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Evolutionary and environmental effects on thermoregulation among complex lizard communities.
(2002)
A community of ten sympatric lizard species was studied in a mountain canyon in southern Arizona to determine the effect of phylogeny on habitat use and thermoregulation. Habitat use, body temperatures ( Tb) and operative ...
Distribution and occurrence of carnivores in the Oklahoma panhandle.
(2000)
Five carnivore species representing three families were detected sufficiently to permit analysis. Carnivores were, in general, not distributed evenly over regional, landscape and local scales in the panhandle environment. ...
Ecological context and the evolution of mating biases in a freshwater amphipod species complex.
(2007)
Mating traits are among the most extravagant traits found in nature. As with any trait, understanding the diversification of mating traits requires information on both direct and indirect selection acting on the traits and ...
Sexual selection in a livebearing fish with a coercive mating system (western mosquitofish, Gambusia affinis).
(2006)
The livebearing fishes of the genus Gambusia are quickly becoming a model system to test alternative mechanisms of sexual selection in the form of coercive mating. I investigated effects of male and female body size, and ...
An integrative approach to understanding mussel community structure: Linking biodiversity, environmental context and physiology.
(2007)
The focus of my third chapter is an integration of the physiology information collected in chapter two to address how species dominance of two distinct thermal guilds (thermally-tolerant and thermally-sensitive) influences ...
Correlates of extra-pair paternity and the effects of ectoparasites on nestling growth, parental provisioning and reproductive success in the house sparrow.
(2000)
In addition, I looked at another aspect of the reproductive biology of the House Sparrow, the effects of ectoparasites on nestling growth, parental provisioning and reproductive success. To determine whether Pellonyssus ...
Endocrine mediation of alternative mating tactics in toads: A proximate perspective on ecological patterns and sexual selection.
(2005)
Male Great Plains toads (Bufo cognatus) and Woodhouse's toads (Bufo woodhousii) alternate between one of two mating tactics; they may either vocalize to attract mates or they may adopt a non-calling "satellite" tactic. ...
Predicting breeding-bird occurrences in Oklahoma: Relationship of species distributions to land-cover and climatic variation.
(2007)
Predictive modeling for species distributions has received considerable attention in the past decade. As more data sets and better satellite images become available it is of interest to know how well modeling techniques ...
Trophic spatial ecology of invertivorous stream fishes.
(2007)
In Chapter 1, I studied the relationship between Bigeye Shiner populations and variables of habitat patches within the stream, and the land adjacent to the stream (the riparian zone). This work was done in Brier Creek, a ...
The effects of woody patches of habitat on grassland small mammals.
(2002)
To understand better the influence of habitat modifications on grassland ecosystems, I examined the effects of woody patches on the species richness, species diversity, and total density of grassland small mammals; the ...