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The vertical distribution of flying insects in lowland rain forests of panama papua new guinea and brunei


, : The vertical distribution of flying insects in lowland rain forests of panama papua new guinea and brunei. Zoological Journal of the Linnean Society 78(3): 287-297

UV light traps were hung at 4 vertical levels, to monitor the distribution of flying insects in the rain-forests in Panama, Papua New Guinea and 2 sites in Brunei. Large insects were excluded. Insects (98,569) were trapped and the entire catch was analyzed to order and in some cases to lower taxa. Clear vertical stratification was shown by most taxa and in some cases, there was a marked concentration of numbers in the upper canopy at all 4 sites. In others there was no such concentration and considerable differences in vertical distribution were seen between the sites. These differences are discussed in relation to the forest structure at each site and in relation to the results obtained in Zaire. Flying insects in tropical rain-forests are not always concentrated in the upper canopy, although there is a tendency for this to occur where topography and forest structure are simple.

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