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Estimation of arboreal arthropod density in a dry evergreen forest in Northeastern Thailand

Published online by Cambridge University Press:  10 July 2009

Hiroyuki Watanabe  and
Sawaeng Ruaysoongnern
Hiroyuki Watanabe
Affiliation:
Division of Tropical Agriculture, Faculty of Agriculture, Kyoto University, Kyoto, 606Japan
Sawaeng Ruaysoongnern
Affiliation:
Department of Soil Sciences, Faculty of Agriculture, Khon Kaen University, Khon Kaen, 40002, Thailand
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Abstract

The density of arboreal arthropods in a dry evergreen forest in Northeastern Thailand was investigated by the insecticide fogging (knockdown) method. Arthropod densities of 256.4 and 140.4 m-2 were recorded in the dry season and 195.2 and 123.1 m-2 in the rainy season. The main orders were Collembola, Thysanoptera, Hymenoptera (mainly Formicidae) and Hemiptera. Distinct differences were not found in the arthropod faunal structure and density between the dry and rainy seasons. However, this fauna is completely eliminated by the clearing and burning of forest for shifting cultivation.

The results of an experiment investigating the rate of arthropod fall after application of insecticide are presented and problems concerning the efficiency of the estimation methods used in this study are discussed.

Keywords

arboreal arthropodsdry evergreen forestinsecticide foggingshifting cultivationThailand
Type
Research Article
Information
Journal of Tropical Ecology , Volume 5 , Issue 2 , May 1989 , pp. 151 - 158
Copyright
Copyright © Cambridge University Press 1989

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