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首页> 外文期刊>Oryx >Occupancy estimation of jaguar Panthera onca to assess the value of east-central Mexico as a jaguar corridor
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Occupancy estimation of jaguar Panthera onca to assess the value of east-central Mexico as a jaguar corridor

机译：美洲虎Panthera onca的占用率评估，以评估墨西哥中东部作为美洲虎走廊的价值

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The use of wildlife corridors to maintain landscape connectivity has become increasingly relevant to the conservation of wide-ranging species, including the jaguar Panthera onca. Jaguars are particularly threatened in Mexico, where corridor linkages are tenuous as a result of habitat fragmentation. Our study assessed a section of potential corridor south of the Sierra Madre Oriental in eastern Mexico. We conducted 245 interviews with local inhabitants in 140 36-km~2 sampling units over a 5-month period and compiled detection histories for jaguars and five prey species: collared peccary Pecari tajacu, red brocket deer Mazama americana, white-tailed deer Odocoileus virginia-nus, spotted paca Agouti paca, and nine-banded armadillo Dasypus novemcinctus. These detection histories were then analysed using site occupancy modelling. Each sampling unit was assigned a probability of habitat use based on (1) the two smaller prey species (paca and armadillo) and (2) at least two of the larger prey species (collared peccary and two deer species) using habitat in that unit. This probability estimate was considered a proxy for the prey base of each sampling unit and therefore the unit's suitability as a jaguar corridor. Although the prey base in some areas appears adequate to support a jaguar population, large-scale development projects and the paucity of jaguar sign are major obstacles to this region's potential as a jaguar corridor. Our results suggest that the eastern coast of Mexico may not be a priority area for range-wide jaguar conservation.
机译：利用野生动物走廊维持景观的连通性与保护美洲虎Panthera onca等广泛物种的关系越来越密切。美洲虎在墨西哥尤其受到威胁，在墨西哥，由于栖息地破碎，走廊之间的联系十分脆弱。我们的研究评估了墨西哥东部塞拉马德雷东方山脉以南的一段潜在走廊。我们在5个月的时间内对140个36 km〜2采样单元中的本地居民进行了245次采访，并收集了美洲虎和5种猎物的侦查历史：圈养的野猫Pecari tajacu，美洲红bro，白尾鹿Odocoileus弗吉尼亚-nus，点缀着的鼠尾草paca和九带的犰狳Dasypus novemcinctus。然后使用站点占用模型对这些检测历史进行分析。根据以下条件，为每个采样单位分配栖息地使用可能性：（1）使用该单位中的栖息地的两个较小的猎物物种（paca和犰狳）和（2）至少两个较大的猎物物种（衣领和两个鹿物种） 。该概率估计值被认为是每个采样单元的猎物基础的代理，因此可以认为该单元适合用作美洲虎走廊。尽管某些地区的猎物基地似乎足以支撑美洲虎的种群，但大规模的开发项目和美洲虎标志的匮乏是该地区作为美洲虎走廊潜力的主要障碍。我们的结果表明，墨西哥东部沿海地区可能不是美洲虎保护范围的重点地区。

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