Abstract
ABSTRACT Trichopterans were collected from both coarse woody debris (CWD) and benthic habitats from three streams in northwest Arkansas from February 1992 through February 1993. Overall density of caddisflies was significantly greater in benthic habitats than on CWD. Trichopteran larvae had significantly greater densities during summer and fall than during winter and spring. Lype diversa was the only species that showed a preference for decay stage and was collected in greatest densities on wood with loose bark or on decayed wood with many interstitial spaces. No species tested showed a preference for volume of biofilm. However, on wood with bark remaining, wood with bark of rough texture produced greater densities of caddisflies than did wood with smooth bark.
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