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[E-1.3 Studies on Community Structure of Animals in Tropical Forests]

[Contact Person]

Yoshitaka Tsubaki
Global Environment Division
National Institute for Environmental Study
Environmental Agency
16-2 Onogawa, Tsukuba, Ibaraki 305 Japan
Phone +81-298-50-2482, Fax +81-298-51-4732
E-mail tsubaki@nies.go.jp

[Total Budget for FY1993-1995]

44,179,000 Yen (FY1995 13,527,000 Yen)

[Abstract]

　We carried out 4-year continuous monitoring of the community and populations of small mammals in the Pasoh Forest Reserve. The species diversity of small mammals was low in the secondary forest than in the primary one. This may be due to 1: undeveloped vertical structure of the forest, 2: low horizontal heterogenity, 3: reduction of food supply, and 4: reduction of nesting sites. Spiders were collected with a beating method in March and July 1994. Salticidae and Theridiidae were common on trees and the number of spiders was more abundant in the middle height of the forest. Number of land snail species and population density in lime stone area were lager than granite area and most of them appear to depend on Ca from lime stone.

[Key Words]

Tropical Forest, Small Mammal, Spiders, Land Snail, Community, Population