Department
Biology
Degree Name
Master of Science (MS)
Abstract
In this investigation, I compiled distribution and habitat records for Chaetodipus hispidus, Dipodomys ordii, Perognathus fasciatus, Perognathus flavescens, and Perognathus flavus on the central Great Plains. I more fully described habitat use of these species in this region, and I investigated local patterns of sympatry regarding body size and habitat complexity. I used these data to better explain local and regional distribution patterns among the five rodents. I concluded that these five species coexist regionally because each associated with similar but unique habitat types, soil textures, and climatic schemes within the region. Although primary utilization was distinctive, each species was adaptable with regard to these environmental conditions. Thus, each demonstrated a degree of overlap in a secondary group of these parameters, which seemed to promote local coexistence. However, competition apparently restricted these associations, for locally sympatric species differed in body size more often than expected by chance. Competition was minimized and diversity maximized, however, at a few localities having at least three coexisting species because of macrohabitat and microhabitat mosaics or abundant food resources. Furthermore, evidence suggested that range limits of P. fasciatus, P. flavescens, and P. flavus were affected by interspecifc competition in eastern Colorado and western Nebraska. Results also indicated that competition between C. hispidus and Zapus hudsonius may prevent the former species form dispersing east of the Missouri River lowlands.
Keywords
Biology
Advisor
Jerry R. Choate
Date of Award
Spring 1998
Document Type
Thesis - campus only access
Recommended Citation
DeBaca, Robert S., "Biogeography of Heteromyids on the Central Great Plains" (1998). Master's Theses. 2680.
DOI: 10.58809/IYDL1282
Available at:
https://scholars.fhsu.edu/theses/2680
Rights
© The Author(s)
Comments
For questions contact ScholarsRepository@fhsu.edu