Left Image: Managed wetland at the Yolo Bypass Wildlife Preserve (California Central Valley) showing mixed flocks of foraging birds. Photographer: M. Marvin-DiPasquale.
Images
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Studies of contaminant biogeochemistry and microbial processes in wetland environments.
Left Image: Managed wetland at the Yolo Bypass Wildlife Preserve (California Central Valley) showing mixed flocks of foraging birds. Photographer: M. Marvin-DiPasquale.
Aerial view of the National Elk Refuge
Aerial view of the National Elk Refuge (left) and the town of Jackson, Wyoming (right) in 2007.
Aerial view of the National Elk Refuge (left) and the town of Jackson, Wyoming (right) in 2007.
Wind turbine on farm land next to a dilapidated barn
Wind turbine next to a dilapidated barn
Wind turbine next to a dilapidated barn
Rice Field Sediment Sampling
USGS researcher sampling sediment from flooded rice fields after 1 month of growth. The caged fish 'Hg bioaccumulation' experiment can be seen in the foreground.
USGS researcher sampling sediment from flooded rice fields after 1 month of growth. The caged fish 'Hg bioaccumulation' experiment can be seen in the foreground.
Unidentified Gray Snake
An unidentified gray snake among the grass edging a Maryland pond.
An unidentified gray snake among the grass edging a Maryland pond.
View of Managed Pond, Fields
A Tree plantation and Native Woods in Maryland. The trees between the pond and the field are trees along a running creek. The pond had mixed vegetation (native and nonnative) restored along its edge as a runoff buffer.
A Tree plantation and Native Woods in Maryland. The trees between the pond and the field are trees along a running creek. The pond had mixed vegetation (native and nonnative) restored along its edge as a runoff buffer.
Vegetation Buffer Around Maryland Pond
A strip of primarily native vegetation restored around a small private pond in Garrett County, Maryland, to act as a runoff buffer and to provide habitat for wildlife.
A strip of primarily native vegetation restored around a small private pond in Garrett County, Maryland, to act as a runoff buffer and to provide habitat for wildlife.
View of a Managed Pond
The trees between the pond and the field are trees along a running creek. The pond had mixed vegetation (native and nonnative) restored along its edge as a runoff buffer.
The trees between the pond and the field are trees along a running creek. The pond had mixed vegetation (native and nonnative) restored along its edge as a runoff buffer.
Vegetation Buffer Around Maryland Pond
A strip of primarily native vegetation restored around a small private pond in Garrett County, Maryland, to act as a runoff buffer and to provide habitat for wildlife.
A strip of primarily native vegetation restored around a small private pond in Garrett County, Maryland, to act as a runoff buffer and to provide habitat for wildlife.
Signs of Deer Resting in Ground Vegetation
White-tailed deer's resting place among ground vegetation. Prior to the photographer's approach, deer were seen in the immediate area.
White-tailed deer's resting place among ground vegetation. Prior to the photographer's approach, deer were seen in the immediate area.
Haleakala Silversword
Haleakala silversword, Argyroxyphium sandwicense subsp. macrocephalum, in bloom, with Haleakala Volcano crater in background.
Haleakala silversword, Argyroxyphium sandwicense subsp. macrocephalum, in bloom, with Haleakala Volcano crater in background.
African Penguin (Spheniscus demersus)
A colony of African penguins on coastal land, with nesting burrows. This species is considered vulnerable by the IUCN.
A colony of African penguins on coastal land, with nesting burrows. This species is considered vulnerable by the IUCN.
African Penguin (Spheniscus demersus)
African penguin fledglings and adults. This species is considered vulnerable by the IUCN.
African penguin fledglings and adults. This species is considered vulnerable by the IUCN.
Coconut palm (Cocos nucifera)
This photograph, taken from a seaside cliff, features two coconut palms.
This photograph, taken from a seaside cliff, features two coconut palms.
Moose (Alces alces)
Moose in urban environment.
Moose (Alces alces)
Moose in urban environment.
Screwpine (Pandanus sp.)
A branch of the Pandanus tree.
A branch of the Pandanus tree.
Cabbage on a Stick (Brighamia insignis)
An endangered Olulu plant, also known as Cabbage on a stick.
An endangered Olulu plant, also known as Cabbage on a stick.
Limahuli Garden of the National Tropical Botanical Gardens
The mountains that encompass Hawaii's Limahuli Garden and Preserve.
The mountains that encompass Hawaii's Limahuli Garden and Preserve.
Limahuli Garden of the National Tropical Botanical Gardens
The stream that flows down Kauai's Limahuli valley as it passes through the Limahuli Garden and Preserve.
The stream that flows down Kauai's Limahuli valley as it passes through the Limahuli Garden and Preserve.
Mango Tree (Mangifera indica)
A mango tree with two or three dozen ripening mangos.
A mango tree with two or three dozen ripening mangos.