“Increasingly corrosive waters” affecting oyster farming? But the daily pH variation in tidal areas is naturally large.
[Researcher Francisco] Chavez is measuring pH in the intertidal because, as he points out, “These organisms are seeing large swings of pH on a daily basis.” Daily variations of pH can occur from photosynthesis and from animals respiring and releasing carbon dioxide. The pH also fluctuates when upwelled water reaches the intertidal.
In other words, tidal biota don’t live at an average pH, but in a naturally fluctuating range of pH values. Moreover, to the extent pH affects survival, natural selection will enable pH-hardier biota to thrive.
The left apparently only embraces Darwin when it comes to beating up religious conservatives. [Washington Post]