Images

Sandy Caribbean beach in the British Virgin Islands.

Cacti and dryland vegetation beside a Caribbean trail in the British Virgin Islands.

Cacti and dryland vegetation beside a Caribbean trail in the British Virgin Islands.

Cacti and dryland vegetation beside a Caribbean trail in the British Virgin Islands.

Caribbean trail at "The Baths," a coastal National Park in the British Virgin Islands.

Assorted cacti and dryland vegetation beside a Caribbean trail in the British Virgin Islands.

Cacti and dryland vegetation beside a Caribbean trail in the British Virgin Islands.

Yellow poinciana growing as a landscape ornamental in the British Virgin Islands. Species identification is tentative.

Golden early morning sunlight on a dry, rocky headland. Note the pelican, the cacti, and the xeric vegetation.

Contrastingly shadowed sand dune ripples at Great Sand Dunes National Park.

This picture, taken June 6, 2008 at Dahomey National Wildlife Refuge near Benoit, MS, shows a shallow pond in a former agricultural area planted with hardwood tree species typical of restoration areas in the Mississippi Delta region of northwestern Mississippi.

Three geese at a farm in East Texas. Two are displaying a defensive warning behavior, which was accompanied by a loud hissing sound.

Papaya tree (Carica papaya) with multiple unripened papayas growing in Virgin Islands National Park.

The narrow waters of Drake's Passage separate the U.S. Virgin Islands (foreground) from the British Virgin Islands in the distance.

The narrow waters of Drake's Passage separate the U.S. Virgin Islands (foreground) from the British Virgin Islands in the distance.

Graduate student, Megan Jones, changes the batteries on a remote sensor camera used to monitor predator movement in Conservation Reserve Program fields in southwest Wisconsin.

View of reattachment sandbar located near the Carbon Creek drainage on Colorado River (River Mile 65).  Photo is from the long-term sandbar monitoring remote camera time-series archives, and shows the sandbar two months after the 2008 Spring High Flow Event.

Sandbars in Grand Canyon are influenced by the amount of sand avaiable to build sandbars and the flow of the river, both of which are affected by Glen Canyon Dam.

Baldcypress trees line the Medina River, as well as other rivers in the Texas Hill Country.  Many trees get uprooted or broken off from periodic catastrophic floods.  Photo taken in Bandera Park. 

Scientists enter abandoned mine where bats hibernate in NY.

Scientists enter abandoned mine where bats hibernate in New York.