The R/V Grayling trawls for fish in Lake Huron. The Center maintains five fessels, one on each of the Great Lakes, for fish stock assessment.
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Trawling for Fish
The R/V Grayling trawls for fish in Lake Huron. The Center maintains five fessels, one on each of the Great Lakes, for fish stock assessment.
Placing a Fyke Net in Wetland Vegetation
Glen Black of GLSC and Angela Wahlquist of Northland College places fyke net in wetland vegetation in Fish Creek Slough of Lake Superior near Ashland, Wisconsin, as part of a study of bioindicators of wetland degradation in the Great Lakes. This study is funded by the U.S.
Glen Black of GLSC and Angela Wahlquist of Northland College places fyke net in wetland vegetation in Fish Creek Slough of Lake Superior near Ashland, Wisconsin, as part of a study of bioindicators of wetland degradation in the Great Lakes. This study is funded by the U.S.
Electrofishing Boat
Marc Blouin, NBS Research Biologist, uses an electrofishing boat to obtain information on fish populations in the Black River in Lorain, Ohio.
Marc Blouin, NBS Research Biologist, uses an electrofishing boat to obtain information on fish populations in the Black River in Lorain, Ohio.
Mallard (Anas platyrhynchos)
Removal of esophageal contents from a 2-week old mallard duckling.
Removal of esophageal contents from a 2-week old mallard duckling.
Lethal Injection of a Mallard Duckling
Graduate student Christiane Roy taking a mallard duckling by lethal injection.
Graduate student Christiane Roy taking a mallard duckling by lethal injection.
Placing a Fyke Net in Wetland Vegetation
Glen Black of GLSC and Angela Wahlquist of Northland College places fyke net in wetland vegetation in Fish Creek Slough of Lake Superior near Ashland, Wisconsin, as part of a study of bioindicators of wetland degradation in the Great Lakes. This study is funded by the U.S.
Glen Black of GLSC and Angela Wahlquist of Northland College places fyke net in wetland vegetation in Fish Creek Slough of Lake Superior near Ashland, Wisconsin, as part of a study of bioindicators of wetland degradation in the Great Lakes. This study is funded by the U.S.
Conducting a Breeding Bird Survey
Wildlife Biologist Bruce Hanson conducting a breeding bird survey.
Wildlife Biologist Bruce Hanson conducting a breeding bird survey.
Studying Louisiana Marshland
Dr. Lee Foote, National Wetlands Research Center, studies a Louisiana marshland.
Dr. Lee Foote, National Wetlands Research Center, studies a Louisiana marshland.
Examing a Pelican During a Disease Outbreak
Dr. Kimberli Miller and Minnesota Sate Biologist Joe Marcino (right) examining a pelican during Newcastle disease outbreak.
Dr. Kimberli Miller and Minnesota Sate Biologist Joe Marcino (right) examining a pelican during Newcastle disease outbreak.
Cattle and Cattle Egrets (Bubulcus ibis)
A pair of unidentified grazing cattle (Bovidae Family) with cattle egrets (Bubulcus ibis) in the grass. Deforestation is visible in the background.
A pair of unidentified grazing cattle (Bovidae Family) with cattle egrets (Bubulcus ibis) in the grass. Deforestation is visible in the background.
Removing Blood Sample of Shortnose Sturgeon
Removing a blood sample from a shortnose sturgeon to determine a colorimetric technique for revealing sex and establish contaminant levels.
Removing a blood sample from a shortnose sturgeon to determine a colorimetric technique for revealing sex and establish contaminant levels.
Shortnose Sturgeon (Acipenser brevirostrum)
Scanning shortnose sturgeon for PIT (Passive Integrated Transponder) identification tag, used to permanently mark fish.
Scanning shortnose sturgeon for PIT (Passive Integrated Transponder) identification tag, used to permanently mark fish.
Atlantic Salmon (Salmo salar)
Zoe Zyollewski handles an adult Atlantic salmon caught in the Connecticut River.
Zoe Zyollewski handles an adult Atlantic salmon caught in the Connecticut River.
Biologists Search Transects in a Brand Colony
Biologists search transects in a brand colony to verify detection of nests in video images collected previously.
Biologists search transects in a brand colony to verify detection of nests in video images collected previously.
Transition Zone Between Dams on the Upper Missouri River
Transition Zone Between Dams on the Upper Missouri RiverThe transition zone between the Missouri River and Ft. Peck Reservoir.
Transition Zone Between Dams on the Upper Missouri River
Transition Zone Between Dams on the Upper Missouri RiverThe transition zone between the Missouri River and Ft. Peck Reservoir.
Louisiana Black Bear and Cubs
A threatened Louisiana black bear and her cubs up in a tree.
A threatened Louisiana black bear and her cubs up in a tree.
Gray jay
Gray jay perched on tree in the Presidential Range, White Mountains, NH
Gray jay perched on tree in the Presidential Range, White Mountains, NH
Magnolia warbler
Magnolia warbler in the Presidential Range, White Mountains, NH
Magnolia warbler in the Presidential Range, White Mountains, NH
Yellow bellied flycatcher
Yellow bellied flycatcher in the Presidential Range, White Mountains, NH
Yellow bellied flycatcher in the Presidential Range, White Mountains, NH
Hello Penguin
From the U.S. Geological Survey Photographic Library, No. 2011DENPH0239, folder 3, Field Surveys - Antarctica. It was taken during the U. S. Geological Survey Byrd Land Survey Traverse, United States Antarctic Research Program, 1966-67.
From the U.S. Geological Survey Photographic Library, No. 2011DENPH0239, folder 3, Field Surveys - Antarctica. It was taken during the U. S. Geological Survey Byrd Land Survey Traverse, United States Antarctic Research Program, 1966-67.
Sea Otter Ready for a Nap
This southern sea otter is settling down to rest in a small patch of Egregia (feather boa kelp). Find more sea otter photos at the USFWS Ventura sea otter Flickr gallery.
This southern sea otter is settling down to rest in a small patch of Egregia (feather boa kelp). Find more sea otter photos at the USFWS Ventura sea otter Flickr gallery.