Images

Introduced Phragmites australis, also called the common reed, is an invasive grass in the Great Lakes.

Photo of Tahquamenon River, MI 

Toxic Substances and Areas of Concer

This image shows a sea lamprey in its larvae phase.

A Phragmites rhizome, or a belowground stem that puts up new shoots, dug up in a coastal marsh of Lake Erie in northern Ohio. Phragmites' belowground biomass can exceed that of its aboveground biomass. 

Phragmites can evade common control methods, like aerial spraying, when it grows under tall tree canopies, such as those that occur at many managed wetland sites. Photo Credit: USGS-Great Lakes Science Center

Fog surrounds the USGS Research Vessel Arcticus as it comes into port at Sturgeon Bay, Wisconsin.

Kasia Przybyla-Kelly, ecologist at the Lake Michigan Ecological Research Station collecting samples for eDNA sequencing in the search for Round Goby in Thunder Bay, Lake Huron, MI. Photo Credit: USGS.

A scientist performing PAMF’s monitoring protocol on a Phragmites patch near Schoolcraft, Michigan.

Autonomous Underwater Vehicle (AUV) in Lake Huron near Alpena preparing to dive on a transect.

Two Great Lakes Science Center employees are seen in this 2017 image on the shore of Lake Erie. Common Reed (Phragmites australis) is seen in the foreground. Photo Credit: Samuel Schurkamp, USGS

A cisco

Lake Sturgeon Eggs

Detroit River Substrate

Freshwater Sponges in the Detroit River

Large Boulders with Dreissenid Mussels in the Detroit River

Darryl Hondorp, USGS-GLSC presents Lake Huron prey fish data in a meeting in Ypsilanti, Michigan in 2017. Photo Credit: Jean Adams, USGS-GLSC.

USGS scientist Nick Johnson isn’t afraid to get dirty. Here he is expressing green feces from a parasitic sea lamprey. DNA in the feces may help USGS scientists discover the identity of sea lamprey’s last meal. 

Veiw of the Great Lakes from space on the ISS

Ecologist Lindsay Hunt from the Lake Michigan Ecological Research Station at a 2016 meeting in Lansing, Michigan.

A multiparameter probe collects water quality data for the Great Lakes Restoration Initiative-funded coastal wetland restoration work. Photo Credit: USGS.

NYS DEC Oneida Fish Hatchery; native species; Restoration Ecology; Tunison Lab Aquatic Sciences; New York; Lake sturgeon; Dawn Dittman USGS; fingerling; 43.21988, -77.61486; Lake sturgeon implanted with radio chip and tagged with yellow floy tag;