidite beds recovered from 6 marine drill sites along a transect across the Bengal Fan (~8N, ~3,700-m water depth) with recovery spanning 19 My. Analysis of bulk wood and lignin finds mostly lowland origins of wood delivered episodically. In the last 5 My, export included C4 plants, implying that coarse woody, lowland export continued after C4 grassland expansion, albeit in reduced amounts. Substantial export of coarse woody debris in the last 1 My included one wood-rich deposit (~0.05 Ma) that encompassed coniferous wood transported from the headwaters. In coarse layers, we found on average 0.16 weight % OC, which is half the typical biospheric OC content of sediments exported by the modern G-B Rivers. Wood burial estimates are hampered by poor drilling recovery of sands. However, high-magnitude, low-frequency wood export events are shown to be a key mechanism for C burial in turbidites.
description: Wood burial data from 8 Bengal Fan sediment cores, including wood abundance, wood bulk carbon isotopic composition, wood lignin phenolic oxidative products, and wood lignin methoxy hydrogen isotopic composition for the past 19 million years, plus source areas plant transect data.
DOI: 10.5281/zenodo.17360948
title: Tox Free projects - datasets of work package 3 for D3.2

description: Datasets which include the raw data for the datasets shown in deliverables D3.2 from WP3 in the Tox Free project
DOI: 10.25921/v2ha-j607
title: NOAA/WDS Paleoclimatology - Marquardt - Mt. Bigelow 3-needle - PIPO - ITRDB AZ599

description: Rising temperatures and changes in precipitation may affect plant responses, and mountainous regions in particular are sensitive to the impacts of climate change. The Santa Catalina Mountains, near Tucson, Arizona, USA, are among the best known Madrean Sky Islands, which are defined by pine-oak forests. We compared the sensitivity and temporal stability of climate-growth relationships to quantify the growth responses of sympatric taxa of ponderosa pine to changing climate. Three taxa (three-needle, mixed-needle, and five-needle types) collected from southern slopes of two contact zones (Mt. Lemmon, Mt. Bigelow) were evaluated. Positive climate-growth correlations in these semiarid high-elevation pine forests indicated a seasonal shift from summer- to spring-dominant precipitation since 1950, which is a critical time for reproduction. Mixed- and five-needle types responded to winter precipitation, and growth was reduced for the five-needle type when spring conditions were dry. Growth trends in response to temperature and specific to site were observed, which indicated the climate signal can be weakened when data are combined into a single chronology. Significant fluctuations in temperature-growth correlations since 1950 occurred for all needle types. These results demonstrated a dramatic shift in sensitivity of annual tree growth to the seasonality of the limiting factor, and a climatic trend that increases local moisture stress may impact the stability of climate-growth relationships. Moreover, output from temperature-growth analyses based on ring-width data (for example from semiarid sites) that does not account for positive and negative growth trends may be adversely affected, potentially impacting climate reconstructions.
description: Sky Island Pines, Arizona (USA): 3-needle Pinus ponderosa var. brachyptera. NOAA Template Raw Measurements file added 2020-03-09.
DOI: 10.25921/vx1m-mj10
title: NOAA/WDS Paleoclimatology - Fuegian Andes (Southernmost Argentina): Morphometry Data from Glacial Cirques

description: Glacial cirques comprise a distinctive element of relief in alpine landscapes, and their morphometry, distribution and spatial arrangement are generally linked to morphoclimatic factors. This study provides an analysis of morphometric characteristics, floor altitude, aspect and distribution of 251 first-order and 99 'inner' cirques with regard to environmental agents in a selected alpine-type area of the southwestern Fuegian Andes, in Southern Argentina. Parametric variables were extracted and quantified from satellite images and a Digital Elevation Model, and integrated to a Geographical Information System for their systematization and processing. Significant associations were identified between the different geometric and spatial parameters evaluated. Variability in cirque morphometry along the study area suggests that their evolution was regulated to a large degree by glacial dynamics related to Beagle palaeoglacier activity, and by the W-E topographic gradient of the mountain section. The record indicates that most cirques in the Fuegian Andes have undergone allometric enlargement in the three dimensions (i.e., lesser vertical erosion compared to walls' horizontal expansion), with local variations in size and shape controlled by ice residence time, aspect and altitude, whereas geological structure is supposed to have affected cirque formation along the entire mountain chain. Cirque azimuth potentially responds to the combined influence of climate (solar radiation and westerly winds), structure (pervasive faulting and rock bedding) and topography in their development. In particular, dominance of southeasterly aspects is interpreted as a consequence of a relatively cloud-free atmosphere and aridity during past glacial periods in the region, consistently with published evidence. The absence of aspect-related variation in cirque floor altitude is considered to indicate incidence of extensive glaciations in the area (i.e., mostly ice-sheet conditions, with mountain peaks far above the regional equilibrium line altitude or ELA), as well as formation of younger, lower cirques during successive cold periods of different intensity. Occurrence of 'inner' cirques inside larger (preexisting) cirques is thought to reflect a temporary positioning of the ELA just above the floor of the container cirque, permitting short-lived, small cirque-type glaciers to develop along structural bedrock weaknesses.
description: Morphometric characteristics, floor altitude, aspect and distribution of 1,035 first-order and 432 'inner' second-order cirques from the Fuegian Andes, southern Argentina.
DOI: 10.25921/vswa-zt43
title: NOAA/WDS Paleoclimatology - Southern Ocean (ODP 751) Oxygen and Carbon Isotopes from the Early Miocene

description: We present orbital-scale resolution (~10 kyr) benthic foraminiferal d18O and d13C records from the Kerguelen Plateau (Ocean Drilling Program Sites 751 and 747) from 14.5 to 20.0 Ma spanning the Miocene climate optimum (15-17 Ma). Our records fill a critical gap from ~17 to 18 Ma, a time when many other deep-sea records are affected by dissolution. We tested the fidelity of published magnetobiostratigraphic age models for these sites by astronomically tuning to the 405 kyr eccentricity cycle. A comparison of spectral estimates between the untuned and tuned records, as well as coherency with Laskar's (2004) eccentricity solution, revealed quasi-100 kyr cyclicity in d18O and d13C. There is only a weak signal associated with the 41 kyr obliquity cycle, likely due to the 10 kyr sampling limiting resolution. The d18O variations point to persistent 405 and quasi-100 kyr modulations of temperature and sea level changes through the early to middle Miocene as predicted by astronomical solutions, with changing dominance of the 100 and 41 kyr beat. Comparison of d18O records with early to middle Miocene sequences from the New Jersey shelf, northeast Australian margin, Bahamas, and Maldives suggests that the dominant sea level period preserved is the 1.2 Myr obliquity cycle, with sequence boundaries associated with d18O increases or maxima. On the New Jersey margin, higher-order sequences reflect the quasi-100 kyr eccentricity.
description: Provided Keywords: Miocene