Declining invasive grey squirrel populations may persist in refugia as native predator recovery reverses squirrel species replacement
Declining invasive grey squirrel populations may persist in refugia as native predator recovery reverses squirrel species replacement
复制标题
由于本地捕食者的恢复逆转了松鼠物种的替代，栖息地中的入侵灰松鼠种群数量可能会持续下降
DOI：
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发表时间：
2020
影响因子：
5.7
通讯作者：
D. Tosh
中科院分区：
文献类型：
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作者：
Joshua P. Twining;W. Montgomery;D. Tosh
1.入侵物种是全球生物多样性面临的最严重威胁之一。对本地和非本地物种相互作用的调查集中在单个物种的影响上，尽管它们嵌入了多个物种与其环境之间直接和间接相互作用的网络中。2.我们开发了1公里2的分辨率，单物种和多物种的占用模型，使用定量相机陷阱收集的数据在332个站点的公民科学家在区域调查，包括14,130平方公里的北方爱尔兰。3.最近的研究表明，英国和爱尔兰的本地红松鼠和入侵的灰松鼠通过资源和疾病介导的竞争以及共同的敌人欧洲松貂联系在一起。我们表明，松貂的存在逆转红松鼠替代灰松鼠在区域的基础上，与红松鼠占用积极影响暴露于松貂。相比之下，灰松鼠对松貂的存在有强烈的负面反应。对松貂和这两种松鼠的栖息地适宜性进行建模表明，尽管松貂种群的恢复在控制灰松鼠分布方面具有潜在的强大作用，但后者可能会在城市中持续存在。
1. Invasive species pose one of the most serious global threats to biodiversity. Investigations into the interactions of native and non-native species focus on the impacts of single species, despite being embedded in a network of direct and indirect interactions between multiple species and their environments. 2. We developed 1-km 2 resolution, single-species and multi-species occupancy models using quantitative camera trap data collected by citizen scientists at 332 sites in a regional survey comprising the 14,130 km 2 of Northern Ireland. 3. Recent research suggests that native red and invasive grey squirrels in Britain and Ireland are linked by resource and disease-mediated competition, and by a shared enemy, the European pine marten. We demonstrate that the presence of the pine marten reverses red squirrel replacement by grey squirrels on a regional basis, with red squirrel occupancy positively affected by exposure to pine marten. In contrast, the grey squirrel has a strongly negative response to the presence of pine marten. Modelling habitat suitability of pine marten and both squirrel species suggests that, despite the potentially strong effect of a recovering population of pine martens in controlling grey squirrel distribution, the latter is likely to persist in urban