Images

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.

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.

Dr. Jacqueline Savino, fishery biologist, and Gentry Yearout, volunteer, remove fish for research from a tank in the fish holding room at the Great Lakes Science Center.

The Hell Creek and underlying Fox Hills Formations are present at the land surface along the margins of the Williston Basin, but otherwise are the deepest bedrock aquifers that are commonly used in the basin.

Here is a study deer after capture and being radio-collared. The tracking information from this collar will enable researchers and managers to track the migrations of mule deer and evaluate their habitat and population performance and will aid in management of mule deer populations in Wyoming.  

A hatched embryo of a pallid sturgeon. 

The red color is due to the abundance of this organism; the red is due to the presence of astaxanthin, a pigment in the cells.

Middle fork of the Salmon River near Shoup, Idaho.

Brown pelicans and gulls float and fly along a coastline.

Adult, immature adult, and nymph state box elder bugs gather on the ground in a residential garden under a silver maple tree.

Wyoming Cooperative Fish and Wildlife Research Unit - Laura Linn checking for ticks and Scott Becker calling helicopter during moose captures in the Buffalo Valley, Wyoming.

The USGS researches land use and honey bee health in the northern Great Plains. This research will be useful in equipping land managers and policy makers with the best-available science to improve forage and habitat for pollinators in a part of the country that is undergoing rapid land-use change.

Honey bees live and work in highly collaborative, social colonies with a sole reproducing queen, and they make honey by storing nectar from flowering plants in their hives for use during food scarcities.

Giant sequoias have fared better than other tree species in California's recent hotter drought, but many have shown unprecedented foliage dieback in response to the drought.

Closeup shot of the same area above. The cross-cutting feature is a road cut going through the fault.

USGS scientist Game McGimsey gathers equipment for an aerial observation and gas monitoring flight.

Scientists Jonathan Godt and Rex Baum examine a fresh debris-flow deposit near Buena Vista, CO.

North American Bird Phenology Program Coordinator Jessica Zelt working with old migration bird cards.

Yellow-headed blackbird fledgling. This species is also recorded in the Bird Phenology Program cards.

Workers repairing a road.