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Synchrony of Population Fluctuations: The Dominant Influence of Widespread Factors on Local Butterfly Populations
Vol. 60, No. 1 (Feb., 1991), pp. 7-10
Stable URL: http://www.jstor.org/stable/3544985
Page Count: 4
You can always find the topics here!Topics: Butterflies, Species, Population ecology, Population density, Population growth rate, Weather, Population trends, Insect ecology, Heathlands, Population size
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Fluctuations in the abundance of butterflies at many sites in Britain are monitored in a national scheme. Both annual fluctuations and long term trends at individual sites are often very closely synchronised with regional data which excludes the study sites. I argue from such synchrony: (1) that these population are likely to be limited by density-dependent factors and (2) that population fluctuations are little influenced by interactions which are specific to local communities.
Oikos © 1991 Nordic Society Oikos