Images

Field camp in the Yukon-Kuskokwim Delta, western AK, where USGS and other ecologists monitor impacts of climate changes, erosion, sedimentation, and flooding on coastal ecosystems

An Alaska Native village on the Yukon-Kuskokwim Delta, western AK

Wind Cave is the first cave national park and currently, the 6th most extensive cave network in the world. It's most famous for its large concentration of a fairly rare cave formation known as boxwork. Boxwork is formed when dissolved calcium carbonate crystallized in cracks in surrounding rock.

Scenic view from Siuslaw National Forest, OR.

This is a photograph of the Las Conchas Fire, USGS - New Mexico Water Science Center

Salt marsh grass grows in the restored marsh at Bass Creek, Yarmouth, MA. 

Photograph showing San Pedro Riparian National Conservation Area, residential development southeast of Sierra Vista, Arizona, and the Huachuca Mountains from Hereford Road, Cochise County, Arizona. 

Toni Lyn Morelli; White Mountain National Forest, NH; trapping red squirrels

Snags provide habitat for a wide range of organisms from cavity-nesting birds to insects, and are critical for maintaining forest biodiversity. Resource managers can create snags by topping trees to mitigate loss of snags to timber harvest, but information regarding changes in habitat for snag-dependent wildlife over time as created snags decay is lacking.

Aerial photograph of Kwajalein Atoll showing its low-lying islands and coral reefs.

Aerial photograph of Kwajalein Atoll showing its low-lying islands and coral reefs.

Underwater image of a wave breaking over a coral reef on Kwajalein Atoll in the Republic of the Marshall Islands. This image shows how the high hydrodynamic roughness of live, healthy corals causes friction that induces breaking of waves over coral reefs, reducing wave energy at the shoreline that can cause flooding and island overwash.

Devils River - downstream view. Pecos River Watershed Salinity Study. April 14-16, 2015 field trip, Texas.

FWS staff leading a tour of the coastal marshes of Cape Romain NWR.  Project team members (clockwise starting at 1pm) included Fred Johnson, Nathan Wood, David Case, Julien Martin, Elda Varela Minder, and Jennifer Costanza. (credit – M. Eaton)  

Pecos River at Old Crane Road bridge, Texas, downstream view. Photograph by Christopher Braun, U.S. Geological Survey, February 2015.

SIR 2019-5071

Cape Romain Project team members (left to right) Jen Costanza, Mitch Eaton, Fred Johnson, Dave Case, Nate Wood and Julien Martin visit the refuge’s ‘boneyard beach’ to observe the impacts of SLR on former maritime forest. (credit - M. Eaton)

Bison herd grazing on a hill in Montana. Ryan Hagerty photo. FWS.

An amphitheater at the natural entrance of Carlsbad Caverns.

Amistad National Recreation Area includes the Amistad Reservoir, a man-made lake along the border of Texas and Mexico.

Marsh management projects on-going at Blackwater National Wildlife Refuge. Wetlands are planted and flooded during the Spring and Summer, then drained during the Fall and Winter. This provides sediment stabilization and habitat for migrating waterfowl.

Migratory waterfowl congregate at Coulson Pond in Blackwater National Wildlife Refuge. Blackwater serves as an important habitat for these waterfowl, and was established in 1933 as a waterfowl sanctuary for birds migrating along the Atlantic Flyway.