Stimulating phytoplankton could backfire
By Summit Voice
One of the ideas that has surfaced most often is adding certain types of nutrients to the oceans to stimulate algae production in the hopes of reducing CO2. But new research shows that the law of unintended consequences always applies, perhaps even more so when experimenting with climate on a global scale.
The new study on the feeding habits of ocean microbes shows that the idea could backfire by disturbing the natural balance of ocean chemistry. After carefully studying diatoms, one type of plankton, the scientists determined that it is uses more iron that it needs for photosynthesis and storing the extra in its silica skeletons and shells. This reduces the amount of iron left over to support the carbon-eating plankton.
“Just like someone walking through a buffet line who takes the last two pieces of cake, even though they know they’ll only eat one, they’re hogging the food,” said Ellery Ingall, a professor at the Georgia Institute of Technology and co-lead author on this result. “Everyone else in line gets nothing; the person’s decision affects these other people.” Continue reading
Filed under: climate and weather, Environment, global warming | Tagged: climate, CO2, Geoengineering, Georgia Institute of Technology, Iron fertilization, National Science Foundation, ocean seeding, oceans, Southern Ocean, University of Georgia, Woods Hole Oceanographic Institution | 1 Comment »