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Posts Tagged ‘ocean acidification’

New Ocean Scorecard Gives World a 60%

Posted by Ram Kumar Shrestha on August 29, 2012


We live in a world obsessed with numbers – college rankings, baseball scores, exam results – and now we have one to tell us what’s happening to our oceans.

According to a study outlining the first results of the Ocean Health Index, recently founded by Conservation International and other organizations, the entire world’s oceans score 60 out of a hundred for their ability to deliver benefits to both nature and people. Individual country scores range from 36 to 86, with the U.S. chalking up a 63 and China following behind with a 53. A paltry 5 percent of countries hit the 70 point mark, while 32 percent lingered below 50. And, as might be expected, developed countries generally did better than developing countries, thanks to their more robust economies and greater capacity for environmental stewardship (though Poland and Singapore scored a relatively pitiful 42 and 48 respectively).

(MORE: Why Romney’s Energy Independence Pledge Is Half-Baked)

That’s a lot of numbers, but the science behind them is fascinating, largely because the architects of the Ocean Health Index have made huge efforts to account for the world’s astonishing complexity in their calculations. First of all, the index doesn’t simply lump together science-driven metrics of ocean health like water pH and carbon dioxide levels. Rather, it zones in on ten vital ways in which nature and humans rely on the seas, including biodiversity, food, tourism, and even “sense of place,” and then examines how well the oceans are able to deliver those things. To do this, the researchers assign a score to each of their ten measures for the oceans they examine, and find the index score based on the weighted sum of these individual scores. They make sure to include in their ratings the status of each measure as it stands right now as well as what it might be in the future based on a mathematical model. Read the rest of this entry »

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