In Context: 5 Web Perspectives On A Story In The News

Lakes act as indicators of climate change

(Canada.com) Researchers from Canada and the US have analyzed 200,000 year-old lake sediments and concluded that humans have influenced climate change. The researchers gathered data from a number of Baffin Island area lakes. The researchers propose that the lakes should be cooling but are warming as a result of global warming. Some species of tiny insects that had adapted to cold temperature water are now disappearing as lakes warm, the researchers say.

1.

Lake Superior affected by climate change

Star Tribune - daily paper from Minneapolis-St. Paul, Minnesota
This article discusses how the level of ice cover on the lake in the winter has shrunk by 50 per cent in comparison to 100 years ago. Also, water temperatures have increased 2 degrees Fahrenheit per decade over the past 30 years. This is proposed to be caused by a lack of ice cover that when present reflects sunlight back into space so that the lake doesn't heat up.

2.

Climate change impacting lakes in Antarctic

Science Magazine - a science magazine and website covering a wide array of topics
This report discusses how changes to lake temperatures can affect the nutrient levels and ecological makeup of lakes. Antarctic lakes are early indicators of climate change as snow and ice cover influence water temperatures and levels. Another issued raised was that as ice and snow cover diminish, microorganisms that receive more light can become overpopulated and throw off the natural ecological balance of lakes.

3.

China suffers drinking water shortage as lakes diminish

China Daily -paper that provides coverage of news and events in China
This article reports that climate change is directly affecting drinking water for residents who live around Poyang Lake in China. Although some lake level fluctuations are normal, Poyang Lake has experienced an extreme drought and diminished from 3,000 square kilometers to 50 square kilometers. The drought is expected to last 10 years according to scientists.

4.

Pristine lake won’t return to form

Inter Press Service News Agency - global news agency
This article looks at how a lake in Germany that supplied water to cool a nuclear power plant has still not recovered after the plant closed down 20 years ago. Water that was used in the power plant was returned to the lack at a much warmer temperature than when it was pumped out of the lake. Scientists now say that global warming is perpetuating the negative affects that the power plant had on the lake. These affects include rapid growth of microorganisms that are damaging the lakes natural ecosystem. Also, warm water temperatures are killing fish and their eggs that need to be at a certain temperature in order to survive.

5.

Great Lakes water levels diminishing

Science Daily - science news website offering perspectives on global warming
This article is a summary about Michigan researchers who have concluded that global warming is affecting water levels in the Great Lakes. Over 100 years of data was used to make the conclusion. The Great Lakes supply drinking water to 40 million U.S. and Canadian citizens.

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