Newly hatched lake sturgeon free embryos. Sturgeon embryos hatch without well-developed eyes, mouth, or fins and rely on a large yolk sac to fuel rapid early development.
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Newly Hatched Lake Sturgeon Free Embryos
Newly hatched lake sturgeon free embryos. Sturgeon embryos hatch without well-developed eyes, mouth, or fins and rely on a large yolk sac to fuel rapid early development.
A water sample is prepped to be tested for environmental DNA
Laboratory technician Amelia Ulmer filters water collected in the field, to be analyzed for environmental DNA in the laboratory of Dr. Margaret Hunter. This sample was tested for Burmese python eDNA, in a process similar to that developed by Dr. Hunter for manatee eDNA.
Laboratory technician Amelia Ulmer filters water collected in the field, to be analyzed for environmental DNA in the laboratory of Dr. Margaret Hunter. This sample was tested for Burmese python eDNA, in a process similar to that developed by Dr. Hunter for manatee eDNA.
Aerial drone photograph showing the Chickasha wastewater treatment plant.
Image of the Chickasha wastewater treatment plant taken as part of a study to understand the runoff of contaminants in wastewater applied to an agricultural field.
Image of the Chickasha wastewater treatment plant taken as part of a study to understand the runoff of contaminants in wastewater applied to an agricultural field.
Experimental Stream Segment
One of six experimental stream segments used to study the dispersal of free embryo sturgeon at the Columbia Environmental Research Center. The stream segment is 5 meters long and 0.5 meters wide, and is filled with cobble-sized rock to a depth of 12 centimeters. Streams are covered during studies.
One of six experimental stream segments used to study the dispersal of free embryo sturgeon at the Columbia Environmental Research Center. The stream segment is 5 meters long and 0.5 meters wide, and is filled with cobble-sized rock to a depth of 12 centimeters. Streams are covered during studies.
Juvenile Broad-banded Watersnake with SFD
A juvenile Broad-banded Watersnake that tested positive for snake fungal disease (SFD) exhibiting ulceration of the skin on the head from St. Martin Parish, Louisiana. SFD has proven lethal in many snakes, and the disease is recognized as an emerging threat to wild snake populations.
A juvenile Broad-banded Watersnake that tested positive for snake fungal disease (SFD) exhibiting ulceration of the skin on the head from St. Martin Parish, Louisiana. SFD has proven lethal in many snakes, and the disease is recognized as an emerging threat to wild snake populations.
juvenile Broad-banded Watersnake that tested positive for snake fungal disease
A juvenile Broad-banded Watersnake that tested positive for snake fungal disease (SFD) exhibiting several crusty ventral scales from St. Martin Parish, Louisiana. SFD has proven lethal in many snakes, and the disease is recognized as an emerging threat to wild snake populations.
A juvenile Broad-banded Watersnake that tested positive for snake fungal disease (SFD) exhibiting several crusty ventral scales from St. Martin Parish, Louisiana. SFD has proven lethal in many snakes, and the disease is recognized as an emerging threat to wild snake populations.
juvenile Broad-banded Watersnake with snake fungal disease
A juvenile Broad-banded Watersnake that tested positive for snake fungal disease (SFD) exhibiting numerous nodules overlaid by roughened skin on the dorsal surface from St. Martin Parish, Louisiana. SFD has proven lethal in many snakes, and the disease is recognized as an emerging threat to wild snake populations.
A juvenile Broad-banded Watersnake that tested positive for snake fungal disease (SFD) exhibiting numerous nodules overlaid by roughened skin on the dorsal surface from St. Martin Parish, Louisiana. SFD has proven lethal in many snakes, and the disease is recognized as an emerging threat to wild snake populations.
Technician next to PCR machine
laboratory technician waiting for PCR analysis to be completed on an eDNA sample
laboratory technician waiting for PCR analysis to be completed on an eDNA sample
Mangrove forest, Rhizophora mangle tunnel, Florida
Mangrove forest, Rhizophora mangle tunnel, Charlotte Harbor Preserve State Park, Florida.
Mangrove forest, Rhizophora mangle tunnel, Charlotte Harbor Preserve State Park, Florida.
Adult American White Pelican on Chase Lake National Wildlife Refuge, North Dakota
Adult American White Pelican on Chase Lake National Wildlife Refuge, North Dakota
Adult American White Pelican on Chase Lake National Wildlife Refuge, North Dakota
USGS scientist holding a banded Piping Plover on Lake Sakakawea, North Dakota
USGS scientist holding an adult banded Piping Plover on Lake Sakakawea, North Dakota
USGS scientist holding an adult banded Piping Plover on Lake Sakakawea, North Dakota
pair of American Avocets
A pair of American avocets wading in a saline lake in the Great Basin. Many bird species rely on food resources found in saline lakes, such as brine shrimp and brine flies.
A pair of American avocets wading in a saline lake in the Great Basin. Many bird species rely on food resources found in saline lakes, such as brine shrimp and brine flies.
Black-footed Albatross with Chick
Black-footed albatross with chick, nesting black-footed albatrosses are especially vulnerable to sea-level rise and sudden flooding on low-lying islands.
Location: Midway Atoll National Wildlife Refuge
Black-footed albatross with chick, nesting black-footed albatrosses are especially vulnerable to sea-level rise and sudden flooding on low-lying islands.
Location: Midway Atoll National Wildlife Refuge
Capturing invasive American bullfrog tadpoles in the Yellowstone River floodplain.
Seining a heavily bullfrog populated side channel at Two Moon County Park in Billings, MT.
Seining a heavily bullfrog populated side channel at Two Moon County Park in Billings, MT.
A mangy wolf in Yellowstone National Park.
Capturing juvenile bull trout by electroshocking in Logging Creek.
Capturing juvenile bull trout by electroshocking Logging Creek and then transporting them in a backpack up the trail to Grace Lake.
Capturing juvenile bull trout by electroshocking Logging Creek and then transporting them in a backpack up the trail to Grace Lake.
Male Laysan duck (Anas laysanensis) at Midway Atoll
Male Laysan duck (Anas Laysanensis) at Midway Atoll, Hawai‘i
Male Laysan duck (Anas Laysanensis) at Midway Atoll, Hawai‘i
Chesapeake Bay Landsat mosaic 2014
Chesapeake Bay and surroundings, mosaic of 5 Landsat images taken in October and November 2014.
Chesapeake Bay and surroundings, mosaic of 5 Landsat images taken in October and November 2014.
Transporting a Captured Mule Deer
Researchers with the University of Wyoming and the Wyoming Game and Fish Department transport a captured a mule deer in the Wyoming Range of Wyoming. The deer was fitted with a GPS tracking and its body fat was assesssed and other biolgogical samples taken before release.
Researchers with the University of Wyoming and the Wyoming Game and Fish Department transport a captured a mule deer in the Wyoming Range of Wyoming. The deer was fitted with a GPS tracking and its body fat was assesssed and other biolgogical samples taken before release.
American Bullfrog
An American bullfrog along the Yellowstone River near Billings, MT.
An American bullfrog along the Yellowstone River near Billings, MT.
Surveying Bullfrogs
USGS biologists surveying for bullfrogs at Two Moon Park, Billings, MT.
USGS biologists surveying for bullfrogs at Two Moon Park, Billings, MT.