16 Feb '15, 4am

Warming could bring sharks to Antarctica with devastating ecological consequences [7 yrs ago]

Warming could bring sharks to Antarctica with devastating ecological consequences [7 yrs ago]

The Antarctic would still be too cold for Great White Sharks. Global warming could make the waters around Antarctica hospitable to sharks for the first time in 40 million years. Their return could have devastating ecological consequences report researchers from the University of Rhode Island. Analyzing the physiological adaptations and metabolism of sharks and other predators, Cheryl Wilga and Brad Seibel found that an increase of just a few degrees Celsius could make Antarctic waters habitable for Benthic sharks, species that live on the seafloor and swim very little. Ocean-going sharks, which have a high metabolism rate because they must swim constantly to aerate their gills, would not survive in the cold waters around Antarctica. Still Wilga and Seibel say that because "they cannot swim great distances and do not produce a larval stage capable of wide dispersal, it is u...

Full article: http://news.mongabay.com/2008/0215-sharks.html?tw!ttr=yes

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