National Geographic reports: Atlantic cod, the storied catch of New England’s fishing industry, have little in common with bottom-dwelling rock crab, which are perhaps best known for swiping bait from lobster traps. But a largely unheralded byproduct of climate change–loss of oxygen in the ocean–will hit both dramatically by limiting where they can live, according to a new study published Thursday.

The oxygen losses accompanying global warming could reduce by 20 percent the amount of ocean suitable for cod and crab by the end of the century, according to the study in the journal Science.

The new research suggests this oxygen loss may shift and shrink marine habitats for a multitude of species globally, potentially upending marine food webs far more substantially than previously thought. [Continue reading…]