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1,337 results for “antarctica”
FIGURE 1 in Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica)
FIGURE 1. Study area showing the location of stations within the Weddell Sea and South Shetland Islands.
FIGURE 3. a–f in Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica)
FIGURE 3. a–f Hydractinia dendritica: a–b general view of the colony; c detail of spines; d gastrozooids and dactylozooid (arrow); e gonozooid with gonophores; f dactylozooid (arrow). g Eudendrium antarcticum: female gonophore. h Eudendrium generale: female gonophore. i, k Eudendrium scotti: i gonozooid with male gonophores; k colony. j Eudendrium sp.2: gonozooid with male gonophores.
FIGURE 2. a–c in Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica)
FIGURE 2. a–c Bimeria corynopsis: a stem showing branching; b stem showing annulation; c detail of polyp and slightly capitate tentacles. d–e Bougainvillidae undetermined: d polyp; e gonophore. f–i Rhizorhagium antarcticum: f colony shape; g extended (left) and contracted (right) polyps; h shape (left) and developing eggs (right) of female gonophores; i male gonophore. j?Sarsia sp.: polyp.
FIGURE 25. Dendrilla antarctica Topsent, 1905 in Demosponges from the sublittoral and shallow-circalittoral (<24m depth) Antarctic Peninsula with a description of four new species and notes on in situ identification characteristics
FIGURE 25. Dendrilla antarctica Topsent, 1905. BELUM.Mc2015.544. A. In situ appearance. B. Skeleton, scale bar 1000 µm.
Spanish Antarctica campaign 2018/2019 ionosphere sounding dataset Glaciar Rocoso
<p>This data set contains the IQ data files acquired in Glaciar Rocoso during the Spanish Antarctica campaign from 5-2-2019 at 15:04 UTC from, the 9-2-2019 at 23:59 UTC from the founded project by CTM2015-68902-R (MINECO/FEDE). This data are the ionosphere sensing data, the sensing channel is realized by modifying the power transmission, channel BW, and the modulation (from 2QAM to 32QAM, 2PSK to 32PSK and 2FSK to 32FSK).</p> <p> </p>
FIGURES 79–84 in Orthoseira variabilis sp. nov., a new diatom from a snow patch in Potter Cove, King George Island, Antarctica
FIGURES 79–84. Orthoseira variabilis sp. nov. SEM. Girdle elements. Fig. 79. Valvocopula with internal silica thickening attached to valve. Fig. 80. Detached open valvocopula. Fig. 81. Broken frustule in internal view showing valve and attached valvocopula with thickened pars interior and poroids. Fig. 82. Open, ligulate copula. Fig. 83. Detail of a copula showing ligula. Fig. 84. Detail of a copula showing tiny poroids and fimbriae. Scale bar: 10 µm (Figs 79–80, 82), 5 µm (Figs 81, 83), 2 µm (Fig. 84).
FIGURES 85–94 in Orthoseira variabilis sp. nov., a new diatom from a snow patch in Potter Cove, King George Island, Antarctica
FIGURES 85–94. Orthoseira variabilis sp. nov. Figs 85–92. LM. Initial cells. Figs 85–87. Girdle view. Figs 88–92. Valve view. Figs 93–94. SEM. Initial valve. Fig. 93. General view. Fig. 94. Detail of central area of specimen in Fig. 93, rotated; note the numerous and incompletely developed carinoportulae. Figures marked with "=" are the same valves with a different focus. Scale bar: 10 µm (Figs 85–93; scale bar is the same for Figs 85–92), 5 µm (Fig. 94).
FIGURES 61–65 in Orthoseira variabilis sp. nov., a new diatom from a snow patch in Potter Cove, King George Island, Antarctica
FIGURES 61–65. Orthoseira variabilis sp. nov. SEM. Specimens in girdle view. Fig. 61. Valve with pore field (arrow) and raised interstriae on the mantle. Note the collum (white arrowhead) separated from the mantle striae by a smooth area (black arrowhead). Figs 62–65. Whole frustules; note the presence of pore fields, step and collum in the mantle, and the cingulum composed by open, ligulate copulae. Collum (white arrowhead) and smooth area of the mantle (black arrowhead) are also indicated in Fig. 64. Fig. 63 is a detail of Fig. 62, rotated. Scale bar: 10 µm.
FIGURES 2–14 in Orthoseira variabilis sp. nov., a new diatom from a snow patch in Potter Cove, King George Island, Antarctica
FIGURES 2–14. Orthoseira variabilis sp. nov. LM. Frustules in girdle view. Note mantle step (Fig. 7, black arrow) and marginal spines (Fig. 14, white arrowheads). Figures marked with "=" are the same frustules with a different focus. Scale bar: 10 µm (Scale bar is the same for Figs 2–13).
FIGURE 1 in Orthoseira variabilis sp. nov., a new diatom from a snow patch in Potter Cove, King George Island, Antarctica
FIGURE 1. Map of the Antarctic Peninsula and South Shetland Islands (left); map of King George Island/Isla 25 de Mayo, showing the location of Potter Cove (right, top); panoramic view of Potter Cove and sampling site (right, center, arrow); close view of the sampling site (right, bottom, arrow).
FIGURE 1. A in Staurastrum antarcticum: a new desmid species from a lake in Oasis Larsemann Hills (East Antarctica)
FIGURE 1. A) Map of Antarctica indicating the position of the sampling site in Oasis Larsemann Hills: LH-59 lake, B) Photograph of lake LH-59 (indicated by arrow), C) The sample of algobacterial mat.
FIGURE 3 in Staurastrum antarcticum: a new desmid species from a lake in Oasis Larsemann Hills (East Antarctica)
FIGURE 3. Scanning electron micrographs of four cells of Staurastrum antarcticum sp. nov., illustrating the presence of mucilage pores and mucilage plugs (indicated by arrows) on the cell wall. Scale bar = 2 µm.
FIGURE 2 in Staurastrum antarcticum: a new desmid species from a lake in Oasis Larsemann Hills (East Antarctica)
FIGURE 2. Light microscopical images of Staurastrum antarcticum sp. nov., from Oasis Larsemann Hills (Antarctica). A, C) Vegetative cells in frontal view, B, D) Vegetative cells in apical view. Scale bar = 10 µm.
Data Sets for: Trace elements in aerosol from Northwest Pacific marginal sea, Indian Ocean and South Pacific to Antarctica: Spatial variability and source identification
<p>This dataset includes the concentrations of trace elements in aerosols, along with location and time information, collected during a cruise from November 2021 to April 2022. The cruise covered the Pacific, the Indian Ocean, the Southern Ocean.</p>
Pre-LGM Sea Levels within Antarctica
<p>A compilation of pre-LGM sea-level constraints from across Antarctica. Compiled for WALIS (<a href="https://alerovere.github.io/WALIS/">What is WALIS? | The World Atlas of Last Interglacial Shorelines (alerovere.github.io)</a>)</p>
FIGURES 121–141 in The genus Luticola D.G.Mann (Bacillariophyta) from the McMurdo Sound Region, Antarctica, with the description of four new species
FIGURES 121–141. Luticola macknightiae Kohler & Kopalová, sp. nov. Light (LM) and scanning electron micrographs (SEM). 121– 138. Specimens from Wormherder Creek, Taylor Valley, the type population, LM. 139. External valve view of a specimen from Canada Stream, Taylor Valley, SEM. 140. Internal valve view of a specimen from Canada Stream, SEM. 141. Detail of apices from Canada Stream specimen, SEM. LM scale bar = 10 μm. SEM scale bars = 2 μm for inside/outside, 5 μm for detail of external apice.
FIGURES 92–109 in The genus Luticola D.G.Mann (Bacillariophyta) from the McMurdo Sound Region, Antarctica, with the description of four new species
FIGURES 92–109. Luticola spainiae Kohler & Kopalová, sp. nov. Light (LM) and scanning electron micrographs (SEM). 92–107. Specimens from Commonwealth Glacier, Taylor Valley, the type population, LM. 108. External valve view, type population, SEM. 109. Internal valve view, type population, SEM. LM scale bar = 10 μm. SEM scale bars = 5 μm.
FIGURES 142–151 in The genus Luticola D.G.Mann (Bacillariophyta) from the McMurdo Sound Region, Antarctica, with the description of four new species
FIGURES 142–151. Luticola transantarctica Kohler & Kopalová, sp. nov. Light (LM) and scanning electron micrographs (SEM). 142– 148. Specimens from the Labyrinth Pond, Wright Valley, the type population, LM. 149. Detail of isolated pore, internal valve view, SEM. 150. External valve view, type population, SEM. 151. Internal valve view, type population, SEM. LM scale bar = 10 μm. SEM scale bars = 10 μm, 4 μm for detail of internal isolated pore.
FIGURES 110–120 in The genus Luticola D.G.Mann (Bacillariophyta) from the McMurdo Sound Region, Antarctica, with the description of four new species
FIGURES 110–120. Luticola elegans (W. & G.S.West) Kohler & Kopalová, comb. et stat. nov. 109. Original illustration from West & West (1911: pl. 26, fig. 130). Light (LM) and scanning electron micrographs (SEM). 111–118. Specimens from Green Lake, Cape Royds, LM. 119. External valve view of a specimen from Green Lake, SEM. 120. Internal valve view of a specimen from the Nussbaum Riegal, SEM. LM scale bar = 10 μm. SEM scale bars = 5 μm.
FIGURES 75–83 in The genus Luticola D.G.Mann (Bacillariophyta) from the McMurdo Sound Region, Antarctica, with the description of four new species
FIGURES 75–83. Luticola permuticopsis Kopalová & Van de Vijver. Light (LM) and scanning electron micrographs (SEM). 75–82. Specimens from Canada Stream, Taylor Valley, LM. 83. External valve view of specimens from Canada Stream, SEM. LM scale bar = 10 μm. SEM scale bar = 5 μm.
ScienceDex guides
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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.