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183944 results.

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Page 4659, results 116451 - 116475

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Graptemys barbouri
R.A. Sanderson, J.E. Lovich
1988, Book chapter, Catalogue of American Amphibians and Reptiles
No abstract available at this time...
Chaparral
Jon E. Keeley, S.C. Keeley
M.G. Barbour, W.D. Billings, editor(s)
1988, North American terrestrial vegetation. 165-207
No abstract available at this time...
Caterpillars
J. A. Howell
1988, Book chapter, Children's Encyclopedia.
No abstract available at this time...
Polar Bear
S.D. Amstrup, DeMaster
J.W. Lentfer, editor(s)
1988, Report, Selected marine mammals of Alaska: Species accounts with research and management recommendations, U. S. Marine Mammal Commission, Washington, D. C
Polar bears are long-lived, late-maturing carnivores that have relatively low rates of reproduction and natural mortality. Their populations are susceptible to disturbance from human activities, such as the exploration and development of mineral resources or hunting. Polar bear populations have been an important renewable resource available to coastal communities throughout...
Fixed-wing airplane versus helicopter surveys of manatees (Trichechus manatus)
Galen B. Rathbun
1988, Marine Mammal Science (4) 71-75
The abundance of manatees, as with most marine mammals, is difficult to determine because they are visible for only short periods of time while at the surface of the water (Eberhardt et al. 1979, Powell et al. 1981). Aerial surveys are generally considered to be the most accurate method of...
Some considerations in modeling the mallard life cycle
Douglas H. Johnson, J.D. Nichols, M.J. Conroy, L.M. Cowardin
M.W. Weller, editor(s)
1988, Book chapter, Waterfowl in winter
We outline a population model proposed to accommodate the full life cycle of the mallard (Anas platyrhynchos). Events during the breeding season are better understood than events at other times of the year, but recent findings suggest the importance of phenomena away from the breeding grounds. Several processes are discussed...
Immunology in warmwater fish culture
D. P. Anderson
I. Abdurakhanovich, O.N. Bauer, editor(s)
1988, Book chapter, Diseases and Parasites in Warmwater Fish Culture
No abstract available at this time...
Rana onca
M.R. Jennings
1988, Book chapter, Catalogue of American Amphibians and Reptiles
No abstract available at this time...