Vole population dynamics: factors affecting peak densities and amplitudes of annual population fluctuations of Microtus pennsylvanicus
作者： Lowell L. Getz , Madan K. Oli , Joyce E. Hofmann , Betty McGuire
DOI: 10.1007/BF03194211
关键词: Animal science 、 Microtus 、 Population 、 Ecology 、 Reproduction 、 Animal ecology 、 Population growth 、 Vole 、 Population density 、 Biology
摘要: We studied factors affecting peak densities and amplitudes of fluctuation during 20 annual population fluctuations ofMicrotus pennsylvanicus Ord, 1815 in alfalfa bluegrass habitats over a 25-year period. Survival was correlated with density the 25 years most consistent variable associated stoppage growth. Although not years, decline proportion reproductively active adult females contributed to cessation growth that peaked late autumn-winter, eight eleven summer-early autumn. conclude variation survival be primary factor ofM. pennsylvanicus.
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