We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Colonization of leaf patches at topographically different locations by insect shredders in a small mountain stream.
- Authors
Takashi Kagaya
- Abstract
<div class="Abstract"><a name="Abs1"></a><span class="AbstractHeading">Abstract </span>We examined physical constraints on the colonization of leaf patches by shredder individuals by comparing the colonizations of artificially standardized leaf patches placed at different locations within a stream reach (i.e., riffles, middles and edges of pools). Stonefly taxa (Nemoura, Protonemura) colonized riffle patches 2–10 times more often than pool (middle, edge) patches, whereas caddisfly taxa (two species of Lepidostoma, Nothopsyche) almost exclusively colonized pool patches. Colonization also differed between the middle and edge patches in pools for most taxa; it was 2–5 times greater in edge patches for Nemoura and in middle patches for Lepidostoma. The abilities of species to cope with low oxygen circulation and high shear stress appear to determine differences in colonization between riffle and pool patches, whereas species-specific dispersion behavior (e.g., return time from drift) may differentiate colonization between middle and edge patches in pools. Our results suggest that changes in leaf distribution within a reach can affect the suitability of stream reaches in terms of food acquisition for shredder individuals. </div>
- Subjects
INSECT-plant relationships; PLANT colonization; STONEFLIES; NEMOURA; FOLIVORES; ANIMAL species; ANIMAL classification; LAKE ecology; EFFECT of stress on animals; MOUNTAINS
- Publication
Limnology, 2009, Vol 10, Issue 2, p143
- ISSN
1439-8621
- Publication type
Article