Images

A Vermont Unit researcher outfits a captured bobcat with a lightweight GPS collar that will record its daily movements.The collar will provide information on bobcat home range size, habitat use, and movements.

A Vermont Unit researcher outfits a captured bobcat with a lightweight GPS collar that will record its daily movements.The collar will provide information on bobcat home range size, habitat use, and movements.

Drought and beetle-killed piñon pines in Walnut Canyon National Monument near Flagstaff, Arizona, amid a few surviving trees. Forest drought stress is strongly correlated with tree mortality from poor growth, bark beetle outbreaks, and high-severity fire.

Drought and beetle-killed piñon pines in Walnut Canyon National Monument near Flagstaff, Arizona, amid some surviving trees. Forest drought stress is highly correlated with mortality from poor growth, bark beetle outbreaks, and high-severity fire.

Hermit thrushes are a songbird species that was strongly affected by plant community changes in mountains because of reduced snowpack and cascading ecological effects, according to a USGS Montana Cooperative Wildlife Research Unit study.

Hadlock Brook, in Acadia National Park, is a small watershed that was monitored by the USGS from 1999 to 2006. The Hadlock Falls is a popular spot for a break on one of the many scenic trails through the park. The USGS gaging station was approximately 100 ft above the falls.

Homes along the edge of the coast in Isla Vista, California, Santa Barbara County, face a short lifespan because of eroding bluffs that support them.

Biosolids from a wastewater treatment plant were loaded onto trucks for transport to the field. A team of USGS scientists and their colleagues collected samples of biosolids for analysis from freshly exposed surfaces created by the machinery used to load the biosolids onto trucks.

Picture of a hydrographer's shadow as flood water is measured from a cablecar.

Colorful mountains of Sar-e-Pul hint of copper (green) and iron (red).

Ash collection from east Crater Glacier on Mount St. Helens with a dredge attached to a helicopter cable. Ash is analyzed to help scientists understand eruption characteristics.

Pinned butterfly specimens and a spider sold as souveniors in a market.

Pinned butterfly specimens and a spider sold as souveniors in a market.

Pinned butterfly specimens sold as souveniors in a market.

Pinned butterfly specimens and a spider sold as souveniors in a market.

Pinned butterfly specimens and a spider sold as souveniors in a market.

Pinned butterfly specimens sold as souveniors in a market.

Agassiz Glacier, GNP - 2005 black and white

George Durner collecting data on an anesthetized polar bear

Enchanted Rock is a granite formation from the Precambrian age

Fumaroles steaming within Sherman Crater, Mount Baker, Washington.