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1,337 results for “antarctica”
Synoicum adareanum sampling underwater video March 2011 Palmer Station Antarctica
<p>These 21 video clips document the sampling events for the tunicate <em>Synoicum adareanum</em> in support of a microbiome and biosynthetic gene cluster study. The sampling strategy involved seven sites, including Janus Island, Boneparte Point, Norsel Point, Delaca Island, Laggard Island, Killer Whale Rocks and Litchfield Island, which are all in the Palmer Archipeligo near the US Antarctic base at Palmer Station. At each site, at least three lobes of <em>S. adareanum</em> were collected, resulting in a set of 63 samples for microbiome analysis. Metadata associated with each video clip includes site, date, time, depth and water temperature. An associated pdf file also contains the metadata along with the time the samples were frozen.</p>
Fig. 4. Leucothoe antarctica Pfeffer, 1888 in Revision of Leucothoe (Amphipoda, Crustacea) from the Southern Ocean: a cosmopolitanism concept is vanishing
Fig. 4. Leucothoe antarctica Pfeffer, 1888, neotype ♀ 5mm. P 3-7 = peraeopod 3-7; P 7' = basis of peraeopod 7 enlarged; Ep 1-3 = epimeral plates 1-3; U 1-3 = uropod 1-3; U 1', U 2' = uropods 1, 2 enlarged; T = telson, T' = telson reduced; T'' = tip of telson enlarged.
Fig. 2. Leucothoe antarctica Pfeffer, 1888 in Revision of Leucothoe (Amphipoda, Crustacea) from the Southern Ocean: a cosmopolitanism concept is vanishing
Fig. 2. Leucothoe antarctica Pfeffer, 1888, neotype ♀ 5 mm. Hd = head; A 1, 2 = antennae; Mx 1 = first maxilla; Mx 1' = palp of first maxilla enlarged; Mx 2 = second maxilla; Md = mandible-body; Md' = palp of mandible.
Numerical model output data for publication "Control of the oceanic heat content of the Getz-Dotson Trough, Antarctica, by the Amundsen Sea Low"
<p>Contains MITgcm model output data to reproduce the analyses of the paper "Control of the oceanic heat content of the Getz-Dotson Trough, Antarctica, by the Amundsen Sea Low", by Dotto and co-authors, published in Journal of Geophysical Research-Oceans (doi: 10.1029/2020JC016113). The model simulation is presented and described in Kimura et al. (2017; doi: 10.1002/2017JC012926) and in Dotto et al. (2019; doi: 10.1175/JPO-D-19-0064.s1). See the 'ReadMe.txt' file for a description of the data. </p> <p> </p>
Figure 6 from: Bonello G, Grillo M, Cecchetto M, Giallain M, Granata A, Guglielmo L, Pane L, Schiaparelli S (2020) Distributional records of Ross Sea (Antarctica) planktic Copepoda from bibliographic data and samples curated at the Italian National Antarctic Museum (MNA): checklist of species collected in the Ross Sea sector from 1987 to 1995. ZooKeys 969: 1-22. https://doi.org/10.3897/zookeys.969.52334
Figure 6 Metridia gerlachei (Copepoda, Calanoida; female, MNA-12439) acquired with fluorescence microscopy (Congo Red, 1.5 mg/ml). This species is one of the most adapted species in the Antarctic region and can perform diel vertical migrations that highly influence the surrounding waters in terms of trophic relationships in Terra Nova Bay.
Figure 1 from: Bonello G, Grillo M, Cecchetto M, Giallain M, Granata A, Guglielmo L, Pane L, Schiaparelli S (2020) Distributional records of Ross Sea (Antarctica) planktic Copepoda from bibliographic data and samples curated at the Italian National Antarctic Museum (MNA): checklist of species collected in the Ross Sea sector from 1987 to 1995. ZooKeys 969: 1-22. https://doi.org/10.3897/zookeys.969.52334
Figure 1 Sampling stations for IIIrd (yellow), Vth (blue), and Xth (red) expedition a overview of spatial extent in Antarctica b sampling stations in the Western Ross Sea c focus on Terra Nova Bay sampling stations. This map was produced using the collection of datasets "Quantarctica" (Matsuoka et al. 2017) and QGIS (QGIS Development Team 2020).
Figure 5 from: Bonello G, Grillo M, Cecchetto M, Giallain M, Granata A, Guglielmo L, Pane L, Schiaparelli S (2020) Distributional records of Ross Sea (Antarctica) planktic Copepoda from bibliographic data and samples curated at the Italian National Antarctic Museum (MNA): checklist of species collected in the Ross Sea sector from 1987 to 1995. ZooKeys 969: 1-22. https://doi.org/10.3897/zookeys.969.52334
Figure 5 Paraeuchaeta exigua (Copepoda, Calanoida; female, MNA-12333) acquired with scanning electron microscopy (SEM). This is one of the most common species in the coastal area of Terra Nova Bay. It plays a key role in the neritic trophic chain and highly contributes to the total mesozooplanktic biomass.
Radiation data (2014-2019) at site D17 (Adelie Land, East Antarctica)
<p>This dataset reports raw half-hourly radiative fluxes acquired at site D17 on the marginal slopes of Adelie Land (East Antarctica) and complements another dataset on near-surface meteorological variables including drifting-snow mass fluxes at the same location. The available data have been measured almost continuously since mid February 2014 with a Kipp and Zonen CNR4 net radiometer installed 2 m above ground and include downward/upward shortwave/longwave radiation.</p> <p>Latitude: 66.7°S ; Longitude 139.9°E</p> <p>Date/Time (UTC): Start:2014-02-18 06:00 ; End: 2019-12-07 23:30</p> <p>Elevation 450 m</p> <p>The data files contain the following variables and units:</p> <p>YYYY: year; MM: month; DD: day; hh: hour; mm: minute; SWU: upward shortwave radiation (W m<sup>-2</sup>); SWD: downward shortwave radiation (W m<sup>-2</sup>); LWU: upward longwave radiation (W m<sup>-2</sup>); LWD: downward longwave radiation (W m<sup>-2</sup>); </p>
Hull fouling marine invasive species pose a very low, but plausible, risk of introduction to East Antarctica in climate change scenarios
<p><strong>Aims: </strong>To identify potential hull fouling marine invasive species that could survive in East Antarctica presently and in the future.</p> <p><strong>Location: </strong>Australia's Antarctic continental stations: Davis, Mawson and Casey, East Antarctica; and subantarctic islands: Macquarie Island and Heard and McDonald Islands.</p> <p><strong>Methods: </strong>Our study uses a novel machine-learning algorithm to predict which currently known hull fouling MIS could survive in shallow benthic ecosystems adjacent to Australian Antarctic research stations and subantarctic islands, where ship traffic is present. We used gradient boosted machine learning (XGBoost) with four important environmental variables (sea surface temperature, salinity, nitrate and pH) to develop models of suitable environments for each potentially invasive species. We then used these models to determine if any Australia's three Antarctic research stations and two subantarctic islands could be environmentally suitable for MIS now and under two future climate scenarios.</p> <p><strong>Results: </strong>Most of the species were predicted to be unable to survive at any locations between now and the end of the century, however, four species were identified as potential current threats, and five as threats under future climate change. <em>Asterias amurensis</em> was identified as a potential threat to all locations.</p> <p><strong>Main conclusions: </strong>This study suggests that the risk are very low, but plausible, that known hull fouling species could survive in the shallow benthic habitats near Australia's East Antarctica locations and suggest a precautionary approach is needed by way of surveillance and monitoring in this region, particularly if propagule pressure increases. Whilst some species could survive as adults in the region, their ability to reach these locations and undergo successful reproduction is considered unlikely based on current knowledge.</p>
FIGURE 10 in Tractolira delli, a new Volutidae (Mollusca: Gastropoda: Neogastropoda) from the abyssal plains off Antarctica
FIGURE 10. Distribution of Tractolira delli new species. Star indicates type locality.
FIGURE 4. AB in Three new species of the genus Oligobregma (Polychaeta, Scalibregmatidae) from the Scotia and Weddell Seas (Antarctica)
FIGURE 4. AB. Oligobregma quadrispinosa sp. nov. A. median parapodium; B. posterior parapodium.
FIGURE 1 in Edotia tangaroa sp. nov. (Crustacea: Isopoda: Idoteidae) from the western Ross Sea, Antarctica
FIGURE 1. Edotia tangaroa sp. nov. female paratype, dorsal and lateral views, original drawings.
FIGURE 1 in Some hydrozoans (Cnidaria) from King George Island, Antarctica
FIGURE 1. Map of study area with the position of sampling stations.
FIGURE 1 in Snailfishes (Family Liparidae) of the Ross Sea, Antarctica, and Closely Adjacent Waters 3285
FIGURE 1. Map of the Ross Sea, showing all collection localities.
A decade (2008-2017) of water stable-isotope composition of precipitation at Concordia Station, East Antarctica
<p>A ten-year record of oxygen and hydrogen isotopic composition of precipitation is here presented: from 2008 to 2017, 1483 daily precipitation samples were collected all-year round on a raised platform at Concordia Station, East Antarctica.</p> <p>The dataset is discussed in the following pubblication</p> <p>Dreossi, G., Masiol, M., Stenni, B., Zannoni, D., Scarchilli, C., Ciardini, V., Casado, M., Landais, A., Werner, M., Cauquoin, A., Casasanta, G., Del Guasta, M., Posocco, V., and Barbante, C.: A decade (2008–2017) of water stable-isotope composition of precipitation at Concordia Station, East Antarctica, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2023-2813, 2023.</p>
Supplementary material 2 from: Zehnpfennig JR, Mahon AR (2023) Austropallene halanychi sp. nov., a new species of sea spider (Pycnogonida, Callipallenidae) from the Ross Sea, Antarctica. ZooKeys 1185: 163-180. https://doi.org/10.3897/zookeys.1185.108286
Mitochondrial gene order of Austropallene halanychi sp. nov.
Figure 45 in Nannastacidae (Crustacea: Cumacea) from eastern Bass Strait, the south-eastern Australian slope, and Antarctica in the collections of Museum Victoria
Figure 45. Procampylaspis poorei sp. nov. female holotype: a, body, lateral view; b, detail of integument of carapace; c, carapace, dorsal view; d, antenna 1; e, maxilliped 2. Scale (in mm): a, 0.5; c, 1; d, e, 0.2.
Figure 46 in Nannastacidae (Crustacea: Cumacea) from eastern Bass Strait, the south-eastern Australian slope, and Antarctica in the collections of Museum Victoria
Figure 46. Procampylaspis poorei sp. nov. female holotype: a, maxilliped 3; b, pereopod 1; c, pereopod 2; d, pereopod 3; e, pereopod 4; f, pereopod 5; g, pleonite 6 and right uropod. Scale (in mm): a–f, 0.5; g, 0.25.
Figure 28 in Nannastacidae (Crustacea: Cumacea) from eastern Bass Strait, the south-eastern Australian slope, and Antarctica in the collections of Museum Victoria
Figure 28. Campylaspis rectangulata sp. nov. female holotype: a, pereopod 2; b, pereopod 3; c, pereopod 4; d, pereopod 5; e, pleonite 6 and left uropod. Scale (in mm): a, 0.5; b–e, 0.25.
Figure 29 in Nannastacidae (Crustacea: Cumacea) from eastern Bass Strait, the south-eastern Australian slope, and Antarctica in the collections of Museum Victoria
Figure 29. Campylaspis sculpta sp. nov. female holotype: a, body, lateral view; b, body, dorsal view; c, antenna 1; d, maxilliped 3; e, pereopod 1. Scale (in mm): a, b, 1; c, 0.5; d, e, 0.5.
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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.