Friday Cocktail: THE OVERDOSE: Three Parts Dead Zone, One Part Mercury, Sprig of Carbon CaptureBy Julia Whitty
Mother Jones; April 17, 2009
Round 1: First a report from the Monterey Bay Aquarium Research Institute that low-oxygen dead zones in the ocean could expand significantly over the next century. We already know the number of dead zones is doubling every decade. We already know that climate change is exacerbating dead zones in two ways.
First, more rainfall in some areas leads to more agricultural fertilizers and manures running off into the sea and growing more dead zones—as in the Gulf of Mexico. Second, warming in other areas reduces prevailing winds that produce oceanic upwelling—as in the Oregon dead zone.
Now the MBARI research, published in the journal Science, suggests a third mechanism at work. As more CO2 dissolves from the atmosphere into the ocean, marine animals will need more oxygen to survive. In other words, a dead zone will get deader faster. This is in addition to the excess CO2 causing changes to the pH of seawater. You know, the ocean acidification threatening the very foundations of life.
Pour me another and let’s talk about the next round which might help solve the problems of this one.