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Use of Highway Underpasses by Large Mammals in Virginia and Factors Influencing Their Effectiveness.
| 题名： | Use of Highway Underpasses by Large Mammals in Virginia and Factors Influencing Their Effectiveness. |
| 作者： | DONALDSON, B. M. |
| 关键词： | BEAR; DEER; HIGHWAYS; MAMMALS; WILDLIFE |
| 摘要： | The rapid increase in animal-vehicle collisions on U.S. roadways is a growing concern in terms of human safety, property damage and injury costs, and viability of wildlife populations. Wildlife crossing structures are gaining national recognition by transportation agencies as effective measures to reduce animal-vehicle collisions and connect wildlife habitats across transportation corridors. In Virginia, white-tailed deer and black bear pose the highest risk. This 1-year study was conducted to monitor various underpass structures in Virginia to determine the structural and location attributes that make a crossing successful in terms of use by large mammals. The underpasses, most of which were not specifically designed as wildlife crossings, consist of box culverts and bridges of varying sizes. Remote cameras installed at seven underpass sites in Virginia have recorded more than 2,700 wildlife photographs and documented 1,107 white-tailed deer crossings in the most heavily used structures. |
| 报告类型： | 科技报告 |
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