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68 results for “oceanography”
Supplementary data to: Characterizing regional oceanography and bottom environmental conditions at two contrasting sponge grounds on the northern Labrador Shelf.
<p>Supplementary data to the article: </p> <p><strong>Characterizing regional oceanography and bottom environmental conditions at two contrasting sponge grounds on the northern Labrador Shelf.</strong></p> <p> </p> <p> </p> <p>Published in Biogeosciences in 2024: https://bg.copernicus.org/articles/21/5407/2024/</p> <p><a href="https://bg.copernicus.org/articles/21/5407/2024/">BG - Characterizing regional oceanography and bottom environmental conditions at two contrasting sponge grounds on the northern Labrador Shelf</a></p> <p>DOI : https://doi.org/10.5194/bg-21-5407-2024</p> <p>Abstract: </p> <p>Deep-sea sponge grounds are distributed globally and are considered hotspots of biological diversity and biogeochemical cycling. To date, little is known about the environmental conditions that allow high sponge biomass to develop in the deep sea. Here, we characterize oceanographic conditions at two contrasting sites off the northern Labrador Shelf with high- and low-sponge-biomass. Data were collected by year-long benthic lander deployments equipped with current meters, a turbidity and chlorophyll-<em>a</em> measuring device, and a sediment trap. Additionally, regional oceanography was described by analyzing vertical conductivity-temperature-depth (CTD) casts, Argo float profiles, and surface buoy drifter data for the northern Labrador Shelf from 2005 to 2022. Stable isotopic composition of benthic fauna was determined to investigate food web structure at the sponge grounds. Our results revealed strong (0.26 ± 0.14 m s<sup>-1</sup>; mean ± SD) semidiurnal tidal currents at the high-sponge-biomass site, but twofold weaker currents (0.14 ± 0.08 m s<sup>-1</sup>; mean ± SD) at the low-sponge-biomass site. Tidal analysis suggests that, at the high-sponge-biomass site, kinetic energy is dissipated from barotropic tide to baroclinic tide/turbulence, which could enhance food availability for benthic organisms. Bottom nutrient concentrations were elevated at the high-sponge-biomass site which would benefits growth in deep-sea sponges. Organic matter flux to the seafloor was increased at the high-sponge-biomass site and consisted of fresher material. Finally, both sponge grounds demonstrated tight benthic-pelagic coupling prior to the onset of stratification. Stable isotope signatures indicated that soft corals (<em>Primnoa resedaeformis</em>) fed on suspended particulate organic matter, while massive sponges (<em>Geodia</em> spp.) likely utilized additional food sources. Our results imply that benthic fauna at the high-sponge-biomass site benefit from strong tidal currents, which increases food supply, and favourable regional ocean currents that increase nutrient concentration in bottom waters.</p>
Cormorant Oceanography Bathymetry Inversion
<p>This dataset includes observations and H(x) outputs as well as some processing and post-processing scripts used for the journal article titled:<br> <br> <strong>Multivariate Data Assimilation at a Partially-mixed Estuary</strong><br> <br> <strong>DOI:</strong> https://doi.org/10.1175/JTECH-D-22-0101.1</p>
Physical oceanography during RV DONG FANG HONG 2 cruise NORC2017
<p>During the RV DONG FANG HONG 2 cruise to the northern South China Sea in August 2017, a SeaBird SBE 911Plus CTD was deployed at nine different stations, and various physical parameters were measured. The measured parameters and the respective sensor details were: Pressure (Paroscientific, Digiquartz), Temperature (2 x SBE 3, ITS-90 °C), Conductivity (2x SBE 4), and Turbidity (Seapoint). The NTUs were correlated by linear regression with the mass of SPM obtained from filtered water samples (n=25) and the following relationship: SPM=1.03×NTU.</p>
California Current Ecosystem site, station Scripps Institution of Oceanography Pier, study of water temperature (mean) in units of celsius on a monthly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from California Current Ecosystem (CCE) contains water temperature (mean) measurements in celsius units and were aggregated to a monthly timescale.
California Current Ecosystem site, station Scripps Institution of Oceanography Pier, study of water temperature (mean) in units of celsius on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from California Current Ecosystem (CCE) contains water temperature (mean) measurements in celsius units and were aggregated to a yearly timescale.
Data from: Matching oceanography and genetics at the basin scale. Seascape connectivity of the Mediterranean shore crab in the Adriatic Sea
Investigating the interactions between the physical environment and early life history is crucial to understand the mechanisms that shape the genetic structure of marine populations. Here, we assessed the genetic differentiation in a species with larval dispersal, the Mediterranean shore crab (Carcinus aestuarii) in the Adriatic Sea (central Mediterranean), and we investigated the role of oceanic circulation in shaping population structure. To this end, we screened 11 polymorphic microsatellite loci from 431 individuals collected at eight different sites. We found a weak, yet significant, genetic structure into three major clusters: a northern Adriatic group, a central Adriatic group, and one group including samples from southern Adriatic and Ionian seas. Genetic analyses were compared, under a seascape genetics approach, with estimates of potential larval connectivity obtained with a coupled physical-biological model that integrates a water circulation model and a description of biological traits affecting dispersal. The cross-validation of the results of the two approaches supported the view that genetic differentiation reflects an oceanographic subdivision of the Adriatic Sea into three sub-basins, with circulation patterns allowing the exchange of larvae through permanent connections linking north Adriatic sites and ephemeral connections like those linking the central Adriatic with northern and southern locations.
Physical oceanography captured by PolarFront Seaglider SG644 in 2023-08
<p>Seaglider SG644 was deployed from 18 to 25 August, 2023 (for details, see the <a href="https://doi.org/10.5281/zenodo.10014336">Cruise Report</a> https://doi.org/10.5281/zenodo.10014336</p> <p>Sibling datasets from the same deployment:</p> <ul> <li><a href="https://doi.org/10.5281/zenodo.13946034">EK80</a>: https://doi.org/10.5281/zenodo.13946034</li> <li><a href="https://doi.org/10.5281/zenodo.10041063">UVP6</a>: https://doi.org/10.5281/zenodo.10041063</li> </ul>
Figure 12 in Calanoides natalis Brady, 1914 (Copepoda: Calanoida: Calanidae): identity and distribution in relation to coastal oceanography of the eastern Atlantic and western Indian Oceans
Figure 12. Relationship between greatest width and posterior width (µm) of the female genital double-somite in dorsal view for Calanoides natalis (star = Arabian Sea, diamond = off Namibia), Calanoides carinatus (square) and Calanoides brevicornis = Calanoides macrocarinatus (open circle).
Figure 11 in Calanoides natalis Brady, 1914 (Copepoda: Calanoida: Calanidae): identity and distribution in relation to coastal oceanography of the eastern Atlantic and western Indian Oceans
Figure 11. Variability in distal part of left leg 5 of Calanoides natalis: (a–d) from off Namibia; (e–i) from the Arabian Sea. Note specimen (g) has stout outer distal spine on segment 2 and many other specimens have this spine attenuated and apparently easily broken e.g. (d) and (i).
Figure 10 in Calanoides natalis Brady, 1914 (Copepoda: Calanoida: Calanidae): identity and distribution in relation to coastal oceanography of the eastern Atlantic and western Indian Oceans
Figure 10. Calanoides natalis male: (a) antennule ancestral segments I–XVII; (b) antennule ancestral segments XVIII–XXVIII; (c) antennule ancestral segments XXVII–XXVIII, setal numbers refer to numbering system of Weatherby et al. (1994); (d) antennule ancestral segments X and XI; (e) antenna; (f) mandible; (g) maxillule; (h) maxilla; (i) maxilliped; (j, k) maxilliped syncoxae from Benguela Current. Scale bars 0.1 mm.
Figure 6 in Calanoides natalis Brady, 1914 (Copepoda: Calanoida: Calanidae): identity and distribution in relation to coastal oceanography of the eastern Atlantic and western Indian Oceans
Figure 6. Calanoides natalis female: (a) quadrithek antennule, ancestral segments I–XIX; (b) quadrithek antennule, ancestral segments XX–XXVIII; (c) quadrithek antennule, ancestral segments X–XI; (d) quadrithek antennule, ancestral segments XXVII–XXVIII; (e) trithek antennule segments I–XI; (f) trithek antennule, ancestral segment XXIII; (g) antenna. a – aesthetacs; pa – pseudoannulate seta; va – vestigial aesthetasc. Scale bars represent 0.1 mm.
Figure 7 in Calanoides natalis Brady, 1914 (Copepoda: Calanoida: Calanidae): identity and distribution in relation to coastal oceanography of the eastern Atlantic and western Indian Oceans
Figure 7. Calanoides natalis female: (a) mandible; (b) maxillule; (c) maxilla; (d) maxilliped. Scale bar represents 0.1 mm.
Figure 5 in Calanoides natalis Brady, 1914 (Copepoda: Calanoida: Calanidae): identity and distribution in relation to coastal oceanography of the eastern Atlantic and western Indian Oceans
Figure 5. Calanoides natalis female: (a) dorsal view; (b) lateral view; (c) antennule; (d) genital doublesomite, lateral view; (e) genital double somite, dorsal view; (f) genital operculum (go) and left seminal receptacle (sr); (g) caudal ramus ventral view; (h) anterior head, ventral view. Scale bars represent 1.0 mm on figures (a–c) and 0.1 mm on the rest.
Figure 3. Calanoides male leg 5 in Calanoides natalis Brady, 1914 (Copepoda: Calanoida: Calanidae): identity and distribution in relation to coastal oceanography of the eastern Atlantic and western Indian Oceans
Figure 3. Calanoides male leg 5 indicating the measurements made, from which the ratios in Table 4 were calculated. (A) Length of distal spine on right exopod segment 3; (B) length of right exopod segment 3 measured along inner border; (b) width of right exopod segment 3 measured at its widest part; (C) length of right exopod segment 2 measured along inner border; (D) length of right exopod segment 1 measured along inner border; (E) total length of right endopod; (A') length of terminal spine on left exopod segment 3; (B') length of left exopod segment 3 measured along inner border; (b') width of left exopod segment 3 measured at its widest part; (C') length of left exopod segment 2 measured along inner border; (c') width of left exopod segment 2 measured at its widest part; (F) length of left exopod segment 3 measured along outer border; (G) length of outer distal spine on left exopod segment 2; (H) distance between proximal border of left exopod 3 and base of lateroproximal spine of exopod segment 3.
Figure 9 in Calanoides natalis Brady, 1914 (Copepoda: Calanoida: Calanidae): identity and distribution in relation to coastal oceanography of the eastern Atlantic and western Indian Oceans
Figure 9. Calanoides natalis male: (a) dorsal view; (b) lateral view – note specimen laterally compressed c.f. Figure 8; (c) antennule; (d) anterior head, lateral view; (e) left caudal ramus, dorsal view; (f) leg 5, posterior view; (g) left leg 5 exopod segment 3. Scale mark 1.0 mm on figures a–d, 0.1 mm on rest.
Figure 4 in Calanoides natalis Brady, 1914 (Copepoda: Calanoida: Calanidae): identity and distribution in relation to coastal oceanography of the eastern Atlantic and western Indian Oceans
Figure 4. Bayesian tree obtained from COI molecular data. Individuals are collapsed to species. Values at nodes indicate posterior probability. Monophyletic Neocalanus spp. and Mesocalanus tenuicornis were included as topology constraints. All species described in this paper were recovered as monophyletic.
Figure 2 in Calanoides natalis Brady, 1914 (Copepoda: Calanoida: Calanidae): identity and distribution in relation to coastal oceanography of the eastern Atlantic and western Indian Oceans
Figure 2. Location diagram of samples examined or mentioned in the test (see Table 1). □ – Calanoides acutus; ◊ – Calanoides brevicornis; ♦ – Calanoides carinatus s.s.; ○ – Calanoides natalis; ■ – Calanoides patagoniensis; ● – Calanoides philippinensis.
Figure 8 in Calanoides natalis Brady, 1914 (Copepoda: Calanoida: Calanidae): identity and distribution in relation to coastal oceanography of the eastern Atlantic and western Indian Oceans
Figure 8. Calanoides natalis female: (a) Leg 1 coxa, basis and endopod; (b) leg 1 exopod; (c) leg 2, anterior surface; (d) leg 3, posterior surface; (e) leg 4, posterior surface; (f) leg 5, anterior surface. Scale bar represents 0.1 mm.
Figure 1 in Calanoides natalis Brady, 1914 (Copepoda: Calanoida: Calanidae): identity and distribution in relation to coastal oceanography of the eastern Atlantic and western Indian Oceans
Figure 1. Photomicrographs of whole female (a–d) specimens in lateral view with antennules removed, and male (e) of: (a) Calanoides brevicornis (= Calanoides macrocarinatus) from 250–500 m, 42.41° S, 174.03° E; (b) Calanoides carinatus from 0–10 m, 43.67° S, 64.97° W; (c) Calanoides natalis from surface waters, Arabian Sea, 20.22° N, 58.75° E; (d) Calanoides philippinensis lateral view, Aru Basin, about 6° S, 133.5° E; (e) C. natalis from the Arabian Sea 20.22° N, 58.75° E. The Calanoides carinatus photo was made available by Drs Georgina Cepeda and Marina Sabatini (Consejo Nacional de Investgaciones Cientificas y Tecnicas, Argentina). Scale bar represents 0.5 mm.
Dataset for 'Phytoplankton community response to episodic wet and dry aerosol deposition in the subtropical North Atlantic' by Yuan et al. 2023. Limnology and Oceanography.
<p>Dataset for 'Phytoplankton community response to episodic wet and dry aerosol deposition in the subtropical North Atlantic' by Yuan et al. 2023. Limnology and Oceanography.</p>
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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.