One hundred seventy transplants of 112 black bears (Ursus americanus) in Glacier National Park during 1967-77 were evaluated to identify factors that contributed to transplant success. Distance, number of ridges, elevation gain, and physiographic barriers between the trapping and release sites were highly correlated with the success of transplants. Differences in the importance of distance and elevation gain between males and females and between inexperienced and experienced bears were identified. Adult transients may make up a substantial portion of the nuisance bear population. J. WILDL. MANAGE. 45(1):102-110 Glacier National Park, Montana, is inhabited by approximately 500 black bears (unpubl. rep., Glacier Natl. Park, 1978). Habitat use patterns of bears often reflect the distribution of available food, and the search for food is the ultimate reason behind many of their movements. Bears may travel through human-use areas simply as a result of their proclivity to wander and their high level of curiosity (Jonkel and Cowan 1971, Beeman and Pelton 1976, Bacon 1980), or they may be attracted into human-use areas by food made available by people (Barnes and Bray 1967, Sauer et al. 1969, Pelton 1972, Piekielek and Burton 1975, Beeman and Pelton 1976, Lindzey et al. 1976, Harms 1980). In an effort to obtain food, some bears learn to damage property or to threaten or injure people. If a destructive behavior pattern is reinforced by a food reward, the bear is likely to repeat it (Stokes 1970:1156, Scott 1972:103-105). The increase in Glacier's annual visitation from 67,200 in 1945 to 1,660,000 in 1977 increased the potential for conflicts between black bears and people. Bear management implemented to resolve these conflicts involved both preventive and responsive measures. Preventive management included a program of visitor education and a concerted, sustained effort to make visitors' food unavailable to bears. Despite this effort, however, some unnatural food sources continued to exist, as when bearproof garbage cans were overfilled, when sightseers offered food to bears grazing at the roadside, or when campers failed to store their food securely or dispose of garbage properly. Responsive management involved transplanting or killing bears that exhibited nuisance behavior. Transplants of black bears in other regions of the United States have had various degrees of success. Erickson and Petrides (1964:60) stated that troublesome bears can be transplanted without great likelihood of their return. In contrast, Barnes and Bray (1967:116), Harger (1967), Sauer et al. (1969), Payne (1975), Piekielek and Burton (1975), Beeman and Pelton (1976:90), and Alt et al. (1977) observed that bears have a definite tendency to return to the capture site, and that the likelihood that a bear would return was related to the distance it was transplanted. Although Beeman and Pelton (1976:92) stated that rough topography and dense vegetation may have hindered long movements of bears in the Great Smoky Mountains, no study has quantitatively considered topographic features in relation to transplant success. The purpose of my study was to evaluate the relationships of quantitative charac102 J. Wildl. Manage. 45(1):1981 This content downloaded from 207.46.13.127 on Wed, 12 Oct 2016 04:32:34 UTC All use subject to http://about.jstor.org/terms BLACK BEAR TRANSPLANTS McArthur 103 teristics of transplants and of transplanted bears to the effectiveness of transplanting as a procedure in black bear management. I am grateful to C. Martinka for valuable advice and encouragement, and to E. Garton, D. Graber, M. Meagher, C. Meslow, and J. Peek for their thoughtful and constructive reviews of the manu-
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