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首页> 外文期刊>Canadian Journal of Zoology >Synchrony in Svalbard reindeer population dynamics
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Synchrony in Svalbard reindeer population dynamics

机译:斯瓦尔巴群岛驯鹿种群动态同步

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摘要

We examined potential synchrony in the growth rates of three Svalbard reindeer (Rangifer tarandus platyrhynchus) populations and tested whether this pattern may result from correlated environmental variation. Two neighbouring populations had synchronized dynamics during the study period, while a more distant population showed different temporal variation. Climatic forcing (the Moran effect) was a likely synchronizing mechanism in combination with contrasting density-dependence patterns between the synchronous and asynchronous populations. Local climate was a more important synchronizing agent than a regional climate index (the Arctic Oscillation). Nevertheless, our results also suggest that variation in climate at a large scale may be important. Based on indirect measurements of dispersal/migration, our findings indicate that this factor does not play a key role in the spatial synchrony of Svalbard reindeer population dynamics.
机译:我们检查了三个斯瓦尔巴特驯鹿(Rangifer tarandus platyrhynchus)种群增长速度的潜在同步性,并测试了这种模式是否可能由相关的环境变化引起。在研究期间,两个邻近的种群具有同步的动态,而距离较远的种群表现出不同的时间变化。气候强迫(莫兰效应)是一种可能的同步机制,与同步种群和异步种群之间的密度依赖模式形成对比。本地气候比区域气候指数(北极涛动)更重要。然而,我们的结果也表明,大规模的气候变化可能很重要。基于对扩散/迁移的间接测量,我们的发现表明,该因素在斯瓦尔巴德驯鹿种群动态的空间同步性中不发挥关键作用。

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