Wood texture was unimportant, as no taxon was found in significantly greater densities on rough-unconditioned-firm wood than smooth-unconditioned-firm wood. Densities of two taxa were significantly greater on rough-conditioned wood than rough-unconditioned wood. Densities of four of the six most abundant taxa were significantly greater on rough-soft wood than rough-firm wood. Larval Chironomidae were numerically dominant on all substrates and their density was affected by the interaction between wood condition and time, as well as wood condition and wood hardness. ![]() rough-unconditioned wood and (2) smooth wood vs. Taxa richness was significantly greater on (1) rough-conditioned wood vs. ![]() In addition, plexiglass rods were used as an inert analog of wood. ![]() Bundles of wood differing in hardness (firm and soft), condition (conditioned and unconditioned), and texture (rough and smooth) were placed in a Michigan stream and colonized for 30, 61 and 91 days. In a field experiment, I examined the effect of wood hardness, condition, texture and substrate type on colonization of stream invertebrates and resulting community structure.
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