Filamentous nuisance algae such as Cladophora spp. often threaten the quality, aesthetics, and recreational capacity of surface water systems.  In addition, Cladophora may harbor environmental bacteria and pose public heath related risks. This study focuses on the potential relationship between Cladophora and enteric bacteria, represented by E.coli and Salmonella, in the context of water quality of Lake Erie. Microcosms were set up to represent the natural lake environment, and tested for the survival of enteric bacteria when they were associated with algae. The results have shown that Cladophora provides organic exudes and extended protection to bacteria from natural UV irradiation, ultimately causing prolonged survival. Considering the findings, there might be increased risks in public beach waters for individuals upon exposure to pathogenic enteric bacteria harbored by nuisance algae.

Association of enteric bacteria with filamentous nuisance algae Cladophora spp. in Lake Erie

248th National Meeting (2014)

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