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738 results for “estuary”
Data from: Modelling the potential impacts of climate change on the distribution of ichthyoplankton in the Yangtze Estuary, China
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Quantifying methane emissions from Laurentian Great Lakes estuaries using in situ measurements, remote sensing and machine learning
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Sea otters in a California estuary: Detecting temporal and spatial dynamics with volunteer monitoring
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Monthly small nekton samplings collected in the Plum Island Estuary, 2015
Small nekton samplings collected by seine in the Plum Island Estuary during the summer of 2015. The collections were conducted in a manner similar to the Massachusetts Division of Marine Fisheries study in 1965, "A Study of the Marine Resources of the Parker River-Plum Island Sound Estuary, Jerome et al., 1968.
PIE LTER Land Cover (2005), Plum Island Sound estuary, Massachusetts - Raster
This is a seven-category land-cover map of the Plum Island Sound estuary, Massachusetts. The seven categories are: water, tidal flats and soils, Spartina alterniflora, Spartina patens, trees, grass, impervious surface. These medium resolution true color images are considered the new "basemap" for the Commonwealth by MassGIS. The photography for the entire commonwealth was captured in April 2005 when deciduous trees were mostly bare and the ground was generally free of snow. Image type is 4-band (RGBN) natural color (Red, Green, Blue) and Near infrared in 8 bits (values ranging 0-255) per band format.
PIE LTER Land Cover (2013), Plum Island Sound estuary, Massachusetts - Raster
This is a seven-category land-cover map of the Plum Island Sound estuary, Massachusetts. The seven categories are: water, tidal flats and soils, Spartina alterniflora, Spartina patens, trees, grass, impervious surface. These medium resolution true color images are considered the new "basemap" for the Commonwealth by MassGIS. The photography for the entire commonwealth was captured in April 2013 when deciduous trees were mostly bare and the ground was generally free of snow. Image type is 4-band (RGBN) natural color (Red, Green, Blue) and Near infrared in 8 bits (values ranging 0-255) per band format.
PIE LTER Water Network (2005), Plum Island Sound estuary, Massachusetts - Vector
Fine scale DEM was generated by using Terrasolid’s TerraScan Lidar processing software, based on airborne LiDAR data collected on April 19th to 25th, 2005; then a toolbox ArcHydro in the software ArcGIS is used to extract stream network from the DEM data.
FIGURE5 in Description of Ptilohyale corinne sp. nov. (Amphipoda: Hyalidae) from the Bahía Blanca estuary, Argentina, including a key to all valid Ptilohyale species
FIGURE5 Ptilohyale corinne sp. nov., male holotype: a uropod 1; b uropod 2; c uropod 3; d telson. Scale bars: 200 µm.
FIGURE6 in Description of Ptilohyale corinne sp. nov. (Amphipoda: Hyalidae) from the Bahía Blanca estuary, Argentina, including a key to all valid Ptilohyale species
FIGURE6 Ptilohyale corinne sp. nov., female allotype: a antenna 2; b gnathopod 2; c coxa 3; d peraeon segments 1–3, preamplexing notch indicated by an arrow. Scale bars: 200 µm (a–c), 0.5 mm (d).
Data sets used in the study "To supplement estuaries turbidity theory: An investigation of low turbidity zones in estuaries "
<p>This is the data sets used in the study "To supplement estuaries turbidity theory: An investigation of low turbidity zones in estuaries "</p>
Co-ocurrence patterns of marine catfishes in the Amazonian estuary: Data and coding
<p>Data and script to analyze the local co-occurrence patterns of ariids in the Amazonian estuary. These results are discussed in the manuscript "Environmental conditions promote local segregation of catfishes in the Amazonian estuary, but ecomorphological differences may allow aggregation", soon to be submitted as a preprint to EcoEvoRxiv Preprints.</p>
FIGURE 4 in A new species closely related to Acartia sinjiensis (Copepoda: Calanoida), from river estuaries of northern Luzon, the Philippines
FIGURE 4. Maximum likelihood (ML) phylogenetic trees based on COI gene of Acartia cagayanensis sp. nov. from the Cagayan (CP) and Pata (PP) Rivers in the Philippines, A. sinjiensis from the Ayaragi River (AJ) in the mainland and the Yamakuni River (YJ) in Kyushu Island, Japan, and A. tsuensis (outgroup). ML bootstrap probabilities and Bayesian posterior probabilities for bipartitions with over 65% and 0.95 support, respectively, are shown. DDBJ/EMBL/GenBank accession nos. are provided in parentheses.
FIGURE 2 in A new species closely related to Acartia sinjiensis (Copepoda: Calanoida), from river estuaries of northern Luzon, the Philippines
FIGURE 2. Acartia cagayanensis sp. nov. female (A–G, I, holotype; H, paratype from the Cagayan River). A, left maxillule; B, left maxilla; C, right maxilliped; D–H, legs 1–5, posterior; I, right leg 5, right lateral.
Data from: Landscape genetic structure of Scirpus mariqueter reveals a putatively adaptive differentiation under strong gene flow in estuaries
Estuarine organisms grow in highly heterogeneous habitats and their genetic differentiation are driven by selective and neutral processes as well as population colonization history. However, the relative importance of the processes that underlie genetic structure is still puzzling. Scirpus mariqueter is a perennial grass almost limited in the Changjiang River estuary and it's adjacent Qiantang River estuary. Here, using amplified fragment length polymorphism (AFLP), a moderate-high level of genetic differentiation among populations (range FST: 0.0310-0.3325) was showed despite large ongoing dispersal. FLOCK assigned all individuals to 13 clusters and revealed a complex genetic structure. Some genetic clusters were limited in peripheries compared with very mixing constitution in centre populations, suggesting local adaptation was more likely to occur in peripheral populations. 21 candidate outliers under positive selection were detected, and further, the differentiation patterns correlated with geographic distance, salinity difference and colonization history were analyzed with or without the outliers. Combined results of AMOVA and IBD based on different dataset, it was found that the effects of geographic distance and population colonization history on isolation seemed to be promoted by divergent selection. However, none-liner IBE pattern indicates the effects of salinity were overwhelmed by spatial distance or other ecological process in certain areas, and also suggests that salinity was not the only selective factor driving population differentiation. These results together indicate that geographic distance, salinity difference and colonization history co-contributed in shaping the genetic structure of S. mariqueter, and that their relative importance was correlated with spatial scale and environment gradient.
Data from: Dynamics of marsh-mangrove ecotone since the mid-Holocene: a palynological study of mangrove encroachment and sea level rise in the Shark River Estuary, Florida
Sea level rise and the associated inland shift of the marsh-mangrove ecotone in south Florida have raised many scientific and management concerns in recent years. Holocene paleoecological records can provide an important baseline to shed light on the long-term dynamics of vegetation changes across this ecotone in the past, which is needed to predict the future. In this study, we present palynological, X-ray fluorescence, and loss-on ignition data from four sedimentary cores recovered from a 20-km marine-to-freshwater transect along the Shark River Estuary, southwest Everglades, to document the patterns and processes of coastal vegetation changes in response to sea level rise since the mid-Holocene. Our record indicates that freshwater marsh progressively replaced marl prairies at the Shark River Estuary between 5700 and 4400 cal yr BP. As marine transgression continued, marine influence reached the threshold necessary for mangroves to establish at the current mouth of the Shark River Slough at 3800 cal yr BP. During the next 3000 years, although sea level rise in the Western North Atlantic slowed down to 0.4 mm/yr, a spatial and temporal gradient was evident as the marsh-mangrove ecotone shifted inland by 20 km from 3800 to 800 cal yr BP, accompanied by a gradual landward replacement of freshwater marsh by mangrove forest. If sea level continues to rise at 2.33 mm/yr in the 21st century in south Florida, it is possible that marine influence will reach the threshold for mangroves to establish in the central Everglades, and we could expect a much more aggressive mangrove encroachment toward the northern and interior parts of south Florida in the next few centuries.
Lower St. Lawrence Estuary bacterial 16S rRNA gene diversity
<p>The Estuary and Gulf of St. Lawrence (EGSL) in eastern Canada is among the largest and most productive coastal ecosystems in the world.<b> </b>Very little information on bacterial diversity exists, hampering our understanding of the relationships between bacterial community structure and biogeochemical function in the EGSL. During the productive spring period, we investigated free-living and particle-associated bacterial communities across the stratified waters of the Lower St. Lawrence Estuary, including the particle-rich surface and bottom boundary layers. Modeling of community structure based on 16S rRNA gene and transcript diversity identified bacterial assemblages specifically associated with four habitat types defined by water mass (upper water or lower water column) and size fraction (free-living or particle-associated). Assemblages from the upper waters represent sets of co-occurring bacterial populations that are widely distributed across Lower St. Lawrence Estuary surface waters., and likely key contributors to organic matter degradation during the spring. In addition, we provide strong evidence that particles in deep hypoxic waters and the bottom boundary layer support a metabolically-active bacterial community that is compositionally distinct compared to surface particles and the free-living communities. Among the distinctive features of the bacterial assemblage associated with lower water particles was the presence of uncultivated lineages of Deltaproteobacteria, including marine Myxobacteria. Overall, these results provide an important ecological framework for further investigations of the biogeochemical contributions of bacterial populations in this important coastal marine ecosystem.</p>
Data from: Discovery of a multi-species shark aggregation and parturition area in the Ba Estuary, Fiji Islands
Population declines in shark species have been reported on local and global scales, with overfishing, habitat destruction and climate change posing severe threats. The lack of species-specific baseline data on ecology and distribution of many sharks, however, makes conservation measures challenging. Here we present a fisheries-independent shark survey from the Fiji Islands, where scientific knowledge on locally occurring elasmobranchs is largely still lacking despite the location's role as a shark hotspot in the Pacific. Juvenile shark abundance in the fishing grounds of the Ba Estuary (north-western Viti Levu) was assessed with a gillnet- and longline-based survey from December 2015 to April 2016. A total of 103 juvenile sharks identified as blacktip Carcharhinus limbatus (n = 57), scalloped hammerhead Sphyrna lewini (n = 35), and great hammerhead Sphyrna mokarran (n = 11) sharks were captured, tagged, and released. The condition of umbilical scars (68 % open or semi-healed), mean sizes of individuals (± SD) (C. limbatus: 66.5 ± 3.8 cm, S. lewini: 51.8 ± 4.8 cm, S. mokarran 77.4 ± 2.8 cm), and the presence of these species over recent years (based on fishermen interviews), suggest that the Ba Estuary area is a critical habitat for multiple species that are classified as "Near Threatened" or "Endangered". Specifically, the area likely acts as a parturition ground over the studied period, and potentially as a subsequent nursery area. We identified subareas of high abundance and found that temperature, salinity and depth acted as small-scale environmental drivers of shark abundance. The data suggests a tendency for species-specific spatial use, both horizontally (i.e. between sampling areas) and vertically (i.e. across the water column). These results enhance the understanding of shark ecology in Fiji and provide a scientific basis for the implementation of local conservation strategies that contribute to the protection of these threatened species.
SELFE sediment model benchmark in the Columbia River estuary.
<p>SELFE sediment model benchmark in the Columbia River estuary.</p> <p>This is an archive of the set of SELFE simulations used to benchmark a sediment module against idealized test cases and a realistic scenario in the Columbia River estuary.<br /> Each test is contained in a directory and includes model input files, the binary used, and scripts used for post-processing.<br /> The simulations, data, and analysis were used for the manuscript "Benchmarking an unstructured-grid sediment model in an energetic estuary" by JE Lopez and AM Baptista.</p> <p>The archive consists of data collected from CMOP research cruises and we would like to acknowledge the contributions of Jim Carlson, John Dunlap, Avery Snyder, Keaton Snyder, and Nate Lauffenburger (University of Washington) and Daryl Swensen and Byron Crump (Oregon State University) in the collection of this data.</p>
FIGURE 4. Corophium colo n in A new species of Corophium from eastern Australian estuaries (Crustacea: Amphipoda: Corophiidae: Corophiinae: Corophiini)
FIGURE 4. Corophium colo n. sp., holotype male "a", 11.7 mm, AM P67529, upstream from Sentry Box Reach, Hawkesbury River, New South Wales. Scales for U1–3 represent 0.2 mm, other scales represent 0.5 mm.
FIGURE 3. Corophium colo n in A new species of Corophium from eastern Australian estuaries (Crustacea: Amphipoda: Corophiidae: Corophiinae: Corophiini)
FIGURE 3. Corophium colo n. sp., holotype male "a", 11.7 mm, AM P67529, upstream from Sentry Box Reach, Hawkesbury River, New South Wales. Scale represents 0.5 mm.
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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.