Global Warming’s Effect on Whales And Dolphins

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Whales, dolphins and porpoises are facing increasing threats from climate change. A report published by the World Wildlife Fund and the Whale and Dolphin Conservation Society, released in advance of the 59th meeting of the International Whaling Commission, finds many populations to be vulnerable to global warming. Cetaceans that rely on polar waters-–belugas, narwhals, and bowhead whales-–are likely to be dramatically affected by the reduction of sea ice. Less sea ice will allow more commercial shipping, oil, gas and mining exploration and development, and military activities in previously untouched areas.

Other impacts of global warming include less habitat for river dolphins, the acidification of the oceans as they absorb CO2, more cetacean disease epidemics, and lower reproductive success and survival rates. Climate change could also be the nail in the coffin for the last 300 or so endangered North Atlantic right whales. The survival of their calves has been directly related to the effects of climate variability on prey abundance.

Check out why we need all these species. –JULIA WHITTY

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Clara Jeffery, Editor-in-Chief

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