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To understand how changes in rainfall and temperature might affect coastal wetlands in the northern Gulf of Mexico, USGS researchers conducted field studies at 10 estuaries in five states (Texas, Louisiana, Mississippi, Alabama, and Florida). The fieldwork took place in a variety of coastal wetland types, including mangroves, marshes, and salt flats.
To understand how changes in rainfall and temperature might affect coastal wetlands in the northern Gulf of Mexico, USGS researchers conducted field studies at 10 estuaries in five states (Texas, Louisiana, Mississippi, Alabama, and Florida). The fieldwork took place in a variety of coastal wetland types, including mangroves, marshes, and salt flats.
Series of daily sample bottles containing integrated water samples from the Elwha River, October 17, 2012 to November 9, 2012. Graphical overlay is the measured suspended sediment concentration in each sample bottle, showing the variability in sediment concentration during the time period shown.
Series of daily sample bottles containing integrated water samples from the Elwha River, October 17, 2012 to November 9, 2012. Graphical overlay is the measured suspended sediment concentration in each sample bottle, showing the variability in sediment concentration during the time period shown.
A mated pair of Common Eider swim across a lake in northern Alaska.
Photography by Jeff Wasley.
A mated pair of Common Eider swim across a lake in northern Alaska.
Photography by Jeff Wasley.
Series of daily sample bottles containing integrated water samples from the Elwha River, October 17, 2012 to November 9, 2012.
Series of daily sample bottles containing integrated water samples from the Elwha River, October 17, 2012 to November 9, 2012.
This project is designed to assess the feasibility of "rescuing" specific genetic lineages of bull trout from likely extirpation in three imperiled major lake drainages in GNP, through translocation of drainage-specific stocks into lakes located above barrier falls within parental drainages.
This project is designed to assess the feasibility of "rescuing" specific genetic lineages of bull trout from likely extirpation in three imperiled major lake drainages in GNP, through translocation of drainage-specific stocks into lakes located above barrier falls within parental drainages.
Aerial photograph of the mouth of the Elwha River where it meets the Strait of Juan de Fuca during the removal of the Elwha and Glines Canyon dams, Washington State, USA. Aerial assistance by LightHawk and plane piloted by Dr. Hunter Handsfield.
Aerial photograph of the mouth of the Elwha River where it meets the Strait of Juan de Fuca during the removal of the Elwha and Glines Canyon dams, Washington State, USA. Aerial assistance by LightHawk and plane piloted by Dr. Hunter Handsfield.
Aerial photograph of the former Lake Aldwell reservoir and the Elwha River 16 months following the removal of the Elwha Dam, Washington State, USA. Aerial assistance by LightHawk and plane piloted by Dr. Hunter Handsfield.
Aerial photograph of the former Lake Aldwell reservoir and the Elwha River 16 months following the removal of the Elwha Dam, Washington State, USA. Aerial assistance by LightHawk and plane piloted by Dr. Hunter Handsfield.
Aerial photograph of the former Lake Aldwell reservoir and the Elwha River 16 months following the removal of the Elwha Dam, Washington State, USA. Aerial assistance by LightHawk and plane piloted by Dr. Hunter Handsfield.
Aerial photograph of the former Lake Aldwell reservoir and the Elwha River 16 months following the removal of the Elwha Dam, Washington State, USA. Aerial assistance by LightHawk and plane piloted by Dr. Hunter Handsfield.
Aerial photograph showing the mouth of the Elwha River, Washington State, USA. Aerial assistance by LightHawk and plane piloted by Dr. Hunter Handsfield.
Aerial photograph showing the mouth of the Elwha River, Washington State, USA. Aerial assistance by LightHawk and plane piloted by Dr. Hunter Handsfield.
Researchers monitoring sandbars on the Colorado River, in Grand Canyon National Park. USGS photo, public domain.
Researchers monitoring sandbars on the Colorado River, in Grand Canyon National Park. USGS photo, public domain.
Lindsay VanSomeren (graduate student at University of Alaska Fairbanks) collects forage samples in the foothills of the Brooks Range off the Dalton Highway, North Slope of Alaska.
Lindsay VanSomeren (graduate student at University of Alaska Fairbanks) collects forage samples in the foothills of the Brooks Range off the Dalton Highway, North Slope of Alaska.
Walruses are very social animals and like to be in constant contact with other walruses. Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-3
Walruses are very social animals and like to be in constant contact with other walruses. Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-3
The coastal walrus haulouts that form during periods of sea ice scarcity in the Chukchi Sea are composed primarily of adult female walruses and young, as well as some adult male walruses.
(Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-3)
The coastal walrus haulouts that form during periods of sea ice scarcity in the Chukchi Sea are composed primarily of adult female walruses and young, as well as some adult male walruses.
(Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-3)
A close up of a female walrus resting after entering the haulout. Sand from the beach is evident on her tusks.
(Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-3)
A close up of a female walrus resting after entering the haulout. Sand from the beach is evident on her tusks.
(Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-3)
A transmitter tag (left) is being deployed by a USGS Wildlife Biologist (far right).
A transmitter tag (left) is being deployed by a USGS Wildlife Biologist (far right).
Thousands of walruses gathered to rest on the shore near the Alaskan coastal community of Point Lay during September of 2013 after sea ice disappeared from their offshore foraging grounds in the eastern Chukchi Sea.
(Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-3)
Thousands of walruses gathered to rest on the shore near the Alaskan coastal community of Point Lay during September of 2013 after sea ice disappeared from their offshore foraging grounds in the eastern Chukchi Sea.
(Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-3)
Thousands of walruses gathered to rest on the shore near the Alaskan coastal community of Point Lay during September of 2013 after sea ice disappeared from their offshore foraging grounds in the eastern Chukchi Sea.
Thousands of walruses gathered to rest on the shore near the Alaskan coastal community of Point Lay during September of 2013 after sea ice disappeared from their offshore foraging grounds in the eastern Chukchi Sea.
Thousands of walruses gathered to rest on the shore near the Alaskan coastal community of Point Lay during September of 2013 after sea ice disappeared from their offshore foraging grounds in the eastern Chukchi Sea.
(Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-3)
Thousands of walruses gathered to rest on the shore near the Alaskan coastal community of Point Lay during September of 2013 after sea ice disappeared from their offshore foraging grounds in the eastern Chukchi Sea.
(Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-3)
Wildlife Biologist Tyrone Donnelly searches the shoreline from a skiff in Izembek Lagoon while conducting avian influenza surveillance. Pacific black brant, seen flocking in the background, stage within the refuge each fall to take advantage of the abundance of eel grass as forage.
Wildlife Biologist Tyrone Donnelly searches the shoreline from a skiff in Izembek Lagoon while conducting avian influenza surveillance. Pacific black brant, seen flocking in the background, stage within the refuge each fall to take advantage of the abundance of eel grass as forage.
Blueberry plant with berries in fall colors.
Blueberry plant with berries in fall colors.
