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Page 3051, results 76251 - 76275

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Publication Extents

Not all publications have extents, not all extents are completely accurate
The effects of semen collection on fertility in captive, naturally fertile, sandhill cranes
G. Chen, G.F. Gee, Jane M. Nicolich, J.A. Taylor
2001, Book chapter, Proceedings of the eighth North American crane workshop
We tested to see if semen collection interferes with fertility in naturally fertile pairs of cranes. We used 12 naturally fertile, Florida sandhill crane (Grus canadensis pratensis) pairs for this study, 6 control and 6 experimental. All pairs had previously produced fertile eggs. Semen was collected on...
Tracking sandhill crane migration from Saskatchewan to the Gulf Coast
D.G. Hjertaas, D. H. Ellis, B.W. Johns, S.L. Moon
2001, Book chapter, Proceedings of the Eighth North American Crane Workshop
Four adult sandhill cranes (Grus canadensis rowani) were captured in east-central Saskatchewan, equipped with transmitters, and tracked by satellite to determine if their migration routes and wintering areas would allow their use as guide birds to establish a new migratory flock of whooping cranes (G. americana). Two birds captured...
Preface
D. H. Ellis
2001, Book chapter, Proceedings of the Eighth North American Crane Workshop
Fate of the survivors of the 1995 and 1996 Arizona trucking migrations of costume-reared greater sandhill cranes
D.P. Mummert, D. H. Ellis, C. L. Chambers
2001, Book chapter, Proceedings of the Eighth North American Crane Workshop
In 1995 and 1996, we trained 2 groups of costume-reared greater sandhill cranes (Grus canadensis tabida) (10 in 1995, 14 in 1996) to follow a truck. Thereafter we led 10 in 1995 and 12 in 1996 from Garland Prairie, northern Arizona, to the Buenos Aires National Wildlife Refuge, southern...
Forward
J.M. Weeks, S. O’Hare, Barnett A. Rattner
Philip S. Rainbow, Steve P. Hopkin, Mark Crane, editor(s)
2001, Book chapter, Forecasting the Environmental Fate of Effects of Chemicals
Modeling avian detection probabilities as a function of habitat using double-observer point count data
P.J. Heglund, J.D. Nichols, J.E. Hines, J. Sauer, J. Fallon, F. Fallon
Rebecca Field, Robert J. Warren, Henryk Okarma, Paul R. Sievert, editor(s)
2001, Book chapter, Wildlife, Land, and People: Priorities for the 21st Century
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...
Regional patterns in proportion of bird species detected in the North American Breeding Bird Survey
J.R. Sauer, J.D. Nichols, J.E. Hines, T. Boulinier, C.H. Flather, W. L. Kendall
Rebecca Field, Robert J. Warren, Henryk Okarma, Paul R. Sievert, editor(s)
2001, Book chapter, Wildlife, Land, and People: Priorities for the 21st Century
Counts from the North American Breeding Bird Survey (BBS) underestimate species richness. We use capture-recapture methods to estimate species richness from BBS count data collected in 1996 and show that detection probabilities demonstrate clear regional patterns. Capture-recapture methods should be used to estimate species richness from count data,...
The use of forward looking infrared to locate bird carcasses in agricultural areas
J.M. Healy
2001, Book
Helicopter-mounted Forward Looking Infrared has mainly been used for large animal censuses. I examined the use of this instrument in locating bird carcasses in agricultural fields to improve current carcass searching techniques. Mallard (Arias platyrhynchos) and northern bobwhite quail (Colinus virginianus) carcasses were measured with an infrared thermometer...
Dispersal
J. Clobert, E. Danchin, A.A. Dhondt, J.D. Nichols, editor(s)
2001, Book
The ability of species to migrate and disperse is a trait that has interested ecologists for many years. Now that so many species and ecosystems face major environmental threats from habitat fragmentation and global climate change, the ability of species to adapt to these changes by dispersing, migrating, or...
Yukon River King Salmon - Ichthyophonus Pilot Study
R. M. Kocan, P.K. Hershberger
2001, Report
When king salmon enter the Yukon River on their spawning migration in mid June, over 25% of the population are infected with Ichthyophonus. The percent of infected fish remains relatively constant until the fish pass river mile 1,319 at Dawson, Y.T., then it drops to 13% when they reach river...
Ciencia, Sociedad, Soluciones: Una Introduccion al USGS
Water Resources Division, U.S. Geological Survey
2001, Fact Sheet 010-01
El USGS sirve a la nacion de los Estados Unidos proveyendo informacion fidedigna para ? Describir y comprender la Tierra; ? Minimizar la perdida de vidas y propiedades por desastres naturales; ? Manejar los recursos hidrologicos, biologicos, energeticos y minerales; y ? Mejorar y proteger nuestra calidad de vida....
Data Model and Relational Database Design for Highway Runoff Water-Quality Metadata
Gregory E. Granato, Steven Tessler
2001, Open-File Report 2000-480
A National highway and urban runoff waterquality metadatabase was developed by the U.S. Geological Survey in cooperation with the Federal Highway Administration as part of the National Highway Runoff Water-Quality Data and Methodology Synthesis (NDAMS). The database was designed to catalog available literature and to document results of the synthesis...