Publications
Connecting Conservation Practices to Local Stream Health in the Chesapeake Bay Watershed
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: 903
Hawk migration over White Marsh, Maryland
The average number of hawks observed per hour in autumn migration between 1951-1954 and 1958-1961 at White Marsh, Maryland, was compared. The counts indicated that the status of the ten species observed may be divided into three categories: (1) relatively stable species (red-tailed hawk), (2) declining species (sparrow hawk, red-shouldered hawk, osprey, marsh hawk, and broad-winged hawk), and (3)
Authors
C.D. Hackman, C. J. Henny
Distribution of the fiddler crab (Uca minax) in relation to marsh plants within a Virginia estuary
The distribution and abundance of the red-jointed fiddler crab, Uca minax, was related to the distribution of marsh plants within a Virginia estuary. The crab was found in association with 15 species of marsh phanerogams, occurring with five plant species more than 20 percent of the time. These plants were Spartina alterniflora, Scirpus robustus, Distichlis spicata, Spartina patens, and Spartina c
Authors
J.A. Kerwin
Synecology of a Virginia salt marsh
In the spring and summer of 1964 a salt marsh in Gloucester County, Virginia, was analyzed using random quadrat sampling. Synthetic treatments were employed to evaluate data and were correlated with observed differences in elevation. Floristic data indicate the Virginia salt marshes show closer similarity to marshes north of Chesapeake Bay than those south of Chesapeake Bay. Correlation of florist
Authors
J.A. Kerwin, R. Pedigo
Evaluation of a hand-reared mallard release program in Maryland
No abstract available.
Authors
Vernon D. Stotts, A. D. Geis, G.V. Burger
Effects of urban development on floods in northern Virginia
Graphical and mathematical relations are presented to estimate the flood-peak magnitudes having recurrence intervals ranging up to 100 years for drainage basins with various degrees of urban or suburban development. Five independent variables are required for use of the relations. They are the size, length, and slope of the basin, which may be measured from maps, and the percentage of impervious s
Authors
Daniel G. Anderson
Incidence of malaria in a wintering population of canvasbacks (Aythya valisineria) on Chesapeake Bay
Canvasback ducks wintering on Chesapeake Bay had a 6% incidence of Leucocytozoon sirnondi and 2% incidence of Haemoproteus. Sub-inoculation of whole blood into Pekin ducklings produced a Plasmodium infection rate of 31%. Females were more frequently infected (12/22) than males (15/68). The parasite was identified as P. circumflexum.
Authors
R. M. Kocan, J.O. Knisley
An outbreak of fowl cholera in waterfowl on the Chesapeake Bay
An outbreak of fowl cholera (Pasteurella multocida infection) occurred in waterfowl wintering on the Chesapeake Bay during February to March 1970. Losses were primarily confined to sea ducks: oldsquaws (Clangula hyemalis), white-winged scoters (Melanitta deglandi), goldeneyes (Bucephala clangula), and buffleheads (Bucephala albeola).
Authors
L. N. Locke, V. Stotts, G. Wolfhard
The greater shearwater in Maryland
No abstract available.
Authors
D.M. Bridge, S. Hundt, W.T. Van Velzen, A.C. Van Velzen