Geoscience Reference
In-Depth Information
Peterson, R. O. 1995.
The wolves of Isle Royale: A broken balance.
Minoqua, Wisc.: Willow
Creek Press.
Powell, R. A. 1979. Mustelid spacing patterns: Variations on a theme by
Mustela
.
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für Tierpsychologie
50: 153-165.
Powell, R. A. 1987. Black bear home range overlap in North Carolina and the concept of
home range applied to black bears.
International Conference on Bear Research and Man-
agement
7: 235-242.
Powell, R. A. 1989. Effects of resource productivity, patchiness and predictability on mat-
ing and dispersal strategies. In V. Standen and R. A. Foley, eds.,
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ogy of mammals and humans,
101-123. Oxford, U.K.: Blackwell Scientific.
Powell, R. A. 1993a. Why do some forest carnivores exhibit intrasexual territoriality and
what are the consequences for management?
Proceedings of the International Union of
Game Biologists
21: 268-273.
Powell, R. A. 1993b (2d ed).
The fisher: Ecology, behavior and life history
. Minneapolis: Uni-
versity of Minnesota Press.
Powell, R. A. 1994. Structure and spacing of
Martes
populations. In S. W. Buskirk et al.,
eds.,
Martens, sables and fishers: Biology and conservation,
101-121. Syracuse, N.Y.: Cor-
nell University Press.
Powell, R. A. and J. J. Fried. 1992. Helping by juvenile pine voles (
Microtus pinetorum
),
growth and survival of younger siblings, and the evolution of pine vole sociality.
Behav-
ioral Ecology
4: 325-333.
Powell, R. A. and M. S. Mitchell. 1998. Topographical constraints on home range quality.
Ecography
21: 337-341.
Powell, R. A., J. W. Zimmerman, and D. E. Seaman. 1997.
Ecology and behaviour of North
American black bears: Home ranges, habitat and social organization
. London: Chapman
& Hall.
Powers, D. R. and T. McKee. 1994. The effect of food availability on time and energy
expenditure of territorial and non-territorial hummingbirds.
Condor
96: 1064-1075.
Price, K., S. Boutin, and R. Ydenberg. 1990. Intensity of territorial defense in red squirrels:
An experimental test of the asymmetric war of attrition.
Behavioral Ecology and Sociobi-
ology
27: 217-222.
Pulliainen, E. 1984. Use of the home range by pine martens (
Martes martes
L
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logica Fennica
171: 271-274.
Pyke, G. H. 1984. Optimal foraging theory: A critical review.
Annual Review of Ecology and
Systematics
15: 523-575.
Pyke, G. H., H. R. Pulliam, and E. L. Charnov. 1977. Optimal foraging: A selective review
of theory and tests.
Quarterly Review of Biology
52: 137-154.
Reid, M. L. and P. J. Weatherhead. 1988. Topographic constraints on competition for ter-
ritories.
Oikos
51: 115-117 plus
erratum Oikos
53: 143.
Reynolds, R. D. and J. W. Laundrè. 1990. Time intervals for estimating pronghorn and
coyote home ranges and daily movements.
Journal of Wildlife Management
54: 316-
322.
