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: 6063
Captive condor propagation and recommended release procedures
No abstract available.
Authors
R.C. Erickson, J. W. Carpenter
Centrolenella fleischmanni (ranita de vidrio, glass frog)
No abstract available.
Authors
R.W. McDiarmid
Checklist of reptiles and amphibians
No abstract available at this time
Authors
N.J. Scott, J.M. Savage, D.C. Robinson
Didelphis marsupialis (raposa, zarigueya, zorro pelon, zorro mochila, opossum)
No abstract available.
Authors
A.L. Gardner
Distribution and abundance of nesting ospreys in the United States
Nesting Ospreys (Pandion haliaetus) in the contiguous United States now number about 8,000 pairs. Five regional populations exist (in order of abundance): Atlantic Coast, Florida and Gulf Coast, Pacific Northwest, Western Interior, and Great Lakes. Pesticides severely impacted the populations in the northern portion of the Atlantic Coast (Boston to Cape May) and the Great Lakes, but both are now r
Authors
C. J. Henny
Distribution and migration of seaside sparrows
The majority of the nine presently recognized races of the Seaside Sparrow (Ammospiza maritima) are so similar to neighboring races that individual birds outside their known breeding range cannot be subspecifically identified with certainty. The northern race, A. m. maritima, is partially migratory, with most individuals departing in autumn from Chesapeake Bay and from all the coastal marshes tha
Authors
C.S. Robbins
Effects of oil on avian reproduction: A review and discussion
Oil pollution is a highly visible form of environmental contamination that affects avian reproduction in a variety of ways. Plumage oiling causes widespread and locally severe mortality of adult birds. Egg oiling can be a serious hazard for bird embryos but only a few field observationons of this have been reported. Oil ingestion seldom kills birds directly but it causes sublethal change~ in th
Authors
P.H. Albers
Eggshell thickness and DDE residue levels in vlulture eggs
Post-DDT (post-1947) eggshell thickness was examined in samples of Turkey Vulture, Black Vulture, and Crested Caracara eggs from several parts of the United States. Highly significant post-DDT decreases in eggshell thickness indices of at least 10 percent were found in Turkey Vulture eggs from California, Florida, and Texas and in Black Vulture eggs from Texas and Florida. Over one-third of the
Authors
L.F. Kiff, David B. Peakall, M.L. Morrison, S.R. Wilbur
Environmental contaminants in tissues, foods, and feces of California condors
Two wild California Condors contained moderate to high levels of DDE in their tissues. The levels found could be high enough to cause reproductive problems in adult condors, if the assumption is made that condors are as susceptible to DDE as many other species of birds of prey. Other organochlorines occurred at low levels and probably were not high enough to cause deleterious effects. Metal resi
Authors
Stanley N. Wiemeyer, A. J. Krynitsky, S.R. Wilbur
Environmental factors that influence prescribed burning in the Northern Plains
Several environmental conditions were recorded and analyzed for 192 prescribed burns in the Northern Great Plains. The purpose of these burns was to improve wildlife habitat and manipulate native prairie vegetation. All of the fires occurred in grassland and shrubsteppe vegetation types. Fuels were predominantly grasses and forbs intermixed with patches of shrubs. Nearly all of the fuels were 50 p
Authors
A.D. Kruse, K.F. Higgins, J.L. Piehl
Furunculosis : pathogenicity, mechanisms of bacterial virulence, and the immunological response of fish to Aeromonas salmonicida
No abstract available at this time
Authors
R.C. Cipriano