Habitat and landscape characteristics that influence population density and behavior of gray squirrels in urban area

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Habitat and landscape characteristics that influence population density and behavior of gray squirrels in urban area

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dc.contributor.advisor Nilon, Charles H., 1956- en
dc.contributor.author Parker, Tommy S. en_US
dc.date.accessioned 2010-01-12T17:06:52Z
dc.date.available 2010-01-12T17:06:52Z
dc.date.issued 2006 en_US
dc.date.submitted 2006 Fall en
dc.identifier.other ParkerT-092806-D6044 en_US
dc.identifier.uri http://hdl.handle.net/10355/4420
dc.description The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. en_US
dc.description Title from title screen of research.pdf file (viewed on August 7, 2007) en_US
dc.description Vita. en_US
dc.description Includes bibliographical references. en_US
dc.description Thesis (Ph. D.) University of Missouri-Columbia 2006. en_US
dc.description Dissertations, Academic -- University of Missouri--Columbia -- Fisheries and wildlife. en_US
dc.description.abstract Recent trends in ecological studies have displayed increases in the studying of urban systems and wildlife. Investigations on various urbanized taxa have often described similar behavioral (reduced fear of humans, altered activity patterns, and increased intraspecific aggression) and population dynamics (higher densities and reduced dispersal) modifications. In addition to the presence of these changes in urbanized wildlife, little is known regarding the habitat and landscape features associated with these changes. The objective of my study was to identify habitat and landscape characteristics correlated with behavioral and life history adaptations of urban wildlife. In the summer and fall of 2003 and 2004, I sampled gray squirrels (Sciurus carolinensis) at six urban parks for density, wariness, intraspecific aggression, and activity patterns. I then used combinations of each parks ecological characteristics (size, canopy cover, tree basal area, and number of trees) and the characteristics of the adjacent landscapes (tree cover, number of trees, building cover, and number of buildings) to develop models to predict gray squirrel wariness (fear of humans), intraspecific aggression, activity patterns, and density. Akaike's Information Criterion (AIC) was used to evaluate candidate models and determine the best approximating models. Density and canopy cover were the most efficient predictors for wariness (AIC = 48.42, Wi = 0.500); density, patch tree basal area,and matrix tree cover for aggression (AIC = 39.54, Wi = 0.567); patch size, canopy cover, and number of matrix trees for density (AIC = 57.40, Wi = 0.237), and density for activity (AIC = 34.02, Wi = 0.253). en_US
dc.language.iso en_US en_US
dc.publisher University of Missouri--Columbia en_US
dc.subject.lcsh Urban animals en_US
dc.subject.lcsh Gray squirrel -- Habitat en_US
dc.subject.lcsh Gray squirrel -- Behavior en_US
dc.title Habitat and landscape characteristics that influence population density and behavior of gray squirrels in urban area en_US
dc.type Thesis en_US
thesis.degree.discipline Fisheries and wildlife sciences en_US
thesis.degree.grantor University of Missouri--Columbia en_US
thesis.degree.name Ph. D. en_US
thesis.degree.level Doctoral en_US
dc.identifier.merlin .b59276861 en_US
dc.identifier.oclc 163164462 en_US
dc.relation.ispartofcommunity University of Missouri-Columbia. Graduate School. Theses and Dissertations. Dissertations. 2006 Dissertations
dc.relation.ispartofcollection 2006 Freely available dissertations (MU)


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