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Image: Dying pine infested with beetles
Dying pine infested with beetles
Dying pine infested with beetles
Dying pine infested with beetles

Mountain pine beetle-infested trees turn a striking red color throughout their crown as they're dying.

Mountain pine beetle-infested trees turn a striking red color throughout their crown as they're dying.

Image: Mountain pine beetles/larvae tunneling in bark
Mountain pine beetles/larvae tunneling in bark
Mountain pine beetles/larvae tunneling in bark
Mountain pine beetles/larvae tunneling in bark

Here, scientists point to a mountain pine beetle (top) and a pine beetle larva (bottom) that have been tunneling in the bark of a killed pine tree. The bluish streaks in the bark are from bluestain fungus.

Here, scientists point to a mountain pine beetle (top) and a pine beetle larva (bottom) that have been tunneling in the bark of a killed pine tree. The bluish streaks in the bark are from bluestain fungus.

Image: Forest ecology fieldwork
Forest ecology fieldwork
Forest ecology fieldwork
Forest ecology fieldwork

USGS scientist Jenny Briggs (foreground) researches beetle-killed pines at a USGS study site near Maxwell Ranch, Colorado, while Colorado State University entomologist Dan West examines the bark of a dead tree.

USGS scientist Jenny Briggs (foreground) researches beetle-killed pines at a USGS study site near Maxwell Ranch, Colorado, while Colorado State University entomologist Dan West examines the bark of a dead tree.

Image: Brewer's Sparrow Nest
Brewer's Sparrow Nest
Brewer's Sparrow Nest
Brewer's Sparrow Nest

Four blue Brewer's sparrow (Spizella breweri) eggs in nest, Steens Mountain, SE Oregon.

Four blue Brewer's sparrow (Spizella breweri) eggs in nest, Steens Mountain, SE Oregon.

Image: Beetle-killed and burned pine
Beetle-killed and burned pine
Beetle-killed and burned pine
Beetle-killed and burned pine

Globs of resin on the outside bark of a pine tree indicate that it has been attacked by mountain pine beetles. The trees ooze this resin as a defense mechanism against the beetles. This pine tree has also been burned, probably in a forest fire.

Globs of resin on the outside bark of a pine tree indicate that it has been attacked by mountain pine beetles. The trees ooze this resin as a defense mechanism against the beetles. This pine tree has also been burned, probably in a forest fire.

Image: A landscape of dead pines
A landscape of dead pines
A landscape of dead pines
A landscape of dead pines

USGS scientist Jenny Briggs walks through a study site near Blue Feather Lakes in Colorado. The reddish-brown trees dotting the landscape have been killed by mountain pine beetles.

USGS scientist Jenny Briggs walks through a study site near Blue Feather Lakes in Colorado. The reddish-brown trees dotting the landscape have been killed by mountain pine beetles.

Image: USGS forest ecologist at work
USGS forest ecologist at work
USGS forest ecologist at work
USGS forest ecologist at work

USGS scientist Jenny Briggs measures the trunk of a pine tree that has been killed by mountain pine beetles.

USGS scientist Jenny Briggs measures the trunk of a pine tree that has been killed by mountain pine beetles.

Image: Brewer's Sparrow Chicks
Brewer's Sparrow Chicks
Brewer's Sparrow Chicks
Brewer's Sparrow Chicks

Brewer's sparrow (Spizella breweri) chicks in nest, Steens Mountain, SE Oregon.

Image: Prairie Dog Town Fork of the Red River
Prairie Dog Town Fork of the Red River
Prairie Dog Town Fork of the Red River
Prairie Dog Town Fork of the Red River

Active channel and floodplain of the Prairie Dog Town Fork of the Red River.

Image: Block Island Seafloor
Block Island Seafloor
Block Island Seafloor
Block Island Seafloor

This photograph is of the seafloor off the Block Island coast and shows a rock crab and several shrimp on a boulder that is covered with bryozoans. Shell fragments and other coarse grained sediment can be seen in the background (upper left corner).

This photograph is of the seafloor off the Block Island coast and shows a rock crab and several shrimp on a boulder that is covered with bryozoans. Shell fragments and other coarse grained sediment can be seen in the background (upper left corner).

Image: Mw6.6 Lushan China Earthquake, April 20 2013
Mw6.6 Lushan China Earthquake, April 20 2013
Mw6.6 Lushan China Earthquake, April 20 2013
Mw6.6 Lushan China Earthquake, April 20 2013

Temporary dormitory for students in movable plank houses for the students.

 

Image: Mw6.6 Lushan China Earthquake, April 20 2013
Mw6.6 Lushan China Earthquake, April 20 2013
Mw6.6 Lushan China Earthquake, April 20 2013
Mw6.6 Lushan China Earthquake, April 20 2013

Total collapse of a reinforced building with masonry infill walls. Rubble has been disturbed by heavy equipment.

 

Image: Mw6.6 Lushan China Earthquake, April 20 2013
Mw6.6 Lushan China Earthquake, April 20 2013
Mw6.6 Lushan China Earthquake, April 20 2013
Mw6.6 Lushan China Earthquake, April 20 2013

Emergency shelter camp for thirty families erected at the site of a former village.

 

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