| 1 | Relationship between El Nino /South Oscillation(ENSO) and population outbreaks of some lemmings and voles in Europe显示文摘Ecologists have been puzzled by population cycles of lemmings and voles for the over 70 years. At present, our understanding and explanation to this phenomenon remain controversial. Recently, El Nino/South Oscillation has attracted attention of ecologists on its links with population outbreaks of terrestrial animals. This paper aims to investigate the statistical relationship between outbreaks of microtine rodents and ENSO events by scanning available literature. During 1862-1894, outbreaks of Norway lemmings in Norway tended to occur in the Southern Oscillation Index (SOI) peak years or 1 year after the SOI peak years with an approximate significance level (p = 0.057). During 1885-1931, outbreaks of voles in France tended to occur 1 year before the SOI peak years (p = 0.01). During 1946-1993, outbreaks of lemmings and voles in North Finland tended to occur 1 year before the SOI peak years with a significant level (p = 0.022); the peaks of population abundance corresponded well to the SOI trough years | ZHANG ZhibinNational Key Laboratory of Integrated Management of Pest Insects and Rodents in Agriculture, Institute of Zoology, Chinese Academy of Sciences, Beijing 100080, China (e-mail: zhangzb@panda.ioz.ac.cn) | 2001 | Chinese Science Bulletin2001，46，13： | 3 |
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