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.
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Barred tiger salamander (paedomorph)
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.
View of Instrument Lab at the Organic Geochemistry Research Laboratory at the KS WSC
View of Instrument Lab at the Organic Geochemistry Research Laboratory at the KS WSCLab Instrumentation used for target analyses at the OGRL at the KS WSC. Image is of part of the Instrument Laboratory.
View of Instrument Lab at the Organic Geochemistry Research Laboratory at the KS WSC
View of Instrument Lab at the Organic Geochemistry Research Laboratory at the KS WSCLab Instrumentation used for target analyses at the OGRL at the KS WSC. Image is of part of the Instrument Laboratory.
Release of radio-tagged silver phase American Eel
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.
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.
Eel electrosensitivity test apparatus
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.
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.
A Tallgrass Prairie Planting Being Seeded
A tractor using a grass-seed drill to plant a tallgrass prairie site in Minnesota.
A tractor using a grass-seed drill to plant a tallgrass prairie site in Minnesota.
Pollinator Flight
Bumble bee landing on a cone flower provided by USGS Ecosystems Mission Area.
Bumble bee landing on a cone flower provided by USGS Ecosystems Mission Area.
Grass carp larvae
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).
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).
USA-NPN Pheno Forecast of emerald ash borer adult emergence.
USA-NPN Pheno Forecast of emerald ash borer adult emergence.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.
USA-NPN Pheno Forecast of emerald ash borer adult emergence.
USA-NPN Pheno Forecast of emerald ash borer adult emergence.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.
Pair of pronghorn
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.
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.
Sagebrush ecosystem
USGS researchers are assessing the spread of invasive annual grasses in sagebrush and grassland ecosystems of Montana, North Dakota, and South Dakota.
USGS researchers are assessing the spread of invasive annual grasses in sagebrush and grassland ecosystems of Montana, North Dakota, and South Dakota.
Adult silver phase American Eel
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.
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.
Eel climbing substrate
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.
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.
Eel airlift bypass prototype
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.
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.
Ohia seedlings before planting
ʻŌhiʻa seedlings in dibble tubes, prior to planting.
ʻŌhiʻa seedlings in dibble tubes, prior to planting.
Scientists use grids to collect alpine plant data according to GLORIA
Scientists use grids to collect alpine plant data according to GLORIAScientists use grids to collect alpine plant data according to GLORIA protocols on the summit of Bison Mountain in Glacier National Park, Montana.
Scientists use grids to collect alpine plant data according to GLORIA
Scientists use grids to collect alpine plant data according to GLORIAScientists 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
Researchers evaluate vegetation during a GLORIA alpine plant surveyResearchers evaluate vegetation during a GLORIA alpine plant survey near the summit of Seward Mountain in Glacier National Park, Montana.
Researchers evaluate vegetation during a GLORIA alpine plant survey
Researchers evaluate vegetation during a GLORIA alpine plant surveyResearchers 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 Wisconsin
Sediment core sample taken at Grubers Grove Bay WisconsinSediment core sample taken at Grubers Grove Bay on the Wisconsin River, Wisconsin.
Sediment core sample taken at Grubers Grove Bay Wisconsin
Sediment core sample taken at Grubers Grove Bay WisconsinSediment core sample taken at Grubers Grove Bay on the Wisconsin River, Wisconsin.
Northern Pintail Drake at Colusa National Wildlife Refuge
Northern Pintail Drake at Colusa National Wildlife RefugeNorthern Pintail Drake at Colusa National Wildlife Refuge
Northern Pintail Drake at Colusa National Wildlife Refuge
Northern Pintail Drake at Colusa National Wildlife RefugeNorthern Pintail Drake at Colusa National Wildlife Refuge
Flock of northern pintail ducks at Yolo Bypass Wildlife Area
Flock of northern pintail ducks at Yolo Bypass Wildlife AreaFlock of northern pintail flying at Yolo Bypass Wildlife Area
Flock of northern pintail ducks at Yolo Bypass Wildlife Area
Flock of northern pintail ducks at Yolo Bypass Wildlife AreaFlock of northern pintail flying at Yolo Bypass Wildlife Area
Flock of northern pintail flying at Yolo Bypass Wildlife Area
Flock of northern pintail flying at Yolo Bypass Wildlife AreaFlock of northern pintail flying at Yolo Bypass Wildlife Area
Flock of northern pintail flying at Yolo Bypass Wildlife Area
Flock of northern pintail flying at Yolo Bypass Wildlife AreaFlock of northern pintail flying at Yolo Bypass Wildlife Area
Collaborating on Climate Adaptation
RAMPS expands drought adaptation project with national parks in the 4-Corners area. National parks across the desert Southwest are experiencing ecological impacts due to climate change.
RAMPS expands drought adaptation project with national parks in the 4-Corners area. National parks across the desert Southwest are experiencing ecological impacts due to climate change.