Geographical and temporal patterns of lemming population dynamics in Fennoscandia

被引：70

作者：

Angerbjörn, A ^{[1
]}

Tannerfeldt, M ^{[1
]}

Lundberg, H ^{[1
]}

机构：

[1] Stockholm Univ, Dept Zool, SE-10691 Stockholm, Sweden

来源：

ECOGRAPHY | 2001年 / 24卷 / 03期

关键词：

D O I：

10.1034/j.1600-0587.2001.240307.x

中图分类号：

X176 [生物多样性保护];

学科分类号：

090705 ;

摘要：

There is a long-lasting debate in ecology on cyclicity, synchrony and time lags of lemming population fluctuations. We have analysed 137 yr of previously published population data on the Norwegian lemming Lemmus lemmus in ten geographic regions of Fennoscandia. The dominating pattern was synchronous 4-yr cycles. There was no support for the hypothesis of a north-south gradient in cycle length. However. we found periods of prolonged interruptions in the cyclicity, which were more common in northern areas. Wa found a high degree of synchrony between regions. with only a weak relationship to distance, The observed pattern in lemming population dynamics was more consistent with effects from extrinsic factors, such as climate. than intrinsic factors. such as dispersal.

引用

页码：298 / 308

页数：11

共 69 条

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