- Metric Name:  Unarmored threespine stickleback

- Data Vintage:  2021

- Unit Of Measure: Binary layer, 1 represents potential habitat

This is a dataset representing the boundaries for the Unarmored threespine stickleback (Gasterosteus aculeatus williamsoni) as understood by the United States Fish and Wildlife Service.

Creation Method: Contains the current range polygons as contained in the ECOS database; no generalization was performed and no data was intentionally omitted. Polygons are created by field staff utilizing the ECOS system to select range per office. The office datasets are then dissolved into one species range file and simplified using the Douglas-Peucker algorithm with a 0.0001 tolerance. The polygons were then transformed to a binary 30m raster layer. The polygons were then transformed to a binary 30m raster layer, where 1 represents potential habitat.

- Credits:  U.S. Fish and Wildlife Service (USFWS), Ecological Services Division

U.S. Fish and Wildlife Service (USFWS): 
Data disclaimer:  
The use of trade, product, industry or firm names is for informative purposes only and does not constitute an endorsement by the U.S. Fish and Wildlife Service. Link to non-Service Web sites do not imply any official U.S. Fish and Wildlife Service endorsement of the opinions or ideas expressed therein or guarantee the validity of the information provided. Base cartographic information used as part of the Wetlands Mapper has been provided through a license agreement with ESRI and the Department of the Interior.