I continue to keep a close eye on developments in the various ongoing, high profile cases of apparent data fabrication in ecology. Retraction Watch has the news that Science has issued an Expression of Concern for Dixson et al. 2014. This was a high profile paper claiming to demonstrate strong deleterious effects of ocean acidification on fish behavior. The EoC is being issued in part thanks to Science’s own investigative reporting, which helped uncover evidence of apparent data fabrication.
Relatedly, Jeff Clements and colleagues just published a major new meta-analysis of effects of ocean acidification on fish behavior, revealing an absolutely massive decline effect. That is, early studies reported big effects, but subsequent studies have found basically squat. Further, those early studies reporting big effects are all by the same lab group, of which Danielle Dixson was a member. Drop the studies from that one lab group, and you’re left with studies that mostly report small or zero effects. Speaking as someone who just co-authored a paper that looks systematically for decline effects in 466 ecological meta-analyses, and mostly fails to find them (Costello & Fox, in press at Ecology), I can tell you that the decline effect in Clements et al. is enormous. I couldn’t find anything close to a comparable decline effect anywhere else in ecology. Nor do any of the other, weaker decline effects I found have such a strong association with the work of one lab group. Clements et al. is a great paper. It’s very thorough; they check, and reject, a bunch of alternative explanations for their results. Even if you’re not a behavioral ecologist, you should read it.