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2,414 results for “Pacific Ocean”
Dissolved trace metal (Fe, Ni, Cu, Zn, Cd, Pb) concentrations in the Indian and Pacific sectors of the Southern Ocean from the Antarctic Circumnavigation Expedition (2016-2017)
<p>Dissolved trace metal (Fe, Ni, Cu, Zn, Cd, Pb) concentrations in the Indian and Pacific sectors of the Southern Ocean from the Antarctic Circumnavigation Expedition, 2016-2017.</p> <p>Dissolved trace metal (Fe, Ni, Cu, Zn, Cd, Pb) concentrations measured on seawater samples from the Southern Ocean. Samples were collected with a trace metal clean rosette system to a maximum depth of 1000 m during Legs 1 and 2 of the Antarctic Circumnavigation Expedition (ACE), 2016-2017. Samples were filtered through Akropak Supor filters (0.2 um) in a class 100 clean container, acidified to pH ≤ 2 and stored until analysis (>6 months). Samples from Leg 1 (TMR Casts 3-7) were collected during a transect from Cape Town, South Africa to Hobart, Australia. Samples from Leg 2 (TMR casts 8-20) were collected during a transect from Hobart, Australia to Punta Arenas, Chile. Data cover environments near subantarctic and Antarctic islands (TMR 3, 4, 13-15), in the Mertz Glacier Polynya (TMR 11-12) and near the Antarctic Peninsula (TMR 18), as well as meridional transects to and from the Antarctic continent (TMR 7-12, TMR 18-20).</p>
Data from: Basin-scale biogeochemical and ecological impacts of islands in the tropical Pacific Ocean
<p><strong>Abstract</strong></p> <p>In the relatively unproductive waters of the tropical ocean, islands can enhance phytoplankton biomass and create hotspots of productivity and biodiversity that sustain upper trophic levels, including fish that are crucial to the survival of islands’ inhabit- ants. This phenomenon, termed the island mass effect 65 years ago, has been widely described. However, most studies focused on individual islands, and very few documented phytoplankton community composition. Consequently, basin-scale impacts on phytoplankton biomass, primary production and biodiversity remain largely unknown. Here we systematically identify enriched waters near islands from satellite chlorophyll concentrations (a proxy for phytoplankton biomass) to analyse the island mass effect for all tropical Pacific islands on a climatological basis. We find enrichments near 99% of islands, impacting 3% of the tropical Pacific Ocean. We quantify local and basin-scale increases in chlorophyll and primary production by contrasting island-enriched waters with nearby waters. We also reveal a significant impact on phytoplankton community structure and biodiversity that is identifiable in anomalies in the ocean colour signal. Our results suggest that, in addition to strong local bio- geochemical impacts, islands may have even stronger and farther-reaching ecological impacts.</p> <p> </p> <p><strong>Data set and method</strong></p> <p>For each island, an algorithm detected the Island Mass Effect (IME) from climatological satellite chlorophyll maps as a contour enclosing the island and surrounding high-chlorophyll waters, termed IME region. A reference (REF) region of the same size was detected alongside each IME region, enclosing nearby non-IME waters. The IME and REF regions were used to build the IME database described in Messié et al. (2022), that includes variables related to satellite chlorophyll, primary production, and PHYSAT phenoclass diversity metrics in IME and REF regions on a climatological basis.</p> <p>This data set includes 4 files:</p> <ul> <li>island_database.csv: information regarding the 664 islands and shallow reefs where the IME detection was applied</li> <li>IME_masks.nc: monthly climatological masks for the IME and REF regions for all islands,</li> <li>IME_database.nc: IME database as a function of island and climatological month (chlorophyll, primary production, and phenoclass-derived variables calculated within the IME and REF masks).</li> <li>PHYSAT_climatology.nc: climatological maps for each PHYSAT phenoclass, used to calculate phenoclass-derived variables in the IME database.</li> </ul> <p>See details regarding data sources and calculations in <a href="https://rdcu.be/cO4qr">Messié et al. (2022)</a>.</p>
Seawater dissolved chromium concentration, redox speciation, and stable isotope composition in the North Pacific Ocean
<p>Dissolved seawater chromium concentrations, redox speciation, and stable isotope composition were measured on samples collected in the North Pacific Ocean. Samples were collected over diel cycles (2 for stations 1-5, 1 for station 6) on board the RV Kilo Moana cruise KM1713 from Seward Alaska to Honolulu Hawai’i. Sampling stations spanned the subarctic North Pacific (stations 1 & 2), the dynamic subarctic-subtropical convergence zone (stations 3 and 4) and the subtropical North Pacific (stations 5 and 6). Chromium was enriched from filtered samples by Mg(OH)<sub>2</sub> co-precipitation and analyzed by MC-ICP-MS using either isotope dilution (Cr redox speciation) or double spike methodology.</p>
Journey North - Gray Whale observations by volunteer community scientists across the Eastern Pacific Ocean (1997-2020)
This data package contains Gray Whale migration data consisting of 1,546 total observational reports from 1997 - 2020 across the Eastern Pacific Ocean. These data were collected by 163 community scientists for Journey North, a crowdsourced participatory science program of the University of Wisconsin-Madison Arboretum. The Journey North Gray Whale Project is a study of Gray Whale phenology conducted at broad spatial and temporal scales. Since 1997, community scientists have tracked the migration of Gray Whales (Eschrichtius robustus) through the Eastern Pacific Ocean. Observers also provide estimates of the number of whales sighted. However, observers do not follow standardized methods for counting species observed. Observers do not observe at set times of the day, do not repeat observations regularly, and are not required to provide the length of time during which a specified number of species observed were counted. Therefore, it is recommended that this dataset be analyzed to indicate presence not abundance. Researchers are encouraged to read the rich information provided by volunteers in their comments. These comments provide qualitative information about observational reports. Researchers are also encouraged to refer to submitted photographs that also provide context for observational reports. The Journey North Gray Whale Project dataset is hosted by the University of Wisconsin-Madison Shared Web Hosting Service.
Marine heatwaves statistics for the tropical western and central Pacific Ocean
<p>Processed marine heatwave metrics are provided for the tropical western and central Pacific Ocean region (120°E-140°W, 40°S-15°N). The metrics are computed from daily sea surface temperature (SST) data, from both observations and models. The observed marine heatwave data are calculated from NOAA 0.25° daily Optimum Interpolation Sea Surface Temperature (OISST) over the period 1982-2019. The modelled marine heatwave data are from analysis of 18 model simulations as part of the Coupled Model Intercomparison Project, Phase 6 (CMIP6) over the period 1982-2100, where two future scenarios have been analysed. Marine heatwaves are computed with respect to the 1995-2014 climatology. The marine heatwave data are provided on a grid point basis across the domain. Marine heatwave timeseries metrics are also provided for three case study regions: Fiji, Samoa, and Palau.</p>
Supporting Data: Phylogeny of Arbacia Gray, 1835 (Echinoidea) reveals diversification patterns in the Atlantic and Pacific Oceans.
<p>This dataset contains:</p> <ol> <li>Appendix S1, metadata asociated with the specimens (collection localities, specimen numbers)</li> <li>The aligned sequence files for each marker: COI_fasta, 16S_fasta, CR_fasta</li> <li>The concatenated sequence file COI + 16S + CRA + 28S Arbacia_supermatrix_fasta and the partition file partitions_concat</li> <li>The Bayesian trees for COI, 16S, CRA, and the supermatrix: BI_tree_16S, BI_tree_COI, BI_tree_CR, BI_tree_Arbacia_supermatrix</li> <li>The ML tree of the supermatrix: ML_tree_Arbacia_supermatrix</li> <li>Appendix S2, which includes various information on the primers used, PCR cycles, etc.</li> <li>Appendix S3, which includes the index calculations for each marker.</li> </ol>
Brilliantia kiribatiensis, a new genus and species of Cladophorales (Chlorophyta) from the remote coral reefs of the Southern Line Islands, Pacific Ocean
<p>Data associated with the study "<em>Brilliantia kiribatiensis</em>, a new genus and species of Cladophorales (Chlorophyta) from the remote coral reefs of the Southern Line Islands, Pacific Ocean".</p> <p><strong>ITS.fasta, ITS_bmge.fasta, LSU.fasta, LSU_bmge.fasta, SSU.fasta, SSU_bmge.fasta: </strong>SSU rDNA, LSU rDNA and rDNA ITS sequences used in phylogenetic analyses. Sequences of Brilliantia kiribatiensis were added to updated phylogenetic datasets used previously (Leliaert et al. 2007a, Leliaert et al. 2009b), aligned in MAFFT v7.215 (Katoh and Standley 2013), and stripped of hypervariable sites in BMGE v1.1 (Criscuolo and Gribaldo 2010) by using the -h 0.4 -g 0.35 parameters. Alignments were visually checked and concatenated in Seaview v4.4.2.</p> <p><strong>concatenated_SSU_ITS_LSU.fasta</strong>: concatenated alignment with following partitions: SSU: 1-1797, ITS1+5.8S+ITS2: 1798-3335, LSU: 3336-3926.</p> <p><strong>Table_S1_sequence_sources.xls: </strong>GenBank accessions, sample isolate codes and sites of collection for sequences included in the concatenated phylogenetic data set.</p> <p><strong>Table S2. </strong>Percent cover of different algal groups in 1 m2 photoquadrats. Algal groups are identified to genus level for fleshy macroalgae or functional group for turf algae, branched red algae, crustose coralline algae, and cyanobacteria.</p> <p><strong>Table SX.</strong> Morphological measurements of <em>Brilliantia kiribatiensis</em>.</p>
Biodiversity patterns of epipelagic copepods in the South Pacific Ocean: Strengths and limitations of current data bases
<p>These data were used for the development of the paper "<strong>Biodiversity patterns of epipelagic copepods in the South Pacific Ocean: Strengths and limitations of current data bases</strong>". Especifically, we added ecological and environmental data that were used for modeling.</p>
Small, coastal temperate rainforest watersheds dominate organic carbon transport to the northeast Pacific Ocean
The northeast Pacific Coastal Temperate Rainforest (NPCTR) extending from southeast Alaska to northern California is characterized by high precipitation and large stores of recently fixed biological carbon. We show that 3.4 Tg-C yr-1 as DOC is exported from the NPCTR drainage basin to the coastal ocean. More than 56% of this riverine DOC flux originates from thousands of small (mean = 118 km2), coastal watersheds that comprise 22% of the NPCTR drainage basin. The average DOC yield from NPCTR coastal watersheds (6.20 g-C m-2 yr-1) exceeds that from Earth’s tropical regions by roughly a factor of three. The highest yields occur in small, coastal watersheds in the central NPCTR due to the balance of moderate temperature, high precipitation, and high soil organic carbon stocks. These findings indicate that DOC export from NPCTR watersheds may play an important role in regional-scale heterotrophy within near-shore marine ecosystems in the northeast Pacific. These are the datasets used in this analysis
They Came From The Pacific: How changing Arctic currents could contribute to an ecological regime shift in the Atlantic Ocean - Lagrangian Data 1990-2002 (2 of 2)
<p>Supporting data for Kelly et al.: They Came From The Pacific: How changing Arctic currents could contribute to an ecological regime shift in the Atlantic Ocean (Earth's Future, submitted)<br> <br> Trajectories saved by year of release in the Bering Strait. All months from that year are included in the same file, with the first 1000 trajectories corresponding to January release, second 1000 from February release, and so on. <br> <br> Due to the size of files, this is split into two uploads. Part 1 covers 1970-1989 releases, 1990 onward is saved in Part 2. </p>
They Came From The Pacific: How changing Arctic currents could contribute to an ecological regime shift in the Atlantic Ocean - Lagrangian Data 1970-1989 (1 of 2)
<p>Supporting data for Kelly et al.: They Came From The Pacific: How changing Arctic currents could contribute to an ecological regime shift in the Atlantic Ocean (Earth's Future, submitted)<br> <br> Trajectories saved by year of release in the Bering Strait. All months from that year are included in the same file, with the first 1000 trajectories corresponding to January release, second 1000 from February release, and so on. <br> <br> Due to the size of files, this is split into two uploads. Part 1 covers 1970-1989 releases, 1990 onward is saved in Part 2. </p>
Fig. 4 in Two new free-living nematode species (Trefusiina: Trefusiidae) from the Chatham Rise crest, Southwest Pacific Ocean
Fig. 4. Trefusialaimus idrisi sp. nov. Light micrographs. A. Anterior body region of male, lateral view. B. Anterior body region of juvenile, dorsal view. C. Mid-body region of juvenile, showing sperm cells in pseudocoelom. D. Entire male. E. Lateral chord of male, showing round golden inclusions. Arrows point to sperm cells. Scale bar: A-C, E = 15 µm; D = 260 µm.
Fig. 3 in Two new free-living nematode species (Trefusiina: Trefusiidae) from the Chatham Rise crest, Southwest Pacific Ocean
Fig. 3. Trefusialaimus idrisi sp. nov. A. Anterior body region of male. B. Head of male. C. Head of juvenile. D. Right spicule. E. Gubernaculum. F. Male copulatory apparatus. G. Mature sperm. H. Posterior body region of male. Scale bar: A = 40 µm; B-C, G = 20 µm; D-E = 14 µm; F = 28 µm; H = 75 µm.
Fig. 2 in Two new free-living nematode species (Trefusiina: Trefusiidae) from the Chatham Rise crest, Southwest Pacific Ocean
Fig. 2. Trefusia piperata sp. nov. Light micrographs. A. Head region of male, showing buccal cavity, cephalic setae, and clusters of dark granules at base of outer labial setae. B. Spicule and gubernaculum. C. Entire male. Scale bar: A-B = 10 µm; C = 100 µm.
Fig. 1 in Two new free-living nematode species (Trefusiina: Trefusiidae) from the Chatham Rise crest, Southwest Pacific Ocean
Fig. 1. Trefusia piperata sp. nov. A. Anterior body region of female. B. Anterior body region of male. C. Entire female. D. Right spicule and gubernaculum. E. Posterior body region of male. Arrow shows position of vulva. Scale bar: A-B, E = 20 µm; C = 75 µm; D = 8 µm.
Fig. 6 in New species of the genus Otitoma Jousseaume, 1898 (Pseudomelatomidae, Conoidea) from the Western Pacific Ocean
Fig. 6. [next page] A–H. Otitoma crassivaricosa sp. nov. A–B. Holotype (MNHN IM-2000-32607), MUSORSTOM 9, Stn DW1218, Hiva Oa Island, Marquisas Archipelago, 9°44.5′ S, 138°50.9′ W, 125– 135 m, 9.85 × 3.7 mm. C. Teleoconch (not coated). D. Secondary spiral sculpture of the teleoconch (not coated). E–H. Protoconch (not coated). F. Microsculpture and of the protoconch (not coated). H. Color micrograph of the same protoconch. — I–N. Otitoma philpoppei sp. nov. I–J. Holotype (MNHN IM-2000-32609), Philippines, Mactan Island, 200 m, from local fishermen, 6.7 × 2.7 mm. K–N. Paratype (MNHN IM-2000-32610), BORDAU 1, Stn DW1464, Fiji, 18°09′ S, 178°38′ W, 285– 300 m. L. Teleoconch. M–N. Protoconch. — O–T. Otitoma nereidum sp. nov. O–P. Holotype (MNHN IM-2000-32611), BORDAU 1, Stn DW1464, Fiji, 18°09′ S, 178°38′ W, 285–300 m, 9.15 × 3.35 mm. Q–T. Paratype 2 (MZB 60216), BORDAU 1, Stn DW1494, Fiji, 18°55′ S, 178°29′ W, 240–319 m. R. Teleoconch. S–T. Protoconch, scale bar = 100 μm. Scale bars: C, E, R = 500 µm; D, L–N = 100 µm; F = 10 µm; K, Q = 1 mm.
Fig. 5 in New species of the genus Otitoma Jousseaume, 1898 (Pseudomelatomidae, Conoidea) from the Western Pacific Ocean
Fig. 5. [next page] A–H. Otitoma rubiginostoma sp. nov. A–B. Holotype (MNHN IM-2000- 32604), MUSORSTOM 4, Stn DW151, New Caledonia, 19°07′ S, 163°22′ E, 200 m, 4.7 × 1.8 mm. C–H. Paratype 2 (MZB 60214), MUSORSTOM 4, Stn DW149, New Caledonia, 19°08′ S, 163°23′ E, 155 m. D. Teleoconch. E. Secondary spiral sculpture of the teleoconch. F–G Protoconch. H. Microsculpture of the protococonch. — I–O. Otitoma elegans sp. nov. I–J. Holotype (MNHN IM-2000-32606), BORDAU 1, Stn DW1465, Fiji Island, 18°09′ S, 178°39′ W, 290–300 m, 12.6 × 4.8 mm. K. Teleoconch (not coated). L. Secondary spiral sculpture of the teleoconch (not coated). M, O. Protoconch (not coated). N. Microsculpture of the protococonch. — P–U. Otitoma philippinensis sp. nov. P–Q. Holotype (MZB 60215), Philippines, Nocnocan Island, 180–250 m, trawled by fishermen, 15.4 × 5.25 mm. R. Teleoconch (not coated). S. Secondary spiral sculpture of the teleoconch (not coated). T–U. Protoconch (not coated). Scale bars: C, K = 1 mm; D, F–G, L–N, S–U = 100 µm; E, H, O = 50 µm; R = 500 µm.
Fig. 3 in New species of the genus Otitoma Jousseaume, 1898 (Pseudomelatomidae, Conoidea) from the Western Pacific Ocean
Fig. 3. [next page] A–G. Otitoma xantholineata sp. nov. A–B. Holotype (MNHN IM-2000-32587), Fiji, S of Viti Levu, 18°12.4′ S, 178°33.0′ E, 144-150 m, 7.25 × 3.0 mm. C–G. Paratype 5 (MZB 60211), MUSORSTOM 10, Stn CP1366, Fiji, S of Viti Levu, 18°12.4′ S, 178°33.1′ E, 149–168 m. D. Teleoconch. E. Secondary sculpture of the teleoconch. F–G. Protoconch. — H–I. Drillia batjensis Schepman, 1913, syntype, Batjan, 0°11′ S, 127°25′ E, Indonesia, 397 m, 7.39 × 3.75 mm, (ZMA.MOLL.136858_1). — J–L. Austropusilla (Metaclathurella) crokerensis Shuto, 1983, holotype, Australia, Northern Territory, Arafura Sea, 10°17′00″ S, 132°38′00″ E, ca 45 m (C.134692). — M–R. Otitoma tropispira sp. nov. M–N. Holotype (MNHN IM-2000-32591), BATHUS 2, Stn DW747, S of New Caledonia, 22°30′ S, 166°260′ E, 574 m, 16.3 × 5.7 mm. O–R. Paratype 2 (not coated) (MZB 60212), SW New Caledonia, Boulari Passage, 400 m. O. Teleoconch. P. Secondary spiral sculpture of the teleoconch. Q–R. Protoconch. Scale bars: C = 2 mm; D, O = 500 µm; E–G = 200 µm; P–R = 100 μm.
Fig. 1 in New species of the genus Otitoma Jousseaume, 1898 (Pseudomelatomidae, Conoidea) from the Western Pacific Ocean
Fig. 1. [next page] A–L. Otitoma cyclophora (Deshayes, 1863). A–B. Philippines, Mactan Island, 10–20 m, 7.5 × 2.67 mm. C–D. MUSORSTOM 10, Stn CP 1366, Fiji, S of Viti Levu, 18°12.4′ S, 178°33.1′ E, 149–168 m, 11.35 × 3.65 mm. E–F. Holotype of Mitrellotoma mitra Kilburn, 1986, S Mozambique, Bazaruto Archipelago, approximately 21°53′ S, 35° 26′ E, 6.4 × 2.3 mm (NMJ4527/ T3287). G–K. Madagascar, Tulear reef, 15–20 m. G. Shell. H. Teleoconch. I. Secondary spiral sculpture of the teleoconch. J–L. Protoconch. L. Microsculpture of the protoconch. — M–S. Otitoma carnicolor (Hervier, 1896). M–N. Specimen from Lifou, 20°55.0′ S,167°05.2′ E, 9–20 m, 7.26 × 2.57 mm. O–S. Specimen from Lifou, 20°53.5′ S, 167°02.7′ E, 12–32 m. P. Teleoconch. Q. Secondary spiral sculpture of the teleoconch. R–S. Protoconch. Scale bars: G, O = 1 mm; H = 500 µm; I–K, P, R–S = 100 µm; L = 10 µm; Q = 50 µm.
Fig. 2 in A new species of Novastoa Finlay, 1926 (Mollusca: Gastropoda: Vermetidae) from coral reefs of the Pacific Ocean
Fig. 2. Novastoa rapaitiensis sp. nov. A–D. Pre-hatching larval shells from egg mass of Fig. 1M. E–F. Operculum of specimen from Rapa Iti (not from the type series). G. SEM image of lateral view of operculum, with lamina stripped away to expose underlying structure (MNHN IM-2000-31684, Rapa Iti Island, French Polynesia). H. SEM image of exterior surface of operculum (MNHN IM-2000-31684, Rapa Iti Island, French Polynesia). I. Radula of specimen from Rapa Iti. L. Central section of radula (MNHN IM-2000-31684, Rapa Iti Island, French Polynesia). M. SEM image of teleoconch sculpture after removal of surrounding substrate (UF 436684, Moorea Island, French Polynesia).
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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)
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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.