Abstract
AbstractCanopy knockdown of arthropods using mist-blowing was carried out in Brumas, Sabah (north-east Borneo), in plantations of exotic (non-indigenous) tree species (Acacia mangium, Eucalyptus deglupta, Gmelina arborea, Paraserianthes[=Albizia]falcataria, andPinus caribaea), plus secondary natural forest and dense understorey withinE. degluptastands. Each habitat had three 1 m2samples taken four times in one year. The average arthropod species richness within the stands of the exotic tree species ranged from 27 inE. deglupta, to 68 in natural, secondary forest. The total number of individuals caught ranged from 137 in G.arboreato 1628 in secondary forest. The dense and plant-species rich understorey withinE. degluptastands yielded both higher numbers of species and individuals than the eucalypt trees themselves, indicating the importance of allowing the development of a luxuriant understorey for the enhancement of conservation and biodiversity. Though arthropod biodiversity is reduced by the conversion of tropical forests to plantations, abundance and richness are still substantial in the latter habitats.
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