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: 6198
Modeling avian detection probabilities as a function of habitat using double-observer point count data Modeling avian detection probabilities as a function of habitat using double-observer point count data
Point counts are a controversial sampling method for bird populations because the counts are not censuses, and the proportion of birds missed during counting generally is not estimated. We applied a double-observer approach to estimate detection rates of birds from point counts in Maryland, USA, and test whether detection rates differed between point counts conducted in field habitats as...
Authors
P.J. Heglund, J.D. Nichols, J.E. Hines, J. Sauer, J. Fallon, F. Fallon
Models for the adaptive harvest management of Rocky Mountain sandhill cranes: problems and potential Models for the adaptive harvest management of Rocky Mountain sandhill cranes: problems and potential
The migratory Rocky Mountain Population (RMP) of the greater sandhill crane (Grus canadensis tabida) breeds primarily in river valleys, marshes, and meadows of western Montana and Wyoming, southeastern Idaho, northern Utah, and northwestern Colorado. The RMP winters primarily in the Middle Rio Grande Valley of New Mexico, with smaller concentrations in the southwestern parts of that...
Authors
W. L. Kendall, Rod C. Drewien
National digital elevation program (NDEP) National digital elevation program (NDEP)
No abstract available.
Authors
K. Osborn, J. List, D.B. Gesch, J. Crowe, G. Merrill, E. Constance, J. Mauck, C. Lund, V. Caruso, J. Kosovich
Natural fertility in whooping cranes and Mississippi sandhill cranes at Patuxent Wildlife Research Center Natural fertility in whooping cranes and Mississippi sandhill cranes at Patuxent Wildlife Research Center
The first fertile whooping crane (Grus americana; WC) egg produced through natural breeding at Patuxent Wildlife Research Center (Patuxent) was laid in 1991. Prior to that time, all fertile whooping crane eggs were the result of artificial insemination. Since 1991, eight different whooping crane pairs at Patuxent have produced fertile eggs through natural breeding. Mean fertility...
Authors
Jane M. Nicolich, G.F. Gee, D. H. Ellis, Scott G. Hereford
Online bibliographic sources in hydrology Online bibliographic sources in hydrology
No abstract available.
Overview of land cover and geomorphic indicators of biotic integrity in the Etowah River basin, GA Overview of land cover and geomorphic indicators of biotic integrity in the Etowah River basin, GA
No abstract available.
Authors
D.S. Leigh, Mary C. Freeman, B. J. Freeman, E.A. Kramer, C. M. Pringle, A.D. Rosemond, M.J. Paul, D.M. Walters, A. Roy, C.P. Lo
Pesticides Are Involved With Population Declines of Amphibians in the California Sierra Nevadas Pesticides Are Involved With Population Declines of Amphibians in the California Sierra Nevadas
No abstract available at this time
Authors
Donald W. Sparling, Gary M. Fellers, Laura L. McConnell
Prefacio de la editora de la serie sobre la traduccion Prefacio de la editora de la serie sobre la traduccion
No abstract available.
Authors
M.S. Foster
Promoting wildness in sandhill cranes conditioned to follow an ultralight aircraft Promoting wildness in sandhill cranes conditioned to follow an ultralight aircraft
During the 1998 field season, we developed and tested a new protocol to teach sandhill cranes (Grus canadensis) to follow ultralight aircraft yet avoid humans. Although successful in teaching the cranes a migration route, our previous migration (1997) resulted in birds that were overly tame and sought association with humans. For this study, 16 sandhill cranes were costume-reared at USGS
Authors
Joseph W. Duff, William A. Lishman, D. A. Clark, G.F. Gee, D.T. Sprague, D. H. Ellis
Recommendations for the attachment of satellite transmitters to cranes Recommendations for the attachment of satellite transmitters to cranes
Recent advances in miniaturization of satellite transmitters have resulted in thumb-sized packages weighing less than 30 g. These are smaller than VHF radios routinely mounted on crane leg bands. With this development and with favorable signal reception results, there is no need for, and much to recommend against the continued use of back-pack mounts. We provide details for leg-mount
Authors
D. H. Ellis, P.W. Howey, Gary L. Krapu