Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Jack W. Witham"'
Autor:
Susan P Elias, Jack W Witham, Elizabeth F Schneider, Peter W Rand, Malcolm L Hunter, Charles Lubelczyk, Robert P Smith
Publikováno v:
Journal of medical entomology. 59(2)
In the United States, surveillance has been key to tracking spatiotemporal emergence of blacklegged ticks [Ixodes scapularis Say (Ixodida:Ixodidae)] and their pathogens such as Borrelia burgdorferi Johnson, Schmid, Hyde, Steigerwalt & Brenner (Spiroc
Publikováno v:
Journal of Mammalogy. 98:419-427
Publikováno v:
Ecosphere. 7
Publikováno v:
Wildlife Society Bulletin. 36:313-327
We investigated the spatial response of 20 bird species to a group-selection timber harvest within a 40-ha forest stand over a 20-year period (5 yr preharvest and 15 yr postharvest). To characterize the spatial response of each species, we examined t
Autor:
Guiming M. Wang, Jack W. Witham, Stephen H. Vessey, Alban Guillaumet, Lowell L. Getz, Joseph F. Merritt, Malcolm L. Hunter, Norman A. Slade, N. Thompson Hobbs
Publikováno v:
Ecography. 36:439-446
Deterministic feedbacks within populations interact with extrinsic, stochastic processes to generate complex patterns of animal abundance over time and space. Animals inherently differ in their responses to fluctuating environments due to differences
Publikováno v:
Ecological Monographs. 80:287-302
Stochasticity is rarely explicitly investigated as a determinant of patterns of habitat use, even though evidence of its influence would undermine support for deterministic models of habitat selection. To assess the role of stochasticity in generatin
Autor:
Malcolm L. Hunter, Stephen H. Vessey, Jack W. Witham, Joseph F. Merritt, Jerry O. Wolff, Guiming Wang, Norman A. Slade, Susan P. Elias
Publikováno v:
Population Ecology. 51:133-142
Temporal variation in population size is regu- lated by both exogenous forces and density-dependent feedbacks. Furthermore, accumulating evidence indicates that temporal and spatial variation in climate and resources can modify the strength of densit
Publikováno v:
Journal of Mammalogy. 87:440-445
Vole population dynamics are well characterized in Europe, Fennoscandia, and Japan, but long-term studies of vole dynamics in North America are rare and much needed. Summer relative abundance of southern red-backed voles (Clethrionomys gapperi) fluct
Publikováno v:
Journal of Mammalogy. 85:743-747
Summer abundance of white-footed mice (Peromyscus leucopus) fluctuated periodically during 20 years (1983‐ 2002) at the Holt Research Forest, Maine, USA, a pine-oak forest within 125 km of the northern edge of this species’ range. The oscillation
Publikováno v:
Forest Ecology and Management. 176:543-561
In forests where large, stand-replacing disturbances are infrequent, small-scale disturbances associated with the mortality and replacement of individual trees are a primary source of heterogeneity in forest composition and structure. The disturbance