Publications
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: 901
Muskrat investigations on the Blackwater National Wildlife Refuge, Maryland, 1941-1945
1. Approximately 5,233 acres of tidal marsh on the Blackwater National Wildlife Refuge in Maryland were trapped by Fish and Wildlife Service personnel from 1941-1945, with the closely controlled operations yielding 23,539 muskrats; 13,421 (57 per cent) were males and 10,090 (43 per cent) were females, a sex ratio of 133: 100. This preponderance of males was consistently maintained throughout the e
Authors
H.L. Dozier, M.H. Markely, L. M. Llewellyn
Fluctuations in the abundance of the blue crab in Chesapeake Bay
No abstract available.
Authors
John Cleary Pearson
Vegetation of the Patuxent Research Refuge, Maryland
No abstract available.
Authors
Neil Hotchkiss, Robert E. Stewart
Recent observations on Maryland birds
In the course of working on a study of the 'Geographical and Ecological Distribution of the Birds of Maryland,' a considerable number of records of occurrence have been obtained, which have helped to clarify the status of many Maryland birds. Some of these records are new for the state and many serve to extend the known breeding or wintering ranges within Maryland. Others will serve as additional
Authors
R. E. Stewart, C.S. Robbins
Christmas bird counts - 1946. Southeastern Worcester County, Maryland
No abstract available.
Authors
J.W. Aldrich, D.L. Allen, I.R. Barnes, J.H. Buckalew, M.M. Carpenter, I.N. Gabrielson, L.C. Goldman, R.B. Overington, R.T. Peterson, C.S. Robbins, R. E. Stewart
Effects on forest birds of DDT used for gypsy moth control in Pennsylvania
1. Systematic censuses of the birds on three 40-acre tracts of forest near Scranton, Lackawanna County, Pennsylvania, were made between May 1 and June 27, 1945, to determine the breeding populations....2. Between May 24 and June 1 a 600-acre area enclosing the first (Mile Square) was sprayed by airplane with DDT in oil solution at 5 pounds per acre. On June 9 a 350-acre area enclosing the second t
Authors
N. Hotchkiss, R.H. Pough