Spatial Extent of Data

USGS Data Source

Alaska Science Center

USGS Thesaurus Keywords

Animal and plant census, Remote sensing, Field inventory and monitoring

ISO 19115 Topic Category

Environment, Biota

Other Subject Keywords

Animals/Invertebrates, Seagrass, Monocots, Coastal ecosystems, Marine ecosystems, Marine environment monitoring, Estuarine ecosystems, Zostera marina, Angiosperms (flowering plants), Seagrass beds, Eelgrass, Macroalgae (seaweeds)

Place Keywords

Izembek National Wildlife Refuge, Bering Sea, Alaska, Becharof National Wildlife Refuge, Nunivak Island, Alaska Peninsula National Wildlife Refuge, Gulf of Alaska, Yukon Delta National Wildlife Refuge

Mapping Data of Eelgrass (Zostera marina) Distribution, Alaska Peninsula and Nunivak Island

Provided here are two vector geospatial datasets that characterize the distribution of: (1) eelgrass (Zostera marina) and (2) seaweeds in waters adjacent to four National Wildlife Refuges in Alaska (Izembek NWR, Alaska Peninsula-Becharof NWR, Alaska Maritime NWR, and Yukon Delta NWR). These data were derived from satellite imagery (Landsat 5 TM and Landsat 7 ETM+) acquired on four different days (2002-08-02, 2006-07-20, 2007-06-04, 2009-08-04). After pre-processing, imagery was classified into land cover categories (eelgrass, seaweed, mud/sand, and channel). The eelgrass and seaweed distribution data were then extracted from the raster grid and converted to vector data.

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Author(s)	David H Ward , K.R. Hogrefe
Publication Date	2022-06-27
Beginning Date of Data	2002
Ending Date of Data	2009
Data Contact	U.S. Geological Survey, Alaska Science Center
DOI	https://doi.org/10.5066/P9WEK4JI
Citation	Ward, D.H., and Hogrefe, K., 2022, Mapping Data of Eelgrass (Zostera marina) Distribution, Alaska Peninsula and Nunivak Island: U.S. Geological Survey data release, https://doi.org/10.5066/P9WEK4JI.
Metadata Contact	U.S. Geological Survey, Alaska Science Center
Metadata Date	2022-10-06
Related Publication	There was no related primary publication associated with this data release.
Citations of these data	Loading https://doi.org/10.1007/BF02803661 Loading https://doi.org/10.3133/ofr20201035 Loading https://doi.org/10.3133/ofr20201080 Loading https://doi.org/10.3133/ofr20201114 Loading https://doi.org/10.3133/ofr20201143 Loading https://doi.org/10.3133/ofr20201144 Loading https://doi.org/10.3133/ofr20211034 Loading https://doi.org/10.3133/ofr20221004 Loading https://doi.org/10.3133/ofr20221078
Access	public
License	http://www.usa.gov/publicdomain/label/1.0/

Harvest Source: Alaska Science Center
Harvest Date: 2025-03-04T04:02:45.918Z