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Seasonal Fluctuations in Rainfall, Food and Abundance of Tropical Insects

Henk Wolda
Journal of Animal Ecology
Vol. 47, No. 2 (Jun., 1978), pp. 369-381
DOI: 10.2307/3789
Stable URL: http://www.jstor.org/stable/3789
Page Count: 13
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Seasonal Fluctuations in Rainfall, Food and Abundance of Tropical Insects
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Abstract

(1) Light trap data, covering over 3 years, are discussed for some groups of insects in the lowland tropical monsoon forest on Barro Colorado Island. The groups concerned are Homoptera, Tettigoniidae and Mantidae. (2) The data are compared with information on rainfall and leaf production. It is shown that, especially for those groups of Homoptera that have nymphs feeding on the foliage, there is a good relation between leaf production and the demography of the species concerned. (3) In all cases the data are discussed in general terms although data per species are available. (4) In some cases anomalies in the rainfall pattern, such as an inch or so of rain in early March, the mid dry season, has a strong positive effect on the populations through increasing leaf production, in other cases it may actually have a negative effect.

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