High Arctic Lake Hazen Ecosystem: Small Temp Rise Brings Vast Regional Changes


Alex Wierbinski's picture

By Alex Wierbinski - Posted on 10 April 2018

 

Ice & Water News
High Arctic Lake Ecosystem

Small Temp Rise Brings Vast Regional Changes

1C rise in atmospheric temperature causes rapid changes to world's largest High Arctic lake,
University of Alberta, April 6, 2018.

"...drastic changes over the past decade to the world's largest High Arctic lake."

"... from glacial melt to the declining lake ice to changes in lake ecology, the results from Lake Hazen on Ellesmere Island in Canada are alarming."

"...a temperature increase of just one degree over a series of warm summers, which has set off a chain of events disrupting the entire ecology of the lake. This increase of just one degree in atmospheric temperature led to increased solar radiation. The increased solar radiation has led to a significant increase in snowpack temperature, which in turn led to a whole series of shifts in the lake system."

"The domino effect of changes resulted in not only algal blooms and detrimental changes to the Arctic Char fish population, but also points to a near certain future of summer ice-free conditions."

"... an unprecedented shift versus the previous three centuries, not only painting a bleak picture for the future of the of the lake and its catchment, but also challenge scientists' expectations of how such a large system could respond so rapidly to a one-degree rise."

 

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Climate change news water ice Lake Hazen altered under 1 degree change

 

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