Instead, she spent the next hour describing why some people would like to fertilize the oceans by adding iron and why she disagrees. The increased number of plants, in turn, would pull more carbon dioxide from the atmosphere as part of the plants' normal growth. The second argument says that low amounts of nitrogen in some areas of the ocean limit the amount of fish. Fertilizing the ocean with iron and phosphate, proponents believe, would increase the amount of algae that can turn nitrogen gas from the air into a usable form for marine creatures.
More nitrogen means more fish.
Dr. Chisholm, the McAfee Professor of Engineering in biology and civil and environmental engineering, gave several reasons why she disagrees with both arguments. For example, fertilization could cause dramatic changes in the food web structure. Fertilizing to increase fish production also has major potential drawbacks. If you're asking where to put it, you're asking the wrong question. We should focus on decreasing emissions of carbon dioxide into the atmosphere.