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首页> 外文期刊>Conservation Biology >Drivers of Seabird Population Recovery on New Zealand Islands after Predator Eradication
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Drivers of Seabird Population Recovery on New Zealand Islands after Predator Eradication

机译：消除捕食者后新西兰群岛海鸟种群恢复的驱动因素

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Eradication of introduced mammalian predators from islands has become increasingly common, with over 800 successful projects around the world. Historically, introduced predators extirpated or reduced the size ofmany seabird populations, changing the dynamics of entire island ecosystems. Although the primary outcome of many eradication projects is the restoration of affected seabird populations, natural population responses are rarely documented and mechanisms are poorly understood. We used a generic model of seabird colony growth to identify key predictor variables relevant to recovery or recolonization. We used generalized linear mixed models to test the importance of these variables in driving seabird population responses after predator eradication on islands around New Zealand. The most influential variable affecting recolonization of seabirds around New Zealand was the distance to a source population, with few cases of recolonization without a source population ≤25 km away. Colony growth was most affected by metapopulation status; there was little colony growth in species with a declining status. These characteristicsmay facilitate the prioritization of newly predator-free islands for activemanagement. Although we found some evidence documenting natural recovery, generally this topic was understudied. Our results suggest that in order to guide management strategies, more effort should be allocated to monitoring wildlife response after eradication.
机译：从岛屿上消灭引进的哺乳动物捕食者已变得越来越普遍，全世界有超过800个成功的项目。从历史上看，引进的捕食者使许多海鸟种群灭绝或减少了，从而改变了整个岛屿生态系统的动态。尽管许多根除项目的主要成果是恢复受影响的海鸟种群，但很少有关于自然种群反应的记录，对机制的了解也很少。我们使用海鸟菌落生长的通用模型来识别与恢复或重新定殖有关的关键预测变量。我们使用广义线性混合模型来测试这些变量在新西兰周围岛屿上的捕食者消灭后驱动海鸟种群反应的重要性。影响新西兰周围海鸟重新定殖的最有影响力的变量是与源种群的距离，很少有没有源种群≤25km的重新定殖案例。菌落的生长受种群分布状况的影响最大。地位下降的物种几乎没有菌落生长。这些特征可以促进对新的无捕食者的岛屿进行优先排序以进行积极管理。尽管我们发现了一些证据证明自然恢复，但总体而言，这一主题并未得到充分研究。我们的结果表明，为了指导管理策略，应在根除后对监测野生动植物的响应方面做出更多努力。

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