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The USGS publishes peer-reviewed reports and journal articles which are used by Chesapeake Bay Program resource managers and policy makers to make science-based decisions for ecosystem conservation and restoration. Use the Search box below to find publications on selected topics.

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Filter Total Items: 946

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January 1, 1976

Comments on recent canvasback habitat trends and threats on Chesapeake Bay Comments on recent canvasback habitat trends and threats on Chesapeake Bay

During the last 22 years, the North American winter population of canvasbacks has fluctuated from 481,000 in 1955 to 179,000 in 1972. The Chesapeake Bay population has averaged 33 percent of the North American population and 64 percent of the Atlantic Flyway population. In Maryland, significant annual fluctuations have been recorded between the eastern and western shore of Chesapeake Bay...

Authors

Matthew C. Perry

Ecosystems Mission Area, Eastern Ecological Science Center, Chesapeake Bay Activities

January 1, 1976

The seventy-sixth Audubon Christmas bird count. Delaware, Maryland, D.C., Virginia The seventy-sixth Audubon Christmas bird count. Delaware, Maryland, D.C., Virginia

No abstract available.

Authors

D. Bystrak

Ecosystems Mission Area, Eastern Ecological Science Center, Chesapeake Bay Activities

January 1, 1976

The seventy-sixth Audubon Christmas bird count. 350. Back Bay National Wildlife Refuge, Va The seventy-sixth Audubon Christmas bird count. 350. Back Bay National Wildlife Refuge, Va

No abstract available.

Authors

P. Sykes

Ecosystems Mission Area, Eastern Ecological Science Center, Chesapeake Bay Activities

January 1, 1976

[Book review] Birds and Marshes of the Chesapeake Bay Country, by Brooke Meanley [Book review] Birds and Marshes of the Chesapeake Bay Country, by Brooke Meanley

No abstract available.

Authors

C.S. Robbins

Ecosystems Mission Area, Eastern Ecological Science Center, Chesapeake Bay Activities

January 1, 1976

Chemical pollutants in field-collected canvasback tissues, eggs, and food materials Chemical pollutants in field-collected canvasback tissues, eggs, and food materials

In 1972 studies began on the levels of environmental pollutants in canvasback tissues, eggs, and food items. The purpose of the studies were to determine if the levels of toxic chemicals found in canvasbacks were of the magnitude to cause problems affecting reproduction and survival. Overall, levels of organochlorine pesticides and PCB's were low in canvasbacks and their eggs. Some...

Authors

Donald H. White, M. P. Dieter, Rey C. Stendell

Ecosystems Mission Area, Chesapeake Bay Activities, Eastern Ecological Science Center

January 1, 1975

[Book review] Birds and Marshes of the Chesapeake Bay Country, by B. Meanley [Book review] Birds and Marshes of the Chesapeake Bay Country, by B. Meanley

No abstract available.

Authors

Matthew C. Perry

Ecosystems Mission Area, Eastern Ecological Science Center, Chesapeake Bay Activities

January 1, 1975

Two more yellow-headed blackbirds banded near Laurel, Maryland Two more yellow-headed blackbirds banded near Laurel, Maryland

No abstract available.

Authors

B. Meanley

Ecosystems Mission Area, Eastern Ecological Science Center, Chesapeake Bay Activities

January 1, 1975

Effects of environmental pollutants on Connecticut and Maryland ospreys Effects of environmental pollutants on Connecticut and Maryland ospreys

Osprey (Pandion haliaetus) eggs were exchanged between Connecticut and Maryland osprey nests in 1968 and 1969 to test the hypothesis that the decline in reproductive success of Connecticut ospreys was caused by something within the external environment of the eggs. Incubation of 30 Connecticut osprey eggs by Maryland ospreys did not improve the hatching rate. Forty-five Maryland osprey...

Authors

Stanley N. Wiemeyer, P.R. Spitzer, W.C. Krantz, T. G. Lamont, E. Cromartie

Ecosystems Mission Area, Eastern Ecological Science Center, Chesapeake Bay Activities

January 1, 1975

Osprey productivity during the mid-fifties in a portion of Chesapeake Bay Osprey productivity during the mid-fifties in a portion of Chesapeake Bay

No abstract available.

Authors

Charles J. Henny, Vernon D. Stotts

Ecosystems Mission Area, Eastern Ecological Science Center, Chesapeake Bay Activities

January 1, 1975

Early nesting of king rail in Dorchester County, Maryland Early nesting of king rail in Dorchester County, Maryland

No abstract available.

Authors

B. Meanley

Ecosystems Mission Area, Eastern Ecological Science Center, Chesapeake Bay Activities

January 1, 1975

The seventy-fifth Audubon Christmas bird count. Delaware, Maryland, District of Columbia, Virginia The seventy-fifth Audubon Christmas bird count. Delaware, Maryland, District of Columbia, Virginia

No abstract available.

Authors

D. Bystrak

Ecosystems Mission Area, Eastern Ecological Science Center, Chesapeake Bay Activities

January 1, 1975

Geohydrologic reconnaissance of the upper Potomac River basin Geohydrologic reconnaissance of the upper Potomac River basin

The upper Potomac River basin, in the central Appalachian region in Pennsylvania, Maryland, Virginia, and West Virginia, is a humid temperate region of diverse fractured rocks. Three geohydrologic terranes, which underlie large parts of the basin, are described in terms of their aquifer characteristics and of the magnitude and duration of their base runoff: (1) fractured rock having a...

Authors

Frank W. Trainer, Frank A. Watkins

Chesapeake Bay Activities