Grizzly Bear - Man Relationships in Yellowstone National Park
Grizzly Bear - Man Relationships in Yellowstone National Park
复制标题
黄石国家公园的灰熊与人类的关系
DOI:
10.2307/1295811
复制
发表时间:
1971
期刊:
影响因子:
10.1
通讯作者:
F. Craighead
中科院分区:
文献类型:
--
作者:
J. Craighead;F. Craighead
The grizzly bear, Ursus arctos horribilis, is an intelligent, extremely efficient omnivore and a relatively inefficient carnivore. This large bear feeds on grasses, sedges, tubers, berries, nuts, carrion, meat caches, rodents, big game, livestock, garbage, and even modem packaged foods. The propensity to seek and utilize a wide range of edibles has brought the grizzly into frequent contact with man. This ecological relationship of the omnivorous grizzly associating with omnivorous man and the predatory bear competing with the predatory human has led and will continue to lead to confrontations, property damage, and occasional conflict and injury. The grizzly has a long history of seeking and taking the food it wants with little opposition. The erratic, aggressive, and frequently unpredictable behavior of both grizzly and man increases the probability of conflict. The opportunity for confrontation and for injury to humans is small, but it is greater in national parks than elsewhere. To understand grizzly bear-man relationships in Yellowstone National Park, we must first recognize that the ecology of bear and man has always overlapped. Within recent geological time, wherever the species existed, the grizzly bear was at or near the top of the North American food pyramid. The North American Indian and the grizzly bear coexisted in a spacious environment. Two questions we wish to explore are can the grizzly bear and modern man co-exist in the congested environments of our large national parks? Specifically, can man and grizzly live together in Yellowstone? Secondly, if they can co-exist, how should man achieve this? Both questions require more than theoretical or philosophical answers, ethological extrapolation, administrative decrees, or generalized guidelines. We, our colleagues, and our graduate students sought to answer these questions 12 years ago when we began a long-term study of the grizzly bear within the 19,943 km2 (7700 miles2) National Park and adjacent national forests (Craighead et al., 1960). Since 1959, we have captured, examined, and released over 550 grizzlies, immobilized and individually color-marked 256 and logged over 40,000 man-hours observing and recording their activities and behavior. In addition, 24 individual grizzlies have been fitted with radios and radio-monitored for approximately 30,000 hours in order to obtain data on movements, home ranges, food habits, social and denning behavior, and an understanding of bear-man relationships (Craighead and Craighead, 1965, 1969, 1970).