Check out the recently published ocean acidification theme section in Marine Ecology Progress Series (open access). Edited by Phillip Boyd NIWA, the section comprises 8 papers considering various impacts of OA in the context of Multiple Environmental Drivers (MED’s). http://www.int-res.com/articles/theme/m470_ThemeSection.pdf

Direct effects of ocean acidification (red) and ocean warming (blue) on Fe chemistry in seawater from Hoffmann et al.
Paper Titles
1/ Understanding the responses of ocean biota to a complex matrix of cumulative anthropogenic change Boyd PW, Hutchins DA 2/ Environmental controls on coccolithophore calcification Raven JA, Crawfurd K 3/ Responses of marine primary producers to interactions between ocean acidification, solar radiation,and warming. Gao K, Helbling EW, Häder DP, Hutchins DA 4/ Influence of ocean warming and acidification on trace metal biogeochemistry. Hoffmann LJ, Breitbak E, Boyd PW, Hunter KA 5/ Global change and the future of harmful algal blooms in the ocean. Fu FX, Tatters AO, Hutchins DA [Does this mean we will have more of these???? http://www.heraldsun.com.au/news/national/red-tide-of-algae-strikes-10-more-sydney-beaches/story-fndo317g-1226526090204 ] 6/ Phytoplankton niches, traits and eco-evolutionary responses to global environmental change. Litchman E, Edwards KF, Klausmeier CA,Thomas MK 7/ The biological pump in a high CO2 world. Passow U, Carlson CA 8/ Integrating climate-related stressor effects on marine organisms: unifying principles linking molecule to ecosystem-level changes. Pörtner HO