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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.
Filter Total Items: 6158
Stressor interactions in ecological systems Stressor interactions in ecological systems
No abstract available.
Authors
William Clements, Samuel N. Luoma, Jeroen Gerritsen, A. Hatch, P. Jepson, Trefor B. Reynoldson, R. Thom
Integrated surface and borehole strong-motion, soil-response arrays in San Francisco, California Integrated surface and borehole strong-motion, soil-response arrays in San Francisco, California
An integrated set of four borehole arrays and ten surface installations is installed in the city of San Francisco, California to measure the response of soft-soil deposits to strong earthquake ground motions. The borehole arrays extend through thick layers of softwater-saturated soils of Holocene age and older more consolidated soils of Pleistocene age into bedrock at depths up to 100 m...
Authors
Roger D. Borcherdt, H. P. Liu, R.E. Westerlund, Christopher M. Dietel, J. F. Gibbs, R. E. Warrick
Separating stressor influences from environmental variability: Eight case studies from aquatic and terrestrial ecosystems Separating stressor influences from environmental variability: Eight case studies from aquatic and terrestrial ecosystems
No abstract available.
Authors
S.N. Suoma, W.H. Clements, T. DeWitt, Jeroen Gerritsen, A. Hatch, P. Jepson, Trefor B. Reynoldson, Ron Thom
Biogeochemical cycles Biogeochemical cycles
No abstract available.
Authors
H.L. Ehrlich, Ron Oremland, J.P. Zehr
`Akohekohe response to flower availability: seasonal abundance, foraging, breeding, and molt `Akohekohe response to flower availability: seasonal abundance, foraging, breeding, and molt
We studied the relationship of flower availability to the seasonality of life history events of the `Akohekohe (Palmeria dolei), a primarily nectarivorous and endangered Hawaiian honeycreeper from montane rain forests on Maui, Hawai`i. For comparison, we also investigated temporal bird density and foraging behavior of three other competing Hawaiian honeycreepers: `Apapane (Himatione...
Authors
Kim E. Berlin, John C. Simon, T.K. Pratt, James R. Kowalsky, Jeff S. Hatfield
A comparison of behavior for two cohorts of captive-reared greater sandhill cranes released in northern Arizona A comparison of behavior for two cohorts of captive-reared greater sandhill cranes released in northern Arizona
To determine how the behavior of greater sandhill cranes (Grus canadensis tabida) changes according to time of year, time of day, and number of days after release, we observed the activities of 2 groups of captive-reared greater sandhill cranes at Mormon Lake, northern Arizona. The behaviors we compared were alert, loafing, sleeping, foraging, preening, locomotion, and other. We found...
Authors
D.P. Mummert, C. L. Chambers, D. H. Ellis
A comparison of multi-disciplinary methods for measuring physical conditions of streams A comparison of multi-disciplinary methods for measuring physical conditions of streams
No abstract available.
Authors
Faith A. Fitzpatrick
A reintroduction experiment involving mated pairs of parent-reared greater sandhill cranes in northern Arizona A reintroduction experiment involving mated pairs of parent-reared greater sandhill cranes in northern Arizona
In April 1997, 4 mated pairs of adult greater sandhill cranes (Grus canadensis tabida) were abrupt-released at Mormon Lake, Arizona. Five of 8 adult cranes died within 10 days of release. One crane flew from the release area within 10 days after release and was never relocated. One pair of cranes, with 1 pair member sustaining a broken wing 4 days after release, survived for 4 months and
Authors
D.P. Mummert, D. H. Ellis, C. L. Chambers
Access to bird population data Access to bird population data
Access to bird population data is critical for effective conservation planning and implementation. Although a tremendous volume of baseline data exists, it is often diffusely distributed and inaccessible to the resource manager and decision maker. A mechanism that facilitates assembly, documentation and delivery of avian data in a user-friendly manner is needed in order to integrate bird...
Authors
E. Martin, B.G. Peterjohn, M.D. Koneff
Are the endocrine and immune systems really the same thing? Are the endocrine and immune systems really the same thing?
Abstract not available
Authors
C.B. Schreck, A.G. Maule
Bacterial diseases Bacterial diseases
No abstract available.
Authors
S.K. Taylor, D. E. Green, K.M. Wright, B.R. Whitaker