A gall (tissue swelling) on an unidentified oak, tree species in Windsor Great Park.
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Gall on a Oak Tree
A gall (tissue swelling) on an unidentified oak, tree species in Windsor Great Park.
Patterns of Ducks Swimming in Icy Waters
The pattern left by several ducks swimming through light ice in Leiper Pond, Great Windsor Park, England. The ducks can be faintly seen in the background.
The pattern left by several ducks swimming through light ice in Leiper Pond, Great Windsor Park, England. The ducks can be faintly seen in the background.
Spider Web
A spider web in a forest. An unidentified spider is visible near the center of the web.
A spider web in a forest. An unidentified spider is visible near the center of the web.
Spider Web
A spider web in a forest. An unidentified spider is visible near the center of the web.
A spider web in a forest. An unidentified spider is visible near the center of the web.
Elk on a feedground in Wyoming.
Tree ring dating
Tamarisk stem cross-section cut 2.8 m below the ground surface showing how sediment deposition is dated using tree rings. Following initial burial of 68 cm in 1969, ring-width decreased, vessel size increased, and annual transitions became less distinct. After a second burial by 41 cm in 1972, annual transitions became indistinguishable.
Tamarisk stem cross-section cut 2.8 m below the ground surface showing how sediment deposition is dated using tree rings. Following initial burial of 68 cm in 1969, ring-width decreased, vessel size increased, and annual transitions became less distinct. After a second burial by 41 cm in 1972, annual transitions became indistinguishable.
Great Blue Heron (Ardea herodias)
A great blue heron standing in the marsh at Merritt Island National Wildlife Refuge near the Kennedy Space Center.
A great blue heron standing in the marsh at Merritt Island National Wildlife Refuge near the Kennedy Space Center.
Salt Marsh Estuary
Landscape view of a salt marsh in Florida's Merritt Island National Wildlife Refuge near the Cape Kennedy space center.
Landscape view of a salt marsh in Florida's Merritt Island National Wildlife Refuge near the Cape Kennedy space center.
Studies of contaminant biogeochemistry and microbial processes in surface sediments.
Studies of contaminant biogeochemistry and microbial processes in surface sediments.Left: USGS Employee Sherry Wren removing a square meter of surface sediment in pickleweed dominated marsh along the Petaluma River (California), for a study designed to investigate the role of marsh plant root zone on the cycling of mercury. Photographer: L. Windham-Myers. Date: 4/4/2006
Studies of contaminant biogeochemistry and microbial processes in surface sediments.
Studies of contaminant biogeochemistry and microbial processes in surface sediments.Left: USGS Employee Sherry Wren removing a square meter of surface sediment in pickleweed dominated marsh along the Petaluma River (California), for a study designed to investigate the role of marsh plant root zone on the cycling of mercury. Photographer: L. Windham-Myers. Date: 4/4/2006
White Ibises (Eudocimus albus) and Roseate Spoonbills (Platalea ajaja)
White Ibises (Eudocimus albus) and Roseate Spoonbills (Platalea ajaja)A group of ibises and roseate spoonbills feeding in the marsh and shallow waters.
White Ibises (Eudocimus albus) and Roseate Spoonbills (Platalea ajaja)
White Ibises (Eudocimus albus) and Roseate Spoonbills (Platalea ajaja)A group of ibises and roseate spoonbills feeding in the marsh and shallow waters.
Gall on an Oak Tree
A gall, a swelling of plant tissue, on the top part of a branch of what is believed to be a Post oak tree in East Texas.
A gall, a swelling of plant tissue, on the top part of a branch of what is believed to be a Post oak tree in East Texas.
Stingless bees on a bird of paradise flower
Stingless bees appear to chew holes in the base of a bird of paradise flower in a cultivated garden.
Stingless bees appear to chew holes in the base of a bird of paradise flower in a cultivated garden.
Stalagmite Texture
Close-up of a stalagmite surface in Luray Caverns, Virgina.
Close-up of a stalagmite surface in Luray Caverns, Virgina.
Stalactite in Luray Caverns
A stalactite as seen from directly underneath in Luray Caverns, Virginia.
A stalactite as seen from directly underneath in Luray Caverns, Virginia.
Fall Colors Along the Apalachicola River
View of trees in fall color and evening light along the Apachicola River at Torreya State Park.
View of trees in fall color and evening light along the Apachicola River at Torreya State Park.
Giant sequoia grove showing char marks
Giant sequoias on a slope, with several showing marks of fires the trees have survived.
Giant sequoias on a slope, with several showing marks of fires the trees have survived.
Three Bottle-Fed Baby Goats
Baby goats in Texas that were rejected by their various mothers, being fed bottled milk.
Baby goats in Texas that were rejected by their various mothers, being fed bottled milk.
Baling Hay
Loading hay from a field in East Texas.
Loading hay from a field in East Texas.
Baling Hay
Loading hay from a field in East Texas.
Loading hay from a field in East Texas.
Lake Whitefish
Lake Whitefish from our fall survey.
Lake Whitefish from our fall survey.
Sagebrush on fire in a controlled burn
Controlled burn at Hart Mountain National Wildlife Refuge, Oregon.
Controlled burn at Hart Mountain National Wildlife Refuge, Oregon.