Filters: Tags: Great blue heron (X)
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GBHeronForagingArea is an ESRI SDE Feature Class showing Foraging Areas for Great Blue Heron (Ardea herodias) in Colorado. Foraging Areas are defined as areas where Great Blue Herons are known to feed. Appropriate habitat includes shallow water areas associated with reservoirs, lakes, ponds, streams, and backwater areas of major rivers with abundant fish populations. On large irrigation reservoirs, these areas will 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...
GBHeronHistoricNestArea is an ESRI SDE Feature Class showing Historic Nesting Areas for Great Blue Heron (Ardea herodias) in Colorado. Historic Nesting Areas are defined as a formerly active nesting area that has been destroyed or in which no courtship, breeding or brooding activity has been observed at any time in the last five years. 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...
GBHeronNestingArea is an ESRI SDE Feature Classshowing Nesting Areas for Great Blue Heron (Ardea herodias) in Colorado. Nesting Areas are defined as individual trees or groups of trees containing nest platforms, and a buffer zone extending 500 meters around a known active or inactive nest site. Nest platforms are usually located in dominant trees associated with riparian habitats. 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...
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