Branchlet shaking: a method for sampling tree canopyarthropods under windy conditions
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 sha...
| Main Authors: | , , |
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| Format: | Journal Article |
| Published: |
1996
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| Subjects: | |
| Online Access: | http://www.blackwellpublishing.com/permis.asp?ref=1442-9985 http://hdl.handle.net/20.500.11937/39152 |
| Summary: | 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. |
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