Filters: Tags: Poplar Island (X)
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In order to allow for a comparison across years we visually digitized landcover of Poplar Island from a single image per year at a 1:1000 spatial extent with a minimum mapping unit of 300 square meters (no minimum dimensions aside from area). Images used to assign landcover were provided by the U.S. Army Corps of Engineers and were captured between July and October of their respective years. All images were 1 foot resolution.
Categories: Map;
Tags: Chesapeake Bay,
Chesapeake Bay,
Digitizing,
Ecology,
Geographic Information Systems,
These data describe the affects of elastic leg-loop harnesses on the reproductive success and behavior of adult Common Terns and the growth and behavior of juvenile Common Terns. These data support a USGS authored manuscript.
Categories: Data;
Tags: Chesapeake Bay,
Common Tern,
Ecology,
Poplar Island,
USGS Science Data Catalog (SDC),
In the fall of 2005, dead and dying great blue herons (Ardea herodias) exhibiting emaciation, lethargy, inability to fly and a hard abdomen (steatitis confirmed at necropsy) were observed at Poplar Island and nearby Coaches Island (Rattner et al. 2006). Birds were hand captured at or near impoundments (cells) and ponds that contained large algal blooms, and because of poor prognosis were euthanized. Seemingly healthy great blue herons were subsequently collected at Blackwater National Wildlife Refuge. Blood and fecal samples were collected, and submitted to Antech Diagnostics (Lake Success, New York) for Avian/Exotic Combined Blood Count, Comprehensive Avian Chemistries, Fecal Cultures and Vitamin E analysis. Liver...
Categories: Data;
Tags: Blackwater National Wildlife Refuge,
Blood Chemistry,
Environmental Health,
Fecal Analysis,
Great Blue Herons,
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,
This dataset is comprised of 3 .csv files related to the use of unmanned aerial systems over waterbird colonies. Specifically, data detail the disturbance observed in birds during flights, the time required for traditional ground surveys to be conducted, and the distance at which birds flush during traditional ground surveys.
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Chesapeake Bay,
Chesapeake Bay,
Human Impacts,
Poplar Island,
Species Biology,
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