Theses and Dissertations at Montana State University (MSU)
Permanent URI for this collectionhttps://scholarworks.montana.edu/handle/1/733
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Item Responses of elk to a 500 kV transmission line on the North Boulder winter range, Montana(Montana State University - Bozeman, College of Letters & Science, 1986) Nelson, Gerald PatrickItem Human wildlife interactions in the Gallatin Range, Yellowstone National Park, 1973-1974(Montana State University - Bozeman, College of Letters & Science, 1976) Chester, James MichaelItem Activity patterns and time budgets of grizzly bears in the Swan Mountains of Montana(Montana State University - Bozeman, College of Letters & Science, 1998) Wenum, Erik AlexanderItem Reestablishment of swift fox in north central Montana(Montana State University - Bozeman, College of Letters & Science, 1998) Zimmerman, Amy L.Item Impacts of recreational shooting on prairie dog colonies(Montana State University - Bozeman, College of Letters & Science, 1996) Vosburgh, Timothy CharlesThe BLM has encouraged recreational shooting as a means of controlling prairie dog populations and as a recreational use of public lands. I investigated the impacts of recreational shooting on prairie dog population dynamics, activity patterns, and vegetation conditions in prairie dog towns. I monitored shooting pressure on BLM hunted colonies, measured the strength of association between shooting effort and changes in population size/structure and activity patterns, and compared vegetation between hunted and unhunted colonies. Marked subsamples were used to estimate prairie dog densities during the spring and fall on 10 hunted colonies in 1994 and 9 hunted and 8 non-hunted (control) colonies in 1995. Mean number of prairie dogs killed on colonies open to hunting was 27% in 1994 and 53 in 1995. In 1995, prairie dog density declined 33% on hunted colonies and 15% on non-hunted colonies. The percentage of marked prairie dogs recaptured during the fall was higher on non-hunted colonies (53%) than on hunted colonies (41%). I also found a positive correlation between shooting pressure and change in density on hunted colonies. Although age structure did not change from spring to fall, recreational shooting may have resulted in higher female mortality during 1995. Prairie dogs spent more time in alert postures and less time foraging on hunted than on unhunted towns. Prairie dogs could also be approached more closely on non-hunted colonies than on hunted colonies. Of the 4 approaches I used to monitor prairie dogs: (mark-recapture, burrow counts, vegetation analysis, and counting prairie dogs), above ground counts were the best approach for assessing prairie dog populations.Item Population status, social habits, movements and habitat relationships of the summer resident elk of Jackson Hole Valley, Wyoming(Montana State University - Bozeman, College of Letters & Science, 1965) Martinka, Clifford J.Item Activity patterns of grizzly bears in the Yellowstone ecosystem and their reproductive behavior, predation and the use of carrion(Montana State University - Bozeman, College of Letters & Science, 1983) Schleyer, Bart OtisItem Ferruginous hawk and prairie falcon reproductive and behavioral responses to human activity near the Kevin Rim, Montana(Montana State University - Bozeman, College of Letters & Science, 1993) Van Horn, Russell CarlItem Distribution, movements and habitat use of mule deer associated with the Bracket Creek winter range, Bridger Mountains, Montana(Montana State University - Bozeman, College of Letters & Science, 1980) Nyberg, Harvey EvanItem Distribution, movements, and habitat use during spring, summer, and fall by mule deer associated with the Armstrong winter range, Bridger Mountains, Montana(Montana State University - Bozeman, College of Letters & Science, 1976) Pac, David F.