2023 Early Hearing Detection & Intervention Conference

March 5-7, 2023 • Cincinnati, OH

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5/22/2018 | 12:15 PM - 12:30 PM | ANALYZING EURASIAN WATERMILFOIL EXTENT AND TREATMENT EFFICACY USING UNMANNED AERIAL SYSTEM (UAS) MULTISPECTRAL IMAGERY | 430 B

ANALYZING EURASIAN WATERMILFOIL EXTENT AND TREATMENT EFFICACY USING UNMANNED AERIAL SYSTEM (UAS) MULTISPECTRAL IMAGERY

Eurasian watermilfoil (Myriophyllum spicatum or “EWM”) is an invasive submerged aquatic plant that can form thick stands and tangled mats of vegetation near the water surface, interfering with navigation, recreation, and native plants. Environmental and natural resource agencies have spent millions of dollars to manage EWM, but it is challenging to quickly and accurately track the extent of EWM infestations and document the efficacy of management methods. We have used unmanned aerial systems (UAS or “drones”) to collect natural color and multispectral images of treatment and control sites to map the extent of EWM establishment and responses to management in nearshore areas of Lake Huron and Lake Superior in Michigan. Results show that with visible and near infrared (NIR) multispectral wavelengths and relatively clear water conditions, UAS-enabled imaging is effective for monitoring EWM extent following management efforts such as treatment with a native fungus to reduce EWM growth, mechanical harvesting, and Diver Assisted Suction Harvesting (DASH). UAS-enabled imaging provides another tool to study the management and ecology of submerged aquatic vegetation in the Great Lakes and beyond.

Remote Sensing
Lentic
Restoration

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Presenters/Authors

Colin Brooks (), Michigan Tech Research Institute, cnbrooks@mtu.edu;