Images

The orange and white cliffs, rock formations, and vegetation of Bryce Canyon National Park.

Hilly landscape dotted with buildings, farmland and a town.

Buildings and trees on a hill.

Distant view of hills and plains dotted with buildings.

View of urban landscape and farms from the top of a hill.

The orange and white cliffs, rock formations, and vegetation of Bryce Canyon National Park. Horses and riders can be seen on a winding trail.

Hills behind buildings, farmland and a town.

An ocean cave on the coast of Capri Island.

View of Fountain of the Four Rivers.

Countryside marked by farms, trees, and buildings.

The orange and white cliffs, rock formations, and vegetation of Bryce Canyon National Park.

Phragmites australis invading a Great Lakes coastal wetland. This tall wetland grass was introduced from Europe in the early 19th century and aggressively displaces native vegetation causing plant diversity to decline and critical habitat for fish and other wildlife to be altered.

South Fork of the Shenandoah River with trees and mountain in background.

Southern Virginia farm of Christmas trees of various types.

Libellula vibrans at rest on a blade of grass.

Typical early establishing species in a prairie reconstruction planted with a low-diversity seed mix. 

Juvenile Chinook salmon monitoring below the The Dalles Dam on the Columbia River.

Newly hatched Killdeer young and unhatched egg in nest bowl found on Lake Sakakawea, North Dakota

Image of Upland Sandpiper fledgling taken during Breeding Bird Surveys in Day County, South Dakota.

Photographer Tad Pfeffer capturing images of Columbia Glacier in Prince William Sound, Alaska. He is looking down-glacier towards the ice front, which faces open water in the fjord. This open water is extremely rare, and has not happened again since 2005. The fjord is typically covered with iceberg debris, called mélange.

Emerald Lake is at maximum depth levels in the summer, when snowmelt from surrounding peaks feeds the lake.