Synchronous dynamics of Microtine rodent populations on Islands in Lake Inari in Northern Fennoscandia-Evidence for regulation by Mustelid predators
Synchronous dynamics of Microtine rodent populations on Islands in Lake Inari in Northern Fennoscandia-Evidence for regulation by Mustelid predators
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芬诺斯坎迪亚北部伊纳里湖岛屿上鼠类啮齿动物种群的同步动态——鼬类捕食者调节的证据
作者：
J. Heikkilae;A. Below;I. Hanski
我们在五年内调查了芬兰拉普兰伊纳里湖 17 个岛屿上小型哺乳动物的密度，以估计田鼠啮齿动物（Clethrionomys、Microtus）和鼩鼱（Sorex）动态的空间同步程度。在拉普兰，田鼠啮齿动物的种群周期为 4-5 年。大多数岛屿啮齿动物种群与大陆种群完全同步，并且彼此之间完全同步，同岛啮齿动物和鼩鼱种群也显示出大致同步的种群变化。少数例外包括小而孤立的田鼠种群不同步波动
We surveyed the densities of small mammals on 17 islands in Lake Inari in Finnish Lapland during 5 yr to estimate the degree of spatial synchrony in the dynamics of microtine rodents (Clethrionomys, Microtus) and shrews (Sorex). Microtine rodents have a 4-5 yr population cycle in Lapland. Most island populations of microtine rodents were in complete synchrony with the mainland populations and each other, and the same-island rodent and shrew populations showed largely synchronous population changes. The few exceptions included small and isolated populations of Microtus oeconomus fluctuating out of synchrony