Spatial interrelationships of bivalves and nonbivalve benthos in a small reservoir in New Brunswick, Canada

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Abstract
Quantitative sampling of macrobenthos in Morice Lake, New Brunswick, showed that the numerical abundance of chironomid larvae and other nonbivalve detritivore species was significantly increased in the vicinity of bivalve molluscs. Experimentally, increased bivalve numbers in tanks led to an aggregated distribution of nonbivalve benthos. Numerical abundance near bivalves was increased, probably due to a behavioral response of the detritivores to an increased food source.