Approx 100MT annual catch Approx 1 part in 100000 is iron Therefore need to replace 1000t iron pa into ocean ecosystems. But iron isn't a limiting nutrient everywhere, so perhaps far less.
Should boats be tipping NPK fertiliser over the side, too? Far larger volumes are required. Marine reserves are likely a better way to protect ecosystems. A On 22 Jun 2014 10:18, "Keith Henson" <hkeithhen...@gmail.com> wrote: > It's a shame this business got mixed up with geoengineering because it > is something that should be done on it's own merits. > > Humans fish the seas. As a result they remove vast amounts of > elements from the materials circulating in the ocean biosphere. We > are going to fish, and remove elements, particularly iron, from the > sea. We damn well should put it back. > > When a ship comes in with a load of fish and an estimated amount of > iron in the fish, the next trip out they should be required to take an > equivalent amount of iron out with them. Or buy credits from someone > who does this as a business. > > It's not like it would be a significant cost burden on fishermen. And > if it has positive effects on the catch, they should be overjoyed to > do it. > > Any minor effects it has on CO2 is just a fortunate happenstance. > > Keith Henson > > -- > You received this message because you are subscribed to the Google Groups > "geoengineering" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to geoengineering+unsubscr...@googlegroups.com. > To post to this group, send email to geoengineering@googlegroups.com. > Visit this group at http://groups.google.com/group/geoengineering. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to geoengineering+unsubscr...@googlegroups.com. To post to this group, send email to geoengineering@googlegroups.com. Visit this group at http://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/d/optout.
