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Page 3945, results 98601 - 98625

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Wolf and bear predation on white-tailed deer fawns in northeastern Minnesota
K. E. Kunkel, L.D. Mech
1994, Canadian Journal of Zoology (72) 1557-1565
Whitetailed deer (Odocoileus virginianus) fawn mortality was studied during the summers of 1989 and 1990 in northeastern Minnesota. Estimated pooled mortality rates for 21 radio-tagged fawns were 0.44 for the May-June, 0.13 for the July-October, and 0.51 for the May-October intervals. Predation accounted for all mortalities, with...
Reproductive success of barn swallows nesting near a selenium-contaminated lake in east Texas, USA
Kirk A. King, T. W. Custer, D.A. Weaver
1994, Environmental Pollution (84) 53-58
Reproductive success and contaminant levels in 1986 and 1987 were compared between Barn Swallows nesting at selenium-contaminated Martin Lake, Texas, USA, and swallows nesting at a reference site. Nests were initiated about the same time or earlier at Martin Lake than at the reference site and clutch size was similar...
Survival and causes of mortality in juvenile Puerto Rican parrots
G.D. Lindsey, W.J. Arendt, Jan Kalina
1994, Journal of Field Ornithology (65) 76-82
Fifteen juvenile Puerto Rican Parrots (Amazona vittata) from wild nests in 1985, 1986 and 1987 were radio monitored an average of 110 +- 15.9 (SE) d (range 4-209 d) post-fledgling. Minimum survival was 67% (n = 3) in 1985, 100% (n = 4) in 1986 and 43% (n = 7)...
Contaminants in eggs of aquatic birds from the grasslands of central California
R. L. Hothem, D. Welsh
1994, Archives of Environmental Contamination and Toxicology (27) 180-185
Eggs were collected from the Grasslands of western Merced County, California, during 1986 and 1987, and at the Mendota Wildlife Area in Fresno County in 1987, as part of a reproductive study of nesting ducks and shorebirds. The eggs were analyzed to evaluate the effects of contaminants in agricultural drainwater...
Density estimation using the trapping web design: A geometric analysis
W.A. Link, R. J. Barker
1994, Biometrics (50) 733-745
Population densities for small mammal and arthropod populations can be estimated using capture frequencies for a web of traps. A conceptually simple geometric analysis that avoid the need to estimate a point on a density function is proposed. This analysis incorporates data from the outermost rings of traps,...
Prevalence of eustrongylidosis in wading birds from colonies in California, Texas, and Rhode Island, USA
J. C. Franson, T. W. Custer
1994, Colonial Waterbirds (17) 168-172
Snowy Egret (Egretta thula) and Black-crowned Night-Heron (Nycticorax nycticorax) nestlings from colonies in Texas, Rhode Island, and California and Great Egret (Casmerodius albus) nestlings from Texas were examined for eustrongylidosis, or infection by the parasitic nematode Eustrongylides spp. In 31% (24/77) of all broods examined, at least one nestling was...
Lyme disease and conservation
H. Ginsberg
1994, Conservation Biology (8) 343-353
Lyme disease is a tick-borne illness that is widespread in North America, especially in the northeastern and northcentral United States. This disease could negatively influence efforts to conserve natural populations in two ways: (1) the disease could directly affect wild animal health; and (2) tick control efforts could adversely affect...
Habitat use by an endangered riverine fish and implications for species protection
C.S. Robbins
1994, Ecology of Freshwater Fish (3) 177-178
We investigated habitat specificity of the amber darter (Percina antesella Williams & Etnier 1977), an imperiled fish from restricted portions of 2 rivers in the southeastern United States. Foraging amber darters occupied a narrow range of riffle habitat, consistently avoiding areas < 20 cm deep and with velocity <...