EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
5/24/2021 | 8:30 AM - 10:30 AM | SPECIES DISTRIBUTION MODELING OF NATIVE UNIONID AND INVASIVE DREISSENID MUSSELS IN TWO LARGE RIVER SYSTEMS OF THE LAURENTIAN GREAT LAKES | Virtual Platform
SPECIES DISTRIBUTION MODELING OF NATIVE UNIONID AND INVASIVE DREISSENID MUSSELS IN TWO LARGE RIVER SYSTEMS OF THE LAURENTIAN GREAT LAKES
The establishment of dreissenid mussels within the Lake St. Clair and the St. Clair-Detroit River system of the Laurentian Great Lakes region seemingly pushed native freshwater mussels (Bivalvia: Unionidae) to extirpation. To assess remnant unionid and invasive dreissenid populations in these rivers, the Detroit River was surveyed in 2019 using a mixture of stratified random, historical, and potential refuge sites (n = 56). Two hundred and twenty live unionids representing 11 species were found among 5 sites and more than 2,000 unionid shells of 31 species were collected. The highest dreissenid densities were concentrated in the upper half of the Detroit River and estimated densities ranged from 0 to 5,673 live dreissenids m-2. Species distribution models using MaxEnt have been created for unionids and dreissenids using the data collected from the Detroit River in 2019 revealing approximately 12% of the total Detroit River area and 3% of the total St. Clair River area to be suitable habitat for unionids. Models will be validated in the St. Clair River in summer 2021 and will facilitate further understanding of native and invasive mussel distributions in large river systems.
- Habitat
- Species interactions
- Conservation
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Presenters/Authors
Shay S. Keretz
(), Central Michigan University, allre1s@cmich.edu;
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Daelyn A. Woolnough
(), Central Michigan University, wooln1d@cmich.edu;
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Todd J. Morris
(), Great Lakes Laboratory for Fisheries and Aquatic Sciences, Fisheries and Oceans Canada, todd.morris@dfo-mpo.gc.ca;
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David T. Zanatta
(), Central Michigan University, zanat1d@cmich.edu;
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