Quantifying the activity levels and behavioural responses of butterfly species to habitat boundaries
Quantifying the activity levels and behavioural responses of butterfly species to habitat boundaries
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量化蝴蝶物种对栖息地边界的活动水平和行为反应
DOI：
10.1111/een.12248
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发表时间：
2015
影响因子：
2.2
通讯作者：
MAIR L
中科院分区：
文献类型：
--
作者：
MAIR L
1.物种在支离破碎的景观中经历气候驱动的范围转移的能力取决于它们的扩散能力以及景观的结构。为了使物种的活动范围发生变化，个体必须首先离开合适的栖息地去寻找新的栖息地;这可能取决于个体在栖息地内的移动速度以及一旦遇到边界，跨越边界的可能性。对于三种具有不同近期活动范围扩张历史的蝴蝶，我们研究了个体在栖息地内移动的倾向以及它们对栖息地边界的反应。我们量化了Plebejus argus（Linnaeus）（一种下降的栖息地专家），Aricia agestis（Schiffermuller）（一种扩展的通才）和Polymatus icarus（Rottemburg）（一种地理上无处不在的通才）跨越栖息地边界进入不合适的栖息地并在合适的栖息地内移动的程度。然后将观察到的运动与个人和环境条件相关。不同物种的活动水平与其最近的分布格局一致（P. icarus > A. Agestis >乌鳢（P. argus）。我们的结果为P. argus认为，运动可能是出于寻找花蜜的动机，而且雄性通常比雌性运动得更多。三个物种都倾向于避免跨越栖息地边界，但跨越栖息地边界的个体比例在物种之间没有显着差异。我们的结论是，栖息地内的活动水平，这将影响个人遇到栖息地边界的频率，而不是对边界的行为反应，可能是分布变化的重要驱动因素。
1. The ability of species' to undergo climate‐driven range shifts across fragmented landscapes depends on their dispersal ability as well as the structure of the landscape. For species' range shifts to occur, individuals must first leave suitable habitat to seek new habitat; this is likely to depend on the rate of movement of individuals within habitat and the likelihood that a boundary is crossed, once it is encountered. For three species of butterfly with contrasting histories of recent range expansion, we examined the propensity of individuals to move within a habitat and their responses to habitat boundaries.2. We quantified the extent to whichPlebejus argus(Linnaeus) (a declining habitat specialist),Aricia agestis(Schiffermuller) (an expanding generalist) andPolymmatus icarus(Rottemburg) (a geographically ubiquitous generalist) crossed habitat boundaries into unsuitable habitat and moved within suitable habitat. The observed movement was then related to individual and environmental conditions.3. Species differed in their activity levels in accordance within their recent distribution patterns (P. icarus > A. agestis > P. argus). Our results forP. argussuggest that movement may be motivated by nectar‐seeking, and that males generally move more than females. All three species tended to avoid crossing habitat boundaries; however the proportion of individuals crossing habitat boundaries did not differ significantly among species.4. We conclude that levels of activity within a habitat, which will affect the frequency with which individuals encounter habitat boundaries, rather than behavioural responses to the boundaries, may be important drivers of distribution change.
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影响因子：
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作者：
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