Book Chapters
Science Quality and Integrity
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
American Black Duck American Black Duck
The American black duck, with its brownish-black plumage and iridescent violet speculum, is one of the wariest of all the large dabbling ducks (Kortright 1942; Fig. 1). The black duck’s distribution is confined to eastern North America but extends into Manitoba. The black duck breeds in a variety of habitat types, from the brackish coastal marshes of North Carolina to the open boreal...
Authors
Jerry R. Longcore, David A. Clugston
Amphibians of the northern Great Plains Amphibians of the northern Great Plains
No cry of alarm has been sounded over the fate of amphibian populations in the northern grasslands of North America, yet huge percentages of prairie wetland habitat have been lost, and the destruction continues. Scarcely 30% of the original mixedgrass prairie remains in Nebraska, South Dakota, and North Dakota (See Table 1 in this chapter). If amphibian populations haven’t declined, why...
Authors
Diane L. Larson, Ned H. Euliss, Michael J. Lannoo, David M. Mushet
Anurans as indicators of wetland condition in the Prairie Pothole Region of North Dakota: an environmental monitoring and assessment program pilot project Anurans as indicators of wetland condition in the Prairie Pothole Region of North Dakota: an environmental monitoring and assessment program pilot project
No abstract available.
Authors
D.D. Bowers, D. E. Andersen, N.H. Euliss
Avian conservation research in the Mariana Islands, Western Pacific Ocean Avian conservation research in the Mariana Islands, Western Pacific Ocean
No abstract available.
Authors
G.H. Rodda, E.W. Campbell, S.R. Derrickson
Birds and landscape changes in Northeastern forests Birds and landscape changes in Northeastern forests
No abstract available.
Authors
Sam Droege
Brief notes on habitat geology and clay pipe habitat on Stellwagen Bank Brief notes on habitat geology and clay pipe habitat on Stellwagen Bank
In our studies of sea floor habitats, my colleagues and I use both biological and geological approaches. We call our studies “habitat geology,” a term coined by a biologist friend of mine. We view it as the study of sea floor materials and biological and geological processes that influence where species live. Some of the factors that we consider are the following:composition of the sea...
Authors
Page C. Valentine
California Wildlife-Habitat-Relationship System: a test in coastal scrub and annual grassland California Wildlife-Habitat-Relationship System: a test in coastal scrub and annual grassland
No abstract available at this time
Authors
J. A. Howell, R.H. Barrett
Campsite survey implications for managing designated campsites at Great Smoky Mountains National Park Campsite survey implications for managing designated campsites at Great Smoky Mountains National Park
Backcountry campsites and shelters in Great Smoky Mountains National Park were surveyed in 1993 as part of a new impact monitoring program. A total of 395 campsites and shelters were located and assessed, including 309 legal campsites located at 84 designated campgrounds, 68 illegal campsites, and 18 shelters. Primary campsite management problems identified by the survey include: (1)...
Authors
J. L. Marion, Y.-F. Leung
Carbon cycling in terrestrial environments: Chapter 17 Carbon cycling in terrestrial environments: Chapter 17
This chapter reviews a number of applications of isotopic techniques for the investigation of carbon cycling processes. Carbon dioxide (C02) is an important greenhouse gas. Its concentration in the atmosphere has increased from an estimated 270 ppm at the beginning of the industrial revolution to ∼ 360 ppm at present. Climatic conditions and atmospheric C02 concentration also influence...
Authors
Yang Wang, Thomas G. Huntington, Laurie J. Osher, Leonard I Wassenaar, Susan E. Trumbore, Ronald Amundson, Jennifer W. Harden, Diane M. McKnight, Sherry L. Schiff, George R. Aiken, W. Berry Lyons, Ramon O. Aravena, Jill Baron
Changing number of Canada geese wintering in different regions of the Atlantic Flyway Changing number of Canada geese wintering in different regions of the Atlantic Flyway
During the past 40 years, profound changes have occurred in the number of Canada geese (Branta canadensis) wintering in different regions of the Atlantic Flyway. To explain the declining number of wintering geese in the Chesapeake and Carolina regions and the increasing number in the mid-Atlantic region from 1984 to 1989, I tested several hypotheses concerning regional differences in...
Authors
J.B. Hestbeck
Contaminant effects on Great Lakes' fish-eating birds: a population perspective Contaminant effects on Great Lakes' fish-eating birds: a population perspective
Preventing environmental contaminants from reducing wildlife populations is the greatest concern in wildlife toxicology. In the Great Lakes, environmental contaminants have a history of reducing populations of many species of fish-eating birds. Endocrine effects may have contributed to declines in fish-eating bird populations, but the overriding harm was caused by DDE-induced eggshell...
Authors
G. H. Heinz