Abstract

Abstract Environmental water monitoring is an important responsibility of municipal governments. In this study, we partnered with several municipalities in an extensive sampling program to investigate the effects of spatiotemporal and environmental factors on bacterial diversity in a complex watershed ecosystem containing specific environments including creeks, a river, canals, stormwater outfalls and freshwater lakes of the Niagara Peninsula. Samples were collected using standard municipal protocols and bacterial DNA extracted from these samples was sequenced using high-throughput DNA sequencing targeting the V3–V4 regions of the 16S rRNA gene. Average taxonomic richness and alpha diversity differed significantly between samples collected from lakes and creeks (P

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