Images

Coastal erosion, Baldwin Peninsula.

Patterned ground along the Noatak River, Noatak National Preserve.  Dominant ecotypes include Riverine Loamy Wet Circumacidic Wet Sedge Meadow, Riverine Loamy Moist Circumacidic Birch-Willow Low Shrub, Riverine Gravelly Moist Circumalkaline Barrens, and Riverine Gravelly Dry Alkaline Dryas Dwarf Shrub. 

Recent tundra fire scar, Noatak National Preserve.

Ancient shorelines, Cape Krusenstern National Monument.

Recovered river meanders along Kobuk River, Kobuk Valley National Park.  Dominant ecotypes include Riverine Water, Riverine Loamy Moist Alder or Willow Tall Shrub, Riverine Gravelly-loamy Moist Circumalkaline White Spruce-Willow Forest, and Riverine Loamy Wet Circumacidic Wet Sedge Meadow. 

South shore, Walker Lake, Gates of the Arctic National Park and Preserve.  Dominant ecotypes include Upland Moist Dwarf Birch-Ericaceous-Willow Low Shrub, Upland Rocky-loamy Moist Circumacidic Alder-Willow Tall Shrub, and Upland Loamy Moist Circumalkaline Willow Low Shrub. 

Flooded thermokarst area with high escarpment, Bering Land Bridge National Preserve, Seward Peninsula.

Coastal river sand bar, Bering Land Bridge National Preserve, Seward Peninsula.  Dominant ecotypes include Coastal Barrens, Coastal Loamy Wet Brackish Sedge-Grass Meadow, and Lowland Moist Sedge-Dryas Meadow. 

Thermokarst lake and river meanders, Seward Peninsula.  Dominant ecotypes include Lowland Lake, Lowland Organic-rich Wet Circumacidic Willow Low Shrub, Upland Organic-rich Moist Acidic Dwarf Birch-Tussock Shrub, and Upland Rocky-Loamy Moist Alkaline Sedge-Dryas Meadow. 

Mayumi Arimitsu and Sarah Schoen setting a beach seine from an inflatable boat in Prince William Sound. This was an experiment to see if a beach seine could be used as a purse seine that could catch Pacific sand lance.

A closer view of Mayumi Arimitsu and Sarah Schoen setting a small purse seine from an inflatable boat in Prince William Sound

Mayumi Arimitsu setting a beach seine as purse seine from an inflatable boat in Prince William Sound. This was an experiment to see if a beach seine could be used to catch Pacific sand lance.

A beach seine is being pulled in to the boat. This net is being used as a purse seine in an experiment to see if it can be used to capture Pacific sand lance.

A beach seine is being pulled farther in to the boat. This net is being used as a purse seine in an experiment to see if it can be used to capture Pacific sand lance.

Sea ice in the Chukchi Sea in 2013.

Scientists preparing the CTD for deployment for habitat sampling

Walrus reflections in the water.  Taken from a USGS research cruise in the Chukchi Sea,

Pacific walrus resting on ice in the Chukchi Sea, Alaska. This field work was part a satellite tagging expedition in the northwest Chukchi Sea to understand movement patterns, foraging behaviors of walruses and important summering habitats.

Mowed grasses interspersed with low shrubs in coastal dunes of the Ki’i Unit in James Campbell National Wildlife Refuge on Oahu, Hawaii

Trail made by cattle through hillside Heracleum maximum-Geranium erianthum forb meadow on Chirikof Island, Alaska.

Ephemeral wet meadow surrounded by mowed vegetation in the Punamano Unit of the James Campbell National Wildlife Refuge on Oahu, Hawaii