World's Lakes Are In Hot Water
Climate change is warming lakes much faster than anticipated
The study by Dr. Sapna Sharma, an Assistant Professor in the Department of Biology at York University in Toronto, and colleagues, looked at surface water temperatures of 235 lakes around the world, including the Great Lakes. This represents about one-half of the global fresh water supply. In the years 1985 to 2009, they found that fresh water has warmed an average of .34 degrees Celsius per decade, compared to .24 for the air temperature and .11 for oceans.
This makes fresh water lakes more susceptible to algal blooms, less hospitable to native fish, but more attractive to invasive species.