Geographical and temporal patterns of lemming population dynamics in Fennoscandia
2001 (English)In: Ecography, ISSN 0906-7590, E-ISSN 1600-0587, Vol. 24, no 3, 298-308 p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2001. Vol. 24, no 3, 298-308 p.
SPATIAL AUTOCORRELATION, MICROTINE CYCLES, SMALL RODENTS, SYNCHRONY, NORWAY, VOLES, TUNDRA
Research subject Animal Ecology
IdentifiersURN: urn:nbn:se:su:diva-29673ISI: 000169881400007ISBN: 0906-7590OAI: oai:DiVA.org:su-29673DiVA: diva2:234719
ISI Document Delivery No.: 452VY Times Cited: 20 Cited Reference Count: 682009-09-102009-09-102014-10-13Bibliographically approved