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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.
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.
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Epilogue: Lessons yet to be learned Epilogue: Lessons yet to be learned
This chapter provides a summary of the book Ecotoxicology of Amphibians and Reptiles edited by Sparling, Linder and Bishop. In addition to the comparative lack of information on effects and residue burdens of known contaminants in amphibians and reptiles, there is a plethora of new chemicals being produced and released into the environment on which no data exist at all. According to the
Authors
D. W. Sparling, C.A. Bishop, B.D. Pauli, S. Money
Establishment of warm season grasses with and without the use of compost soil amendments Establishment of warm season grasses with and without the use of compost soil amendments
Two compost materials (COMPRO and LEAFGRO) were evaluated as soil amendments to enhance wildlife habitats, while maintaining optimal floral and faunal biodiversity. Special emphasis was placed on the role of compost in the establishment and retention of native warm season grasses (Andropogon gerardi, Schizachyrium scoparium, and Sorghastrum nutans). This study was conducted at two sites...
Authors
Matthew C. Perry, P.C. Osenton, G.A. Gough, E.J.R. Lohnes
Estimates of population change in selected species of tropical birds using mark-recapture data Estimates of population change in selected species of tropical birds using mark-recapture data
The population biology of tropical birds is known for a only small sample of species; especially in the Neotropics. Robust estimates of parameters such as survival rate and finite rate of population change (A) are crucial for conservation purposes and useful for studies of avian life histories. We used methods developed by Pradel (1996, Biometrics 52:703-709) to estimate A for 10 species...
Authors
J. Brawn, J.D. Nichols, J.E. Hines, J. Nesbitt
Estimating survival of neotropical-nearctic migratory birds: Are they dead or just dispersed? Estimating survival of neotropical-nearctic migratory birds: Are they dead or just dispersed?
The most common method for estimating adult survival in site specific demographic studies of Neotropical-Nearctic migratory bird populations is by measuring the return rate of marked individuals. Return rate historically has been defined as the ratio of resighted birds to the total number banded (i.e., with bands on) the prior year, and has been used as a 'minimum number known alive'...
Authors
M.R. Marshall, R.R. Wilson, R.J. Cooper
Family Rhabdoviridae Family Rhabdoviridae
Abstract not available
Authors
P.J. Walker, A. Benmansour, C.H. Calisher, R. Dietzgen, R.X. Fang, A.O. Jackson, G. Kurath, J.C. Leong, S. Nadin-Davis, R.B. Tesh, N. Tordo
Floods, flood control, and bottomland vegetation Floods, flood control, and bottomland vegetation
Bottomland plant communities are typically dominated by the effects of floods. Floods create the surfaces on which plants become established, transport seeds and nutrients, and remove establish plants. Floods provide a moisture subsidy that allows development of bottomland forests in arid regions and produce anoxic soils, which can control bottomland plant distribution in humid regions...
Authors
Jonathan M. Friedman, Gregor T. Auble
Floristic summary of North American plant species in the air pollution literature Floristic summary of North American plant species in the air pollution literature
Notes are given on a project to create a database of bibliographic information, abstracts and keywords for publications on the biological effects of gaseous and heavy metal air pollution on plants and lichens.
Authors
J. P. Bennett
Golden-rumped elephant-shrew Golden-rumped elephant-shrew
No abstract available at this time
Authors
G. B. Rathbun, S.N. Kyalo
Grassland birds: An overview of threats and recommended management strategies Grassland birds: An overview of threats and recommended management strategies
Grassland ecosystems are dependent on periodic disturbance for habitat maintenance. Historically, grazing by native herbivores and prairie fires were the agents principally responsible for maintaining grassland areas. However, elimination of native herbivores, wide-spread fire suppression, and conversion for agriculture have greatly altered grasslands in the United States and Canada...
Authors
P.D. Vickery, J.R. Herkert, F.L. Knopf, J. Ruth, C.E. Keller