Friday, December 25, 2015

Are we really “choking the ocean with plastic”? Tracing the creation of an eco-myth | Watts Up With That?

Are we really “choking the ocean with plastic”? Tracing the creation of an eco-myth | Watts Up With That?

Activists helped propagate the story by providing photographs of the Garbage Patch, usually photos of coastal areas (not the deep ocean) — often after a storm or other event washed debris from shore. The above photo was taken in Wakuya after the 2011 Tōhoku earthquake. The photo at the top is explained in “Lies You’ve Been Told About the Pacific Garbage Patch” by Annalee Newitz at iO9, May 2012.
“You’ve probably heard of the ‘Pacific garbage patch,’ also called the ‘trash vortex.’ It’s a region of the North Pacific ocean where the northern jet stream and the southern trade winds, moving opposite directions, create a vast, gently circling region of water called the North Pacific Gyre — and at its center, there are tons of plastic garbage. You may even have seen this picture of the garbage patch, above — right? Wrong.
“That image, widely mislabeled as a shot of the Pacific garbage patch, is actually from Manila harbor. And it’s just one of many misconceptions the public has about what’s really happening to plastics in the ocean. We talked with Scripps Institution marine biologist Miriam Goldstein, who has just completed a study of how plastic is changing the ecosystem in the North Pacific Gyre, about myths and realities of the Pacific garbage patch.
“‘That picture of the guy in the canoe has been following me around my whole career! I think it’s an example of media telephone, where somebody wanted something dramatic to illustrate their story — and then through the magic of the internet, the picture got mislabeled. We have never seen anything like that picture. I’ve never seen it personally, and we’ve never seen it on satellite.’”
Conclusions
Scientists have debunked the exaggerated stories about the Great Garbage Patch, but more people see the myth than the corrections. Meanwhile science continues.
The large amount of plastic waste in the oceans was first reported by Edward J. Carpenter and K. L. Smith Jr. in “Plastics on the Sargasso Sea Surface” (Science, 17 March 1972): “Their occurrence was widespread. … Most of the pieces were hard, white cylindrical pellets, about 0.25 to 0.5 cm {0.01 – .02″} in diameter…”. That debris accumulated in specific areas of the Pacific was predicted in a paper by Robert Day et al at a 1989 NOAA conference.

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