Theses and Dissertations
Issuing Body
Mississippi State University
Advisor
Wang, Guiming
Committee Member
Taylor, Jimmy D.
Committee Member
Dibble, Eric D.
Committee Member
Strickland, Bronson K.
Date of Degree
12-9-2016
Document Type
Graduate Thesis - Open Access
Major
Wildlife, Fisheries and Aquaculture
Degree Name
Master of Science
College
College of Forest Resources
Department
Department of Wildlife, Fisheries and Aquaculture
Abstract
The Hutchinsonian niche is the n dimensional hyper volume that allows for the persistence of a species. Castor canadensis, a large semi-aquatic rodent, is an ecosystem engineer and often a keystone species for many ecosystems. I examined the effect of multiple spatial scales on hierarchical habitat selection byC. canadensis using presence-only modeling techniques. I also determined individual trophic niche specialization in C. canadensis utilizing stable isotope analysis. I concluded that C. canadensis displayed scale independent habitat selection when comparing landscape and fine spatial scales. Individual trophic niche specialization occurred in colonies of the same resource availability. Also, individual trophic niches varied substantially between wetlands. These results have implications for the management of “generalist” species because populations can be composed of specialized individuals. Studies of niche across spatial and organizational scales are required for successful conservation and management strategies.
URI
https://hdl.handle.net/11668/18615
Recommended Citation
Francis, Robert Antonio, "Spatial and Trophic Niche Specialization in Castor Canadensis" (2016). Theses and Dissertations. 4007.
https://scholarsjunction.msstate.edu/td/4007
Comments
hierarchical habitat selection||indiviudal trophic niche variation||Castor canadensis