Seattle times, Forbes, NYTimes: Did a surge of acidified ocean kill northwest’s oysters? Study says yes.
Thursday, April 12th, 2012
Several years ago reports circulated on massive die offs of farmed oysters in Oregon and Washington with the prime suspect a change in pH – level of acidity – due to an unusual upwelling of cold deep water into coastal shallows. Now a set of experiments studying in detail a hatchery’s success as waters from various sources circulated through it delivers a verdict: guilty as charged.
While the specific reasons that deep water off the Pacific Northwest might be less alkaline than is typical and are prone to occasionally surge near shore may be a regional peculiarity, the slowly changing acidity of the oceans in general is what makes the study news. The levels that did mischief to oysters there are not unlike what some project for the broader ocean as mankind’s CO2 keeps seeping into the seas – and a lot more shellfish and other sea life aside from oysters, so they say, could suffer.
The study, largely by researchers affiliated with Oregon State University which boosted it with a press release, is in the journal Limnology and Oceanography. It was immediately hailed by an activist orgnanization, the Center for Biological Diversity, which issued its own press release (in Grist below).
It gets good coverage, with a narrative on top reporting the issue’s history, at the Seattle Times by its environment reporter Craig Welch. REad this and you get a good sense of exactly how the experiments were done and why the conclusion appears so solid.
Other stories:
- AP – Jeff Barnard: Study blames ocean CO2 for oyster declines ; Barnard wades deeper into the specifics, even explaining how a juvenile oyster’s transition from aragonite to calcite as the basis of shell growth seems to get bollixed by a lower than usual pH. All Barnard’s quoted sources are authors of the paper.
- NYTimes Green blog – Leslie Kaufman: Study Links Raised Carbon Dioxide Levels to Oyster Die-Offs ; Her story transitons quickly from the basics of the science to lawsuits and petitions filed by the Ctr for Biological Diversity to get federal agencies to make ocean acidification an action priority.
- Oregon Public Broadcasting/NPR – Cassandra Profita: Oyster Decline Linked to Ocean Acidification ;
And so on, which leads us to….
- Forbes – Larry Bell: Is Your SUV Killing Ocean Coral Reefs? ; This popped up in searching for coverage of the oysters of Oregon. Bell is a professor, a real scholar. But his field is space architecture. He wrote a book, Climate of Corruption, calling CO2-caused anthropogenic global warming a hoax. And this piece is a fine example of a column that appears to have the most research behind it, full of citations explaining in selected passages from published literature why the oceans won’t acidify on our account, and that nobody knows the effects if they do. Here’s why it is not journalism: he quotes no authority in the field as saying worries over acidification are bogus. We have only his own non-expert selected skein of literature snippets to go by. This, in other words, appears to be a well-dressed example of a stated polemic point that on closer examination has no reliable backing to it at all.
Grist for the Mill: Oregon State University Press Release , Ctr for Biological Diversity Press Release ;
- Charlie Petit