Climate Change Already Having Profound Impacts on Lakes in Europe


Lake Maggiore in Italy is an example of a lake already feeling the effects of climate change. In the 1990s, the population of coldwater fish species such as trout and whitefish declined dramatically. Photo Credit: mbdortmund, Wikimedia Commons.
For perspective on how climate change is affecting lakes, those of us here in the U.S. can just look across the pond, where scientists and the agencies involved in meeting the European Union’s Water Framework Directive have amassed an impressive body of research on the topic.

By Lisa BorreNational Geographic

Not only are extreme weather events such as droughts and intense rainstorms becoming more common, climate warming is leading to increased algal growth and more frequent toxic algal blooms. It also affects the entire aquatic food web, including the number, size and distribution of freshwater fish species, according to the latest research.

New evidence from studies in Europe shows that a warming climate, in particular, is already having a profound impact on lakes, according to Dr. Erik Jeppesen at Aarhus University in Denmark. As I have noted in earlier posts, this is an important issue because other studies show that lake temperatures are on the rise throughout the world.

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