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Now showing items 11-18 of 18
Landscape heterogeneity and the role of corridors in determining the spatial structure of insular mammal populations.
(1998)
Characterizing the influence of landscape features on assessments of isolation is critical to understanding dispersal, and, ultimately, the structure of native communities in fragmented ecosystems. At the same time, a ...
Movement by three stream dwelling cyprinids (Notropis boops, Campostoma anomalum, and Cyprinella venusta).
(1999)
The effects of riffles as barriers to movement of stream fish were investigated in large, outdoor artificial streams. Rates of movement of three species of minnows (Cyprinidae) (Campostoma anomalum, Cyprinella venusta and ...
The ontogeny of diet in the Mexican spiny-tailed iguana, Ctenosaura pectinata: Physiological mechanisms and ecological consequences.
(1999)
The foraging ecology and digestive physiology of a natural size-structured population of iguanid lizards (Ctenosaura pectinata) was studied through two wet and two dry seasons in a tropical deciduous thorn forest in central ...
Interactions between fishes and zooplankton, with emphasis on an exotic cladoceran, Daphnia lumholtzi, in Lake Texoma, Oklahoma-Texas.
(1997)
Menidia beryllina do utilize the invading cladoceran, Daphnia lumholtzi, as an additional food source. The increase in D. lumholtzi abundance during the middle of the summer, a period when native zooplankton are scarce, ...
Landscape structure in a managed forest mosaic of the Southern Appalachian Mountains and its influence on songbirds and small mammals.
(1998)
Forests in the Appalachian Mountains have been severely affected by logging in the past and little old-growth is left. The remaining forests form a heterogeneous mosaic of different forest successions. A concern for ...
Sibling rivalry for milk in northern grasshopper mice (Onychomys leucogaster).
(1999)
This research explores non-aggressive sibling rivalry over milk in a small mammal, the northern grasshopper mouse (Onychomys leucogaster). Food shortages result in sibling rivalry. Pups from the largest litters grew at ...
Ecostystem effects of omnivorous fishes in Lake Texoma (Oklahoma-Texas).
(1999)
I examined the potential effects of benthic omnivorous fishes in reservoir ecosystems. In the first chapter, I examined long-term changes in the total fish assemblage of Lake Texoma based on gill net sampling in 1954, ...
A multiscale analysis of factors influencing the distributions of birds in the southern Great Plains.
(1998)
I studied the influence of local- and landscape-level habitat factors on breeding-bird communities in a prairie landscape in southwestern Oklahoma, U.S.A. Local habitat characteristics were sampled at study plot transects. ...