Branchlet shaking: a method for sampling tree canopyarthropods under windy conditions
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Chemical knockdown is a commonly used method for sampling canopy arthropods. The procedure is susceptible to high winds and in certain conditions may be virtually unusable. Here we introduce a new procedure, branchlet shaking, and compare it with chemical knockdown. Samples produced by branchlet shaking yield fewer arthropods per tree and tend to miss some larger (>l.Ocm) and some smaller (<O.2cm) animals. However, the two procedures generally produce data which can portray similar information about the canopy fauna. It is concluded that although chemical knockdown is a superior sampling procedure, branchlet shaking is a possible alternative for situations where chemical knockdown is impractical. Interpretation of the data must, however, take into account the limitations of the branchlet shaking procedure.
J.D. Majer, H. Recher, N. Keals (1996) Branchlet shaking: a method for sampling tree canopy arthropods under windy conditions, Australian Journal of Ecology v.21 pp.229-234
Blackwell Publishing Ltd. Reproduced with permission.
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