Images

Two ranging poles were placed near the positions of two sets of saguaros in order to determine their heights, and hence approximate ages. Most were established in the 1890s, after livestock grazing and the removal of fine fuels had begun in the area.

This photograph shows caribou tracks on ice-wedge polygons near Garry Creek in Alaska. Coastal erosion along the Arctic coast is chronic, widespread and potentially accelerating, posing threats to infrastructure important for defense and energy purposes, natural shoreline habitats and nearby Native communities.

This photograph shows ice-wedge polygons and an eroding shoreline at Cape Halkett on the Beaufort Sea coast of Alaska. Coastal erosion along the Arctic coast is chronic, widespread and potentially accelerating, posing threats to infrastructure important for defense and energy purposes, natural shoreline habitats and nearby Native communities.

This photograph shows ice-wedge polygons and an eroding shoreline at Cape Halkett on the Beaufort Sea coast of Alaska. Coastal erosion along the Arctic coast is chronic, widespread and potentially accelerating, posing threats to infrastructure important for defense and energy purposes, natural shoreline habitats and nearby Native communities.

This oblique aerial photograph is of Flaxman Island off the Alaska coast and shows a tapped thermokarst lakes, caribou tracks and ice-rich bluffs that are eroding.

A polar bear stands on a low-lying barrier shoal near the Huluhula River on the Beaufort Sea coast of Alaska. Coastal erosion along the Arctic coast is chronic, widespread and potentially accelerating, posing threats to infrastructure important for defense and energy purposes, natural shoreline habitats and nearby Native communities.

This oblique aerial photograph from 2006 shows the Barter Island long-range radar station landfill threatened by coastal erosion. The landfill was subsequently relocated further inland, however, the coastal bluffs continue to retreat.

Bluet at rest on a grass stalk near east side of Foy Lake, 3 miles southwest of Kalispell, MT.

A Pacific chorus frog (Pseudacris regilla) in a meadow located in Lassen Volcanic National Park.

Young mountain big sagebrush shown in the foreground are re-establishing in a native bunchgrass community 15 years after a fire along the Boise Front Mountains looking unto the Snake River Plain, Idaho.

Great Blue Heron standing in the water.

Dinosaur tracks in the Jurassic Moenave Formation. It is a popular site for tourists to stop and meet local Navajo and Moenkopi Hopi guides who lead short tours through the tracks area.

View northward from Mount St. Helens' crater rim, July 2006.

Brewer's sparrow (Spizella breweri) and sagebush sparrow (Artemisiospiza nevadensis) breeding habitat in central Nevada.

A tundra shrew (Sorex tundrensis) from Far East Siberia.

A cow in a pasture taken in the Central Oklahoma/Texas Plains Ecoregion (TX) in August July 2006.

A phosphate mine tailing pile taken in the Southern Coastal Plain Ecoregion (FL) in July 2006.

Male Eastern tiger swallowtail butterfly drinks nectar from a flower.

Male Eastern tiger swallowtail butterfly drinks nectar from a flower.

Male Eastern tiger swallowtail butterfly resting on a leaf.

Yukon Delta National Wildlife Refuge, Alaska.