Publications
This list of publications includes peer-review journal articles, official USGS publications series, reports and more authored by scientists in the Ecosystems Mission Area. A database of all USGS publications, with advanced search features, can be accessed at the USGS Publications Warehouse.
Filter Total Items: 41771
Research, management, and status of the osprey in North America
Osprey populations were studied throughout North America during the last decade as a result of dramatic declines reported along the North Atlantic Coast in the1950s and early 1960s. Researchers used banding, localized studies, aerial surveys, and pesticide analyses to identify factors influencing regional populations. Declining populations showed extremely poor production, contamination by envir
Authors
C. J. Henny
The study of chemical communication in free-ranging mammals
No abstract available.
Authors
L. D. Mech, R.P. Peters
Identification of potential harvest units in the United States of the American woodcock
Potential harvest units were examined in the United States for American woodcock (Philohela minor) based on the distribution of both direct and indirect recoveries of preseason bandings. Unweighted and weighted recoveries were used to definefour sets of units with a minimal interchange of birds. With a configuration that conforms to the existing boundary between the Atlantic and Mississippi wate
Authors
R.A. Coon, T.J. Dwyer, J.W. Artmann
Woodcock utilization of commercial timberlands in the northeast
This paper reports the results of studies in Maine (1975-77) and New Brunswick (1974) on the utilization of commercial timber areas by woodcock (Philohela minor). Openings created by logging operations were utilized for singing grounds and nocturnal roosting habitat. Singing male densities of 3.4 birds/1oo ha on were found on New Brunswick elearcuts, 0.24 birds/IOO ha on northern Maine elearcuts
Authors
C.P. Nicholson, S. Homer, R.B. Owen, T.G. Dilworth
Impact of estuarine pollution on birds
Pollution of estuaries affects bird populations indirectly through changes in habitat and food supply. The multi-factor pollution of Chesapeake Bay has resulted in diminution of submerged aquatic plants and consequent change in food habits of the canvasback duck. Although dredge-spoil operations can improve wildlife habitat, they often result in its demise. Pollution of estuaries also affects b
Authors
L. J. Blus, Stanley N. Wiemeyer, J.A. Kerwin, R.C. Stendell, H. M. Ohlendorf, L. F. Stickel
Reproductive success of Potomac River ospreys, 1971
No abstract available.
Authors
Stanley N. Wiemeyer
Population trend and winter deer consumption in a Minnesota wolf pack
No abstract available.
Authors
L. D. Mech
Planning for the future survival of the California condor
No abstract available.
Authors
S.R. Wilbur
Quantitative analysis of American woodcock nest and brood habitat
Sixteen nest and 19 brood sites of American woodcock (Philohela minoI) were examined in northern lower Michigan between 15 April and 15 June 1974 to determine habitat structure associated with these sites. Woodcock hens utilized young, second-growth forest stands which were similar in species composition for both nesting and brood rearing. A multi-varIate discriminant function analysis revealed a
Authors
A. Bourgeois
Earthworm populations as related to woodcock habitat usage in Central Maine
Lumbricid earthworms were sampled 'on two central Maine study areas between late April and early September, 1974, to relate earthworm abundance to use of feeding covers by American woodcock(Philoheli minor). On sampling days, occurring at 2 to 3 week intervals, a formalin solution was applied to thirty O.25m areas in heavjly, commonly, and rarely used woodcock covers (5 samples/type of feedjngcove
Authors
J.W. Reynolds, W.B. Krohn, G.A. Hordan