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pro vyhledávání: '"David G. Peitz"'
Spacing of point counts for grassland bird surveys in small geographical areas: Biases and tradeoffs
Autor:
Lloyd W. Morrison, David G. Peitz
Publikováno v:
The Wilson Journal of Ornithology. 132
Point counts are the most commonly employed methodology in bird surveys. Survey points are usually spaced ≥250 m apart to prevent double counting. In cases where they are used in small (
Autor:
Lloyd W. Morrison, David G. Peitz
Publikováno v:
Western North American Naturalist. 71:49-55
Black-tailed prairie dogs, Cynomys ludovicianus, now inhabit a small fraction of their original range in the Great Plains. We monitored a population of black-tailed prairie dogs at Scotts Bluff National Monument, Nebraska, from colonization in 1981 u
Publikováno v:
Journal of Mammalogy. 76:1164-1177
Previous studies have indicated that populations of eastern cottontails ( Sylvilagus floridanus ) respond favorably to habitat disturbance. Protein quality of vegetation has been implicated as one of the most important reasons for such demographic ch
Autor:
David G. Peitz, Robert L. Lochmiller
Publikováno v:
Journal of Mammalogy. 74:777-781
We investigated the feasibility of using essential-amino-acid analyses of stomach digesta from cotton rats ( Sigmodon hispidus ) to assess the nutritional quality of proteins in their diet. Post-prandial changes (0-3 h) in the essential-amino-acid co