Great Lakes Restoration Initiative


The Great Lakes Restoration Initiative (GLRI) was established in 2009 to accelerate efforts to protect and restore the Great Lakes. The USGS is collaborating with partners to provide science to meet GLRI Action Plan goals and inform resource management decisions.


Date published: March 6, 2019

Newly Hatched Invasive Grass Carp Found in Maumee River, Ohio

A genetic analysis conducted by the U.S. Geological Survey recently confirmed that  larval, or newly hatched, fish collected from the Maumee River during the summer of 2018 are grass carp, one species of invasive Asian carps that threaten the Great Lakes. The Maumee River is a tributary to Lake Erie.

Date published: October 9, 2018

Students visit GLSC Chesterton lab to learn about microbiology applications

Students from Indiana University Northwest visited the Lake Michigan Ecological Research Station (GLSC, Chesterton, Indiana).

Date published: March 9, 2018

Tree Swallow GLRI Story Map

This Story Maps accompanies 4 peer-reviewed publications to provide a convenient and useful tool to access the information contained within these four peer-reviewed publications.  The tree swallow data are easily visualized on a landscape scale, or more detail can be obtained by drilling down.  These data are being used by States and EPA in their Beneficial Use Impairment (BUI) assessments. ...


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Year Published: 2021

Telemetry evaluation of carbon dioxide as a behavioral deterrent for invasive carps

Carbon dioxide (CO2) mixed into water is being explored as a possible management strategy to deter the upstream movements of invasive carps through navigation locks and other migratory pinch-points. This study used two-dimensional acoustic telemetry to assess the effectiveness of dissolved CO2 as a chemosensory deterrent to two carp species...

Cupp, Aaron R.; Lopez, Ashley K; Smerud, Justin R.; Tix, John A.; Rivera, Jose M.; Swyers, Nicholas M.; Brey, Marybeth; Woodley, Christa M; Smith, David L.; Gaikowski, Mark P.

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Year Published: 2021

Status of the major aquaculture carps of China in the Laurentian Great Lakes Basin

There is concern of economic and environmental damage occuring if any of the four major aquacultured carp species of China, black carp Mylopharyngodon piceus, bighead carp Hypophthalmichthys nobilis, silver carp H. molitrix, or grass carp Ctenopharyngodon idella, were to establish in the Laurentian Great Lakes. All four are...

Chapman, Duane C.; Benson, Amy J.; Embke, Holly S.; King, Nicole R.; Kocovsky, Patrick; Lewis, Teresa D.; Mandrak, Nicholas E.

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Year Published: 2020

Toxicity of carbon dioxide to freshwater fishes: Implications for aquatic invasive species management

Carbon dioxide (CO2) has been approved by the US Environmental Protection Agency as a new aquatic pesticide to control invasive Asian carps and other aquatic nuisance species in the United States. However, limited CO2 toxicity data could make it challenging for resource managers to characterize the potential risk to nontarget species during...

Cupp, Aaron R.; Smerud, Justin R.; Thomas, Linnea M; Waller, Diane L.; Smith, David L.; Erickson, Richard A.; Gaikowski, Mark P.