|材料类型：||文献, 硕士论文/博士论文, 互联网资源|
Robin A Aiken
|注意：||Title from PDF title page (viewed on May 8, 2006).|
|描述：||xi, 108 pages : illustrations, color maps, digital, PDF file|
|详述：||System requirements: Adobe Acrobat reader.; Mode of access: World Wide Web.|
|责任：||Robin A. Aiken.|
The Rocker b Ranch on the southern rolling plains has one of the last sizeable populations of pronghorn (Antilocapra americana) in Texas. To investigate habitat utilization on the ranch, pronghorn were fitted with GPS/VHF collars and were released into pastures surrounded by a variety of fences to determine how fence types affected habitat selection. Habitat parameters chosen for analysis were vegetation, elevation, slope, aspect, and distances to water, roads, and oil wells. Results showed that pronghorn on the ranch crossed modified fencing significantly less than other types of fencing. Pronghorn selected for all habitat parameters to various degrees, with the most important being vegetation type. Habitat selection could be attributed to correspondence of vegetation type with other parameters or spatial arrangements of physical features of the landscape. Seasonal differences in habitat utilization were evident, and animals tended to move shorter distances at night than they did during daylight hours.