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The Alaska Trumpeter Swan Survey was an aerial survey conducted by the U.S. Fish and Wildlife Service, Division of Migratory Bird Management, Alaska Region (MBM-AK) and partners to monitor the status of trumpeter swans (Cygnus buccinator) in Alaska. It was first conducted in 1968 and then repeated at five-year intervals from 1975 through 2015. The objectives of the survey were to estimate the abundance, distribution (1968–2005 only), and productivity of trumpeter swans in late summer, when the swans were dispersed on breeding territories and cygnets were large enough to be easily counted from the air. Estimates were obtained for the abundance of white swans (swans >1 year old), cygnets, and total swans, as well...
Categories: Data, Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: ANIMALS/VERTEBRATES, ANIMALS/VERTEBRATES, ANIMALS/VERTEBRATES, ANIMALS/VERTEBRATES, ANIMALS/VERTEBRATES, All tags...
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This dynamic data release presents an aquatic reflectance product with 20-meter spatial resolution derived from Sentinel-2 satellite imagery for the conterminous United States using the Atmospheric Correction for OLI “lite” (ACOLITE). Aquatic reflectance, noted Rhow in ACOLITE documentation, is defined here as unitless water-leaving radiance reflectance and represents the ratio of water-leaving radiance (units of watts per square meter per steradian per nanometer) to downwelling irradiance (units of watts per square meter per nanometer) multiplied by π. This is also known as remote sensing reflectance (units of per steradian) multiplied by π. These data are intended for use in remote sensing of water color and differ...
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The goal of this project was to: (a) archive the relevant AR5 model output data for the southwest region; (b) downscale daily temperature and precipitation to 12 X 12 km cell spatial resolution over the Southwest; (c) assess the precision (degree of agreement) of the simulated models; (d) assess the direction and magnitude of change in projections between AR4 and AR5, as well as assess projections of key extreme climatic events (i.e., extreme drought, extreme seasonal precipitation, extreme high and low temperature events); and (e) assess critical ecosystem impacts (i.e., climate water deficit and fire; hydrological condition of major river systems; impacts on highly valued species).
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From mid-September through October, most of the emperor goose (Chen canagica) population congregates in 7 lagoons on the north side of the Alaska Peninsula (Petersen and Gill 1982). Staging geese provide an opportunity to sample the population to determine an index of annual productivity because hatching year (HY) emperor geese retain gray/black plumage on their head and neck that contrasts with the complete white head plumage of adult geese (Pyle 2008, Baldassare 2014). This plumage difference is used to age classify geese (i.e. HY vs. adult) in aerial photographs. The objective of this study was to calculate an annual estimate of the proportion of HY emperor geese in the fall staging population. This estimate...
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Astragalus thompsonae (Thompson loco). Seed pods. Colorado Plateau. June 1952. Published in U.S.Geological Survey Bulletin 1030-M, figure 81. 1957.
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Allium acuminatum (Tapertip onion). Colorado Plateau. April 1955. Published in U. S.Geological Survey Bulletin 1030-M, figure 97. 1957.
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Calcium carbonate precipitate on organic detritus, Amargosa Desert. Sample from station A5. Inyo County, California - Nye County, Nevada. ca, 1965. Published in U.S. Geological Surrey Professional Paper 918, figure 5. 1975.
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Precipitate of biogenous origin occurring in place, Amargosa Desert, Sample from Station A5B. Inyo County, California - Nye County, Nevada. ca, 1965. Published in U.S. Geological Survey Professional Paper 918, figure 4. 1975.
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This data release is for all native bee and plant records collected at four national parks in Maryland and Virginia, 2021 and 2022. The purpose of the study was to document the floral resources and native bees that depend on them within variously-managed park grasslands, with the goal of providing managers with information that will help them maximize pollinator habitat while concurrently meeting other management objectives. The zip file "Bee_and_Plant_Metadata_NPS2021-2022.7z" contains two metadata records: 1) "Battlefield_Bees_metadata_08.07.2024.xml" contains all native bee data, and 2. "Battlefield_Plants_metadata_08.07.2024.xml" contains all plant data.
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Drainage ditch showing second peat layer in the marl. Manning. Orleans County, New York. June 1947.
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Aplopappus armeriodes (Goldenweed). Colorado Plateau. May 1950. Published in U.S. Geological Survey Bulletin 1030-M, figure 135. 1957.
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Oenothera caespitosa (Tufted evening-primrose). Colorado Plateau. May 1952. Published in U.S.Geological Survey Bulletin 1030-M, figure 113. 1957.
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Astragalus lonchocarpus (Long-seeded milkveteh). In flower. Colorado Plateau. June 1952.


    map background search result map search result map Assessment of Available Climate Models and Projections for the Southwest Region Drainage ditch, Manning, Orleans County, New York. 1947. Astragalus thompsonae (Thompson loco), Colorado Plateau, Colorado. 1952. Astragalus lonchocarpus (Long-seeded milkveteh), Colorado Plateau, Colorado. 1952. Allium acuminatum (Tapertip onion), Colorado Plateau, Colorado. 1955. Oenothera caespitosa (Tufted evening-primrose), Colorado Plateau, Colorado. 1952. Elymus salina (Saline wildrye), Colorado Plateau, Colorado. 1950. Aplopappus armeriodes (Goldenweed), Colorado Plateau, Colorado. 1950. Precipitate of biogenous origin, Amargosa Desert, Inyo County, California - Nye County, Nevada. Circa 1965. Calcium carbonate precipitate on organic detritus, Amargosa Desert,  Inyo County, California - Nye County, Nevada. Circa 1965. Sentinel-2 ACOLITE-DSF Aquatic Reflectance for the Conterminous United States (updated 2024-12-09) Alaska Trumpeter Swan Survey Data Release: Bee and plant inventory data from four national parks in Maryland and Virginia, USA, 2021–2022 Alaska Emperor Goose Photographic Age-Ratio Survey Drainage ditch, Manning, Orleans County, New York. 1947. Data Release: Bee and plant inventory data from four national parks in Maryland and Virginia, USA, 2021–2022 Precipitate of biogenous origin, Amargosa Desert, Inyo County, California - Nye County, Nevada. Circa 1965. Calcium carbonate precipitate on organic detritus, Amargosa Desert,  Inyo County, California - Nye County, Nevada. Circa 1965. Astragalus thompsonae (Thompson loco), Colorado Plateau, Colorado. 1952. Astragalus lonchocarpus (Long-seeded milkveteh), Colorado Plateau, Colorado. 1952. Allium acuminatum (Tapertip onion), Colorado Plateau, Colorado. 1955. Oenothera caespitosa (Tufted evening-primrose), Colorado Plateau, Colorado. 1952. Elymus salina (Saline wildrye), Colorado Plateau, Colorado. 1950. Aplopappus armeriodes (Goldenweed), Colorado Plateau, Colorado. 1950. Alaska Emperor Goose Photographic Age-Ratio Survey Assessment of Available Climate Models and Projections for the Southwest Region Alaska Trumpeter Swan Survey Sentinel-2 ACOLITE-DSF Aquatic Reflectance for the Conterminous United States (updated 2024-12-09)