Climate change is anticipated to affect ocean biodiversity and play a major role in future changes in the structure of marine communities. This is because marine species are directly impacted by changes in ocean temperature and acidity, which can alter their abundance, diversity, distribution, feeding patterns, development and breeding. Measurements of biodiversity are thus commonly used in studies that monitor and assess the effects of climate change on marine communities.  However, it is difficult for scientists to predict exactly how changes in ocean acidification and temperature will...