PaCSEA Bird Survey Summary Data, 2011-2012
Description
This data set was created as a summary layer to more easily represent the original PaCSEA bird transect counts at a consistent scale across the transect for display within MarineCadastre.gov. These map layers display the density of birds (birds/sq km) detected in the Pacific Continental Shelf Environmental Assessment (PaCSEA) 2011 â 2012. PaCSEA involved repeated low-elevation aerial surveys along 32 broad-scale transects to quantify seabirds and marine mammals from shore to the 2000-m isobath. Transects were spaced 15 nautical miles (nmi) apart, between Fort Bragg, California (39° N) and Grays Harbor, Washington (47° N). Surveys were conducted from fixed wing aircraft flying 160 km/h at 60-m above sea level. All birds and marine mammals within a 150 m transect (75 m per side) were counted. Six complete surveys were conducted with 3 surveys each year (winter, summer, and fall). While the actual area sampled varied slightly among surveys, this summary representation uses 6.8 x 6.8 km polygons to display estimates of bird density for all surveys. The actual transect areas are also included in a single file for all 6 surveys. Please consult the metadata file for information and file access for the original study products.
Resources
| Name |
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Description |
Link |
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0 |
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https://www.sciencebase.gov/catalog/item/557734dce4b032353cba34c9 |
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0 |
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https://geoplatform.maps.arcgis.com/home/item.html?id=4d3a64de8daf4b7fa3c106dbb862ebde |
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0 |
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https://gis.boem.gov/arcgis/rest/services/BOEM_BSEE/USGS_BOEM_PACSEA_SEABIRD_DENSITY/MapServer |
Tags
- pacific-northwest
- biota-theme
- united-states
- seabirds
- california
- washington
- aerial-survey
- oregon