EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
5/27/2021 | 2:00 PM - 3:30 PM | Distribution of Native and Non-native Crayfishes and Macrophytes in Small Lentic Waterbodies in the Chicago Region | Virtual Platform
Distribution of Native and Non-native Crayfishes and Macrophytes in Small Lentic Waterbodies in the Chicago Region
Aquatic ecosystems in the Chicagoland area connect the Mississippi River and Great Lakes Basins, creating concerns for the spread of aquatic invasive species. Small lentic waterbodies in the area have rarely been sampled for native and non-native species and little is known about the role these waterbodies play for the conservation of native species and the spread of invaders. To address this, we sampled crayfish and macrophytes in 66 small waterbodies during summer 2020. The most widespread crayfish found was rusty crayfish (Faxonius rusticus), and it was most likely to be found at waterbodies where angling is promoted (p=0.0069). Red swamp crayfish (Procambarus clarkii) – another invader – was found at one site. Many small waterbodies contained populations of native crayfish species. The most common invasive macrophytes sampled were Eurasian watermilfoil (Myriophyllum spicatum) and curly pondweed (Potamogeton crispus). These species were most likely to be found in the presence of each other. Our results indicate that small lentic waterbodies serve as both sites for invasion and important habitat for native species. Management efforts that work to limit spread of invasive species would help to prevent the loss of native species.
- Management
- Biodiversity
- Habitat
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Presenters/Authors
Carter Cranberg
(), Loyola University Chicago, ccranberg@luc.edu;
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Reuben Keller
(), Loyola University Chicago, rkeller1@luc.edu;
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