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Page 1753, results 43801 - 43825

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Environmental influences on major waterfowl diseases
M. Friend
1992, Conference Paper, Transactions of the 57th North American Wildlife and Natural Resources Conference
The decline of North American waterfowl resources since the 1960s is well-known to this audience and need not be detailed to establish that population numbers for several key waterfowl species are at or near their lowest levels since records have been kept. Loss of habitat is an accepted major cause...
Polychlorinated biphenyl residues and egg mortality in double-crested cormorants from the Great Lakes
D. E. Tillitt, G.T. Ankley, J. P. Giesy, J.P. Ludwig, H. Kurita-Matsuba, D. V. Weseloh, P.S. Ross, C.A. Bishop, L. Sileo, K. L. Stromborg, J. Larson, T.J. Kubiak
1992, Environmental Toxicology and Chemistry (11) 1281-1288
We evaluated the overall potency of polychlorinated biphenyl (PCB)-containing extracts from double-crested cormorant (Phalacrocorax auritis) eggs with an in vitro bioassay system, the H4IIE rat hepatoma cell bioassay. Results from the H4IIE bioassay were strongly correlated with the hatching success of eggs in the colonies, whereas conventional methods of PCB...
Implications for faunal habitat related to altered macrophyte structure in regulated lakes in northern Minnesota
Douglas A. Wilcox, James E. Meeker
1992, Wetlands (12) 192-203
Water-level regulation has altered the plant species composition and thus the structure of nearshore aquatic macrophyte communities in two regulated lakes in northern Minnesota as compared with a nearby unregulated lake. Results of previous faunal studies in the regulated lakes were used as a basis for assessing the effects of...
Effect of the lampricide 3-trifluoromethyl-4-nitrophenol on the pink heelsplitter
T.D. Bills, J.J. Rach, L. L. Marking, G.E. Howe
1992, Resource Publication 183
The lampricide 3-trifluoromethyl-4-nitrophenol (TFM) is used to selectively kill sea lampreys (Petromyzon marinus ) in the tributaries of the Great Lakes. Over the years, TFM was tested most often on nontarget fishes and only occasionally on invertebrates, including freshwater mussels. We exposed pink heelsplitters (Potamilus alatus )...
Flooding mortality and habitat renewal for least terns and piping plovers
John G. Sidle, D.E. Carlson, E.M. Kirsch, J.J. Dinan
1992, Colonial Waterbirds (15) 132-136
We observed extensive mortality (eggs and chicks) of the endangered interior population of the Least Tern (Sterna antillarum) and threatened Piping Plover (Charadrius melodus) caused by natural flooding during the 1990 breeding season along the Platte River, Nebraska USA. Aerial videography of the Platte River before and after the flood...
Influence of age and selected environmental factors on reproductive performance of canvasbacks
Jerome R. Serie, David L. Trauger, Jane E. Austin
1992, Journal of Wildlife Management (56) 546-556
Age, productivity, and other factors affecting breeding performance of canvasbacks (Aythya valisineria) are poorly understood. Consequently, we tested whether reproductive performance of female canvasbacks varied with age and selected environmental factors in southwestern Manitoba from 1974 to 1980. Neither clutch size, nest parasitism, nest success, nor the number of ducklings/brood...
Status of coregonine fishes in the Laurentian Great Lakes
Guy W. Fleischer
1992, Polskie Archiwum Hydrobiologii (39) 247-259
The post-glacial coregonine assemblage in the Great Lakes included several species of the genera Prosopium and Coregonus. Overfishing, habitat degradation, and competition with various exotic fish species severely reduced coregonine abundance and altered their distribution by the mid to latter part of the 20th century. Most of the...
Application of a computer simulation model to migrating white-fronted geese in the Klamath Basin
R.B. Frederick, William R. Clark, John Y. Takekawa
Dale R. McCullough, R.H. Barrett, editor(s)
1992, Book chapter, Wildlife 2001: Populations
The Pacific greater white-fronted goose (Anser albifrons) population has declined precipitously over the past 20 years. Loss of wetland habitat in California wintering areas has had a significant effect on the population, so recovery of the population may depend on innovative management of the few remaining wetlands. A computer simulation...
Population dynamics of breeding waterfowl
Douglas H. Johnson, J.D. Nichols, M.D. Schwartz
D.J. Batt, A. D. Afton, M.G. Anderson, C.D. Ankney, Douglas H. Johnson, J.A. Kadlec, Gary L. Krapu, editor(s)
1992, Book chapter, Ecology and management of breeding waterfowl
No abstract available....
Foraging ecology and nutrition
Gary L. Krapu, K. J. Reinecke
D.J. Batt, A. D. Afton, M.G. Anderson, C.D. Ankney, Douglas H. Johnson, J.A. Kadlec, Gary L. Krapu, editor(s)
1992, Book chapter, Ecology and management of breeding waterfowl
No abstract available....
Water quality changes and their relation to fishery resources in the upper Mississippi River
L. E. Holland Bartels
C.D. Becker, D.A. Neitzel, editor(s)
1992, Book chapter, Water quality in North American river systems
Despite a long history of human manipulation, the most dramatic changes in the upper Mississippi River occurred in the 1930s with construction of a lock and dam system to facilitate the commercial transport of commodities. In 1988, barge traffic through the system ranged from 7,500 tows per year at Lock...
Lower Cretaceous smarl turbidites of the Argo Abyssal Plain, Indian Ocean
Julie A. Dumoulin
Sondra K. Stewart, Diana Kennett, Elsa K. Mazzullo, editor(s)
1992, Proceedings of the Ocean Drilling Program: Scientific Results 123-5
Sediments recovered during Ocean Drilling Program (ODP) Leg 123 from the Argo Abyssal Plain (AAP) consist largely of turbidites derived from the adjacent Australian continental margin. The oldest abundant turbidites are Valanginian-Aptian in age and have a mixed (smarl) composition; they contain subequal amounts of calcareous and siliceous biogenic components,...
Sedimentary history of the Tethyan margins of eastern Gondwana during the Mesozoic
James G. Ogg, Felix Gradstein, Julie A. Dumoulin, Massimo Sarti, Paul Brown
1992, Book chapter, Geophysical Monograph Series, Volume 70: Synthesis of results from scientific drilling in the Indian Ocean
A composite Mesozoic geological history for the Gondwana margins to the Eastern Tethys Ocean can be assembled from stratigraphic successions on the Australian and Himalayan margins and from drill sites of Ocean Drilling Program Legs 122 and 123. During the Triassic, this region drifted northwards, entering tropical paleolatitudes during the...
Maintenance of the zebra mussel (Dreissena polymorpha) under laboratory conditions
S. Jerrine Nichols
Thomas F. Nalepa, Donald W. Schloesser, editor(s)
1992, Book chapter, Zebra mussels: Biology, impacts, and control
Zebra mussels (Dreissena polymorpha) with a shell length >1 mm are adaptable to laboratory conditions if ammonia levels are low (<1 mg/L) and water temperatures range between 4 and 24 degrees C. The most difficult aspect of maintaining mussels is providing acceptable food that will support growth and survival...
Review of habitat classification schemes appropriate to streams, rivers, and connecting channels in the Great Lakes drainage system
Patrick L. Hudson, R.W. Griffiths, T.J. Wheaton
W.-Dieter N. Busch, Peter G. Sly, editor(s)
1992, Book chapter, The development of an aquatic habitat classification system for lakes
Studies of lotic classification, zonation, and distribution carried out since the turn of the century were reviewed for their use in developing a habitat classification scheme for flowing water in the Great Lakes drainage basin. Seventy papers, dealing mainly with fish but including benthos, were organized into four somewhat...
The use of freshwater and saltwater animals to distinguish between the toxic effects of salinity and contaminants in irrigation drain water
Christopher G. Ingersoll, F.J. Dwyer, S.A. Burch, M.K. Nelson, D.R. Buckler, J. B. Hunn
1992, Environmental Toxicology and Chemistry (11) 503-511
Irrigation drain waters entering Stillwater Wildlife Management Area (SWMA) in south-western Nevada contain elevated levels of salinity and several inorganic contaminants (As, B, Cu, Li, Mo, and Sr). Mortalities of fish and waterfowl at the management area are believed to be associated with the poor water quality of the drains....
Breeding population inventories and measures of recruitment
L.M. Cowardin, R.J. Blohm
D.J. Batt, A. D. Afton, M.G. Anderson, C.D. Ankney, Douglas H. Johnson, J.A. Kadlec, Gary L. Krapu, editor(s)
1992, Book chapter, Ecology and Management of Breeding Waterfowl
In this chapter we review the techniques used to measure two important parameters of waterfowl populations, size of breeding population and recruitment. If waterfowl are to be managed toward goals defined in terms of population sizes such as those in the recently signed North American Waterfowl Management Plan (U.S. Fish...
Notes on sedimentation activities calendar year 1991
U.S. Interagency Advisory Committee on Water Data- Subcommittee on Sedimentation
1992, Report
This report is a digest of information furnished by Federal agencies conducting sedimentation investigations. The decision to publish the report was made in 1946, from a proposal by the Chairman of the Federal Interagency River Basin Committee, Subcommittee on Sedimentation. The subcommittee approved the proposal and agreed to issue this...