Just pulled this link from Smithsonian magazine about the impacts of iron on the environment and its possible impacts on ice ages.....an interesting read.

The next to the last article mentions the Haida Gwaii experiment.

"Meanwhile, the controversy over iron fertilization as a geoengineering approach rages on. As the vision of a climate-tweaking tool has waned, some companies have attempted to apply the idea to revitalize fisheries. In a highly controversial 2012 example, American businessman Russ George persuaded members of the Haida Nation to fund the dumping of roughly 100 tons of iron sulfate off the coast of Canada, fertilizing a 10,000-square-kilometer algae bloom. George sold the controversial project as a way to boost salmon populations and sequester carbon, but follow-up studies failed to find conclusive evidence that it worked."


https://www.smithsonianmag.com/science-n...ange-180973893/