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旅鼠(Lemmus spp)和田鼠(Microtus spp)种群暴发问题已困扰种群生态学家70余年, 目前对这一现象的解释仍然不能令人满意. 最近, 厄尔尼诺-南方涛动现象与动物种群发生的关系开始引起生态学家的注意. 依据文献资料, 研究了欧洲的旅鼠和田鼠种群暴发与厄尔尼诺-南方涛动(El Nino/Southern Oscillation, ENSO)的关系. 研究发现: 1862-1894年, 挪威的旅鼠倾向于在南方涛动指数(SOI)高峰值年或次年大发生(P = 0.057); 在1885-1931年, 法国的田鼠倾向于在SOI的高峰值的前一年大发生(P = 0.01); 在1946-1993年, 芬兰北部的旅鼠和田鼠倾向于在SOI高峰值的前一年大发生(P = 0.022), 其种群密度高峰期基本对应SOI低谷期(通常是SOI高峰值的前一年); 在1946-1975年, 波兰的田鼠倾向于在SOI的高峰值或前一年大发生(P = 0.011), 也倾向于在SOI的高峰值的前一年大发生(P = 0.030); 挪威的旅鼠与法国的田鼠, 以及波兰与芬兰的鼠类种群暴发均有很大的同步性. 研究认为, 与ENSO关联的气候或食物可能是欧洲的旅鼠和田鼠种群暴发的关键因子.
The outbreak of Lemmus spp and Microtus spp populations has plagued population ecologists for more than 70 years and the explanation for this phenomenon is still unsatisfactory at present.Recently, the El Ni --Southern Oscillation phenomenon has been associated with animal populations The relationship began to attract the attention of ecologists.According to the literature, the relationship between the outbreak of lemmings and vole populations in Europe and El Nino / Southern Oscillation (ENSO) was studied.The study found that from 1862 to 1894, Norway (P = 0.057) tended to peak in the Southern Oscillation Index (SOI) (P = 0.057); in the period 1885-1931 the French voles tended to predominate in the year before the peak SOI P = .01). In the period 1946-1993, lemmings and voles in northern Finland tended to occur predominantly in the year preceding the high SOI (P = .022) and their population density peak corresponds essentially to the SOI trough (usually SOI Voles in the year 1946-1975 tended to peak at the peak of SOI or in the previous year (P = 0.011), and also tended to predose the year before the peak of SOI (P = 0.030); Norwegian lemmings and French voles, as well as waves The outbreak of rodent stocks in Finland and Finland is highly synchronized, and studies suggest that the climate or food associated with ENSO may be a key factor in the outbreak of lemmings and voles in Europe.