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1,337 results for “antarctica”
Kilometre-scale regional climate model simulations of two atmospheric river case studies in West Antarctica
<p>Regional climate model simulations produced using the MetUM, HCLIM and Polar-WRF models at 1 km horizontal grid spacing. The data span two case studies in which an atmospheric river made landfall over the Amundsen Sea Embayment and Thwaites / Pine Island ice shelves. The first is a winter case (23-30 June 2020) and the second a summer case (3-9 February 2020). </p> <p>Data are gridded, in native model coordinates, and saved as netcdf.</p> <p>Data produced by:</p> <p>HCLIM: José Abraham Torres</p> <p>MetUM: Ella Gilbert</p> <p>Polar-WRF: Denys Pishniak</p> <p>Data were produced to support the analysis presented in Gilbert et al. (2024) [preprint] . The research was funded by the PolarRES project, which is funded under the EU's Horizon 2020 programme call H2020-LC-CLA-2018-2019-2020 under grant agreement 101003590. MetUM simulations were performed on the ARCHER2 UK National Supercomputer. </p>
Table. Effects of sea animal colonization on the coupling between dynamics and activity of soil ammonia-oxidizing bacteria and archaea in maritime Antarctica.
<p> In this study, we chose active seal colony tundra soils (STS), penguin colony soil (PTS) and its adjacent penguin-lacking tundra soils (PLS), tundra marsh soils (MS), and background tundra soils (BS), to investigate the effects of sea animal colonization on the abundance, activity and diversity of AOA and AOB in maritime Antarctica. </p>
FIGURE 3. Staurotheca antarctica Hartlaub, 1904 in Benthic hydroids (Cnidaria: Hydrozoa) from off George V Coast (East Antarctica)
FIGURE 3. Staurotheca antarctica Hartlaub, 1904: A, hydrothecae. Staurotheca nonscripta Peña Cantero, Svoboda & Vervoort, 1997: B, hydrotheca. Staurotheca pachyclada (Jäderholm, 1904): C, hydrotheca. Antarctoscyphus spiralis (Hickson & Gravely, 1907): D, internode with hydrotheca showing intrathecal cusps (arrow). Symplectoscyphus glacialis (Jäderholm, 1904): E, internode with hydrotheca. Halecium interpolatum Ritchie, 1907: F, incipient stem with distal hydrotheca (arrow pointing to characteristic long and straight basal part of internode). Abietinella operculata (Jäderholm, 1903): G, hydrotheca (arrow pointing to disc-shaped operculum) and nematotheca (arrow). Schizotricha nana Peña Cantero, Svoboda & Vervoort, 1996: H, unforked hydrocladial internodes showing hydrothecae and nematothecae. Oswaldella erratum Peña Cantero & Vervoort, 1997: I, hydrocladial internode showing hydrotheca and mesial inferior nematotheca (arrow). Scale bars: 200 µm.
FIGURE 2 in Benthic hydroids (Cnidaria: Hydrozoa) from off George V Coast (East Antarctica)
FIGURE 2. Bimeria corynopsis Vanhöffen, 1910: A–B, fragments of stems with gonophores; C–D, detail of gonophores. Scale bars: 200 µm (A–B), 100 µm (C–D).
FIGURE 5 in Benthic hydroids (Cnidaria: Hydrozoa) from off George V Coast (East Antarctica)
FIGURE 5. Schizotricha auroraaustralis sp. nov.: A, forked hydrocladial internode showing hydrotheca, nematothecae and apophysis supporting lower-order hydrocladium, and ahydrothecate internode (arrow); B–C, unforked hydrocladial internodes with hydrothecae and nematothecae; D, detail of hydrotheca and nematothecae. Scale bars: 200 µm (A–C), 100 µm (D).
FIGURE 4 in Benthic hydroids (Cnidaria: Hydrozoa) from off George V Coast (East Antarctica)
FIGURE 4. Schizotricha auroraaustralis sp. nov.: A, hydrocladial branching and hydrothecal disposition; B, cauline internode showing hydrotheca and nematothecae, and first ahydrothecate hydrocladial internode; C, forked hydrocladial internode showing hydrotheca, nematothecae and apophysis supporting lower-order hydrocladium, and two ahydrothecate internodes; D– G, unforked hydrocladial internodes with hydrothecae and nematothecae; H, gonotheca Scale bars: 500 µm (A); 250 µm (B–H).
FIGURE 17. a–f in Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica)
FIGURE 17. a–f Oswaldella terranovae: a hydrotheca in lateral view; b hydrotheca in frontal view; c–d cauline apophysis showing nematophores; e hydrocaule with apophyses in triseriate arrangement; f male gonotheca in frontal view. g–m O. tottoni: g hydrotheca in lateral view; f hydrotheca in frontal view; i colony; j detail of the stem showing hydrocladial arrangement; k female gonootheca in lateral view; l male gonotheca in lateral view; m female gonotheca in frontal view (left) and male gonotheca in frontal view (right).
FIGURE 16. a–e in Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica)
FIGURE 16. a–e Oswaldella erratum: a stem; b cauline apophysis showing nematophore; c hydrotheca in lateral view; d hydrotheca in frontal view; e female gonotheca. f–j O. rigida: f cauline apophysis showing nematophore; g hydrotheca in lateral view; h hydrotheca in frontal view; i stem; j detail of the stem showing hydrocladial arrangement. k-l O. delicata: k hydrotheca in lateral view; l hydrotheca in frontal view
FIGURE 14. a in Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica)
FIGURE 14. a Halecium incertus: colony. b–c H. secundum: b hydrophore and hydrotheca; c gonothecae. d–g H. tubatum: d stem; e detail of the basal rings of the stem; f–g hydrothecae. h–j Hydrodendron arboreum: h stem showing hydrophores arrangement; i colony; j nematophore.
FIGURE 15. a in Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica)
FIGURE 15. a Aglaophenia baggins: hydrotheca. b–c Schizotricha glacialis: b forked hydrocladial internode; c unforked hydrocladial internode. d–f Sc. nana: d stem; e forked hydrocladial internode; f unforked hydrocladial internode. g–j Sc. unifurcata: g stem; h forked hydrocladial internode; i unforked hydrocladial internode; j internode with two hydrothecae.
FIGURE 13. a in Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica)
FIGURE 13. a Halecium cf. antarcticum: hydrophore and hydrotheca. b–d H. banzare: b hydrophore and hydrotheca; c male gonotheca; d colony. e H. exaggeratum: hydrophore and hydrotheca. f–g H. incertus: f hydrophore and hydrotheca; g gonotheca. h H. interpolatum: hydrophore and hydrotheca. i H. jaederholmi: hydrophore and hydrotheca. j–k H. pseudodelicatulum: j hydrophore and hydrotheca; k female gonotheca. l H. pseudoincertus: hydrophore and hydrotheca.
FIGURE 11. a in Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica)
FIGURE 11. a Symplectoscyphus anae: hydrotheca. b Sy. cumberlandicus: hydrotheca. c Sy. curvatus: hydrotheca. d Sy. exochus: hydrotheca. e Sy. frigidus: hydrotheca. f Sy. glacialis: hydrotheca. g Sy. liouvillei: hydrotheca. h Sy. naumovi: hydrotheca. i Sy. paulensis: hydrotheca. j Sy. plectilis: hydrotheca. k Sy. vanhoeffeni: hydrotheca. l Sy. weddelli: hydrotheca.
FIGURE 12. a in Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica)
FIGURE 12. a Symplectoscyphus anae: gonotheca. b Sy. cumberlandicus: gonotheca. c Sy. curvatus: gonotheca. d Sy. exochus: gonotheca. e Sy. glacialis: gonotheca. f–g Sy. liouvillei: f colony; g gonotheca. h Sy. naumovi: gonotheca. i Sy. plectilis: gonotheca. j Sy. vanhoeffeni: gonotheca. k Sy. weddelli: gonotheca.
FIGURE 10. a in Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica)
FIGURE 10. a Antarctoscyphus asymmetricus: hydrotheca. b–d A. elongatus: b colony; c–d hydrothecae. e–g A. grandis: e colony; f hydrotheca; g gonotheca. h–j A. spiralis: h colony; i–j hydrothecae. k Sertularella sp.: hydrotheca.
FIGURE 9. a in Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica)
FIGURE 9. a Staurotheca antarctica: stem showing hydrothecal arrangement. b St. dichotoma: stem showing hydrothecal arrangement; c–d St. frigida: c stem with male gonothecae; d stem with female gonotheca. e St. glomulosa: hydrotheca. f St. nonscripta: stem showing hydrothecal arrangement. g–h St. pachyclada: g stem showing hydrothecal arrangement; h hydrotheca. i–j St. vanhoeffeni: i colony; j stem showing hydrothecal arrangement. k St. polarsterni: stem showing hydrothecal arrangement and female gonothecae.
FIGURE 8 in Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica)
FIGURE 8. Box and whiskers chart showing variation in length of large microbasic mastigophores of Campanularia hicksoni according to hydrothecal length (black line = mean; white line = median).
FIGURE 7. a in Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica)
FIGURE 7. a Lafoeina longitheca: hydrotheca. b–c Stegella lobata: b stem showing hydrothecal arrangement; c gonotheca. d Phialella belgicae: hydrotheca. e–h Campanularia hicksoni: e general view of the colony; f hydrotheca; g pioneer polyp showing planula attachment; h gonotheca. i–j Campanularia sp.: i hydrotheca; j developing gonotheca. k–m Billardia subrufa: k general view of a colony growing on Oswaldella erratum; l stem showing hydrothecal arrangement; m gonothecae.
FIGURE 6. a–b in Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica)
FIGURE 6. a–b Acryptolaria frigida: a stem; b hydrotheca; c–f Filellum antarcticum: c hydrotheca; d coppinia; e section of a coppinia showing gonothecae and eggs; f detail of gonothecal aperture. g Filellum cf. magnificum: hydrotheca. h Filellum cf. bouvetensis: hydrotheca. i–j Lafoea dumosa: i stem; j detail of the stem showing hydrothecal arrangement. k Lafoea gaussica: hydrotheca. l-m Abietinella operculata: l stems; m detail of the stem showing hydrothecal arrangement. n Hebella cf. plana: hydrotheca.
FIGURE 5. a–h in Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica)
FIGURE 5. a–h Zyzzyzus parvula: a–f polyps in different developmental stages; g detail of juvenile polyps in the basal portion of a mature specimen; h blastostyle with developing gonophores. i-l Corymorpha microrhiza: i mature polyp; j blastostyle with gonophores; k–l juvenile polyps.
FIGURE 4. a–i in Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica)
FIGURE 4. a–i Tubularia longstaffi: a polyp-carrying tube; b male polyp; c blastostyle with developing male gonophores; d blastostyle with fully-grown male gonophores; e female polyp; f blastostyle with fully-grown female gonophores; g–h detail of female gonophores carrying actinulae; i actinulae in different stages of development. j–o Zanclea hicksoni: j early-developing polyp, k expanded young polyps, l expanded polyps with hydrorhizal filaments, m contracted polyp, n–o detail of polyps showing tentacle arrangement in linear clusters (arrows).
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
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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.