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136 results for “Mid-Atlantic”
Coastal landcover change and the associated biomass trends in the mid-Atlantic sea-level rise hotspot
Climate change is driving worldwide landscape reorganization. In the coastal ecosystem, climate-driven sea level rise is forcing landward marsh migration and forest die-off, with potentially large consequences on coastal carbon balance. Here we used 30 m resolution Landsat images to study coastal landcover change from 1984 to 2020, and analyzed the Normalized Difference Vegetation Index (NDVI, a proxy of plant biomass) trend between 1984 and 2020 in the mid-Atlantic sea level rise hotspot. Our study region stretches across the entire Chesapeake Bay and the Delaware Bay to encompass all areas between 0-5m above sea level (total area ~12,500 km2). Specifically, the data package includes 3 raster datasets derived from the Landsat images. All datasets cover the identical mid-Atlantic region and have identical spatial resolution of 30 m. The two landcover datasets, named as 'Landcover_year1984.tif' and'Landcover_year2020.tif', respectively refer to landcover map in 1984 and 2020. Each of the maps has 7 landcover classes differentiated by different integers, and they are: water (0), farmland (1), urban area(2), upland forest (3), transition forest (4), marsh (5) and sandbar (6). Both landcover maps were generated using a combination of random forest classification and manual delineation, and the resultswere validated with high-resolution aerial photos and satellite images with an overall mapping accuracybeyond 90%. The third raster dataset, named as 'NDVItrend_1984to2020.tif', is the NDVI trend map. The value of each 30 by 30 m pixel in the map represents the slope of the NDVI trendline estimated using annual peak-growing season NDVI images acquired between 1984 and 2020. Negative values in the dataset represent decreases of NDVI (i.e. biomass loss, or ecosystem browning) from 1984 and 2020,whereas positive values correspond to an increase of NDVI (i.e. biomass gain, or ecosystem greening)between 1984 and 2020. The data package is completed.
Lateral and vertical forest retreat rate in the mid-Atlantic sea-level rise hotspot
Ghost forests consisting of dead trees adjacent to marshes are striking indicators of climate change. Here we quantify both the lateral and vertical rate of coastal forest retreat between 1984 and 2020 along the US mid-Atlantic coast. The study region includes areas between 0-5 m above sea level across the Chesapeake Bay and the adjacent Delaware Bay. Specifically, the data package includes 2 shapefile datasets derived from four decades of Landsat satellite observations of coastal treeline dynamics. The two datasets are generated on the same spatial-scale and have the same spatial resolution (0.075 km2), both stored as hexagon grids with a side length 170 m. Here we define "forest retreat" (as shown in the datasets as positive values) as the migration of coastal treeline landwards (lateral retreat) or upslope (vertical retreat), whereas "forest advance" (negative values) refers to treeline migration seawards (lateral advance) or downslope (vertical advance). The number '999999' in both datasets indicates areas of stable coastal treelines (i.e. no change) between 1984 and 2020.
Dataset for Clock drift corrections for large aperture ocean bottom seismometer arrays: application to the UPFLOW array in the mid-Atlantic Ocean
<p>Dataset from Clock drift corrections for large aperture ocean bottom seismometer arrays: application to the UPFLOW array in the mid-Atlantic Ocean DOI: 10.1093/gji/ggae354.</p> <p>This dataset includes the clock drift polynoms refered to jthe deployment date (jul day from 2022) and consecutive days up to the recovery date. Two types of formats.</p> <ol> <li>Txt files</li> <li>Python Pickle files with a Dictionary containing the NumPY polynom1D and additional information.</li> </ol>
Seismicity datasets of the 2022 seismic unrest at the North Mid-Atlantic Ridge
<p>These datasets contain information on the seismicity during the 2022 seismic unrest at the North Mid Atlantic Ridge. The seismic catalogs have been produced using seismological techniques dedicated to earthquake location and moment tensor inversion.</p> <p>Data Set 1 is the catalog of relocated earthquake, containing 61 events.<br> Note, that event nar_2022_09_26_14_49_21 is not been associated with one cluster and is therefore not shown in the final plot of relocated seismicity.</p> <p>Data Set 2 is a full moment tensor catalog, containing 77 events, with absolute centroid locations (i.e. out of the moment tensor inversion and not relocated).</p> <p>Data Set 3 is a deviatoric moment tensor catalog, containing 77 events, with absolute centroid locations (i.e. out of the moment tensor inversion and not relocated).</p>
mid-Atlantic_namelists
<p>namelist.wps is used to set up WRF preprocessing. </p> <p>namelist.input_NF is used to run a simulation without the wind farm parameterization.</p> <p>namelist.input_WFP is used to run a simulation with the wind farm parameterization.</p>
The Provincelands of Cape Cod National Seashore, Barnstable County, Massachusetts, USA. The reddish vegetation in the center of the photo is a cranberry (Vaccinium macrocarpon) bog, a wetland used for breeding by the Fowler's toad. The surrounding landscape is ideal for the Fowler's toad and supports one of the largest populations of this species in the United States. The landscape contains a patchwork of sand, pitch pine (Pinus rigida), scrub oak (Quercus ilicifolia), and dune grass (Ammophila breviligulata). Photo by Rebecca Flaherty. in Fowler's Toad (Anaxyrus fowleri) occupancy in the southern mid-Atlantic, USA
The Provincelands of Cape Cod National Seashore, Barnstable County, Massachusetts, USA. The reddish vegetation in the center of the photo is a cranberry (Vaccinium macrocarpon) bog, a wetland used for breeding by the Fowler's toad. The surrounding landscape is ideal for the Fowler's toad and supports one of the largest populations of this species in the United States. The landscape contains a patchwork of sand, pitch pine (Pinus rigida), scrub oak (Quercus ilicifolia), and dune grass (Ammophila breviligulata). Photo by Rebecca Flaherty.
Fig. 3 in Fowler's Toad (Anaxyrus fowleri) occupancy in the southern mid-Atlantic, USA
Fig. 3. Accumulation curve showing the maximum agricultural pesticide application rates at occupied sites. The maximum amount of pesticides applied at 90% of occupied sites was 165 kg/km2.
Fig. 1 in Fowler's Toad (Anaxyrus fowleri) occupancy in the southern mid-Atlantic, USA
Fig. 1. Map of calling anuran surveys conducted in Maryland and Virginia. Closed circles indicate sites occupied by A. fowleri and open circles indicate unoccupied sites.
Fig. 2 in Fowler's Toad (Anaxyrus fowleri) occupancy in the southern mid-Atlantic, USA
Fig. 2. Accumulation curve showing the maximum proportions of habitat variables found at each occupied site. Ninety-percent of occupied sites were covered by less than 0.25 development, 0.35 hay, and 0.50 deciduous forest cover.
Fig. 4 in Fowler's Toad (Anaxyrus fowleri) occupancy in the southern mid-Atlantic, USA
Fig. 4. Mean site occupancy and confidence intervals of A. fowleri in Virginia and Maryland from 1999–2012. Time series analysis indicates a 53% decrease in site occupancy, from 55.3% in 1999 to 29.5% in 2012.
FIGURE 5 in Dancing with the devil: courtship behaviour, mating evidences and population structure of the Mobula tarapacana (Myliobatiformes: Mobulidae) in a remote archipelago in the Equatorial Mid-Atlantic Ocean
FIGURE 5 | Distinct courtship behaviors of sicklefin devil rays Mobula tarapacana observed in the Saint Peter and Saint Paul Archipelago. A. Female being chased by two males. B. Male overlapping female. C. Male trying to overlap on female. D. Male overlaps the female with two more males chasing. E–F. Sequence of male following female.
FIGURE 3 in Dancing with the devil: courtship behaviour, mating evidences and population structure of the Mobula tarapacana (Myliobatiformes: Mobulidae) in a remote archipelago in the Equatorial Mid-Atlantic Ocean
FIGURE 3 | Female (grey) and male (black) Mobula tarapacana size distribution (disk width- DW, in meters) per month, in the Saint Peter and Saint Paul Archipelago (SPSPA), from December 2008 to June 2016. Red dashed line= size at maturity for males (White et al., 2006); blue dashed line= size at maturity for females (Notarbartolo di Sciara, 1988).
Fig. 2 in Detection of Ophidiomyces ophiodiicola at two mid-Atlantic natural areas in Anne Arundel County, Maryland and Fairfax County, Virginia, USA
Fig. 2. Location of Huntley Meadows Park (HMP) snake capture locations. Black markers = all samples positive; white markers = all samples negative; gray markers = samples either positive or negative.
Fig. 1 in Detection of Ophidiomyces ophiodiicola at two mid-Atlantic natural areas in Anne Arundel County, Maryland and Fairfax County, Virginia, USA
Fig. 1. The ventral scales of a symptomatic Northern Black Racer (Coluber constrictor) infected with Ophidiomyces ophiodiicola. This 41 g male was captured and swabbed on 20 May 2018 at Huntley Meadows Park. Its total length was 123.2 cm and snout-to-vent length was 94.6 cm. Photo by Eva Lorentz.
Fig. 3 in Detection of Ophidiomyces ophiodiicola at two mid-Atlantic natural areas in Anne Arundel County, Maryland and Fairfax County, Virginia, USA
Fig. 3. Location of Smithsonian Environmental Research Center (SERC) snake capture locations. Black markers = all samples positive; white markers = all samples negative; gray markers = samples either positive or negative.
Figure 8. Stenothoe menezgweni, DIVA 2 in Stenothoidae (Crustacea: Amphipoda) of hydrothermal vents and surroundings on the Mid-Atlantic Ridge, Azores Triple Junction zone
Figure 8. Stenothoe menezgweni, DIVA 2, PL26, holotype female. (1) Antenna 1; (2) scale as accessory flagellum; (3) antenna 2; (4) maxilliped; (5) gnathopod 1; (6) gnathopod 2; (7) pereiopod 3; (8) pereiopod 5. Scale bars: 100 mm.
Figure 1 in Stenothoidae (Crustacea: Amphipoda) of hydrothermal vents and surroundings on the Mid-Atlantic Ridge, Azores Triple Junction zone
Figure 1. Torometopa saldanhae, ATOS, PL115-13, holotype male. (1) Head; (2) antenna 1; (3) antenna 2; (4) mandible; (5) maxilla 1; (6) maxilla 2; (7) maxilliped; (8) gnathopod 1; (9) gnathopod 2; (10) pereiopod 3; (11) epimeral plate 3. Scale bars: 100 mm.
Figure 6 in Stenothoidae (Crustacea: Amphipoda) of hydrothermal vents and surroundings on the Mid-Atlantic Ridge, Azores Triple Junction zone
Figure 6. Stenothoe marvela, MARVEL, PL1199, holotype female. (1) Maxilliped; (2) pereiopod 4; (3) pereiopod 5; (4) pereiopod 6; (5) pereiopod 7; (6) uropod 1; (7) uropod 2; (8) uropod 3; (9) telson. Scale bars: 100 mm.
Figure 5 in Stenothoidae (Crustacea: Amphipoda) of hydrothermal vents and surroundings on the Mid-Atlantic Ridge, Azores Triple Junction zone
Figure 5. Stenothoe marvela, MARVEL, PL1199, holotype female. (1) Habitus; (2) antenna 1; (3) antenna 2; (4) mandible; (5) maxilla 1; (6) maxilla 2; (7) gnathopod 1; (8) gnathopod 2; (9) pereiopod 3; (10) epimeral plate 3. Scale bars: 100 mm.
Figure 3. Stenothoe divae, DIVA 1 in Stenothoidae (Crustacea: Amphipoda) of hydrothermal vents and surroundings on the Mid-Atlantic Ridge, Azores Triple Junction zone
Figure 3. Stenothoe divae, DIVA 1, DV11-5. (1, 2, 5, 6) Holotype male and (4) paratype female: (1) habitus; (2) gnathopod 1; (5) pereiopod 3; (6) epimeral plate 3. (3) Holotype male: gnathopod 2. (4) Paratype female: gnathopod 2. Scale bars: 100 mm.
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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
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.