Canvasback Aythya valisineria
G.M. Haramis
Steven L. Funderburk, Stephen J. Jordan, Joseph A. Mihursky, David Riley, editor(s)
1991, Book chapter, Habitat Requirements for Chesapeake Bay Living Resources
Managing suburban forest fragments for birds
C.S. Robbins
Daniel J. Decker, Marianne E. Krasny, Gary R. Goff, Charles R. Smith, David W. Gross, editor(s)
1991, Book chapter, Challenges in the Conservation of Biological Resources: A Practitioner's Guide
Responses of North American duck populations to exploitation
J.D. Nichols
C.M. Perrins, J.-D. Lebreton, G.J.M. Hirons, editor(s)
1991, Book chapter, Bird Population Studies: Relevance to Conservation and Management
Response of sago pondweed, a submerged aquatic macrophyte, to herbicides in three laboratory culture systems
W. James Fleming, M.S. Ailstock, J.J. Momot, C.M. Norman
Joseph W. Gorsuch, William R. Lower, Wun-cheng Wang, M.A. Lewis, editor(s)
1991, Book chapter, Plants for Toxicity Assessment: Second Volume
The phytotoxicity of atrazine, paraquat, glyphosate, and alachlor to sago pondweed (Potamogeton pectinatus), a submerged aquatic macrophyte, was tested under three types of laboratory culture conditions. In each case, tests were conducted in static systems, the test period was four weeks, and herbicide exposure was chronic, resulting from a single...
Contaminants in drainage water and avian risk thresholds
J. P. Skorupa, H. M. Ohlendorf
A. Dinar, D. Zilberman, editor(s)
1991, Book chapter, The Economics and Management of Water and Drainage in Agriculture
Browse diversity and physiological status of white-tailed deer during winter
G. D. DelGiudice, L.D. Mech, U.S. Seal
Jon E. Rodiek, Eric G. Bolen, editor(s)
1991, Book chapter, Wildlife and Habitats in Managed Landscapes
Demography of eastern population tundra swans, Cygnus columbianus columbianus
J. Bart, R. Limpert, S. Earnst, W. Sladen, J.E. Hines, T. Rothe
Jane Sears, Philip J. Bacon, editor(s)
1991, Book chapter, Third IWRB International Swan Symposium: Oxford, England, 9-13 December 1989
Overview of the neotropical migratory bird problem
C.S. Robbins
1991, Book chapter, The Neotropical Migratory Bird Conservation Program, Second Annual Meeting, October 21-23
Wood Duck Aix sponsa
G.M. Haramis
Steven L. Funderburk, Stephen J. Jordan, Joseph A. Mihursky, David Riley, editor(s)
1991, Book chapter, Habitat Requirements for Chesapeake Bay Living Resources
American black duck Anas rubripes
D.G. Krementz
Steven L. Funderburk, Stephen J. Jordan, Joseph A. Mihursky, David Riley, editor(s)
1991, Book chapter, Habitat Requirements for Chesapeake Bay Living Resources
Breeding Bird Survey and bird banding data: Applications to raptor research and management
J.R. Sauer, Sam Droege, D. Bystrak
1991, Book chapter, Proceedings of the Midwest Raptor Management Symposium and Workshop
The Breeding Bird Survey (BBS) and Bird Banding Laboratory (BBL) are sources of information for raptor biologists. The BBS has been conducted each year since 1966 in the United States and Canada; historical bird banding records extend back to the early 20th century. BBS data can be used to...
Area-occupied survey technique for nesting woodland raptors
G.C. Iverson, M.R. Fuller
1991, Book chapter, Proceedings of the Midwest Raptor Management Symposium and Workshop
Feeding habitat use by wading birds: some management issues
R.M. Erwin
1991, Book chapter, Proceedings of the Coastal Nongame Workshop: 10-12 September, 1991, Gainesville, Florida
Contaminants in the coastal environment
P.H. Albers
1991, Book chapter, Proceedings of the Coastal Nongame Workshop: 10-12 September, 1991, Gainesville, Florida
Use of Andean condors to enhance success of California condor reintroduction to the wild
M.P. Wallace, J. Wiley
1991, Book chapter, Acta Congressus Internationalis Ornithologici 22: Christchurch, New Zealand, 2-9 December 1990, volume IV
Colonial Waterbird Information Service
L. A. Hanners, L. K. Kinkel, R. B. Clapp
1991, Book
No abstract available....
The Way of the Wolf
L.D. Mech
1991, Book
Oil spills and living organisms
P.H. Albers
1991, Report
Dolphin swimming: A review
Frank E. Fish, Clifford A. Hui
1991, Mammal Review (21) 181-195
Research into dolphin swimming has historically been guided by false assumptions of ‘effortless’, ‘high-speed’ swimming. These assumptions have instigated the development of drag-reduction hypotheses but tests of these hypotheses have generally had little success. The autecological approach has dominated recent efforts and has been more successful. In this review we...
Earth Science Information Center
Water Resources Division, U.S. Geological Survey
1991, Report
An ESIC? An Earth Science Information Center. Don't spell it. Say it. ESIC. It rhymes with seasick. You can find information in an information center, of course, and you'll find earth science information in an ESIC. That means information about the land that is the Earth, the land that is...
FOLD, federally owned Landsat data January 1991
Water Resources Division, U.S. Geological Survey
1991, Report
The FOLD data base lists all Landsat scenes held by participating agencies. Duplicate scene listings are maintained when more than one agency holds identical scenes; this permits the user to select the most convenient site to obtain a copy. Copies of the listing are distributed by EDC to contributing agencies...
Part D: Geochemistry of Soil Samples from 50 Solution-Collapse Features on the Coconino Plateau, Northern Arizona
Bradley S. Van Gosen, Karen J. Wenrich
1991, Open-File Report 91-594-D
Soil sampling surveys were conducted during 1984-1986 across 50 solution-collapse features exposed on the Coconino Plateau of northern Arizona in order to determine whether soil geochemistry can be used to distinguish mineralized breccia pipes from unmineralized collapse features. The 50 sampled features represent the variety of collapse features that crop...
Part C: Geochemistry of Soil Samples from 50 Solution-Collapse Features on the Coconino Plateau, Northern Arizona
Bradley S. Van Gosen, Karen J. Wenrich
1991, Open-File Report 91-594-C
Soil sampling surveys were conducted during 1984-1986 across 50 solution-collapse features exposed on the Coconino Plateau of northern Arizona in order to determine whether soil geochemistry can be used to distinguish mineralized breccia pipes from unmineralized collapse features. The 50 sampled features represent the variety of collapse features that crop...
Infrared spectroscopic examination of the interaction of urea with the naturally occurring zeolite clinoptilolite
D.M. Byler, W.V. Gerasimowicz, V.M. Stockette, D. D. Eberl
1991, Microchemical Journal (44) 130-139
Infrared spectroscopy has shown for the first time that the naturally occurring zeolite clinoptilolite can absorb urea, (NH2)2CO, under ambient conditions from either aqueous or ethanolic solutions. The two strongest NH stretching bands at 3441 and 3344 cm−1 in pure, solid urea shift to higher frequency (about 3504 and 3401 cm−1)...
Sedimentary facies and depositional environments of early Mesozoic Newark Supergroup basins, eastern North America
J. P. Smoot
1991, Palaeogeography, Palaeoclimatology, Palaeoecology (84) 369-423
The early Mesozoic Newark Supergroup consists of continental sedimentary rocks and basalt flows that occupy a NE-trending belt of elongate basins exposed in eastern North America. The basins were filled over a period of 30–40 m.y. spanning the Late Triassic to Early Jurassic, prior to the opening of the north...
