Images

This is an image of USGS employees working at a field site for a mussel restoration project.

This is an image of a mussel silo that has been deployed in the Clinton watershed.

Douglas Hardesty, a USGS employee, holds a handful of juvenile Fatmucket mussels which are intended for reintroduction.

Mussels recovered from a silo in October for Columbia Environmental Research Center's mussel restoration project. 

Floating Upweller System (FLUPSY) that houses growing mussels intended for reintroduction. This FLUPSY is at the Columbia Environmental Research Center.

This is an image of a mussel silo used for CERC-USGS mussel restoration efforts. The mussel silo is a bunker that houses mussels while they grow.

This is a photo of a USGS employee holding a handful of Fatmucket mussels at Columbia Environmental Research Center. These mussels will be used for reintroduction. 

Juvenile Black Carp Mylopharyngodon piceus of about 100 millimeters total length

Comparison of juvenile Silver Carp Hypophthalmichthys molitrix (top left), Grass Carp Ctenopharyngodon idella (top right), Bighead Carp Hypophthalmichthys nobilis (bottom left), and Black Carp Mylopharyngodon piceus (bottom right) of about 80–100 millimeters total length.

Juvenile Grass Carp Ctenopharyngodon idella of about 70 millimeters total length.

Comparison of Bighead Carp Hypophthalmichthys nobilis (top) and Silver Carp Hypophthalmichthys molitrix (bottom) of about 80–110 millimeters total length.

Juvenile Silver Carp Hypophthalmichthys molitrix of about 70 millimeters total length.

This image shows three sizes of the juvenile Silver Carp (Hypophthalmichthys molitrix).

National Park Service Biological Technician Eileen Kramer harvests her first white-tailed deer in New York.

An infographic highlighting a study finding that black carp, which are an invasive fish species in North America, are now known to be established in the wild in parts of the Mississippi River basin. The infographic was created by the USGS. The USGS was one of the study’s co-authors and the research was led by Southern Illinois University.

A map of black carp observations in the Mississippi River basin reported to the USGS Nonindigenous Aquatic Species database as of November 30, 2022. This map is not a complete representation of species abundance or distribution. These data include incidental captures by the public and reports from federal and state agencies.

USGS Research Biologist Nathan Johnson’s son Bryce harvests his first white-tailed deer on private property near High Springs, Florida.

The Toxicology exposure facilities consists of 23 water baths consisting of small (A) and large (B) baths with proportional diluters capable of delivering at least 6 different concentrations.

A basic overview of the nitrogen cycle. Red arrows represent the portions of the nitrogen cycle (decomposition and nitrification) that are performed by our laboratory’s microbial culture.

Scientists from the U.S.

Scientists from the U.S.