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首页> 外文期刊>Conservation Biology >Multiyear monitoring of survival following mitigation-driven translocation of a long-lived threatened reptile
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Multiyear monitoring of survival following mitigation-driven translocation of a long-lived threatened reptile

机译：缓解驱动的生存的多年度监测，长寿威胁爬行动物的易位

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Translocation is used by managers to mitigate the negative impacts of development on species. Moving individuals to a new location is challenging, and many translocation attempts have failed. Robust, posttranslocation monitoring is therefore important for evaluating effects of translocation on target species. We evaluated the efficacy of a translocation designed to mitigate the effects of a utility-scale solar energy project on the U.S. federally listed Mojave desert tortoise (Gopherus agassizii). The species is a long-lived reptile threatened by a variety of factors, including habitat loss due to renewable energy development in the Mojave Desert and portions of the Colorado Desert in southern California (southwestern United States). We translocated 58 individual tortoises away from the project's construction site and intensively monitored them over 5 years (2012-2017). We monitored these individuals and tortoises located in the translocation release area (resident tortoises; n = 112) and control tortoises (n = 149) in a nearby location. We used our tortoise encounter data and known-fate survival models to estimate annual and cumulative survival. Translocated tortoises in each of 2 size classes (120-160 mm, >160 mm) did not survive at lower rates than resident and control tortoises over the study period. For models with different sets of biotic and abiotic covariates, annual and cumulative estimates of survival were always >0.87 and >0.56, respectively. Larger tortoises tended to have higher survival, but translocated tortoises were not differentially affected by the covariates used to model variation in survival. Based on these findings, our translocation design and study protocols could inform other translocation projects for desert species. Our case study highlights the benefits of combining rigorous scientific monitoring with well-designed, mitigation-driven management actions to reduce the negative effects of development on species of conservation concern.
机译：管理者使用易位来减轻物种开发的负面影响。将个人移动到新的位置是挑战性的，并且许多易位尝试失败了。因此，后转位监测对于评估易位对目标物种的影响是重要的。我们评估了易位旨在减轻公用事业级太阳能项目对美国联邦上市的莫哈韦沙漠龟（Gophusus Agassizii）的影响的效果。这些物种是一种长期爬行动物，受到各种因素的威胁，包括由于莫哈韦沙漠和南加州南部（美国西南部）的科罗拉多沙漠部分的可再生能源发展而导致的栖息地丧失。我们将58个单独的陆龟从项目的施工现场移开，并在5年（2012-2017）超过5年中密集他们。我们监控了位于易位释放区域（居民龟; N = 112）的这些个人和龟，并在附近的位置控制龟（n = 149）。我们利用乌龟遇到数据和已知的生存模型来估算年度和累积的生存。 2个尺寸类中的每一个（120-160 mm，> 160 mm）中的易位龟在研究期间没有比居民和控制陆龟在较低的速率下存活。对于具有不同生物和非生物协变量集的模型，分别为生存的年度和累积估计值分别> 0.87和> 0.56。较大的乌龟往往具有更高的生存率，但是易位的龟在含有用于模拟生存中的变异的协变量的差异影响。根据这些调查结果，我们的易位设计和研究协议可以通知其他易位项目的沙漠物种。我们的案例研究凸显了与精心设计的缓解驱动的管理行动相结合严格的科学监测，以减少发展对保护问题的负面影响。

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