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Now showing items 41-49 of 49
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, ...
Life with and without sex :
(1980)
Nepotistic behavior was never observed among parthenogenetic whiptails for several possible reasons. First, it appears that members of parthenogenetic whiptail populations are not genetically identical due to independent ...
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. ...