Michael P Carey, Ph.D.

Beaver dam and lodge on the Wrench Creek, Noatak National Preserve

Beaver dam complex and lodge at the confluence of Wrench Creek and Kelly River, Noatak National Preserve

Measuring temperature and dissolved oxygen in impounded water of beaver dam on the Wrench Creek, Noatak National Preserve.

Arctic grayling (Thymallus arcticus) and Dolly varden (Salvelinus malma)  from impounded water of beaver dam on the Wrench Creek, Noatak National Preserve. 

Gnawed tree from beaver activity on tributary of the Agashashok River, Noatak National Preserve

Beaver dam crossing mainstem of Rabbit Creek near the headwaters, Cape Krusenstern National Monument

Beaver dams on Rabbit Creek, Cape Krusenstern National Monument

Measuring the amount of water impounded by a beaver dam on Rabbit Creek, Cape Krusenstern National Monument. 

Beaver swimming near dam on Rabbit Creek, Cape Krusenstern National Monument

Beaver dams on Rabbit Creek, Cape Krusenstern National Monument

Impounded water above beaver dam on the Wrench Creek, Noatak National Preserve

Beaver lodge and drained impoundment in tributary of the Noatak River, Noatak National Preserve

Beaver dam and lodge on the Ahaliknak Creek, Noatak National Preserve

Impacts of iron mobilization in a stream tributary of the Akillik River located in Kobuk Valley National Park, Alaska. These images were taken two years apart. The clear picture was taken in June 2016 and the orange picture was August 2018. 

Two scientists in kayaks next to a floating limnocorral on McKinley Lake, near Cordova, Alaska for Elodea spp. experiment. This experiment is studying the effect of the invasive species Elodea spp. on aquatic ecosystems. Disclaimer statement: Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S.

USGS and NPS scientists measuring discharge and collecting water chemistry in small tributary to the Cutler River in the early summer. This work is part of the Hydro-Ecology of Arctic Thawing (HEAT): Hydrology project that takes place in the Arctic Netwo

Sampling a stream from the Akilik River drainage in the Boreal-Arctic transition of the Brooks Range in Noatak National Park and Preserve, Kobuk Valley National Park. This is part of the Hydro-Ecoloy of Arctic Thawing (HEAT) project.

Sampling the Imelyak River in the Boreal-Arctic transition of the Brooks Range in Noatak National Park and Preserve, Kobuk Valley National Park. This is part of the Hydro-Ecology of Arctic Thawing (HEAT) project.

Small arctic grayling hugging the bottom in the Imelyak River in the Brooks Range. This is part of the Hydro-Ecoloy of Arctic Thawing (HEAT) project.

Limnocorral on McKinley Lake, near Cordova, Alaska for Elodea spp. experiment. This experiment is studying the effect of the invasive species Elodea spp. on aquatic ecosystems. Disclaimer statement: Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Two limnocorrals on McKinley Lake, near Cordova, Alaska for Elodea spp. experiment. This experiment is studying the effect of the invasive species Elodea spp. on aquatic ecosystems. Disclaimer statement: Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.