Book Chapters
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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse more than 5,500 book chapters authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
Filter Total Items: 6197
Black duck production workshop Black duck production workshop
No abstract available.
Authors
D.G. Krementz, A. Reed
Bottomland forest composition and seedling diversity Bottomland forest composition and seedling diversity
No abstract available.
Authors
S.W. Seagle, S-Y. Liang
Breeding habitat workshop Breeding habitat workshop
No abstract available.
Authors
Keith McAloney, J. R. Longcore
Caddisflies (Trichoptera) of the Yukon, with analysis of the Beringian and Holarctic species of North America Caddisflies (Trichoptera) of the Yukon, with analysis of the Beringian and Holarctic species of North America
No abstract available at this time
Authors
G.B. Wiggins, C.R. Parker
California salmon and steelhead: Beyond the crossroads California salmon and steelhead: Beyond the crossroads
Virtually all California salmon (Oncorhynchus spp.) and steelhead (O. mykiss) stocks have declined to record or near-record low levels during 1980-95. Escapement of naturally spawning Klamath and Sacramento basin fall-run chinook salmon (O. tshawytscha) stocks has fallen consistently below the goals of 35,000 adults (Klamath) and 120,000 adults (Sacramento) established by the Pacific...
Authors
Terry J. Mills, Dennis R. McEwan, Mark R. Jennings
Causes of Mississippi sandhill crane mortality in captivity 1984-95 Causes of Mississippi sandhill crane mortality in captivity 1984-95
During 1984-95, 111 deaths were documented in the captive flock of Mississippi sandhill cranes (Grus canadensis pulla) housed at the Paluxent Wildlife Research Center. Trauma was the leading cause of death (37%), followed by infectious/parasitic diseases (25%), anatomic abnormalities (15%), and miscellaneous (8%). No positive diagnosis of cause of death was found in 19% of the necropsies...
Authors
Glenn H. Olsen, G.F. Gee
Characteristics of some black duck nest sites in Maine Characteristics of some black duck nest sites in Maine
A standard method for characterizing nest sites and concealment (visibility of orange decoy and percent overhead cover measured by densiometer) was used to obtain characteristics of 36 nest sites of black ducks in Maine, 1978-89. Nest locations were represented by cutover areas (10), islands (6), bogmat (5), emergent meadow (5), emergent wetland (3), stream floodplain (3), hardwood...
Authors
J. R. Longcore, D.G. McAuley, J.K. Ringelman
Comparative productivity of American black ducks and mallards breedings on the Chesapeake Bay Comparative productivity of American black ducks and mallards breedings on the Chesapeake Bay
No abstract available.
Authors
D.G. Krementz, Daniel B. Stotts, Vernon D. Stotts, G.W. Pendleton
Creation, management, and research on lakes and ponds at Patuxent Research Refuge Creation, management, and research on lakes and ponds at Patuxent Research Refuge
From 19391966, approximately 450 acres of impoundments were created for recreational and wildlife conservation purposes at Patuxent Research Refuge. Impoundments were of three major designs: impounded ravines, excavated basins, and impounded swamps. Over 50 species of wetland plants were transplanted to impoundments of Patuxent to determine best species for relatively infertile waters...
Authors
Matthew C. Perry
Deer management and the concept of overabundance Deer management and the concept of overabundance
No abstract available.
Authors
W.J. McShea, H.B. Underwood, J.H. Rappole
Densities of breeding American black ducks in southcentral Maine: 1958-60 and 1978-80 Densities of breeding American black ducks in southcentral Maine: 1958-60 and 1978-80
Numbers of wetlands and amount of surface water (ha) within a 105 km2 area increased substantially between 1958-60 and 1978-80 in southcentral Maine. Conversely, in 1978-80 mean numbers of black duck pairs (11.9/100 ha surface water) and broods (10.8/100 ha surface water) were lower than for 1958-60 (pairs = 23.3; broods = 13.3) for wetlands surveyed in both periods. Differences in pairs...
Authors
J. R. Longcore, J.K. Ringelman