Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
152
datasets available to search
ShareScore release 0.7.1
Dataset results
152 results for “High Arctic”
FIGURES 28–30 in A new species of predaceous mite of the genus Neoseiulus Hughes (Acari, Phytoseiidae), with redescriptions of N. magnanalis (Thor) and N. ellesmerei (Chant & Hansell), from Svalbard, High Arctic
FIGURES 28–30. Neoseiulus grumantensis, sp. nov. Male. 28, dorsal shield; 29, ventrianal shield; 30, chelicerae and spermatodactyl.
FIGURES 15–18 in A new species of predaceous mite of the genus Neoseiulus Hughes (Acari, Phytoseiidae), with redescriptions of N. magnanalis (Thor) and N. ellesmerei (Chant & Hansell), from Svalbard, High Arctic
FIGURES 15–18. Neoseiulus grumantensis, sp. nov. Female. 15, dorsal shield; 16, anterior part of dorsal shield; 17, fragment of ventral body surface; 18, caudal part of peritrematal shield.
FIGURE 1 in Terrestrial and Freshwater Invertebrate Fauna of the High Arctic Archipelago of Svalbard
FIGURE 1. Map of the principle islands of the Svalbard archipelago showing the locations of the main research sites, 1) Ny-Ålesund, 2) Longyearbyen, and 3) Hornsund.
Resource-driven colonization by cod in a high Arctic food web
Climate change is commonly associated with many species redistributions and the influence of other factors may be marginalized, especially in the rapidly warming Arctic. The Barents Sea, a high latitude large marine ecosystem in the Northeast Atlantic has experienced above average temperatures since the mid 2000's with divergent bottom temperature trends at sub-regional scales. Concurrently, the Barents Sea stock of Atlantic cod Gadus morhua, one of the most important commercial fish stocks in the world, increased following a large reduction in fishing pressure and expanded north of 80°N. We examined the influence of food availability and temperature on cod expansion using a comprehensive data set on cod stomach fullness stratified by sub-regions characterized by divergent temperature trends. We then tested whether food availability, as indexed by cod stomach fullness, played a role in cod expansion in sub-regions that were warming, cooling or showed no trend. The greatest increase in cod occupancy occurred in three northern sub-regions with contrasting temperature trends. Cod apparently benefited from initial high food availability in these regions that previously had few large-bodied fish predators. The stomach fullness in the northern sub-regions declined rapidly after a few years of high cod abundance, suggesting that the arrival of cod caused a top down effect on the prey base. Prolonged cod residency in the northern Barents Sea is, therefore, not a certainty.
Subspecies and Distribution.. lupus Linnaeus, 1758 — Asia, Europe. ON SSNS. albus Kerr, 1792 — N Russia. 0. arctos Pocock, 1935 — Canadian High Arctic. SS O 0. baileyi Nelson & Goldman, 1929 — Mexico, SW USA (extinct in the wild). OO. communis Dwigubski, 1804 — C Russia. SNS 0. cubanensis Ognev, 1923 — E-C Asia. SN O. dingo Meyer, 1793 — SE Asia and Australasia. 0 NN OOOO. lycaon Schreber, 1775 — SE Canada, NE USA. SNS. nubilus Say, 1823 — E-C Canada and C USA.. occidentalis Richardson, 1829 — Alaska, NW Canada. ~ = C. I. pallipes Sykes, 1831 — Middle East and SW Asia to India. in Canidae
Subspecies and Distribution.. lupus Linnaeus, 1758 — Asia, Europe. ON SSNS. albus Kerr, 1792 — N Russia. 0. arctos Pocock, 1935 — Canadian High Arctic. SS O 0. baileyi Nelson & Goldman, 1929 — Mexico, SW USA (extinct in the wild). OO. communis Dwigubski, 1804 — C Russia. SNS 0. cubanensis Ognev, 1923 — E-C Asia. SN O. dingo Meyer, 1793 — SE Asia and Australasia. 0 NN OOOO. lycaon Schreber, 1775 — SE Canada, NE USA. SNS. nubilus Say, 1823 — E-C Canada and C USA.. occidentalis Richardson, 1829 — Alaska, NW Canada. ~ = C. I. pallipes Sykes, 1831 — Middle East and SW Asia to India.
Subspecies and Distribution. C. lupus Linnaeus, 1758 - Asia, Europe. C. l. albus Kerr, 1792 — N Russia. C. l. arctos Pocock, 1935 — Canadian High Arctic. C. l. baileyi Nelson & Goldman, 1929 — Mexico, SW USA (extinct in the wild). C. l. communis Dwigubski, 1804 — C Russia. C. l. cubanensis Ognev, 1923 — E-C Asia. C. l. dingo Meyer, 1793 — SE Asia and Australasia. C. l. lycaon Schreber, 1775 — SE Canada, NE USA. C. l. nubilus Say, 1823 — E-C Canada and C USA. C. l. occidentalis Richardson, 1829 — Alaska, NW Canada. C. l. pallipes Sykes, 1831 — Middle East and SW Asia to India. in Canidae
Subspecies and Distribution. C. lupus Linnaeus, 1758 - Asia, Europe. C. l. albus Kerr, 1792 — N Russia. C. l. arctos Pocock, 1935 — Canadian High Arctic. C. l. baileyi Nelson & Goldman, 1929 — Mexico, SW USA (extinct in the wild). C. l. communis Dwigubski, 1804 — C Russia. C. l. cubanensis Ognev, 1923 — E-C Asia. C. l. dingo Meyer, 1793 — SE Asia and Australasia. C. l. lycaon Schreber, 1775 — SE Canada, NE USA. C. l. nubilus Say, 1823 — E-C Canada and C USA. C. l. occidentalis Richardson, 1829 — Alaska, NW Canada. C. l. pallipes Sykes, 1831 — Middle East and SW Asia to India.
Warming in the land of the midnight sun: breeding birds may suffer greater heat stress at high- vs low-Arctic sites
<p>Rising global temperatures are expected to increase reproductive costs for wildlife as greater thermoregulatory demands interfere with reproductive activities. However, predicting the temperatures at which reproductive performance is negatively impacted remains a significant hurdle. Using a thermoregulatory polygon approach, we derived a reproductive threshold temperature for an Arctic songbird–the snow bunting (Plectrophenax nivalis). We defined this threshold as the temperature at which individuals must reduce activity to suboptimal levels (i.e., < 4-times basal metabolic rate) to sustain nestling provisioning and avoid overheating. We then compared this threshold to operative temperatures recorded at high (82°N) and low (64°N) Arctic sites to estimate how heat constraints translate into site-specific impacts on sustained activity level. We predict buntings would become behaviourally constrained at operative temperatures above 11.7°C, whereupon they must reduce provisioning rates to avoid overheating. Low Arctic sites had larger fluctuations in solar radiation, consistently producing daily periods when operative temperatures exceeded 11.7°C. However, high-latitude birds faced entire, consecutive days when parents would be unable to sustain required provisioning rates. These data indicate that Arctic warming is likely already disrupting the breeding performance of cold-specialist birds and suggests counterintuitive and severe negative impacts of warming at higher-latitude breeding locations.</p>
Prolonged multi-phase magmatism due to plume-lithosphere interaction as applied to the High Arctic Large Igneous Province
<p>This data set contains parameter files to run the ASPECT models shown in the associated publication in G³, as well as required postprocessing files. A README file in the main folder contains more information on how to use this data set.</p>
Data from: First assessments of trace metal fluxes from the Pacific to the Arctic - high resolution 2021 summer measurements show surprisingly high influence of the Alaskan Coastal Water
<p>Trace metals (manganese, iron, nickel, copper, zinc, and cadmium) are essential micronutrients for phytoplankton and can be used as tracers of oceanic processes. The supply of trace metals to the Western Arctic was thought to be dominated by macronutrient-rich Pacific waters entering through the Bering Strait and modified by uptake and regeneration on the Chukchi Shelf. However, the first high resolution (~6km) trace metal measurements in the strait (July 2021) show large variability in trace metal concentrations across the strait and a close relationship with salinity. The previously unsampled Alaskan Coastal Water has unexpectedly high trace metal concentrations, while the macronutrient-rich Anadyr Water has surprisingly low trace metal concentrations. We make the first estimates of trace metal flux from the Pacific to the Arctic through the Bering Strait and find they are elevated despite the comparatively small volume transport and, for some metals, exceed the Arctic to Atlantic export.</p>
FIGURES 27–32 in Achnanthidium petuniabuktianum sp. nov. (Achnanthidiaceae, Bacillariophyta), a new representative of the A. pyrenaicum group from Spitsbergen (Svalbard Archipelago, High Arctic)
FIGURES 27–32. Achnanthidium petuniabuktianum sp. nov. Light and scanning electron micrographs. All pictures taken from the type population (BR-4177). 27–28. SEM external views of an entire rapheless valve. 29. SEM internal view of an entire rapheless valve. 30. SEM detail of an external rapheless valve. 31. SEM detail of an internal rapheless valve. 32. SEM view showing a frustule in girdle view. Scale bars always 10 μm, except Figs 30–31 where scale bar is 1 μm.
FIGURES 2–26 in Achnanthidium petuniabuktianum sp. nov. (Achnanthidiaceae, Bacillariophyta), a new representative of the A. pyrenaicum group from Spitsbergen (Svalbard Archipelago, High Arctic)
FIGURES 2–26. Achnanthidium petuniabuktianum sp. nov. Light and scanning electron micrographs. All pictures taken from the type population (BR-4177). 1. LM view of a frustule in girdle view. 3–11. LM views of raphe valves. 12–19. LM views of rapheless valves. 20–22. SEM external views of an entire raphe valve. 23. SEM detail of the distal raphe ending of a raphe valve. 24. SEM detail of the internal raphe valve. 25–26. SEM internal views of an entire raphe valve. Scale bars always 10 μm, except Figs 23–24 where scale bar is 1 μm and Fig. 25 where scale bar is 5 μm.
Data from: High resistance towards herbivore-induced habitat change in a high arctic arthropod community
Mammal herbivores may exert strong impacts on plant communities, and are often key drivers of vegetation composition and diversity. We tested whether such mammal-induced changes to a high Arctic plant community are reflected in the structure of other trophic levels. Specifically, we tested whether substantial vegetation changes following the experimental exclusion of muskoxen (Ovibos moschatus) altered the composition of the arthropod community and the predator-prey interactions therein. Overall, we found no impact of muskox-exclusion on the arthropod community: the diversity and abundance of both arthropod predators (spiders) and of their prey were unaffected by muskox presence, and so was the qualitative and quantitative structure of predator-prey interactions. Hence, high Arctic arthropod communities seem highly resistant towards even large biotic changes in their habitat, which we attribute to the high connectance in the food web.
FIGURE 1 in Nymphodora gen. nov., a new genus of Nannoniscidae Hansen, 1916 (Isopoda, Asellota, Janiroidea) from the high Arctic*
FIGURE 1. Nymphodora fletcheri (Paul & George, 1975) comb. nov., holotype female (USNM No. 143607); A, habitus, dorsal view; B, habitus, lateral view; C, cephalothorax, lateral view. Scale bar: A, B = 1000 µm, C = 500 µm.
FIGURE 3 in Nymphodora gen. nov., a new genus of Nannoniscidae Hansen, 1916 (Isopoda, Asellota, Janiroidea) from the high Arctic*
FIGURE 3. Nymphodora fletcheri (Paul & George, 1975) comb. nov., holotype female (USNM No. 143607); A–C, P5–7; D, Plt ventrally, Plp 2; E, Urp. Scale bar: A–C = 200 µm, D = 500 µm, E = 100 µm.
FIGURE 2 in Nymphodora gen. nov., a new genus of Nannoniscidae Hansen, 1916 (Isopoda, Asellota, Janiroidea) from the high Arctic*
FIGURE 2. Nymphodora fletcheri (Paul & George, 1975) comb. nov., holotype female (USNM No. 143607); A, A1; B, A2; C–F, P1–4. Scale bar: A, B = 100 µm, C–F = 200 µm.
Datasets for 'High Arctic aerosol hygroscopicity at sub- and supersaturated conditions during spring and summer'
<p>For a description of the datasets, please see the readme file included in the zip folder</p>
data for the paper "Seasonal Prediction of Regional Arctic Sea Ice Using the High-Resolution Climate Prediction System CMA-CPSv3"
<p>CMA-CPSv3 data for the paper "Seasonal Prediction of Regional Arctic Sea Ice Using the High-Resolution Climate Prediction System CMA-CPSv3"</p>
Volcanism and carbon cycle perturbations in the High Arctic during the Late Jurassic – Early Cretaceous
<p>Dataset for Vickers, M.L., Jelby, M.E., Śliwińska, K.K., Percival, L.M., Wang, F., Sanei, H., Price, G.D., Ullmann, C.V., Grasby, S.E., Reinhardt, L. and Mather, T.A., 2023. Volcanism and carbon cycle perturbations in the High Arctic during the Late Jurassic–Early Cretaceous. <em>Palaeogeography, Palaeoclimatology, Palaeoecology</em>, <em>613</em>, p.111412.</p>
Nitrous oxide emissions from eroding high-center polygons in an Arctic coastal wetland, 2021.
<p>This data contains nitrous oxide (N<sub>2</sub>O) and carbon dioxide (CO<sub>2</sub>) fluxes from eroding polygon features located in a coastal wetland near Utqiaġvik, Alaska on the Barrow Environmental Observatory (BEO). Static chamber fluxes were measured with a Gasmet GT5000 Terra Fourier transform infrared (FTIR) greenhouse gas analyzer (GGA) and a clear, cylindrical polycarbonate chamber (50 cm height and 20cm diameter) in a closed system at a 1Hz sampling rate. The FTIR GGA is capable of measuring concentrations by scanning the full infrared spectrum and calculating the concentrations of each gas in the sample based on its absorption.Chamber collars were made of PVC (15 cm height and 20 cm diameter) and installed 3 days prior to greenhouse gas measurements at a depth of 10 cm. Fluxes were measured at 30 locations – 10 vegetated replicates and 20 unvegetated soil replicates – whenever weather permitted during July 2021 for a total of 263 measurements. Ancillary measurements included soil temperature, bulk density, thaw depth, soil water content, stable isotope ratios, and carbon to nitrogen (C:N) ratios. Soil water content, soil surface temperature, and thaw depth were measured at the time of each chamber measurement at the flux collar throughout the study period (n = 263). Soil water content was measured with a Fieldscout 300 TDR soil moisture meter. Soil surface temperature was measured with an infrared thermometer. Depth of thaw was measured with a small diameter metal rod. Bulk density was measured from soil samples from the top 15 cm of the soil column, collected at each collar location at the end of the study period, for a total of 30 samples. Soil samples were dried for 24 hours at 60 °C in a drying oven and results expressed as weighed per unit volume. </p> <p>Soil samples from the top 15 cm of the soil column were removed at both vegetated and unvegetated areas near where fluxes were measured using a handheld soil sampling corer (7 cm diameter, 15 cm height) at the end of the experiment. Soil samples consisted of four profiles with three depths for a total of 24 samples. Samples were then separated into 5 cm depth segments (to check relationship with depth) using a band saw, placed in a drying oven at 65 C for 48 hours, then homogenized with a vibratory ball mill. The abundance of <sup>15</sup>N, <sup>13</sup>C, and C:N ratios were measured using a continuous flow isotope ratio mass spectrometer (IRMS, Delta V Advantage, Thermo Fisher Scientific). A laboratory standard (USGS41, L-glutamic acid) was used as a reference material for the calibration of stable carbon and nitrogen measurements. Isotope values are reported in standard δ notation (‰) relative to Vienna PeeDee Belemnite (δ <sup>13</sup>C) and air-N2 (δ <sup>15</sup>N). </p> <p>Files in this repository:</p> <p>This dataset consists of four files: (1) 'chamber_fluxes.csv' contains measurements for individual flux data; (2) 'collar_means.csv' contains measurements averaged per collar location and include discrete bulk density measurements; (3) 'soil_content.csv' contains measurements of carbon content, nitrogen content, and isotope content; and (4) 'metadata.csv' contains a description of column headers and units.</p>
Data from: AFLP markers reveal high clonal diversity and extreme longevity in four arctic-alpine key species
Open the record for dataset details and reuse information.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.