These invasive quagga mussels were caught using a trawl, or fishing net.
Images
Images captured by GLSC scientists while working in and around the Great Lakes.
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Quagga Mussels Caught in Bottom Trawl
These invasive quagga mussels were caught using a trawl, or fishing net.
Female Sea Lamprey Attracted to Male Pheromone Washings, Ocqueoc River
Female Sea Lamprey Attracted to Male Pheromone Washings, Ocqueoc RiverFemale Sea Lamprey Attracted to Male Pheromone Washings, Ocqueoc River, 2013
Female Sea Lamprey Attracted to Male Pheromone Washings, Ocqueoc River
Female Sea Lamprey Attracted to Male Pheromone Washings, Ocqueoc RiverFemale Sea Lamprey Attracted to Male Pheromone Washings, Ocqueoc River, 2013
Yellow Perch from a bottom trawl
Biological Science Technician Betsy Bodamer Scarbro, aboard the R/V Muskie, holds a young yellow perch (Perca flavescens) caught in a bottom trawl during a survey in Lake Erie, 2013.
Biological Science Technician Betsy Bodamer Scarbro, aboard the R/V Muskie, holds a young yellow perch (Perca flavescens) caught in a bottom trawl during a survey in Lake Erie, 2013.
Retrieving a Bottom Trawl
Retrieving a Bottom Trawl Net on the Great Lakes
Retrieving a Bottom Trawl Net on the Great Lakes
Scuba Diver Entering Water
A scuba diver enters the water to complete an underwater survey.
A scuba diver enters the water to complete an underwater survey.
Huron-Erie Corridor Lake Sturgeon
Lake sturgeon collected on restored spawning grounds in the lower St. Clair River.
Lake sturgeon collected on restored spawning grounds in the lower St. Clair River.
Lake Sturgeon Acoustic Telemetry Tagging Surgery
A research biologist conducting surgery on a lake sturgeon to implant an acoustic telemetry transmitter.
A research biologist conducting surgery on a lake sturgeon to implant an acoustic telemetry transmitter.
Huron-Erie Corridor Lake Sturgeon
A communications associate holding a lake sturgeon collected on restored spawning grounds in the lower St. Clair River.
A communications associate holding a lake sturgeon collected on restored spawning grounds in the lower St. Clair River.
Sex Lamprey Sex Pheromone
A research technician holding vial of the sea lamprey sex pheromone, 3kPZS
A research technician holding vial of the sea lamprey sex pheromone, 3kPZS
Carp Lake Outlet Sea Lamprey Barrier
Sea lamprey barrier and trap on the Carp Lake Outlet, used to block migrating sea lamprey from spawning grounds
Sea lamprey barrier and trap on the Carp Lake Outlet, used to block migrating sea lamprey from spawning grounds
A Sea Lamprey at the Hammond Bay Biological Station
A Sea Lamprey at the Hammond Bay Biological StationA sea lamprey (Petromyzon marinus), one of the most destructive invasive species in the Great Lakes. Hammond Bay Biological Station was established to develop control measures for sea lampreys and conduct research to aid native fish restoration.
A Sea Lamprey at the Hammond Bay Biological Station
A Sea Lamprey at the Hammond Bay Biological StationA sea lamprey (Petromyzon marinus), one of the most destructive invasive species in the Great Lakes. Hammond Bay Biological Station was established to develop control measures for sea lampreys and conduct research to aid native fish restoration.
Sea Lamprey Acoustic Telemetry Tagging Surgery
A research biologist conducting surgery on a sea lamprey to implant an acoustic telemetry transmitter
A research biologist conducting surgery on a sea lamprey to implant an acoustic telemetry transmitter
Samplng Cladophora in Indiana Dunes National Lakeshore
Samplng Cladophora in Indiana Dunes National LakeshoreA researcher samples green algae Cladophora along the shoreline of Lake Michigan in Indiana Dunes National Lakeshore in 2012.
Samplng Cladophora in Indiana Dunes National Lakeshore
Samplng Cladophora in Indiana Dunes National LakeshoreA researcher samples green algae Cladophora along the shoreline of Lake Michigan in Indiana Dunes National Lakeshore in 2012.
Trumpeter Swans on a Wetland
A family of Trumpeter Swans sits on the earthen berm enclosing a restored wetland unit at the Ottawa National Wildlife Refuge. Photo Credit: USGS.
A family of Trumpeter Swans sits on the earthen berm enclosing a restored wetland unit at the Ottawa National Wildlife Refuge. Photo Credit: USGS.
Benthic Samples on Crane Creek
USGS researchers deploy a ponar grab sampler to collect benthic samples from Crane Creek. Photo Credit: USGS
USGS researchers deploy a ponar grab sampler to collect benthic samples from Crane Creek. Photo Credit: USGS
St. Clair River Lake Sturgeon on an Artificial Spawning Reef
St. Clair River Lake Sturgeon on an Artificial Spawning ReefLake sturgeon utilizing a newly constructed spawning reef in the Middle Channel of the St. Clair River delta in Lake St. Clair, Michigan, 2012
St. Clair River Lake Sturgeon on an Artificial Spawning Reef
St. Clair River Lake Sturgeon on an Artificial Spawning ReefLake sturgeon utilizing a newly constructed spawning reef in the Middle Channel of the St. Clair River delta in Lake St. Clair, Michigan, 2012
Hammond Bay Biological Station
A view of the Hammond Bay Biological Station in Millersburg, MI.
A view of the Hammond Bay Biological Station in Millersburg, MI.
The Research Vessel Kiyi on a Research Cruise in 2011
The Research Vessel Kiyi on a Research Cruise in 2011The R/V Kiyi, based in Bayfield, Wisconsin, was built in 1999 and currently operates on Lake Superior. The Kiyi conducts fish stock assessment, fisheries research, and habitat monitoring, particularly in the Apostle Islands area of Lake Superior.
The Research Vessel Kiyi on a Research Cruise in 2011
The Research Vessel Kiyi on a Research Cruise in 2011The R/V Kiyi, based in Bayfield, Wisconsin, was built in 1999 and currently operates on Lake Superior. The Kiyi conducts fish stock assessment, fisheries research, and habitat monitoring, particularly in the Apostle Islands area of Lake Superior.
R/V Grayling and R/V Strugeon, Cheboygan
Two of the USGS GLSC's vessels, the R/V Sturgeon and R/V Grayling docked at the Cheboygan Vessel Base in Cheboygan, MI
Two of the USGS GLSC's vessels, the R/V Sturgeon and R/V Grayling docked at the Cheboygan Vessel Base in Cheboygan, MI
Diver Adjusting Acoustic Telemetry Receiver
Diver Chris Holbrook, USGS, Adjusting Acoustic Telemetry Receiver Underwater, Lake Huron. This device will receive signals from acoustic tags implanted into fish, allowing us to monitor their movements.
Diver Chris Holbrook, USGS, Adjusting Acoustic Telemetry Receiver Underwater, Lake Huron. This device will receive signals from acoustic tags implanted into fish, allowing us to monitor their movements.