A Pacific chorus frog (Pseudacris regilla) in a meadow located in Point Reyes National Seashore.
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Pacific Chorus Frog
A Pacific chorus frog (Pseudacris regilla) in a meadow located in Point Reyes National Seashore.
Feeding Wildlife by the Shoreline
The Role of Environment and Wildlife in Human Health. Human - wildlife interactions threatened by emerging diseases including avian influenza.
The Role of Environment and Wildlife in Human Health. Human - wildlife interactions threatened by emerging diseases including avian influenza.
Defender
A red racer defends his home in the middle of the Mojave Desert.
A red racer defends his home in the middle of the Mojave Desert.
A Looking in View
observing the mass movement of salmon and steelhead through the dam.
observing the mass movement of salmon and steelhead through the dam.
A Time to Spawn
Salmon and steelhead migrating through Bonnerville Dam.
Salmon and steelhead migrating through Bonnerville Dam.
Clownfish
Clownfish and a living sea anemone survive in a coral reef that has been decimated by natural and human disasters.
Clownfish and a living sea anemone survive in a coral reef that has been decimated by natural and human disasters.
Sunset on the Gulf of Alaska
Sunset from the coastal Gulf of Alaska.
Sunset from the coastal Gulf of Alaska.
Curious Fellow
A immature elk is very interested in being photographed.
A immature elk is very interested in being photographed.
Elk at Play
Two immature Elk test and develop their abilities.
Two immature Elk test and develop their abilities.
Elwha River Restoration
A large cooperative project is taking place with Olympic National Park in the Elwha River in anticipation of removal of two dams. Restoration of the entire river to natural free flows will allow returning salmon access to historic spawning grounds.
A large cooperative project is taking place with Olympic National Park in the Elwha River in anticipation of removal of two dams. Restoration of the entire river to natural free flows will allow returning salmon access to historic spawning grounds.
Bison at Large
Older Bison who was very friendly and thought he was going to be fed.
Older Bison who was very friendly and thought he was going to be fed.
Laboratory approaches for quantifying microbial process rates and analyte concentrations
Left: Distillation rig used in the measurement of microbial sulfate reduction rates associated with a method based on the incubation of sediment samples with radioactively labeled sulfate. Photographer: M. Marvin-DiPasquale. Date: 3/5/2001.
Left: Distillation rig used in the measurement of microbial sulfate reduction rates associated with a method based on the incubation of sediment samples with radioactively labeled sulfate. Photographer: M. Marvin-DiPasquale. Date: 3/5/2001.
three neotropical birds
Three neotropical birds (Left to right: Magnolia warbler, Wilson's warbler, Canada warbler - all males) that were cought in mist net for banding
Three neotropical birds (Left to right: Magnolia warbler, Wilson's warbler, Canada warbler - all males) that were cought in mist net for banding
Corals and mangroves share clear waters
Sediment can smother corals, but Hurricane Hole has no sediment-bearing freshwater streams. Its clear waters are habitat for an entire community of marine life, including Montastrea corals and squirrelfish. Photo: Caroline Rogers, USGS, 2009
Sediment can smother corals, but Hurricane Hole has no sediment-bearing freshwater streams. Its clear waters are habitat for an entire community of marine life, including Montastrea corals and squirrelfish. Photo: Caroline Rogers, USGS, 2009
The last sheath-tailed bat photo
This photo of a Pacific sheath-tailed bat is the last good photo of this bat from Aguiguan in existence.
This photo of a Pacific sheath-tailed bat is the last good photo of this bat from Aguiguan in existence.
Mobile Tracking in The Dalles on the Columbia River
Tracking/monitoring movement of juvenile salmonids implanted with radio transmitters as they migrate down the Columbia River to the ocean.
Tracking/monitoring movement of juvenile salmonids implanted with radio transmitters as they migrate down the Columbia River to the ocean.
Columbia River Contaminants and Habitat Study
USGS scientists strategize near the Rooster Rock boat launch en route to Skamania Landing to collect fish for the Columbia River Contaminants and Habitat Study.
People pictured from the left: Glen Holmberg, Leticia Torres, Conrad Frost, Elena Nilsen.
USGS scientists strategize near the Rooster Rock boat launch en route to Skamania Landing to collect fish for the Columbia River Contaminants and Habitat Study.
People pictured from the left: Glen Holmberg, Leticia Torres, Conrad Frost, Elena Nilsen.
Late Fall on the Little Missouri River
Late fall in the North Dakota Badlands on the Little Missouri River near Medora.
Late fall in the North Dakota Badlands on the Little Missouri River near Medora.
Using Airboats For Marsh Studies
National Wetlands Research Center scientists use air boats for the marsh studies along the Gulf of Mexico.
National Wetlands Research Center scientists use air boats for the marsh studies along the Gulf of Mexico.
Beach on the Colorado River in Grand Canyon
Beaches in the rough terrain of Grand Canyon are a valued resource by hikers and river runners because they are fairly flat and vegetation free.
Beaches in the rough terrain of Grand Canyon are a valued resource by hikers and river runners because they are fairly flat and vegetation free.