Presenter Information

Elizabeth ThilgesFollow

Major

Environmental Science

Anticipated Graduation Year

May 2022

Access Type

Open Access

Abstract

Anuran (frog and toad) populations are in decline worldwide, including around the Great Lakes. Simultaneously, the abundance of the hybrid cattail, Typha x glauca, has expanded in Great Lakes coastal wetlands. This invasive plant alters wetlands by forming dense stands, negatively impacting anuran species by fragmenting their suitable habitat. To quantify the effects of Typha on different anuran species, sound recorders were placed in paired invaded and uninvaded wetland sites in the spring of 2021 in northern Michigan. Vegetation surveys were conducted around the sound recorders and I listened to the audio data to determine the presence of anuran species.

Community Partners

Sault Tribe Natural Resources Department

Faculty Mentors & Instructors

Drew Monks, School of Environmental Sustainability; Shane Lishawa, School of Environmental Sustainability; Dr. Brian Ohsowski, School of Environmental Sustainability

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License.

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Impacts of Great Lakes Typha Invasion on Anuran Species

Anuran (frog and toad) populations are in decline worldwide, including around the Great Lakes. Simultaneously, the abundance of the hybrid cattail, Typha x glauca, has expanded in Great Lakes coastal wetlands. This invasive plant alters wetlands by forming dense stands, negatively impacting anuran species by fragmenting their suitable habitat. To quantify the effects of Typha on different anuran species, sound recorders were placed in paired invaded and uninvaded wetland sites in the spring of 2021 in northern Michigan. Vegetation surveys were conducted around the sound recorders and I listened to the audio data to determine the presence of anuran species.