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GLRI: Avian Botulism in Distressed Great Lakes Environments

Summary

The Upper Midwest Environmental Sciences Center (UMESC) in La Crosse, Wisconsin is studying the distribution and foraging patterns of sentinel fish-eating waterbirds through aerial surveys, and by tracking migration movements coupled with foraging depth profiles of common loons equipped with archival geo-locator tags and satellite transmitters. The results of this work are expected to elucidate where piscivorous waterbirds are likely to be exposed to forage fish carrying type-E botulinum toxin, which in turn will inform site-specific efforts to assess the degree to which physical and ecological factors contribute to the occurrence of botulinum toxin in aquatic food webs. Additional resources associated with UMESC's avian ecology projects [...]

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