Abstract

A study conducted at the University of British Columbia examined the effects of vegetation, chlorination, aeration, and presence of fish, on species abundance in relation to mosquitoes, in ten difference water pools around campus. Floating vegetation was associated with an increased abundance of mosquito non-predatory species (p=0.01), emergent vegetation was associated with an increased abundance of predatory species (p=0.01), and submerged vegetation was associated with an increased abundance of mosquito non-predatory (p=0.02) and predatory species (p<0.01). Presence of chlorination significantly reduced the overall species abundance, both non-predatory (p=0.02) and predatory species(p<0.01), aeration was shown to reduce predatory species abundance (p=0.05) and the presence of fish was associated with a reduced abundance of nonpredatory species (p=0.01) and increased abundance of predatory species (p=0.02). Based on these results and other studies a number of recommendations have been made for effective development and maintenance of water pools on campus.

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