Global ETD Search

281	Trophic interactions between walleye and smallmouth bass in a north temperate lake / Frey, Aaron Paul. January 2003 (has links) (PDF) Thesis (M.S.) in Natural Resources, Fisheries--University of Wisconsin--Stevens Point, 2003. / Includes bibliographical references (leaves 93-100).
282	Landscape heterogeneity and the role of corridors in determining the spatial structure of insular mammal populations / Perault, David R., January 1998 (has links) Thesis (Ph.D.)--University of Oklahoma, 1998. / Includes bibliographical references (leaves 131-139).
283	Growth and survival of juvenile sockeye salmon (Oncorhynchus nerka) in three Northwestern British Columbia lakes - an evaluation of an International Stock Enhancement Program Mathias, Karin L. January 2000 (has links) Thesis (M. Sc.)--York University, 2000. Graduate Programme in Biology. / Typescript. Includes bibliographical references (leaves 233-246). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://wwwlib.umi.com/cr/yorku/fullcit?pMQ59547.
284	Variability in the zooplankton of north-temperate lakes its estimation, spatial and temporal extent, synchrony, and the influence of environmental change / Rusak, James A. January 2000 (has links) Thesis (Ph. D.)--York University, 2000. / Typescript. Includes bibliographical references. Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://wwwlib.umi.com/cr/yorku/fullcit?pNQ56267.
285	Genetic and endocrine related variability of sea otters, Enhydra lutris / Larson, Shawn Elizabeth. January 2003 (has links) Thesis (Ph. D.)--University of Washington, 2003. / Vita. Includes bibliographical references (leaves 94-106).
286	Quantification of marine archaea in the Cape Fear River Estuary in southeastern North Carolina using fluorescence in situ hybridization / Arp, Jennifer Rebecca. January 2003 (has links) Thesis (M.S.)--University of North Carolina at Wilmington, 2003.
287	Macrophytes as fish habitat : the role of macrophyte morphology and bed complexity in fish species distributions / Carden, Kerilynn M. January 2002 (has links) (PDF) Thesis (M.S)--University of Wisconsin--Stevens Point, 2002. / Includes bibliographical references (leaves 102-110).
288	A statewide mail survey to estimate 2000-2001 angler catch, harvest and effort in Wisconsin / McClanahan, Dee R. January 2003 (has links) (PDF) Thesis (M.S.)--University of Wisconsin--Stevens Point, 2003. / Includes bibliographical references (leaves 39-44).
289	Individual-based population assessment for cetaceans : using photographs to infer abundance, demography and individual quality Fearnbach, Holly January 2012 (has links) No description available. 570
290	A discrete size-structured competition model. Crowe, Kathleen Marie. January 1991 (has links) Matrix difference equations have been used to model the discrete time dynamics of a variety of populations whose individual members have been categorized into a finite number of classes based on, for example, age, size, or stage. Examples of such models include Leslie's age-structured model and the Usher model, a size-classified model which has been applied to trees, corals, sea turtles, copepods, and fish. These matrix difference equations can incorporate virtually any type of nonlinearity arising from the density dependence of fertility and survival rates and transition probabilities between classes. Under a fairly general set of assumptions, it can be shown that the normalized class distribution vector equilibrates, and thus an asymptotic or limiting equation for total population size can be derived. In this research we assume the existence of a dynamically modeled resource in limited supply for which the members of the species compete, either exploitatively or through interference. The existence and stability of population size equlibria or cycles is then studied by means of bifurcation theory. Several biological considerations are addressed, including the Size-Efficiency Hypothesis of Brooks and Dodson, the effects of changes in individual physiological parameters on the size and competitive success of a species, and the effects of delays on the viability of a species. Dissertations, Academic Animal populations Ecology -- Mathematical models.

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