Name: Submerged aquatic vegetation (MTRI)

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Description: This Submerged Aquatic Vegetation Map was generated by the Michigan Tech Research Institute (MTRI) as part of the Great Lakes Restoration Initiative (GLRI) program through the Untied States Environmental Protection Agency. Cladophora, a nuisance, native green alga that grows attached to solid substrate in all of the Laurentian Great Lakes, has recently expanded in extent, partially due to the activities of invasive quagga and zebra mussels. During significant storm events, it detaches and is transported toward shore, where it fouls water intakes and washes up on lakeshore beaches, causing outbreaks of avian botulism as it decays. Our research question has been, "Can Cladophora extent be mapped using satellites for monitoring of this problem?"A depth-invariant algorithm developed at MTRI was first used successfully with satellite imagery to map Cladophora and other submerged aquatic vegetation (SAV) on the bottom of the Sleeping Bear Dunes National Lakeshore in Lake Michigan under NASA funding. Under a GLRI grant, we have recently mapped the near-shore extent of SAV for Lakes Michigan, Huron, Erie and Ontario (Cladophora is not yet a significant issue in colder Lake Superior). For more information visit: http://www.mtri.org/cladophora.html.

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Copyright Text: Michigan Tech Research Institute

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