Skip to main content
U.S. flag

An official website of the United States government

Christian E Zimmerman, Ph.D.

Actionable science to inform decision makers, managers, and the public

Professional Experience

  • 2017 - Present   Center Director, USGS Alaska Science Center, Anchorage, Alaska 

  • 2015 - 2017        Chief, Water and Interdisciplinary Studies Office, USGS, Alaska Science Center, Anchorage, Alaska

  • 2002 - Present  Chair Scientific and Technical Committee, Arctic-Yukon-Kuskokwim Sustainable Salmon Initiative, Anchorage, Alaska

  • 2001-2015          Research Fish Biologist, Alaska Science Center, Anchorage, AK

  • 2000 - 2001       Scientist, University of Washington, Seattle, Washington

  • 1995 - 1997       Fishery Biologist, U.S. Forest Service Pacific Northwest Research Station, Corvallis, Oregon

  • 1993 - 1995       Graduate Research Assistant, Oregon State University, Corvallis, Oregon

  • 1992                    Fishery Biologist, Thomas R. Payne and Associates/Pacific Land and Water Resources Consultants, Arcata, California

  • 1991                     Teaching Assistant, Humboldt State University, Arcata, California

  • 1990 - 1991        Research Assistant, Institute of Limnology, Uppsala University, Uppsala, Sweden

  • 1989 - 1990       Biological Technician, Redwood National Park, Arcata, California

Education and Certifications

  • Ph.D.  2000      Oregon State University, Corvallis, OR    Fishery Science

  • M.S.    1996      Oregon State University, Corvallis, OR    Fishery Science

  • B.S.     1992      Humboldt State University, Arcata, CA    Fishery Biology

Science and Products

Filter Total Items: 18
Orange colored water flowing into Kugororuk River, Alaska. Brown ground with vegetation, snow patches with mountains sky.

The Rusting of Arctic Rivers: Freshwater Ecosystems Respond to Rapidly Uptaking Metals

The water quality of streams and rivers in the Arctic is sensitive to rapid climate change and altered disturbance regimes.
By
Ecosystems Mission Area, Water Resources Mission Area, Alaska Science Center
The Rusting of Arctic Rivers: Freshwater Ecosystems Respond to Rapidly Uptaking Metals

The Rusting of Arctic Rivers: Freshwater Ecosystems Respond to Rapidly Uptaking Metals

The water quality of streams and rivers in the Arctic is sensitive to rapid climate change and altered disturbance regimes.
Learn More
Scientist walking up the Akilik River with a minnow trap to catch fish

Hydro-Ecology of Arctic Thawing (HEAT): Ecology

Permafrost thaw is leading to a myriad of changes in physical and chemical conditions throughout the Arctic.
By
Ecosystems Mission Area, Land Management Research Program, Species Management Research Program, Alaska Science Center
Hydro-Ecology of Arctic Thawing (HEAT): Ecology

Hydro-Ecology of Arctic Thawing (HEAT): Ecology

Permafrost thaw is leading to a myriad of changes in physical and chemical conditions throughout the Arctic.
Learn More
Two scientists examine a rocky shoreline covered in yellow algae and seaweed.

Q&A: USGS Ecosystems Provides Objective Science to Manage Lands, Fish, and Wildlife

The USGS Ecosystems Mission Area is the only program within the Department of Interior (DOI) focused on generating science to inform the management of the nation’s lands, fish, and wildlife. The Ecosystems Mission Area is also the only entity with the specific role of meeting the information needs of DOI agencies (e.g., Bureau of Land Management, Bureau of Ocean Energy Management, National Park...
By
Alaska Science Center
Q&A: USGS Ecosystems Provides Objective Science to Manage Lands, Fish, and Wildlife

Q&A: USGS Ecosystems Provides Objective Science to Manage Lands, Fish, and Wildlife

The USGS Ecosystems Mission Area is the only program within the Department of Interior (DOI) focused on generating science to inform the management of the nation’s lands, fish, and wildlife. The Ecosystems Mission Area is also the only entity with the specific role of meeting the information needs of DOI agencies (e.g., Bureau of Land Management, Bureau of Ocean Energy Management, National Park...
Learn More
Map of Alaska with multiple colors throughout the state representative areas of different geology.

Q&A: The Role of USGS Ecosystems Science in Alaska

The USGS is the science arm of the Department of the Interior (DOI) with a mission to provide timely and impartial science information to decision-makers, industry, and others. Topics of USGS research and monitoring in Alaska include Ecosystems, Energy and Minerals, Geology, Water Resources, and Natural Hazards. At the Ecosystems Office of the USGS Alaska Science Center, research and monitoring...
By
Alaska Science Center
Q&A: The Role of USGS Ecosystems Science in Alaska

Q&A: The Role of USGS Ecosystems Science in Alaska

The USGS is the science arm of the Department of the Interior (DOI) with a mission to provide timely and impartial science information to decision-makers, industry, and others. Topics of USGS research and monitoring in Alaska include Ecosystems, Energy and Minerals, Geology, Water Resources, and Natural Hazards. At the Ecosystems Office of the USGS Alaska Science Center, research and monitoring...
Learn More
Sockeye salmon spawning in Grand Central River on the Seward Peninsula, Alaska

Q&A: USGS Ecosystems Science Provides Information on Subsistence and Hunter-Harvested Food Resources in Alaska

The USGS is the science arm of the Department of the Interior with a mission to provide timely and impartial science information to decision-makers, industry, tribal entities and others. In Alaska, subsistence and hunter-harvested foods are kitchen table issues for the public. The annual subsistence harvest per rural resident is 295 pounds of wild food. USGS science is responsive to subsistence...
By
Alaska Science Center
Q&A: USGS Ecosystems Science Provides Information on Subsistence and Hunter-Harvested Food Resources in Alaska

Q&A: USGS Ecosystems Science Provides Information on Subsistence and Hunter-Harvested Food Resources in Alaska

The USGS is the science arm of the Department of the Interior with a mission to provide timely and impartial science information to decision-makers, industry, tribal entities and others. In Alaska, subsistence and hunter-harvested foods are kitchen table issues for the public. The annual subsistence harvest per rural resident is 295 pounds of wild food. USGS science is responsive to subsistence...
Learn More
Biologist transferring a muscle biopsy from the sampler to the vial

Assessing heat stress in migrating Yukon River Chinook Salmon

We will examine evidence of heat stress in Yukon River Chinook salmon ( Oncorhynchus tshawytscha) using heat shock proteins and gene expression.
By
Species Management Research Program, Alaska Science Center, Western Ecological Research Center (WERC)
Assessing heat stress in migrating Yukon River Chinook Salmon

Assessing heat stress in migrating Yukon River Chinook Salmon

We will examine evidence of heat stress in Yukon River Chinook salmon ( Oncorhynchus tshawytscha) using heat shock proteins and gene expression.
Learn More
Sampling a stream in the mist in the Akilik River drainage

Natural Resources Preservation Program

This is a nation-wide collaborative program, supported by the USGS Ecosystems Mission Area, through which USGS and National Park Service staff address priority research needs identified by the National Park Service. On this page, we highlight research taking place in Alaska as part of this program.
By
Alaska Science Center
Natural Resources Preservation Program

Natural Resources Preservation Program

This is a nation-wide collaborative program, supported by the USGS Ecosystems Mission Area, through which USGS and National Park Service staff address priority research needs identified by the National Park Service. On this page, we highlight research taking place in Alaska as part of this program.
Learn More
USGS Alaska Science Center sign

Exploring Alaska Through Our Science

The USGS conducts scientific research for the Department of the Interior (DOI). The Alaska Science Center (ASC) provides objective and timely data, information, and research findings to Federal, State, and local resource managers and the public but has no regulatory authority. Our science helps support sound decisions regarding natural resources, natural hazards, and ecosystems in Alaska and...
By
Alaska Science Center
Exploring Alaska Through Our Science

Exploring Alaska Through Our Science

The USGS conducts scientific research for the Department of the Interior (DOI). The Alaska Science Center (ASC) provides objective and timely data, information, and research findings to Federal, State, and local resource managers and the public but has no regulatory authority. Our science helps support sound decisions regarding natural resources, natural hazards, and ecosystems in Alaska and...
Learn More
A Red-throated Loon swimming in a small lake

Outer Continental Shelf Program

This is a nation-wide collaborative program, supported by the USGS Ecosystems Mission Area, through which USGS and Bureau of Ocean Energy Management staff address priority research needs identified by the Bureau of Ocean Energy Management. On this page, we highlight research taking place in Alaska as part of this program.
By
Alaska Science Center
Outer Continental Shelf Program

Outer Continental Shelf Program

This is a nation-wide collaborative program, supported by the USGS Ecosystems Mission Area, through which USGS and Bureau of Ocean Energy Management staff address priority research needs identified by the Bureau of Ocean Energy Management. On this page, we highlight research taking place in Alaska as part of this program.
Learn More
USGS gage 15955000 Canning River above Staines River near Deadhorse, AK. Derek Frohbelter loading helicopter for return to Kavik

Science Support Program and Quick Response Program

This is a nation-wide collaborative program, supported by the USGS Ecosystems Mission Area, through which USGS and U.S. Fish and Wildlife Service staff address priority research needs identified by the U.S. Fish and Wildlife Service. On this page, we highlight research taking place in Alaska as part of this program.
By
Alaska Science Center
Science Support Program and Quick Response Program

Science Support Program and Quick Response Program

This is a nation-wide collaborative program, supported by the USGS Ecosystems Mission Area, through which USGS and U.S. Fish and Wildlife Service staff address priority research needs identified by the U.S. Fish and Wildlife Service. On this page, we highlight research taking place in Alaska as part of this program.
Learn More
Andrew Reeves retrieving samples at Izembek National Wildlife Refuge, Alaska

Collaborative Science for Priority Information Needs

One of the primary missions of the USGS is to address the science needs of Department of Interior bureaus, particularly those that manage natural resources and lands. This mission is fulfilled through the research and other activities of USGS scientists but also specifically through three USGS nationally-funded programs listed below.
By
Alaska Science Center
Collaborative Science for Priority Information Needs

Collaborative Science for Priority Information Needs

One of the primary missions of the USGS is to address the science needs of Department of Interior bureaus, particularly those that manage natural resources and lands. This mission is fulfilled through the research and other activities of USGS scientists but also specifically through three USGS nationally-funded programs listed below.
Learn More
The north fork of the Agashashok River

Hydro-Ecology of Arctic Thawing (HEAT): Hydrology

The Arctic is warming at higher rates than much of the rest of the world. For Alaska, this results in changes in hydrology and ecosystems – permafrost is thawing, changing landscapes and releasing nutrients to soils and streams.
By
Land Management Research Program, Alaska Science Center
Hydro-Ecology of Arctic Thawing (HEAT): Hydrology

Hydro-Ecology of Arctic Thawing (HEAT): Hydrology

The Arctic is warming at higher rates than much of the rest of the world. For Alaska, this results in changes in hydrology and ecosystems – permafrost is thawing, changing landscapes and releasing nutrients to soils and streams.
Learn More

Arctic Cisco Stable Isotope Data, Prudhoe Bay, August 2009 Arctic Cisco Stable Isotope Data, Prudhoe Bay, August 2009

This data set documents the carbon and nitrogen stable isotope ratios of age-0 Arctic cisco (Coregonus autumnalis) captured in Prudhoe Bay, Alaska in August 2009.
By
Alaska Science Center

Arctic Cisco Stomach Content Data, Prudhoe Bay, August 2009 Arctic Cisco Stomach Content Data, Prudhoe Bay, August 2009

This data set documents the stomach contents of age-0 Arctic cisco (Coregonus autumnalis) captured in Prudhoe Bay, Alaska in August 2009.
By
Alaska Science Center

Count of Sockeye Salmon (Oncorhynchus nerka), River Temperature, and River Height in the Pilgrim River, Nome, Alaska, 2003-2014 Count of Sockeye Salmon (Oncorhynchus nerka), River Temperature, and River Height in the Pilgrim River, Nome, Alaska, 2003-2014

The dataset is the daily count of Sockeye Salmon (Oncorhynchus nerka) passing through a fish counting weir on the Pilgrim River from 2003 to 2014. Also, included in the data set is the daily temperature and river height measured at the weir (65.103071°, -164.824046°).The fish weir was operated during the summer (late June to mid-September) by the Norton Sound Economic Development...
By
Alaska Science Center
Filter Total Items: 65
Barry Arm of Harriman Fjord, Prince William Sound, Alaska
Barry Arm of Harriman Fjord, Prince William Sound, Alaska
Barry Arm of Harriman Fjord, Prince William Sound, Alaska
Barry Arm of Harriman Fjord, Prince William Sound, Alaska

Barry Arm of Harriman Fjord, Prince William Sound, Alaska

Barry Arm of Harriman Fjord, Prince William Sound, Alaska

Barry Arm of Harriman Fjord, Prince William Sound, Alaska. Included is Barry Glacier and Cascade Glacier.

By
Natural Hazards Mission Area, Landslide Hazards Program, Alaska Science Center
Barry Arm of Harriman Fjord, Prince William Sound, Alaska

Barry Arm of Harriman Fjord, Prince William Sound, Alaska

Barry Arm of Harriman Fjord, Prince William Sound, Alaska

Barry Arm of Harriman Fjord, Prince William Sound, Alaska. Included is Barry Glacier and Cascade Glacier.

By
Natural Hazards Mission Area, Landslide Hazards Program, Alaska Science Center
Fyke net contents from a lake near Atqasuk, Alaska mainly sticklebacks
Fyke net contents from a lake near Atqasuk, Alaska
Fyke net contents from a lake near Atqasuk, Alaska
Fyke net contents from a lake near Atqasuk, Alaska mainly sticklebacks

Fyke net contents from a lake near Atqasuk, Alaska

Fyke net contents from a lake near Atqasuk, Alaska

Contents of the fyke net that was set in the lake near Atqasuk in 2016.  All sticklebacks.

By
Alaska Science Center
Fyke net contents from a lake near Atqasuk, Alaska mainly sticklebacks

Fyke net contents from a lake near Atqasuk, Alaska

Fyke net contents from a lake near Atqasuk, Alaska

Contents of the fyke net that was set in the lake near Atqasuk in 2016.  All sticklebacks.

By
Alaska Science Center
Two scientists in a boat sampling the water of Pilgrim River
Water quality measurements on the Pilgrim River
Water quality measurements on the Pilgrim River
Two scientists in a boat sampling the water of Pilgrim River

Water quality measurements on the Pilgrim River

Water quality measurements on the Pilgrim River

Collecting water quality data on the Pilgrim River. Types of measurements taken were on water temperature, dissolved oxygen, pH, and conductivity.

By
Alaska Science Center
Two scientists in a boat sampling the water of Pilgrim River

Water quality measurements on the Pilgrim River

Water quality measurements on the Pilgrim River

Collecting water quality data on the Pilgrim River. Types of measurements taken were on water temperature, dissolved oxygen, pH, and conductivity.

By
Alaska Science Center
Setting nets on Whitefish Lake on Lake Clark Nat'l Park and Preserve
Setting nets on Whitefish Lake on Lake Clark Nat'l Park and Preserve
Setting nets on Whitefish Lake on Lake Clark Nat'l Park and Preserve
Setting nets on Whitefish Lake on Lake Clark Nat'l Park and Preserve

Setting nets on Whitefish Lake on Lake Clark Nat'l Park and Preserve

Setting nets on Whitefish Lake on Lake Clark Nat'l Park and Preserve

Randy Brown and Dan Young are setting nets to catch whitefish on Whitefish Lake in the Lake Clark National Park and Preserve.

By
Alaska Science Center
Setting nets on Whitefish Lake on Lake Clark Nat'l Park and Preserve

Setting nets on Whitefish Lake on Lake Clark Nat'l Park and Preserve

Setting nets on Whitefish Lake on Lake Clark Nat'l Park and Preserve

Randy Brown and Dan Young are setting nets to catch whitefish on Whitefish Lake in the Lake Clark National Park and Preserve.

By
Alaska Science Center
Lake Clark outlet
Lake Clark outlet
Lake Clark outlet
Lake Clark outlet

Lake Clark outlet

Lake Clark outlet

Lake Clark outlet

By
Alaska Science Center
Lake Clark outlet

Lake Clark outlet

Lake Clark outlet

Lake Clark outlet

By
Alaska Science Center
Image: Kijik Lake
Kijik Lake
Kijik Lake
Image: Kijik Lake

Kijik Lake

Kijik Lake

Kijik Lake in Lake Clark National Park and Preserve, Alaska. USGS researchers study salmon ecology in cooperation with NPS.

By
Alaska Science Center, Communications and Publishing
Image: Kijik Lake

Kijik Lake

Kijik Lake

Kijik Lake in Lake Clark National Park and Preserve, Alaska. USGS researchers study salmon ecology in cooperation with NPS.

By
Alaska Science Center, Communications and Publishing
Reflections of Tanalian Mountain and Hardenburg Bay in Lake Clark, Alaska
Tanalian Mountain and Hardenburg Bay in Lake Clark, Alaska
Tanalian Mountain and Hardenburg Bay in Lake Clark, Alaska
Reflections of Tanalian Mountain and Hardenburg Bay in Lake Clark, Alaska

Tanalian Mountain and Hardenburg Bay in Lake Clark, Alaska

Tanalian Mountain and Hardenburg Bay in Lake Clark, Alaska

Reflections of Tanalian Mountain and Hardenburg Bay in Lake Clark, Alaska. Near Port Alsworth.

By
Alaska Science Center
Reflections of Tanalian Mountain and Hardenburg Bay in Lake Clark, Alaska

Tanalian Mountain and Hardenburg Bay in Lake Clark, Alaska

Tanalian Mountain and Hardenburg Bay in Lake Clark, Alaska

Reflections of Tanalian Mountain and Hardenburg Bay in Lake Clark, Alaska. Near Port Alsworth.

By
Alaska Science Center
Two biologists sorting through invertebrates they collected from a nearby lake on the north slope of Alaska
Sorting through invertebrates from a north slope lake of Alaska
Sorting through invertebrates from a north slope lake of Alaska
Two biologists sorting through invertebrates they collected from a nearby lake on the north slope of Alaska

Sorting through invertebrates from a north slope lake of Alaska

Sorting through invertebrates from a north slope lake of Alaska

As part of the Changing Arctic Ecosystem project, two biologists sampling invertebrates near the Chipp River area.

By
Alaska Science Center
Two biologists sorting through invertebrates they collected from a nearby lake on the north slope of Alaska

Sorting through invertebrates from a north slope lake of Alaska

Sorting through invertebrates from a north slope lake of Alaska

As part of the Changing Arctic Ecosystem project, two biologists sampling invertebrates near the Chipp River area.

By
Alaska Science Center
Ice wedge polygons on the north slope of Alaska
Ice wedge polygons on the north slope of Alaska
Ice wedge polygons on the north slope of Alaska
Ice wedge polygons on the north slope of Alaska

Ice wedge polygons on the north slope of Alaska

Ice wedge polygons on the north slope of Alaska

Ice wedge polygons near the Chipp River area on the north slope of Alaska

By
Alaska Science Center
Ice wedge polygons on the north slope of Alaska

Ice wedge polygons on the north slope of Alaska

Ice wedge polygons on the north slope of Alaska

Ice wedge polygons near the Chipp River area on the north slope of Alaska

By
Alaska Science Center
Three tents set up at the edge of the tundra on the north slope of Alaska
A north slope camp
A north slope camp
Three tents set up at the edge of the tundra on the north slope of Alaska

A north slope camp

A north slope camp

An enhanced photo of camp on the north slope.

By
Alaska Science Center
Three tents set up at the edge of the tundra on the north slope of Alaska

A north slope camp

A north slope camp

An enhanced photo of camp on the north slope.

By
Alaska Science Center
Clear Montana Bill Creek flowing into volcanically silted creek
Clear Montana Bill Creek flowing into volcanically silted creek
Clear Montana Bill Creek flowing into volcanically silted creek
Clear Montana Bill Creek flowing into volcanically silted creek

Clear Montana Bill Creek flowing into volcanically silted creek

Clear Montana Bill Creek flowing into volcanically silted creek

A clear Montana Bill Creek flowing into volcanically silted creek. Coho salmon are seen holding in the clear water area. Aerial surveys were done after the eruption of the Redoubt volcano to determine the condition of fish streams.

By
Alaska Science Center
Clear Montana Bill Creek flowing into volcanically silted creek

Clear Montana Bill Creek flowing into volcanically silted creek

Clear Montana Bill Creek flowing into volcanically silted creek

A clear Montana Bill Creek flowing into volcanically silted creek. Coho salmon are seen holding in the clear water area. Aerial surveys were done after the eruption of the Redoubt volcano to determine the condition of fish streams.

By
Alaska Science Center
Cannery Creek after the Redoubt Volcano eruption of 2009
Cannery Creek after the Redoubt Volcano eruption of 2009
Cannery Creek after the Redoubt Volcano eruption of 2009
Cannery Creek after the Redoubt Volcano eruption of 2009

Cannery Creek after the Redoubt Volcano eruption of 2009

Cannery Creek after the Redoubt Volcano eruption of 2009

Cannery Creek on the west side of Cook Inlet, Alaska.  Aerial surveys were done after the eruption of the Redoubt volcano to determine the condition of fish streams.

By
Alaska Science Center
Cannery Creek after the Redoubt Volcano eruption of 2009

Cannery Creek after the Redoubt Volcano eruption of 2009

Cannery Creek after the Redoubt Volcano eruption of 2009

Cannery Creek on the west side of Cook Inlet, Alaska.  Aerial surveys were done after the eruption of the Redoubt volcano to determine the condition of fish streams.

By
Alaska Science Center
A salmon holding in the clear water of Montana Bill Creek after the Redoubt Volcano 2009 eruption
Salmon in Montana Bill Creek after the Redoubt Volcano 2009 eruption
Salmon in Montana Bill Creek after the Redoubt Volcano 2009 eruption
A salmon holding in the clear water of Montana Bill Creek after the Redoubt Volcano 2009 eruption

Salmon in Montana Bill Creek after the Redoubt Volcano 2009 eruption

Salmon in Montana Bill Creek after the Redoubt Volcano 2009 eruption

A coho salmon holding in Montana Bill Creek after the Redoubt volcano eruption.

By
Alaska Science Center
A salmon holding in the clear water of Montana Bill Creek after the Redoubt Volcano 2009 eruption

Salmon in Montana Bill Creek after the Redoubt Volcano 2009 eruption

Salmon in Montana Bill Creek after the Redoubt Volcano 2009 eruption

A coho salmon holding in Montana Bill Creek after the Redoubt volcano eruption.

By
Alaska Science Center
A panorama of the Redoubt Volcano after the 2009 eruption and the Drift River delta in the foreground
Redoubt Volcano panorama with the Drift River Delta
Redoubt Volcano panorama with the Drift River Delta
A panorama of the Redoubt Volcano after the 2009 eruption and the Drift River delta in the foreground

Redoubt Volcano panorama with the Drift River Delta

Redoubt Volcano panorama with the Drift River Delta

A panorama of the Redoubt Volcano after the 2009 eruption and the Drift River delta in the foreground

By
Alaska Science Center
A panorama of the Redoubt Volcano after the 2009 eruption and the Drift River delta in the foreground

Redoubt Volcano panorama with the Drift River Delta

Redoubt Volcano panorama with the Drift River Delta

A panorama of the Redoubt Volcano after the 2009 eruption and the Drift River delta in the foreground

By
Alaska Science Center
The lower Drift River after the Redoubt Volcano 2009 eruption
The lower Drift River after the Redoubt Volcano 2009 eruption
The lower Drift River after the Redoubt Volcano 2009 eruption
The lower Drift River after the Redoubt Volcano 2009 eruption

The lower Drift River after the Redoubt Volcano 2009 eruption

The lower Drift River after the Redoubt Volcano 2009 eruption

Lower Drift River with tremendous amount of silt from the lahars. Aerial surveys were done after the eruption of the Redoubt volcano to determine the condition of fish streams.

By
Alaska Science Center
The lower Drift River after the Redoubt Volcano 2009 eruption

The lower Drift River after the Redoubt Volcano 2009 eruption

The lower Drift River after the Redoubt Volcano 2009 eruption

Lower Drift River with tremendous amount of silt from the lahars. Aerial surveys were done after the eruption of the Redoubt volcano to determine the condition of fish streams.

By
Alaska Science Center
Drift River lahar from shore after the Redoubt Volcano 2009 eruption
Drift River lahar from shore after the Redoubt Volcano 2009 eruption
Drift River lahar from shore after the Redoubt Volcano 2009 eruption
Drift River lahar from shore after the Redoubt Volcano 2009 eruption

Drift River lahar from shore after the Redoubt Volcano 2009 eruption

Drift River lahar from shore after the Redoubt Volcano 2009 eruption

Drift River on the west side of Cook Inlet, Alaska. Lahars from the eruption of Redoubt are evident. Surveys were done after the eruption of the Redoubt volcano to determine the condition of fish streams.

By
Alaska Science Center
Drift River lahar from shore after the Redoubt Volcano 2009 eruption

Drift River lahar from shore after the Redoubt Volcano 2009 eruption

Drift River lahar from shore after the Redoubt Volcano 2009 eruption

Drift River on the west side of Cook Inlet, Alaska. Lahars from the eruption of Redoubt are evident. Surveys were done after the eruption of the Redoubt volcano to determine the condition of fish streams.

By
Alaska Science Center
A Drift River lahar after the Redoubt Volcano 2009 eruption
A Drift River lahar after the Redoubt Volcano 2009 eruption
A Drift River lahar after the Redoubt Volcano 2009 eruption
A Drift River lahar after the Redoubt Volcano 2009 eruption

A Drift River lahar after the Redoubt Volcano 2009 eruption

A Drift River lahar after the Redoubt Volcano 2009 eruption

Drift River on the west side of Cook Inlet, Alaska. Lahars from the eruption of Redoubt are evident. Surveys were done after the eruption of the Redoubt volcano to determine the condition of fish streams.  Alaska Department of Fish and Game had done surveys in this particular area and found coho salmon before the eruption.

By
Alaska Science Center
A Drift River lahar after the Redoubt Volcano 2009 eruption

A Drift River lahar after the Redoubt Volcano 2009 eruption

A Drift River lahar after the Redoubt Volcano 2009 eruption

Drift River on the west side of Cook Inlet, Alaska. Lahars from the eruption of Redoubt are evident. Surveys were done after the eruption of the Redoubt volcano to determine the condition of fish streams.  Alaska Department of Fish and Game had done surveys in this particular area and found coho salmon before the eruption.

By
Alaska Science Center
View across the Drift River after the Redoubt Volcano 2009 eruption
View across the Drift River after the Redoubt Volcano 2009 eruption
View across the Drift River after the Redoubt Volcano 2009 eruption
View across the Drift River after the Redoubt Volcano 2009 eruption

View across the Drift River after the Redoubt Volcano 2009 eruption

View across the Drift River after the Redoubt Volcano 2009 eruption

View of the amount of lahar deposit from across the river and the amount of deposit the river has eroded out to sea in about 6 months. Surveys were done after the eruption of the Redoubt volcano to determine the condition of fish streams.

By
Alaska Science Center
View across the Drift River after the Redoubt Volcano 2009 eruption

View across the Drift River after the Redoubt Volcano 2009 eruption

View across the Drift River after the Redoubt Volcano 2009 eruption

View of the amount of lahar deposit from across the river and the amount of deposit the river has eroded out to sea in about 6 months. Surveys were done after the eruption of the Redoubt volcano to determine the condition of fish streams.

By
Alaska Science Center
Aerial view of the Lake Clark National Park and Preserve area
Aerial view of the Lake Clark National Park and Preserve area
Aerial view of the Lake Clark National Park and Preserve area
Aerial view of the Lake Clark National Park and Preserve area

Aerial view of the Lake Clark National Park and Preserve area

Aerial view of the Lake Clark National Park and Preserve area

Aerial views of Tuxedni Bay on the west side of Cook Inlet, Alaska.  This was during surveys for juvenile salmon distribution for the Anadromous Fish Catalog for the State of Alaska.

By
Alaska Science Center
Aerial view of the Lake Clark National Park and Preserve area

Aerial view of the Lake Clark National Park and Preserve area

Aerial view of the Lake Clark National Park and Preserve area

Aerial views of Tuxedni Bay on the west side of Cook Inlet, Alaska.  This was during surveys for juvenile salmon distribution for the Anadromous Fish Catalog for the State of Alaska.

By
Alaska Science Center
Aerial view of the Lake Clark National Park and Preserve area
Aerial view of the Lake Clark National Park and Preserve area
Aerial view of the Lake Clark National Park and Preserve area
Aerial view of the Lake Clark National Park and Preserve area

Aerial view of the Lake Clark National Park and Preserve area

Aerial view of the Lake Clark National Park and Preserve area

Aerial views of Tuxedni Bay on the west side of Cook Inlet, Alaska.  This was during surveys for juvenile salmon distribution for the Anadromous Fish Catalog for the State of Alaska.

By
Alaska Science Center
Aerial view of the Lake Clark National Park and Preserve area

Aerial view of the Lake Clark National Park and Preserve area

Aerial view of the Lake Clark National Park and Preserve area

Aerial views of Tuxedni Bay on the west side of Cook Inlet, Alaska.  This was during surveys for juvenile salmon distribution for the Anadromous Fish Catalog for the State of Alaska.

By
Alaska Science Center
A tributary of Lake Clark, Alaska
A tributary of Lake Clark, Alaska
A tributary of Lake Clark, Alaska
A tributary of Lake Clark, Alaska

A tributary of Lake Clark, Alaska

A tributary of Lake Clark, Alaska

Aerial views of streams on the west side of Cook Inlet, Alaska.  This was during surveys for juvenile salmon distribution for the Anadromous Fish Catalog for the State of Alaska.

By
Alaska Science Center
A tributary of Lake Clark, Alaska

A tributary of Lake Clark, Alaska

A tributary of Lake Clark, Alaska

Aerial views of streams on the west side of Cook Inlet, Alaska.  This was during surveys for juvenile salmon distribution for the Anadromous Fish Catalog for the State of Alaska.

By
Alaska Science Center
Filter Total Items: 74

Linking permafrost to the abundance, biomass, and energy density of fish in Arctic headwater streams Linking permafrost to the abundance, biomass, and energy density of fish in Arctic headwater streams

Permafrost thaw alters groundwater flow, river hydrology, stream-catchment interactions, and the availability of carbon and nutrients in headwater streams. The impact of permafrost on watershed hydrology and biogeochemistry of headwater streams has been demonstrated, but there is little understanding of how permafrost influences fish in these ecosystems. We examined relations among...
Authors
Michael Carey, Joshua Koch, Jonathan O’Donnell, Brett Poulin, Christian Zimmerman
By
Alaska Science Center

Metal mobilization from thawing permafrost to aquatic ecosystems is driving rusting of Arctic streams Metal mobilization from thawing permafrost to aquatic ecosystems is driving rusting of Arctic streams

Climate change in the Arctic is altering watershed hydrologic processes and biogeochemistry. Here, we present an emergent threat to Arctic watersheds based on observations from 75 streams in Alaska’s Brooks Range that recently turned orange, reflecting increased loading of iron and toxic metals. Using remote sensing, we constrain the timing of stream discoloration to the last 10 years, a...
Authors
Jonathan O’Donnell, Michael Carey, Joshua Koch, Carson Baughman, Kenneth Hill, Christian Zimmerman, Patrick F. Sullivan, Roman Dial, Timothy J. Lyons, David Cooper, Brett A. Poulin
By
Alaska Science Center

Differential heat shock protein responses in two species of Pacific salmon and their utility in identifying heat stress Differential heat shock protein responses in two species of Pacific salmon and their utility in identifying heat stress

Rapid and accelerating warming of salmon habitat has the potential to lower productivity of Pacific salmon (Oncorhynchus species) populations. Heat stress biomarkers can indicate where warming is most likely affecting fish populations; however, we often lack clear classifications that separate individuals with and without heat stress needed to make these tools operational. We conducted a...
Authors
Vanessa von Biela, Amy Regish, Lizabeth Bowen, Ashley Stanek, Shannon Waters-Dynes, Michael Carey, Christian Zimmerman, Jonathon Gerken, Daniel Rinella, Stephen McCormick
By
Ecosystems Mission Area, Eastern Ecological Science Center, Western Ecological Research Center (WERC), Alaska Science Center

Rivers of Arctic North America Rivers of Arctic North America

This chapter describes the geomorphology, hydrology, chemistry, biodiversity, and ecology of rivers in the North American Arctic. The history, physiography, climate, and land use of the Arctic regions are also described. The chapter includes details on the Kobuk and Colville rivers in Alaska, the Thelon and Kazan rivers in the central Canadian Arctic, Koroc River and Nakvak Brook in the...
Authors
Jennifer Lento, Sarah Laske, Eric Luiker, Joseph Culp, Leslie Jones, Christian Zimmerman, Wendy Monk
By
Alaska Science Center

Elodea mediates juvenile salmon growth by altering physical structure in freshwater habitats Elodea mediates juvenile salmon growth by altering physical structure in freshwater habitats

Invasive species introductions in high latitudes are accelerating and elevating the need to address questions of their effects on Subarctic and Arctic ecosystems. As a driver of ecosystem function, submerged aquatic vegetation is one of the most deleterious biological invasions to aquatic food webs. The aquatic plant Elodea spp. has potential to be a widespread invader to Arctic and...
Authors
Michael Carey, Gordon Reeves, Suresh Sethi, Theresa Tanner, Daniel Young, Krista Bartz, Christian Zimmerman
By
Ecosystems Mission Area, Alaska Science Center

Investigating effects of climate-induced changes in water temperature and diet on mercury concentrations in an Arctic freshwater forage fish Investigating effects of climate-induced changes in water temperature and diet on mercury concentrations in an Arctic freshwater forage fish

The amount of mercury (Hg) in Arctic lake food webs is, and will continue to be, affected by rapid, ongoing climate change. At warmer temperatures, fish require more energy to sustain growth; changes in their metabolic rates and consuming prey with potentially higher Hg concentrations could result in increased Hg accumulation. To examine the potential implications of climate warming on...
Authors
Sarah Laske, Samantha Burke, Michael Carey, Heidi Swanson, Christian Zimmerman
By
Alaska Science Center

Lake trout (Salvelinus namaycush) otoliths indicate effects of climate and lake morphology on growth patterns in Arctic lakes Lake trout (Salvelinus namaycush) otoliths indicate effects of climate and lake morphology on growth patterns in Arctic lakes

Climate change is occurring rapidly in the Arctic, and an improved understanding of the response of aquatic biota and ecosystems will be important for this data-limited region. Here, we applied biochronology techniques and mixed-effects modelling to assess relationships among growth increments found on lake trout (Salvelinus namaycush) otoliths (N = 49) captured from 13 lakes on the...
Authors
Eric Torvinen, Jeffrey Falke, Christopher Arp, Benjamin Jones, Matthew Whitman, Christian Zimmerman
By
Ecosystems Mission Area, Cooperative Research Units, Alaska Science Center

Fish ear stones offer climate change clues in Alaska's lakes Fish ear stones offer climate change clues in Alaska's lakes

Otoliths, also known as ear stones, are small body parts that help fish with hearing and balance. Like tree rings, otoliths form one light and one dark band per year, creating rings. These rings can be measured to understand fish growth. The wider the ring, the greater the growth. In our study, we used otoliths to understand how one fish species—lake trout—responds to rising temperature...
Authors
Krista Bartz, Vanessa von Biela, Bryan Black, Daniel Young, Peter van der Sleen, Christian Zimmerman
By
Alaska Science Center

First juvenile Chum Salmon confirms successful reproduction for Pacific salmon in the North American Arctic First juvenile Chum Salmon confirms successful reproduction for Pacific salmon in the North American Arctic

The distributional extent of Pacific salmon Oncorhynchus spp. in the North American Arctic is unresolved. While adult Pacific salmon have a recurring presence across the Alaskan North Slope and into the Canadian Arctic, it is uncertain if these fish are part of established Arctic populations, vagrants from outside sources reproducing unsuccessfully, or both. Here we present the first...
Authors
Karen Dunmall, Darcy McNicholl, Christian Zimmerman, Sara Gilk-Baumer, Sean Burril, Vanessa von Biela
By
Ecosystems Mission Area, Alaska Science Center

Premature mortality observations among Alaska’s Pacific salmon during record heat and drought in 2019 Premature mortality observations among Alaska’s Pacific salmon during record heat and drought in 2019

Widespread mortality of Pacific salmon Oncorhynchus spp. returning to spawn in Alaska coincided with record-breaking air temperatures and prolonged drought in summer 2019. Extreme environmental conditions are expected to happen more frequently with rapid climate change and challenge the notion that Alaska could indefinitely provide abundant, cool freshwater habitat for Pacific salmon. A...
Authors
Vanessa von Biela, Christopher Sergeant, Michael Carey, Zachary Liller, Charles Russell, Stephanie Quinn-Davidson, Peter S. Rand, P. A. H. Westley, Christian Zimmerman
By
Alaska Science Center

Circumpolar patterns of Arctic freshwater fish biodiversity: A baseline for monitoring Circumpolar patterns of Arctic freshwater fish biodiversity: A baseline for monitoring

Climate change, biological invasions, and anthropogenic disturbance pose a threat to the biodiversity and function of Arctic freshwater ecosystems. Understanding potential changes in fish species distribution and richness is necessary, given the great importance of fish to the function of freshwater ecosystems and as a resource to humans. However, information gaps limit large-scale...
Authors
Sarah Laske, Per-Arne Amundsen, Kirsten Christoffersen, Jaakko Erkinaro, Gudni Gudbergsson, Brian Hayden, Jani Heino, Kerstin Holmgren, Kimmo Kahilainen, Jennifer Lento, Panu Orell, Johan Ostergren, Michael Power, Ruslan Rafikov, Atso Romakkaniemi, Martin-A. Svenning, Heidi Swanson, Matthew Whitman, Christian Zimmerman
By
Ecosystems Mission Area, Alaska Science Center

Diversity of diatoms, benthic macroinvertebrates, and fish varies in response to different environmental correlates in Arctic rivers across North America Diversity of diatoms, benthic macroinvertebrates, and fish varies in response to different environmental correlates in Arctic rivers across North America

Climate change poses a significant threat to Arctic freshwater biodiversity, but impacts depend upon the strength of organism response to climate‐related drivers. Currently, there is insufficient knowledge about Arctic freshwater biodiversity patterns to guide assessment, prediction, and management of biodiversity change.As part of the Circumpolar Biodiversity Monitoring Program's first...
Authors
Jennifer Lento, Sarah Laske, Isabelle Lavoie, Daniel Bogan, Bob Brua, Stephane Campeau, Krista Chin, Joseph Culp, Brianna Levenstein, Michael Power, Emilie Saulnier-Talbot, Rebecca Shaftel, Heidi Swanson, Matthew Whitman, Christian Zimmerman
By
Ecosystems Mission Area, Alaska Science Center

Science and Products

Filter Total Items: 18
Orange colored water flowing into Kugororuk River, Alaska. Brown ground with vegetation, snow patches with mountains sky.

The Rusting of Arctic Rivers: Freshwater Ecosystems Respond to Rapidly Uptaking Metals

The water quality of streams and rivers in the Arctic is sensitive to rapid climate change and altered disturbance regimes.
By
Ecosystems Mission Area, Water Resources Mission Area, Alaska Science Center
The Rusting of Arctic Rivers: Freshwater Ecosystems Respond to Rapidly Uptaking Metals

The Rusting of Arctic Rivers: Freshwater Ecosystems Respond to Rapidly Uptaking Metals

The water quality of streams and rivers in the Arctic is sensitive to rapid climate change and altered disturbance regimes.
Learn More
Scientist walking up the Akilik River with a minnow trap to catch fish

Hydro-Ecology of Arctic Thawing (HEAT): Ecology

Permafrost thaw is leading to a myriad of changes in physical and chemical conditions throughout the Arctic.
By
Ecosystems Mission Area, Land Management Research Program, Species Management Research Program, Alaska Science Center
Hydro-Ecology of Arctic Thawing (HEAT): Ecology

Hydro-Ecology of Arctic Thawing (HEAT): Ecology

Permafrost thaw is leading to a myriad of changes in physical and chemical conditions throughout the Arctic.
Learn More
Two scientists examine a rocky shoreline covered in yellow algae and seaweed.

Q&A: USGS Ecosystems Provides Objective Science to Manage Lands, Fish, and Wildlife

The USGS Ecosystems Mission Area is the only program within the Department of Interior (DOI) focused on generating science to inform the management of the nation’s lands, fish, and wildlife. The Ecosystems Mission Area is also the only entity with the specific role of meeting the information needs of DOI agencies (e.g., Bureau of Land Management, Bureau of Ocean Energy Management, National Park...
By
Alaska Science Center
Q&A: USGS Ecosystems Provides Objective Science to Manage Lands, Fish, and Wildlife

Q&A: USGS Ecosystems Provides Objective Science to Manage Lands, Fish, and Wildlife

The USGS Ecosystems Mission Area is the only program within the Department of Interior (DOI) focused on generating science to inform the management of the nation’s lands, fish, and wildlife. The Ecosystems Mission Area is also the only entity with the specific role of meeting the information needs of DOI agencies (e.g., Bureau of Land Management, Bureau of Ocean Energy Management, National Park...
Learn More
Map of Alaska with multiple colors throughout the state representative areas of different geology.

Q&A: The Role of USGS Ecosystems Science in Alaska

The USGS is the science arm of the Department of the Interior (DOI) with a mission to provide timely and impartial science information to decision-makers, industry, and others. Topics of USGS research and monitoring in Alaska include Ecosystems, Energy and Minerals, Geology, Water Resources, and Natural Hazards. At the Ecosystems Office of the USGS Alaska Science Center, research and monitoring...
By
Alaska Science Center
Q&A: The Role of USGS Ecosystems Science in Alaska

Q&A: The Role of USGS Ecosystems Science in Alaska

The USGS is the science arm of the Department of the Interior (DOI) with a mission to provide timely and impartial science information to decision-makers, industry, and others. Topics of USGS research and monitoring in Alaska include Ecosystems, Energy and Minerals, Geology, Water Resources, and Natural Hazards. At the Ecosystems Office of the USGS Alaska Science Center, research and monitoring...
Learn More
Sockeye salmon spawning in Grand Central River on the Seward Peninsula, Alaska

Q&A: USGS Ecosystems Science Provides Information on Subsistence and Hunter-Harvested Food Resources in Alaska

The USGS is the science arm of the Department of the Interior with a mission to provide timely and impartial science information to decision-makers, industry, tribal entities and others. In Alaska, subsistence and hunter-harvested foods are kitchen table issues for the public. The annual subsistence harvest per rural resident is 295 pounds of wild food. USGS science is responsive to subsistence...
By
Alaska Science Center
Q&A: USGS Ecosystems Science Provides Information on Subsistence and Hunter-Harvested Food Resources in Alaska

Q&A: USGS Ecosystems Science Provides Information on Subsistence and Hunter-Harvested Food Resources in Alaska

The USGS is the science arm of the Department of the Interior with a mission to provide timely and impartial science information to decision-makers, industry, tribal entities and others. In Alaska, subsistence and hunter-harvested foods are kitchen table issues for the public. The annual subsistence harvest per rural resident is 295 pounds of wild food. USGS science is responsive to subsistence...
Learn More
Biologist transferring a muscle biopsy from the sampler to the vial

Assessing heat stress in migrating Yukon River Chinook Salmon

We will examine evidence of heat stress in Yukon River Chinook salmon ( Oncorhynchus tshawytscha) using heat shock proteins and gene expression.
By
Species Management Research Program, Alaska Science Center, Western Ecological Research Center (WERC)
Assessing heat stress in migrating Yukon River Chinook Salmon

Assessing heat stress in migrating Yukon River Chinook Salmon

We will examine evidence of heat stress in Yukon River Chinook salmon ( Oncorhynchus tshawytscha) using heat shock proteins and gene expression.
Learn More
Sampling a stream in the mist in the Akilik River drainage

Natural Resources Preservation Program

This is a nation-wide collaborative program, supported by the USGS Ecosystems Mission Area, through which USGS and National Park Service staff address priority research needs identified by the National Park Service. On this page, we highlight research taking place in Alaska as part of this program.
By
Alaska Science Center
Natural Resources Preservation Program

Natural Resources Preservation Program

This is a nation-wide collaborative program, supported by the USGS Ecosystems Mission Area, through which USGS and National Park Service staff address priority research needs identified by the National Park Service. On this page, we highlight research taking place in Alaska as part of this program.
Learn More
USGS Alaska Science Center sign

Exploring Alaska Through Our Science

The USGS conducts scientific research for the Department of the Interior (DOI). The Alaska Science Center (ASC) provides objective and timely data, information, and research findings to Federal, State, and local resource managers and the public but has no regulatory authority. Our science helps support sound decisions regarding natural resources, natural hazards, and ecosystems in Alaska and...
By
Alaska Science Center
Exploring Alaska Through Our Science

Exploring Alaska Through Our Science

The USGS conducts scientific research for the Department of the Interior (DOI). The Alaska Science Center (ASC) provides objective and timely data, information, and research findings to Federal, State, and local resource managers and the public but has no regulatory authority. Our science helps support sound decisions regarding natural resources, natural hazards, and ecosystems in Alaska and...
Learn More
A Red-throated Loon swimming in a small lake

Outer Continental Shelf Program

This is a nation-wide collaborative program, supported by the USGS Ecosystems Mission Area, through which USGS and Bureau of Ocean Energy Management staff address priority research needs identified by the Bureau of Ocean Energy Management. On this page, we highlight research taking place in Alaska as part of this program.
By
Alaska Science Center
Outer Continental Shelf Program

Outer Continental Shelf Program

This is a nation-wide collaborative program, supported by the USGS Ecosystems Mission Area, through which USGS and Bureau of Ocean Energy Management staff address priority research needs identified by the Bureau of Ocean Energy Management. On this page, we highlight research taking place in Alaska as part of this program.
Learn More
USGS gage 15955000 Canning River above Staines River near Deadhorse, AK. Derek Frohbelter loading helicopter for return to Kavik

Science Support Program and Quick Response Program

This is a nation-wide collaborative program, supported by the USGS Ecosystems Mission Area, through which USGS and U.S. Fish and Wildlife Service staff address priority research needs identified by the U.S. Fish and Wildlife Service. On this page, we highlight research taking place in Alaska as part of this program.
By
Alaska Science Center
Science Support Program and Quick Response Program

Science Support Program and Quick Response Program

This is a nation-wide collaborative program, supported by the USGS Ecosystems Mission Area, through which USGS and U.S. Fish and Wildlife Service staff address priority research needs identified by the U.S. Fish and Wildlife Service. On this page, we highlight research taking place in Alaska as part of this program.
Learn More
Andrew Reeves retrieving samples at Izembek National Wildlife Refuge, Alaska

Collaborative Science for Priority Information Needs

One of the primary missions of the USGS is to address the science needs of Department of Interior bureaus, particularly those that manage natural resources and lands. This mission is fulfilled through the research and other activities of USGS scientists but also specifically through three USGS nationally-funded programs listed below.
By
Alaska Science Center
Collaborative Science for Priority Information Needs

Collaborative Science for Priority Information Needs

One of the primary missions of the USGS is to address the science needs of Department of Interior bureaus, particularly those that manage natural resources and lands. This mission is fulfilled through the research and other activities of USGS scientists but also specifically through three USGS nationally-funded programs listed below.
Learn More
The north fork of the Agashashok River

Hydro-Ecology of Arctic Thawing (HEAT): Hydrology

The Arctic is warming at higher rates than much of the rest of the world. For Alaska, this results in changes in hydrology and ecosystems – permafrost is thawing, changing landscapes and releasing nutrients to soils and streams.
By
Land Management Research Program, Alaska Science Center
Hydro-Ecology of Arctic Thawing (HEAT): Hydrology

Hydro-Ecology of Arctic Thawing (HEAT): Hydrology

The Arctic is warming at higher rates than much of the rest of the world. For Alaska, this results in changes in hydrology and ecosystems – permafrost is thawing, changing landscapes and releasing nutrients to soils and streams.
Learn More

Arctic Cisco Stable Isotope Data, Prudhoe Bay, August 2009 Arctic Cisco Stable Isotope Data, Prudhoe Bay, August 2009

This data set documents the carbon and nitrogen stable isotope ratios of age-0 Arctic cisco (Coregonus autumnalis) captured in Prudhoe Bay, Alaska in August 2009.
By
Alaska Science Center

Arctic Cisco Stomach Content Data, Prudhoe Bay, August 2009 Arctic Cisco Stomach Content Data, Prudhoe Bay, August 2009

This data set documents the stomach contents of age-0 Arctic cisco (Coregonus autumnalis) captured in Prudhoe Bay, Alaska in August 2009.
By
Alaska Science Center

Count of Sockeye Salmon (Oncorhynchus nerka), River Temperature, and River Height in the Pilgrim River, Nome, Alaska, 2003-2014 Count of Sockeye Salmon (Oncorhynchus nerka), River Temperature, and River Height in the Pilgrim River, Nome, Alaska, 2003-2014

The dataset is the daily count of Sockeye Salmon (Oncorhynchus nerka) passing through a fish counting weir on the Pilgrim River from 2003 to 2014. Also, included in the data set is the daily temperature and river height measured at the weir (65.103071°, -164.824046°).The fish weir was operated during the summer (late June to mid-September) by the Norton Sound Economic Development...
By
Alaska Science Center
Filter Total Items: 65
Barry Arm of Harriman Fjord, Prince William Sound, Alaska
Barry Arm of Harriman Fjord, Prince William Sound, Alaska
Barry Arm of Harriman Fjord, Prince William Sound, Alaska
Barry Arm of Harriman Fjord, Prince William Sound, Alaska

Barry Arm of Harriman Fjord, Prince William Sound, Alaska

Barry Arm of Harriman Fjord, Prince William Sound, Alaska

Barry Arm of Harriman Fjord, Prince William Sound, Alaska. Included is Barry Glacier and Cascade Glacier.

By
Natural Hazards Mission Area, Landslide Hazards Program, Alaska Science Center
Barry Arm of Harriman Fjord, Prince William Sound, Alaska

Barry Arm of Harriman Fjord, Prince William Sound, Alaska

Barry Arm of Harriman Fjord, Prince William Sound, Alaska

Barry Arm of Harriman Fjord, Prince William Sound, Alaska. Included is Barry Glacier and Cascade Glacier.

By
Natural Hazards Mission Area, Landslide Hazards Program, Alaska Science Center
Fyke net contents from a lake near Atqasuk, Alaska mainly sticklebacks
Fyke net contents from a lake near Atqasuk, Alaska
Fyke net contents from a lake near Atqasuk, Alaska
Fyke net contents from a lake near Atqasuk, Alaska mainly sticklebacks

Fyke net contents from a lake near Atqasuk, Alaska

Fyke net contents from a lake near Atqasuk, Alaska

Contents of the fyke net that was set in the lake near Atqasuk in 2016.  All sticklebacks.

By
Alaska Science Center
Fyke net contents from a lake near Atqasuk, Alaska mainly sticklebacks

Fyke net contents from a lake near Atqasuk, Alaska

Fyke net contents from a lake near Atqasuk, Alaska

Contents of the fyke net that was set in the lake near Atqasuk in 2016.  All sticklebacks.

By
Alaska Science Center
Two scientists in a boat sampling the water of Pilgrim River
Water quality measurements on the Pilgrim River
Water quality measurements on the Pilgrim River
Two scientists in a boat sampling the water of Pilgrim River

Water quality measurements on the Pilgrim River

Water quality measurements on the Pilgrim River

Collecting water quality data on the Pilgrim River. Types of measurements taken were on water temperature, dissolved oxygen, pH, and conductivity.

By
Alaska Science Center
Two scientists in a boat sampling the water of Pilgrim River

Water quality measurements on the Pilgrim River

Water quality measurements on the Pilgrim River

Collecting water quality data on the Pilgrim River. Types of measurements taken were on water temperature, dissolved oxygen, pH, and conductivity.

By
Alaska Science Center
Setting nets on Whitefish Lake on Lake Clark Nat'l Park and Preserve
Setting nets on Whitefish Lake on Lake Clark Nat'l Park and Preserve
Setting nets on Whitefish Lake on Lake Clark Nat'l Park and Preserve
Setting nets on Whitefish Lake on Lake Clark Nat'l Park and Preserve

Setting nets on Whitefish Lake on Lake Clark Nat'l Park and Preserve

Setting nets on Whitefish Lake on Lake Clark Nat'l Park and Preserve

Randy Brown and Dan Young are setting nets to catch whitefish on Whitefish Lake in the Lake Clark National Park and Preserve.

By
Alaska Science Center
Setting nets on Whitefish Lake on Lake Clark Nat'l Park and Preserve

Setting nets on Whitefish Lake on Lake Clark Nat'l Park and Preserve

Setting nets on Whitefish Lake on Lake Clark Nat'l Park and Preserve

Randy Brown and Dan Young are setting nets to catch whitefish on Whitefish Lake in the Lake Clark National Park and Preserve.

By
Alaska Science Center
Lake Clark outlet
Lake Clark outlet
Lake Clark outlet
Lake Clark outlet

Lake Clark outlet

Lake Clark outlet

Lake Clark outlet

By
Alaska Science Center
Lake Clark outlet

Lake Clark outlet

Lake Clark outlet

Lake Clark outlet

By
Alaska Science Center
Image: Kijik Lake
Kijik Lake
Kijik Lake
Image: Kijik Lake

Kijik Lake

Kijik Lake

Kijik Lake in Lake Clark National Park and Preserve, Alaska. USGS researchers study salmon ecology in cooperation with NPS.

By
Alaska Science Center, Communications and Publishing
Image: Kijik Lake

Kijik Lake

Kijik Lake

Kijik Lake in Lake Clark National Park and Preserve, Alaska. USGS researchers study salmon ecology in cooperation with NPS.

By
Alaska Science Center, Communications and Publishing
Reflections of Tanalian Mountain and Hardenburg Bay in Lake Clark, Alaska
Tanalian Mountain and Hardenburg Bay in Lake Clark, Alaska
Tanalian Mountain and Hardenburg Bay in Lake Clark, Alaska
Reflections of Tanalian Mountain and Hardenburg Bay in Lake Clark, Alaska

Tanalian Mountain and Hardenburg Bay in Lake Clark, Alaska

Tanalian Mountain and Hardenburg Bay in Lake Clark, Alaska

Reflections of Tanalian Mountain and Hardenburg Bay in Lake Clark, Alaska. Near Port Alsworth.

By
Alaska Science Center
Reflections of Tanalian Mountain and Hardenburg Bay in Lake Clark, Alaska

Tanalian Mountain and Hardenburg Bay in Lake Clark, Alaska

Tanalian Mountain and Hardenburg Bay in Lake Clark, Alaska

Reflections of Tanalian Mountain and Hardenburg Bay in Lake Clark, Alaska. Near Port Alsworth.

By
Alaska Science Center
Two biologists sorting through invertebrates they collected from a nearby lake on the north slope of Alaska
Sorting through invertebrates from a north slope lake of Alaska
Sorting through invertebrates from a north slope lake of Alaska
Two biologists sorting through invertebrates they collected from a nearby lake on the north slope of Alaska

Sorting through invertebrates from a north slope lake of Alaska

Sorting through invertebrates from a north slope lake of Alaska

As part of the Changing Arctic Ecosystem project, two biologists sampling invertebrates near the Chipp River area.

By
Alaska Science Center
Two biologists sorting through invertebrates they collected from a nearby lake on the north slope of Alaska

Sorting through invertebrates from a north slope lake of Alaska

Sorting through invertebrates from a north slope lake of Alaska

As part of the Changing Arctic Ecosystem project, two biologists sampling invertebrates near the Chipp River area.

By
Alaska Science Center
Ice wedge polygons on the north slope of Alaska
Ice wedge polygons on the north slope of Alaska
Ice wedge polygons on the north slope of Alaska
Ice wedge polygons on the north slope of Alaska

Ice wedge polygons on the north slope of Alaska

Ice wedge polygons on the north slope of Alaska

Ice wedge polygons near the Chipp River area on the north slope of Alaska

By
Alaska Science Center
Ice wedge polygons on the north slope of Alaska

Ice wedge polygons on the north slope of Alaska

Ice wedge polygons on the north slope of Alaska

Ice wedge polygons near the Chipp River area on the north slope of Alaska

By
Alaska Science Center
Three tents set up at the edge of the tundra on the north slope of Alaska
A north slope camp
A north slope camp
Three tents set up at the edge of the tundra on the north slope of Alaska

A north slope camp

A north slope camp

An enhanced photo of camp on the north slope.

By
Alaska Science Center
Three tents set up at the edge of the tundra on the north slope of Alaska

A north slope camp

A north slope camp

An enhanced photo of camp on the north slope.

By
Alaska Science Center
Clear Montana Bill Creek flowing into volcanically silted creek
Clear Montana Bill Creek flowing into volcanically silted creek
Clear Montana Bill Creek flowing into volcanically silted creek
Clear Montana Bill Creek flowing into volcanically silted creek

Clear Montana Bill Creek flowing into volcanically silted creek

Clear Montana Bill Creek flowing into volcanically silted creek

A clear Montana Bill Creek flowing into volcanically silted creek. Coho salmon are seen holding in the clear water area. Aerial surveys were done after the eruption of the Redoubt volcano to determine the condition of fish streams.

By
Alaska Science Center
Clear Montana Bill Creek flowing into volcanically silted creek

Clear Montana Bill Creek flowing into volcanically silted creek

Clear Montana Bill Creek flowing into volcanically silted creek

A clear Montana Bill Creek flowing into volcanically silted creek. Coho salmon are seen holding in the clear water area. Aerial surveys were done after the eruption of the Redoubt volcano to determine the condition of fish streams.

By
Alaska Science Center
Cannery Creek after the Redoubt Volcano eruption of 2009
Cannery Creek after the Redoubt Volcano eruption of 2009
Cannery Creek after the Redoubt Volcano eruption of 2009
Cannery Creek after the Redoubt Volcano eruption of 2009

Cannery Creek after the Redoubt Volcano eruption of 2009

Cannery Creek after the Redoubt Volcano eruption of 2009

Cannery Creek on the west side of Cook Inlet, Alaska.  Aerial surveys were done after the eruption of the Redoubt volcano to determine the condition of fish streams.

By
Alaska Science Center
Cannery Creek after the Redoubt Volcano eruption of 2009

Cannery Creek after the Redoubt Volcano eruption of 2009

Cannery Creek after the Redoubt Volcano eruption of 2009

Cannery Creek on the west side of Cook Inlet, Alaska.  Aerial surveys were done after the eruption of the Redoubt volcano to determine the condition of fish streams.

By
Alaska Science Center
A salmon holding in the clear water of Montana Bill Creek after the Redoubt Volcano 2009 eruption
Salmon in Montana Bill Creek after the Redoubt Volcano 2009 eruption
Salmon in Montana Bill Creek after the Redoubt Volcano 2009 eruption
A salmon holding in the clear water of Montana Bill Creek after the Redoubt Volcano 2009 eruption

Salmon in Montana Bill Creek after the Redoubt Volcano 2009 eruption

Salmon in Montana Bill Creek after the Redoubt Volcano 2009 eruption

A coho salmon holding in Montana Bill Creek after the Redoubt volcano eruption.

By
Alaska Science Center
A salmon holding in the clear water of Montana Bill Creek after the Redoubt Volcano 2009 eruption

Salmon in Montana Bill Creek after the Redoubt Volcano 2009 eruption

Salmon in Montana Bill Creek after the Redoubt Volcano 2009 eruption

A coho salmon holding in Montana Bill Creek after the Redoubt volcano eruption.

By
Alaska Science Center
A panorama of the Redoubt Volcano after the 2009 eruption and the Drift River delta in the foreground
Redoubt Volcano panorama with the Drift River Delta
Redoubt Volcano panorama with the Drift River Delta
A panorama of the Redoubt Volcano after the 2009 eruption and the Drift River delta in the foreground

Redoubt Volcano panorama with the Drift River Delta

Redoubt Volcano panorama with the Drift River Delta

A panorama of the Redoubt Volcano after the 2009 eruption and the Drift River delta in the foreground

By
Alaska Science Center
A panorama of the Redoubt Volcano after the 2009 eruption and the Drift River delta in the foreground

Redoubt Volcano panorama with the Drift River Delta

Redoubt Volcano panorama with the Drift River Delta

A panorama of the Redoubt Volcano after the 2009 eruption and the Drift River delta in the foreground

By
Alaska Science Center
The lower Drift River after the Redoubt Volcano 2009 eruption
The lower Drift River after the Redoubt Volcano 2009 eruption
The lower Drift River after the Redoubt Volcano 2009 eruption
The lower Drift River after the Redoubt Volcano 2009 eruption

The lower Drift River after the Redoubt Volcano 2009 eruption

The lower Drift River after the Redoubt Volcano 2009 eruption

Lower Drift River with tremendous amount of silt from the lahars. Aerial surveys were done after the eruption of the Redoubt volcano to determine the condition of fish streams.

By
Alaska Science Center
The lower Drift River after the Redoubt Volcano 2009 eruption

The lower Drift River after the Redoubt Volcano 2009 eruption

The lower Drift River after the Redoubt Volcano 2009 eruption

Lower Drift River with tremendous amount of silt from the lahars. Aerial surveys were done after the eruption of the Redoubt volcano to determine the condition of fish streams.

By
Alaska Science Center
Drift River lahar from shore after the Redoubt Volcano 2009 eruption
Drift River lahar from shore after the Redoubt Volcano 2009 eruption
Drift River lahar from shore after the Redoubt Volcano 2009 eruption
Drift River lahar from shore after the Redoubt Volcano 2009 eruption

Drift River lahar from shore after the Redoubt Volcano 2009 eruption

Drift River lahar from shore after the Redoubt Volcano 2009 eruption

Drift River on the west side of Cook Inlet, Alaska. Lahars from the eruption of Redoubt are evident. Surveys were done after the eruption of the Redoubt volcano to determine the condition of fish streams.

By
Alaska Science Center
Drift River lahar from shore after the Redoubt Volcano 2009 eruption

Drift River lahar from shore after the Redoubt Volcano 2009 eruption

Drift River lahar from shore after the Redoubt Volcano 2009 eruption

Drift River on the west side of Cook Inlet, Alaska. Lahars from the eruption of Redoubt are evident. Surveys were done after the eruption of the Redoubt volcano to determine the condition of fish streams.

By
Alaska Science Center
A Drift River lahar after the Redoubt Volcano 2009 eruption
A Drift River lahar after the Redoubt Volcano 2009 eruption
A Drift River lahar after the Redoubt Volcano 2009 eruption
A Drift River lahar after the Redoubt Volcano 2009 eruption

A Drift River lahar after the Redoubt Volcano 2009 eruption

A Drift River lahar after the Redoubt Volcano 2009 eruption

Drift River on the west side of Cook Inlet, Alaska. Lahars from the eruption of Redoubt are evident. Surveys were done after the eruption of the Redoubt volcano to determine the condition of fish streams.  Alaska Department of Fish and Game had done surveys in this particular area and found coho salmon before the eruption.

By
Alaska Science Center
A Drift River lahar after the Redoubt Volcano 2009 eruption

A Drift River lahar after the Redoubt Volcano 2009 eruption

A Drift River lahar after the Redoubt Volcano 2009 eruption

Drift River on the west side of Cook Inlet, Alaska. Lahars from the eruption of Redoubt are evident. Surveys were done after the eruption of the Redoubt volcano to determine the condition of fish streams.  Alaska Department of Fish and Game had done surveys in this particular area and found coho salmon before the eruption.

By
Alaska Science Center
View across the Drift River after the Redoubt Volcano 2009 eruption
View across the Drift River after the Redoubt Volcano 2009 eruption
View across the Drift River after the Redoubt Volcano 2009 eruption
View across the Drift River after the Redoubt Volcano 2009 eruption

View across the Drift River after the Redoubt Volcano 2009 eruption

View across the Drift River after the Redoubt Volcano 2009 eruption

View of the amount of lahar deposit from across the river and the amount of deposit the river has eroded out to sea in about 6 months. Surveys were done after the eruption of the Redoubt volcano to determine the condition of fish streams.

By
Alaska Science Center
View across the Drift River after the Redoubt Volcano 2009 eruption

View across the Drift River after the Redoubt Volcano 2009 eruption

View across the Drift River after the Redoubt Volcano 2009 eruption

View of the amount of lahar deposit from across the river and the amount of deposit the river has eroded out to sea in about 6 months. Surveys were done after the eruption of the Redoubt volcano to determine the condition of fish streams.

By
Alaska Science Center
Aerial view of the Lake Clark National Park and Preserve area
Aerial view of the Lake Clark National Park and Preserve area
Aerial view of the Lake Clark National Park and Preserve area
Aerial view of the Lake Clark National Park and Preserve area

Aerial view of the Lake Clark National Park and Preserve area

Aerial view of the Lake Clark National Park and Preserve area

Aerial views of Tuxedni Bay on the west side of Cook Inlet, Alaska.  This was during surveys for juvenile salmon distribution for the Anadromous Fish Catalog for the State of Alaska.

By
Alaska Science Center
Aerial view of the Lake Clark National Park and Preserve area

Aerial view of the Lake Clark National Park and Preserve area

Aerial view of the Lake Clark National Park and Preserve area

Aerial views of Tuxedni Bay on the west side of Cook Inlet, Alaska.  This was during surveys for juvenile salmon distribution for the Anadromous Fish Catalog for the State of Alaska.

By
Alaska Science Center
Aerial view of the Lake Clark National Park and Preserve area
Aerial view of the Lake Clark National Park and Preserve area
Aerial view of the Lake Clark National Park and Preserve area
Aerial view of the Lake Clark National Park and Preserve area

Aerial view of the Lake Clark National Park and Preserve area

Aerial view of the Lake Clark National Park and Preserve area

Aerial views of Tuxedni Bay on the west side of Cook Inlet, Alaska.  This was during surveys for juvenile salmon distribution for the Anadromous Fish Catalog for the State of Alaska.

By
Alaska Science Center
Aerial view of the Lake Clark National Park and Preserve area

Aerial view of the Lake Clark National Park and Preserve area

Aerial view of the Lake Clark National Park and Preserve area

Aerial views of Tuxedni Bay on the west side of Cook Inlet, Alaska.  This was during surveys for juvenile salmon distribution for the Anadromous Fish Catalog for the State of Alaska.

By
Alaska Science Center
A tributary of Lake Clark, Alaska
A tributary of Lake Clark, Alaska
A tributary of Lake Clark, Alaska
A tributary of Lake Clark, Alaska

A tributary of Lake Clark, Alaska

A tributary of Lake Clark, Alaska

Aerial views of streams on the west side of Cook Inlet, Alaska.  This was during surveys for juvenile salmon distribution for the Anadromous Fish Catalog for the State of Alaska.

By
Alaska Science Center
A tributary of Lake Clark, Alaska

A tributary of Lake Clark, Alaska

A tributary of Lake Clark, Alaska

Aerial views of streams on the west side of Cook Inlet, Alaska.  This was during surveys for juvenile salmon distribution for the Anadromous Fish Catalog for the State of Alaska.

By
Alaska Science Center
Filter Total Items: 74

Linking permafrost to the abundance, biomass, and energy density of fish in Arctic headwater streams Linking permafrost to the abundance, biomass, and energy density of fish in Arctic headwater streams

Permafrost thaw alters groundwater flow, river hydrology, stream-catchment interactions, and the availability of carbon and nutrients in headwater streams. The impact of permafrost on watershed hydrology and biogeochemistry of headwater streams has been demonstrated, but there is little understanding of how permafrost influences fish in these ecosystems. We examined relations among...
Authors
Michael Carey, Joshua Koch, Jonathan O’Donnell, Brett Poulin, Christian Zimmerman
By
Alaska Science Center

Metal mobilization from thawing permafrost to aquatic ecosystems is driving rusting of Arctic streams Metal mobilization from thawing permafrost to aquatic ecosystems is driving rusting of Arctic streams

Climate change in the Arctic is altering watershed hydrologic processes and biogeochemistry. Here, we present an emergent threat to Arctic watersheds based on observations from 75 streams in Alaska’s Brooks Range that recently turned orange, reflecting increased loading of iron and toxic metals. Using remote sensing, we constrain the timing of stream discoloration to the last 10 years, a...
Authors
Jonathan O’Donnell, Michael Carey, Joshua Koch, Carson Baughman, Kenneth Hill, Christian Zimmerman, Patrick F. Sullivan, Roman Dial, Timothy J. Lyons, David Cooper, Brett A. Poulin
By
Alaska Science Center

Differential heat shock protein responses in two species of Pacific salmon and their utility in identifying heat stress Differential heat shock protein responses in two species of Pacific salmon and their utility in identifying heat stress

Rapid and accelerating warming of salmon habitat has the potential to lower productivity of Pacific salmon (Oncorhynchus species) populations. Heat stress biomarkers can indicate where warming is most likely affecting fish populations; however, we often lack clear classifications that separate individuals with and without heat stress needed to make these tools operational. We conducted a...
Authors
Vanessa von Biela, Amy Regish, Lizabeth Bowen, Ashley Stanek, Shannon Waters-Dynes, Michael Carey, Christian Zimmerman, Jonathon Gerken, Daniel Rinella, Stephen McCormick
By
Ecosystems Mission Area, Eastern Ecological Science Center, Western Ecological Research Center (WERC), Alaska Science Center

Rivers of Arctic North America Rivers of Arctic North America

This chapter describes the geomorphology, hydrology, chemistry, biodiversity, and ecology of rivers in the North American Arctic. The history, physiography, climate, and land use of the Arctic regions are also described. The chapter includes details on the Kobuk and Colville rivers in Alaska, the Thelon and Kazan rivers in the central Canadian Arctic, Koroc River and Nakvak Brook in the...
Authors
Jennifer Lento, Sarah Laske, Eric Luiker, Joseph Culp, Leslie Jones, Christian Zimmerman, Wendy Monk
By
Alaska Science Center

Elodea mediates juvenile salmon growth by altering physical structure in freshwater habitats Elodea mediates juvenile salmon growth by altering physical structure in freshwater habitats

Invasive species introductions in high latitudes are accelerating and elevating the need to address questions of their effects on Subarctic and Arctic ecosystems. As a driver of ecosystem function, submerged aquatic vegetation is one of the most deleterious biological invasions to aquatic food webs. The aquatic plant Elodea spp. has potential to be a widespread invader to Arctic and...
Authors
Michael Carey, Gordon Reeves, Suresh Sethi, Theresa Tanner, Daniel Young, Krista Bartz, Christian Zimmerman
By
Ecosystems Mission Area, Alaska Science Center

Investigating effects of climate-induced changes in water temperature and diet on mercury concentrations in an Arctic freshwater forage fish Investigating effects of climate-induced changes in water temperature and diet on mercury concentrations in an Arctic freshwater forage fish

The amount of mercury (Hg) in Arctic lake food webs is, and will continue to be, affected by rapid, ongoing climate change. At warmer temperatures, fish require more energy to sustain growth; changes in their metabolic rates and consuming prey with potentially higher Hg concentrations could result in increased Hg accumulation. To examine the potential implications of climate warming on...
Authors
Sarah Laske, Samantha Burke, Michael Carey, Heidi Swanson, Christian Zimmerman
By
Alaska Science Center

Lake trout (Salvelinus namaycush) otoliths indicate effects of climate and lake morphology on growth patterns in Arctic lakes Lake trout (Salvelinus namaycush) otoliths indicate effects of climate and lake morphology on growth patterns in Arctic lakes

Climate change is occurring rapidly in the Arctic, and an improved understanding of the response of aquatic biota and ecosystems will be important for this data-limited region. Here, we applied biochronology techniques and mixed-effects modelling to assess relationships among growth increments found on lake trout (Salvelinus namaycush) otoliths (N = 49) captured from 13 lakes on the...
Authors
Eric Torvinen, Jeffrey Falke, Christopher Arp, Benjamin Jones, Matthew Whitman, Christian Zimmerman
By
Ecosystems Mission Area, Cooperative Research Units, Alaska Science Center

Fish ear stones offer climate change clues in Alaska's lakes Fish ear stones offer climate change clues in Alaska's lakes

Otoliths, also known as ear stones, are small body parts that help fish with hearing and balance. Like tree rings, otoliths form one light and one dark band per year, creating rings. These rings can be measured to understand fish growth. The wider the ring, the greater the growth. In our study, we used otoliths to understand how one fish species—lake trout—responds to rising temperature...
Authors
Krista Bartz, Vanessa von Biela, Bryan Black, Daniel Young, Peter van der Sleen, Christian Zimmerman
By
Alaska Science Center

First juvenile Chum Salmon confirms successful reproduction for Pacific salmon in the North American Arctic First juvenile Chum Salmon confirms successful reproduction for Pacific salmon in the North American Arctic

The distributional extent of Pacific salmon Oncorhynchus spp. in the North American Arctic is unresolved. While adult Pacific salmon have a recurring presence across the Alaskan North Slope and into the Canadian Arctic, it is uncertain if these fish are part of established Arctic populations, vagrants from outside sources reproducing unsuccessfully, or both. Here we present the first...
Authors
Karen Dunmall, Darcy McNicholl, Christian Zimmerman, Sara Gilk-Baumer, Sean Burril, Vanessa von Biela
By
Ecosystems Mission Area, Alaska Science Center

Premature mortality observations among Alaska’s Pacific salmon during record heat and drought in 2019 Premature mortality observations among Alaska’s Pacific salmon during record heat and drought in 2019

Widespread mortality of Pacific salmon Oncorhynchus spp. returning to spawn in Alaska coincided with record-breaking air temperatures and prolonged drought in summer 2019. Extreme environmental conditions are expected to happen more frequently with rapid climate change and challenge the notion that Alaska could indefinitely provide abundant, cool freshwater habitat for Pacific salmon. A...
Authors
Vanessa von Biela, Christopher Sergeant, Michael Carey, Zachary Liller, Charles Russell, Stephanie Quinn-Davidson, Peter S. Rand, P. A. H. Westley, Christian Zimmerman
By
Alaska Science Center

Circumpolar patterns of Arctic freshwater fish biodiversity: A baseline for monitoring Circumpolar patterns of Arctic freshwater fish biodiversity: A baseline for monitoring

Climate change, biological invasions, and anthropogenic disturbance pose a threat to the biodiversity and function of Arctic freshwater ecosystems. Understanding potential changes in fish species distribution and richness is necessary, given the great importance of fish to the function of freshwater ecosystems and as a resource to humans. However, information gaps limit large-scale...
Authors
Sarah Laske, Per-Arne Amundsen, Kirsten Christoffersen, Jaakko Erkinaro, Gudni Gudbergsson, Brian Hayden, Jani Heino, Kerstin Holmgren, Kimmo Kahilainen, Jennifer Lento, Panu Orell, Johan Ostergren, Michael Power, Ruslan Rafikov, Atso Romakkaniemi, Martin-A. Svenning, Heidi Swanson, Matthew Whitman, Christian Zimmerman
By
Ecosystems Mission Area, Alaska Science Center

Diversity of diatoms, benthic macroinvertebrates, and fish varies in response to different environmental correlates in Arctic rivers across North America Diversity of diatoms, benthic macroinvertebrates, and fish varies in response to different environmental correlates in Arctic rivers across North America

Climate change poses a significant threat to Arctic freshwater biodiversity, but impacts depend upon the strength of organism response to climate‐related drivers. Currently, there is insufficient knowledge about Arctic freshwater biodiversity patterns to guide assessment, prediction, and management of biodiversity change.As part of the Circumpolar Biodiversity Monitoring Program's first...
Authors
Jennifer Lento, Sarah Laske, Isabelle Lavoie, Daniel Bogan, Bob Brua, Stephane Campeau, Krista Chin, Joseph Culp, Brianna Levenstein, Michael Power, Emilie Saulnier-Talbot, Rebecca Shaftel, Heidi Swanson, Matthew Whitman, Christian Zimmerman
By
Ecosystems Mission Area, Alaska Science Center
Was this page helpful?