Filters: Tags: Least tern (X)
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These videos show a pair of common terns usurping a least tern nest with chicks. These data support a paired USGS authored manuscript.
Categories: Data;
Tags: Chesapeake Bay,
Ecology,
Poplar Island,
USGS Science Data Catalog (SDC),
biota,
LeastTernForagingArea is an ESRI SDE Feature Class showing an area which generally is associated with a nesting area and which provides a source of food for Least Terns. Appropriate habitat includes shallow water areas in lakes, ponds, and river backwater areas with abundant small fish populations. These areas generally are within one-half mile of the nesting area. On large irrigation reservoirs, these areas fluctuate with changing water levels. This information was derived from field personnel. A variety of data capture techniques were used including drawing on mylar overlays at 1:50,000 scale USGS county mapsheets and implementation of the SmartBoard Interactive Whiteboard using stand-up, real-time digitizing...
LeastTernProductionArea is an ESRI SDE Feature Class showing an area that includes nesting habitat and contains one or more active or previously active and aggressively defended territories. This information was derived from field personnel. A variety of data capture techniques were used including drawing on mylar overlays at 1:50,000 scale USGS county mapsheets and implementation of the SmartBoard Interactive Whiteboard using stand-up, real-time digitizing at various scales (Cowardin, M., M. Flenner. March 2003. Maximizing Mapping Resources. GeoWorld 16(3):32-35). Dataset was acquired from a third party distributor who obtained it from CDOW in January 2011. The authoritative data source is available on ArcGIS.com...
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