Images

Glacier Creek sonar

Pacific Golden-Plover on the shore near Big Creek, Alaska.

Black-bellied Plover on the mud shore of Big Creek, Alaska.

A small stream meanders through ice-rich polygonal ground in the Cutler River Basin, Alaska. This work is part of the Hydro-Ecology of Arctic Thawing (HEAT): Hydrology project that takes place in the Arctic Network Parks because they lie in a region that

Common Murres in a colony in Cook Inlet, Alaska in 2017

Four Common Murres sitting on rocks at breeding colony on Gull Island in Kachemak Bay, Alaska. One is sitting on an egg.

Common Murres at their breeding colony on Gull Island, Kachemak Bay, Alaska. One murre looking at camera.

Black-legged Kittiwakes in a colony in Cook Inlet, Alaska. One bird on a nest.

Common Murres in their colony in Cook Inlet, Alaska

Common Murres at their breeding colony on Gull Island, Kachemak Bay, Alaska. Four murres have bills open. One sitting on egg.

Image of the juvenile Chum salmon (Oncorhynchus keta) that first confirmed successful reproduction of Pacific salmon in the North American Arctic. This fish was captured on  August 10, 2017, in Jago Lagoon, Arctic National Wildlife Refuge, Beaufort Sea, Alaska, U.S.A.

Photo of Herring and Glaucous gulls at the Bethel Landfill, Alaska.     

Biologists identify species, count, measure length, and release thousands of fish each year to understand how fish use nearshore habitats.

An underwater image of fish captured by a fyke net near Kaktovik, Alaska, Beaufort Sea, USA. The small silver fish with dark backs are young-of-year (age-0) Arctic cisco (Coregonus autumnalis) and the flatfish are Arctic flounder (Liopsetta glacialis).

A fyke net or fish trap used for continuous sampling of nearshore fish in shallow waters. Fish swimming along the beach are stopped by a small-mesh net that guides them in to one of these two underwater fish traps that are set side by side. Researchers visit nets at least once a day to identify, count, and release fish.

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.

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.

Young of year Arctic cisco (Coregonus autumnalis).

Underwater photo of young of year Arctic cisco

Flock of birds over Arey Island near Kaktovik on the coastline of the Beaufort Sea.

Hiking up a stream from the Akilik River drainage to set minnow traps for fish sampling. This is a stream type at the Boreal-Arctic transition of the Brooks Range, Noatak National Park and Preserve, Kobuk Valley National Park.