Images

Pancake ice forms near the landing at Harbor Beach, Michigan, while USGS scientists scout for locations to sample for larval fishes at the start of the 2022 Lake Huron Cooperative Science and Monitoring Initiative field sampling season. Photo credit: Cory Brant, USGS.

A USGS researcher prepares a sonar device for deployment and remote operation at the Shiawassee National Wildlife Refuge near Saginaw, Michigan. Photo credit: Sasha Bozimowski, USGS.

USGS and USFWS researchers prepare an Adaptive Resolution Imaging Sonar (ARIS; Sound Metrics Corp., WA, USA) to be deployed at a water control structure. The sonar records fish movement between the Shiawassee River and a restored wetland unit at the Shiawassee National Wildlife Refuge. Photo Credit: Alexandra (Sasha) Bozimowski, USGS

USGS leads the way out on a frozen Muskegon Lake to sample ciscoes with hook and line for morphometrics and acoustic telemetry projects. Photo credit: Cory Brant, USGS.

Andew Honsey is pictured ice fishing for cisco on Lake Charlevoix on 31 January 2022. Photo Credit: Ralph Tingley, USGS.

A cisco (Coregonus artedi) collected by Dr. Walter Koelz on August 20, 1920, in Lake Michigan is photographed and measured by USGS scientists at the University of Michigan Research Museums Center over 100 years later. Photo credit: Cory Brant, USGS.

Dead rhizomes and stems of Phragmites australis are scattered along this beach on Lake Huron.

Great Lakes Science Center Biological Science Technician Ben Leonhardt is holding a big burbot (Lota lota) onboard a research vessel in this 2021 photo.

Non-native Phragmites covers the shores of a wetland as a man in waders walks through the water.  

Electric barriers such as this one on the Black Mallard River in northern Michigan can prevent up-migrating sea lamprey from accessing suitable spawning grounds. Photo credit: Scott Miehls, USGS.

Measuring a Lake Sturgeon in Cayuga Lake as part of the Lake Sturgeon Recovery Plan for New York State, written in 2018. Lake sturgeon can live for more than 100 years and grow to seven feet in length, making them the largest freshwater fish in New York.

Phragmites australis (ssp. australis), or invasive Common Reed, growing high overhead. Photo Credit: Alexndra (Sasha) Bozimowski, USGS.

A slimy sculpin (left) and deepwater sculpin (right), two native sculpin species in the Great Lakes, are compared side-by-side after capture in a bottom trawl during the Lake Huron fall forage survey aboard the R/V Arcticus. Photo credit: Cory Brant, USGS.

A native deepwater sculpin, captured by bottom trawl in the Lake Huron depths off Cheboygan, Michigan, is held for a quick photo op during the USGS Great Lakes Science Center fall forage sampling cruise aboard the R/V Arcticus. Photo credit: Cory Brant, USGS.

Maankiki Center Shiawassee National Wildlife Refuge Banner. Credit: Sasha Bozimowski, USGS

The USGS Great Lakes Science Center R/V Arcticus pulls into port in Cheboygan, Michigan, after a day of sampling in Lake Huron during the annual fall forage cruise. Photo credit: Cory Brant, USGS.

A Phragmites australis stand at Crane Creek in the Ottawa National Wildlife Refuge, Ohio. P. australis is an invasive species in North America.

Phragmites invades coastal wetland in a changing climate. Ottawa National Wildlife Refuge, Oak Harbor, OH. Photo Credit: Kurt Kowalski, USGS-GLSC.

Sunset on Lake Ontario aboard the USGS Great Lakes Science Center’s R/V Kaho. Photo credit: Thomas SanFilippo, USGS.

Alewife peeking out of a pile of mussels caught on the 2021 Lake Michigan fall bottom trawl survey aboard the R/V Arcticus. Photo credit: Patty Dieter, USGS.

A prairie sunflower (Helianthus petiolaris) stands out from the dry landscape of sand and beach grass at West Beach in Indiana Dunes National Park. Photo credit: Johanna Nifosi, USGS.