Images

Pair of pronghorn in a snow-covered prairie near Medicine Bow, Wyoming. Pronghorn are mainly found in the U.S., with Wyoming being particularly important to this species.

Scientists use grids to collect alpine plant data according to GLORIA protocols on the summit of Bison Mountain in Glacier National Park, Montana.

Researchers evaluate vegetation during a GLORIA alpine plant survey near the summit of Seward Mountain in Glacier National Park, Montana.

Sediment core sample taken at Grubers Grove Bay on the Wisconsin River, Wisconsin.

Behind a row of fence posts is a row of wind turbines that are part of a wind facility located in Wyoming. 

Environmental DNA sampler (located in metal housing)  in USGS stream gage along the Snake River

USA-NPN Pheno Forecast of emerald ash borer adult emergence. Yellow areas indicate locations that will have reached the accumulated temperature requirements for adult emergence as of April 1, 2019.

Left: Prototype ABS plastic eel climbing ramp under development and testing at CAFRL. New substrate design allows for passage of a wider size range of eels with less need for precise flow regulation. Right: juvenile eel climbing wetted ABS plastic substrate.

A tractor using a grass-seed drill to plant a tallgrass prairie site in Minnesota.

Pair of pronghorn in a snow-covered prairie near Medicine Bow, Wyoming. Pronghorn are mainly found in the U.S., with Wyoming being particularly important to this species.

USGS researchers are assessing the spread of invasive annual grasses in sagebrush and grassland ecosystems of Montana, North Dakota, and South Dakota. 

A silver-phase American Eel in a northeastern river begins migrating downstream to the ocean to spawn in the Sargasso Sea. The migration can span hundreds of kilometers in freshwater rivers and thousands of kilometers at sea.

Radio-tagged silver phase American Eels being released for a CAFRL telemetry study of downstream passage of eels at hydroelectric dams on the Shetucket River, Connecticut.

Prototype design of an airlift developed at CAFL to transport downstream migrant eels through a bypass pipe and away from turbine intakes. The airlift design passes eels as well as a conventional siphon or gravity pipe.

Aerial photo of ʻōhiʻa forest on Hawaii Island, including dieback resulting from Rapid Ohia Death.

ʻŌhiʻa seedlings in dibble tubes, prior to planting.

Scientists collect alpine plant species and distribution data to complete a GLORIA site inventory on the summit of Seward Mountain, Glacier National Park, Montana.

Apparatus used to test the sensitivity of eels to low-voltage pulsed DC electric fields. Knowledge of sensitivity of eels to electric fields enables development of behavioral barriers that use electricity to guide eels away from turbine intakes.

Ohia seedling.

Barred Tiger Salamander Paedomorph, Cottonwood Lake Study Area, North Dakota. Some barred tiger salamanders never metamorphose and keep their larval features (e.g., gills, finlike tail) their whole lives as reproductively mature adults known as paedomorphs, which can grow to be 14 inches in length.

These images show grass carp larvae from the Maumee River. Characteristics of larval grass carp include overall length (left), skeletal muscle development (center) and presence of an eye spot that lacks pigmentation (right; pigment starting to develop on lower eye).