Red firs in the Sierra Nevada
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Snowy scene in a red fir forest
Red firs in the Sierra Nevada
Winter, Postfire Landscape in the Mojave Desert
Picture taken February, 2006, Beaver Dam mountains, UT. Postfire landscape taken after a summer 2005 fire in what was previously blackbrush scrub.
Picture taken February, 2006, Beaver Dam mountains, UT. Postfire landscape taken after a summer 2005 fire in what was previously blackbrush scrub.
Diverse Natural Habitat, Mojave National Preserve
This is what an unburned mid-elevation community in the Hackberry region of the Mojave National Preserve looks like. Note the dense cover and high diversity of shrubs. There are few if any invasive plants in the community.
This is what an unburned mid-elevation community in the Hackberry region of the Mojave National Preserve looks like. Note the dense cover and high diversity of shrubs. There are few if any invasive plants in the community.
Blackbrush and Transect, Mojave National Preserve
Dense cover of native blackbrush, with a low diversity of shrubs. There are few if any invasive plants in the community.
Dense cover of native blackbrush, with a low diversity of shrubs. There are few if any invasive plants in the community.
California Red-legged Frog
California red-legged frog (Rana draytonii) surfaces in a pond in Point Reyes National Seashore, CA.
California red-legged frog (Rana draytonii) surfaces in a pond in Point Reyes National Seashore, CA.
Herpetologist Dr. Gary Fellers
The late USGS herpetologist Dr. Gary Fellers
The late USGS herpetologist Dr. Gary Fellers
Southern California Neighborhood Scarred by Wildfire
Southern California neighborhood scarred by wildfire.
Southern California neighborhood scarred by wildfire.
This Fish Gets to Taste What is Tasting it
This cymothoid isopod (Nerocila californica) chews on the tongue of its mullet host (Mugil cephalus).
This cymothoid isopod (Nerocila californica) chews on the tongue of its mullet host (Mugil cephalus).
Western Spadefoot Toad
A western spadefoot toad (Spea hammondii) found near Badger Canyon, CA.
A western spadefoot toad (Spea hammondii) found near Badger Canyon, CA.
Cassin's Auklet
Cassin's auklet with a radio transmitter attached for a study in the Channel Islands.
Cassin's auklet with a radio transmitter attached for a study in the Channel Islands.
Sea Otter Capture and Tagging at Sunrise
USGS marine biologists set sail on a crisp September morning to capture and tag wild sea otters to monitor the health of this threatened species.
USGS marine biologists set sail on a crisp September morning to capture and tag wild sea otters to monitor the health of this threatened species.
Waterbirds
Small waterbirds resting atop a limestone outcropping in Chokoloskee Bay.
Small waterbirds resting atop a limestone outcropping in Chokoloskee Bay.
Agassiz's Desert Tortoise
A male Agassiz's desert tortoise, equipped with a transmitter, in a wind energy facility near Palm Springs, Calif.
A male Agassiz's desert tortoise, equipped with a transmitter, in a wind energy facility near Palm Springs, Calif.
Creosote scrub habitat
Creosote scrub habitat (one type of preferred desert tortoise habitat) in the Mojave Desert.
Creosote scrub habitat (one type of preferred desert tortoise habitat) in the Mojave Desert.
Yellow Legged Frog
USGS scientists found this adult mountain yellow-legged frog on June 10 in Tahquitz Creek, a rediscovered population
of the endangered frog in the San Jacinto Wilderness, San Bernardino National Forest, California.
USGS scientists found this adult mountain yellow-legged frog on June 10 in Tahquitz Creek, a rediscovered population
of the endangered frog in the San Jacinto Wilderness, San Bernardino National Forest, California.
Assessing Sites for Yellow Legged Frog
Assessing suitable sites in southern California
for reintroducing endangered southern mountain yellow-legged frogs, USGS scientists rediscovered a population in the San Jacinto Wilderness, 50 years since this frog was last seen there.
Assessing suitable sites in southern California
for reintroducing endangered southern mountain yellow-legged frogs, USGS scientists rediscovered a population in the San Jacinto Wilderness, 50 years since this frog was last seen there.
Western Fence Lizard
The Western fence lizard (Sceloporus occidentalis) is a relatively common and widespread lizard in Southern California. It is larger and prefers less open habitat than the related side-blotched lizard, yet USGS and National Park Service biologists are finding signs of genetic isolation in both species.
The Western fence lizard (Sceloporus occidentalis) is a relatively common and widespread lizard in Southern California. It is larger and prefers less open habitat than the related side-blotched lizard, yet USGS and National Park Service biologists are finding signs of genetic isolation in both species.
Wrentit Genetic Isolation Map
This map of the Thousand Oaks, Calif. area visualizes the degree of genetic isolation being experienced by the wrentit (Chamaea fasciata), a small songbird.
This map of the Thousand Oaks, Calif. area visualizes the degree of genetic isolation being experienced by the wrentit (Chamaea fasciata), a small songbird.
Southern Sea Otter
The health and population growth of the southern sea otter -- a federally listed threatened species -- can serve as an indicator of the health and condition of California's coastal waters.
The health and population growth of the southern sea otter -- a federally listed threatened species -- can serve as an indicator of the health and condition of California's coastal waters.
Sierra Nevada Yellow-Legged Frog
A Sierra Nevada yellow-legged frog (Rana sierrae) scans the landscape in Yosemite National Park.
A Sierra Nevada yellow-legged frog (Rana sierrae) scans the landscape in Yosemite National Park.
Giant Sea Star (Pisaster giganteus)
In contrast to pale, sick specimens, healthy sea stars are vibrantly colored, active predators, like this giant sea star (Pisaster giganteus) with a captured cowrie snail.
In contrast to pale, sick specimens, healthy sea stars are vibrantly colored, active predators, like this giant sea star (Pisaster giganteus) with a captured cowrie snail.