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首页> 外文期刊>The Journal of Applied Ecology >Translocated native pine martens Martes martes alter short-term space use by invasive non-native grey squirrels Sciurus carolinensis
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Translocated native pine martens Martes martes alter short-term space use by invasive non-native grey squirrels Sciurus carolinensis

机译：进行本地松martens集市集市改变使用侵入性非短期空间灰松鼠Sciurus有害无益

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1. Predators can shape the distributions and dynamics of their prey through direct and indirect mechanisms. Where prey animals are regarded as pests, the augmentation of predator populations might offer a potential tool in their management. 2. Declines in invasive non-native grey squirrel Sciurus carolinensis populations in Ireland and Scotland have been related to an increase in range and density of native pine marten Martes martes populations. These reductions in grey squirrel abundance have, in turn, been linked to recovery of native red squirrels Sciurus vulgaris. 3. Taking the opportunity presented by a conservation translocation of pine martens from Scotland to Wales, we investigated the short-term effects of exposure to translocated martens on the space use and survival of resident grey squirrels. 4. Grey squirrel range size and daily distance travelled increased significantly with increasing exposure to martens but we found no effect of marten exposure on the recapture probability (i.e. apparent survival) of the sampled squirrels within the study time frame. This is suggestive of contemporary, non-lethal effects changing the ranging or foraging regimes of squirrels, due either to predator avoidance and/ or earlier lethal effects associated with a reduction in intraspecific competition. 5. Synthesis and applications. Our evaluation mimics the conditions experienced by grey squirrels at the front edge of naturally recovering pine marten populations and presents direct evidence that pine marten translocations could play an influential role in the behaviour and dynamics of invasive non-native grey squirrel populations. Translocations of native predators, undertaken primarily for biodiversity conservation, could therefore find additional application in managing the ecological and economic impacts of invasive non-native prey.
机译：1. 通过直接和动力学的猎物间接的机制。被认为是害虫,捕食者的增加他们的人口可能会提供一个潜在的工具管理。灰松鼠Sciurus有害无益的人群爱尔兰和苏格兰已经与一个有关范围和密度的增加本地松貂集市集市数量。减少灰松鼠丰富,与复苏的本地红色松鼠Sciurus寻常的。机会提供的保护易位的松树martens来自苏格兰威尔士,我们调查的短期影响暴露在空间转移martens使用和生存的居民灰松鼠。松鼠范围大小和日常行驶距离显著增加,增加曝光martens但我们没有发现貂的效果在夺回概率(即暴露。明显的生存)采样的松鼠在学习时间。当代,改变非致命影响不等或觅食的松鼠、政权要么避免捕食者和/或更早致命的影响和减少有关种内竞争。应用程序。灰松鼠的条件前沿的自然恢复松貂人口和提供了直接证据松貂易位可以发挥在行为和动力学的影响作用侵袭性非灰松鼠。易位的天敌,主要为生物多样性保护,可以因此找到附加的应用程序管理入侵的生态和经济的影响非猎物。

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