Emilia Grzesik BNZ LTER

Emilia and her field tech, Elliot, in the field sampling black spruce forest fuel loads at Bonanza Creek LTER in Alaska.

BNZ field notes _ by Michelle Mack

Terry Chapin’s hand drawn map of the 1988 field sites. Sampling these sites this year became much faster with the aid of GPS coordinates and digital maps.

Mel Boyd at BNZ_photo by Xanthe Walker

Mel Boyd measures the remnants of burned shrubs along a transect line across the Shovel Creek fire scar near Fairbanks, Alaska.

Smoke from fire BNZ LTER

Smoke from a forest fire in an Alaskan boreal forest near Bonanza Creek LTER

browsing by vertebrate herbivores

Browsing by snowshoe hares and moose have dramatic top-down influences on vegetation composition, successional dynamics, and ecosystem function throughout interior Alaska.

longer snow free season

Recent models indicate that lengthening of the snow-free season and associated declines in surface albedo constitutes the largest positive feedback to climate warming in the boreal forest.

thawing permafrost

Increases in air temperatures and depth of insulating snow cover during winter are accelerating the rate of permafrost thaw. In areas of ice-rich permafrost, widespread thermokarst is having significant consequences for biogeochemical cycling and surface hydrology.