Research interests:
My research focuses on the impact of resource and land
use on vulnerable wildlife populations. Using empirical
and quantitative tools, I study vulnerable wildlife
populations that live in both terrestrial and aquatic
environments facing pressing conservation issues. This
includes wildlife populations from a wide range of taxa
and geographical regions; common hippopotamus in sub-Saharan
Africa, mountain lion in California, sea turtles in
the Gulf of Mexico, and albatross in the North Pacific
Ocean. Recent publications:
Lewison R. 1998. Infanticide in the hippopotamus:
evidence for polygynous ungulates. Ethology, Ecology
and Evolution, 10: 277-286.
Lewison, R., E.L Fitzhugh, and S. Galentine. 2001.
Validation of a rigorous track classification technique:
Identifying individual mountain lions. Biological
Conservation, 99:313-321.
Lewison, R. L., L.B. Crowder, and D.J. Shaver. 2003.
The impact of Turtle Excluder Devices and fisheries
closures on loggerhead and Kemp’s ridley strandings
in the western Gulf of Mexico. Conservation Biology,
17:1089-1097.
Lewison, R. L and L.B. Crowder. 2003. Estimating fishery
bycatch and effects on a vulnerable seabird population.
Ecological Applications, 13: 743-753.
Lewison, R. L and C. Jacoby. 2004. Exploring foraging
behavior of an unusual megaherbivore: A spatially
explicit model of the hippopotamus. Ecological
Modelling, 171: 127-138.
Lewison, R. L., L. B. Crowder and S. Freeman. 2004.
Quantifying the effects of fisheries on threatened
species: the impact of pelagic longlines on loggerhead
and leatherback sea turtles. Ecology Letters,
7: 221-231.
Lewison, R. L., L. B. Crowder , A. Read, and S. Freeman.
2004. Understanding impacts of fisheries bycatch on
marine megafauna. Trends in Ecology and Evolution,
19 (11): 598-604.
Lewison, R.L., D. Nel, F. Taylor, J. Croxall and K.
Rivera. 200- Taking a large-scale approach to seabird
bycatch. Marine Ornithology (in press).
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