Consequences from Antarctica Climate Change
In the scientific paper, “The Impact of a Large-scale Climate Event on Antarctic Ecosystem Processes,” published in a special section Thursday in Bioscience, Fountain and his team detail the climate event and summarize the cascading ecological consequences over the last 15 years caused by a single season of intense melting in Antarctica between 2001 and 2002.
Taylor Valley is one the McMurdo Dry Valleys. The landscape is composed of expanses of a sandy, gravelly soil, ice-covered lakes (at right), and glaciers flowing from the local mountains (center background).
Credit: Andrew Fountain
Stationed in East Antarctica’s McMurdo Dry Valleys — a polar desert that’s among the driest places on Earth — Fountain and his research team studied the effects of massive flooding caused by the glaciers that melted when air temperatures suddenly warmed to 39 degrees Fahrenheit. Flooding streams eroded, lake ice thinned, lake levels rose, and water reached new places across the barren landscape.
Garwood Valley is one of the McMurdo Dry Valleys. This photo shows the stark boundary between a glacier and the valley floor. The pile of ice is from a calving event when the ice broke off the front of the glacier.
The extreme climate shift at Palmer during 2001 and 2002 caused freezing and melting at the edge of the peninsula, resulting in increased algal bloom and Antarctic krill, a devastating decline in the population of Adelie penguins, and an increase in the populations of gentoo and chinstrap penguins.
Contacts and sources:
Portland State University
Source: http://www.ineffableisland.com/2016/10/consequences-from-antarctica-climate.html
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