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
Territorial behavior, pesticides, and the population ecology of red-shouldered hawks in central Maryland, 1943-1971
A breeding population of red—shouldered hawks (Buteo lineatus) along the Patuxent River in central Maryland was studied during the interval 1943—71. Numbers of breeding pairs remained unchanged or increased on the PWRC (Patuxent Wildlife Research Center) and an adjoining area where habibat was not altered. A reduction in breeding pairs occurred on the third study area where large portions of the h
Authors
Charles J. Henny, F. C. Schmid, Elwood M. Martin, L. L. Hood
The seventy-third Christmas bird count. 327. Little Creek, Va
No abstract available.
Authors
P. Sykes
The seventy-third Christmas bird count. 314. Back Bay National Wildlife Refuge, Va
No abstract available.
Authors
P. Sykes
The seventy-third Christmas bird count. [Untitled. Summary for Delaware, Maryland, District of Columbia, and Virginia]
No abstract available.
Authors
D. Bystrak
Accidental mortality of diving ducks at St. Marys College, St. Marys, Maryland
No abstract available.
Authors
L. N. Locke
Reproductive success of Potomac River ospreys--1970
Osprey reproductive success on the Potomac River during 1970 is described. Thirty-five percent of the accessible active nests fledged young and only 0.70 young were fledged per active nest. Egg failure was the major cause of poor success. Reproduction was below that considered normal for a stable population.
Authors
Stanley N. Wiemeyer
Thirty-fifth breeding bird census: 10. Upland tulip-tree_maple-oak forest
No abstract available.
Authors
C.S. Robbins
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