Effects of sedimentation on the behavior and distribution of riffle insects in a laboratory stream1
作者:
W. T. Mcclelland,
M. A. Brusven,
期刊:
Aquatic Insects
(Taylor Available online 1980)
卷期:
Volume 2,
issue 3
页码: 161-169
ISSN:0165-0424
年代: 1980
DOI:10.1080/01650428009361022
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Studies were conducted to determine the effects of 3 levels of sedimentation on the behavior and distribution of selected mayflies, stoneflies and caddisflies in artificial laboratory streams. Most species responded negatively to increased levels of sedimentation; all preferred unsedimented over heavily sedimented substrate. Sensitivity to sedimentation differed among species with size, morphology, and behavior accounting for much of the variation. As sediment levels increased, more of the test substrate became uninhabited. Density per cobble increased only slightly with greater quantities of fine sediment. Nonburrowing species were unsuccessful in gaining access beneath cobbles when the undersurfaces and sides were sealed in fine sediments.
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