An evaluation of a mitigation strategy for deer-vehicle collisions
An evaluation of a mitigation strategy for deer-vehicle collisions
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鹿车碰撞缓解策略的评估
DOI：
10.2981/11-122
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Silvia A. S. Rosa
中科院分区：
文献类型：
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作者：
J. Bissonette;Silvia A. S. Rosa
犹他州西南部的高黑尾鹿Odocoileus hemionus死亡率导致建立了具有两个主要目标的缓解策略：1）减少野生动物-车辆碰撞和2）恢复景观连通性，以促进野生动物在道路景观中的运动。在我们的研究中，我们评估了缓解措施在以下方面降低黑尾鹿死亡率的有效性：1）我们比较了新围栏区与无围栏对照区的鹿-车辆碰撞次数; 2）我们分析了“围栏末端”问题，这里定义为2.4米高的隔离围栏末端黑尾鹿死亡率增加; 3）我们使用遥感相机评估了新地下通道的动物穿越频率，并将其与20年的对照地下通道的穿越频率进行了比较。我们比较了6年的施工前死亡率（1998-2003年）与2年的施工后死亡率数据（2005-2006年），发现治疗组（即围栏，跳跃和地下通道）的鹿死亡率下降了98.5%，而对照组（即无围栏，无跳跃和无地下通道）的鹿死亡率下降了2.9%。我们没有发现与鹿死亡率有关的围栏末端问题。秋季和春季的迁移活动清楚地反映在地下通道的使用上。总体结果表明，缓解策略是有效的，减少了鹿车事故的数量，同时允许野生动物在景观中移动。
High mule deer Odocoileus hemionus mortality in southwestern Utah led to the establishment of a mitigation strategy with two major objectives: 1) reduction of wildlife-vehicle collisions and 2) restoration of landscape connectivity to facilitate wildlife movement across the roaded landscape. During our study, we assessed the effectiveness of the mitigation measures in reducing mule deer mortality in the following ways: 1) we compared the number of deer-vehicle collisions in the newly fenced area with a control area without fencing; 2) we analyzed the ‘end-of-the-fence’ problem, defined here as increased mortality of mule deer at the ends of the 2.4-m high exclusion fences; and 3) we evaluated the frequency of animal crossings of the new underpasses using remotely-sensed cameras and compared them with crossing frequency rates for a 20-year-old control underpass. We compared six years of pre-construction mortality (during 1998-2003) with two years of post-construction data on mortality (during 2005-2006) and found a 98.5% decline in deer mortalities in the treatment (i.e. fenced, jump-outs and underpasses) vs a 2.9% decline in the control (i.e. no fences, no jump-outs and no underpasses). We detected no end-of-the-fence problems related to deer mortality. Migratory movements during fall and spring were clearly reflected in the use of underpass. Overall results demonstrated that the mitigation strategy was effective and reduced the number of deer-vehicle accidents, while allowing wildlife movement across the landscape.