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In fact, bottom-dwellers transfer more than a million tonnes of CO2 a year from surface waters of the UK and Ireland, helpfully storing between €8 million and €14 million ($10.9 million and $19 million) a year in carbon credit value, says a new study (paywall) by a University of Southampton team. Killing too many of those fishes, as well as the ones they feed on, risks damaging the ocean’s ability to store carbon, leaving more CO2 in the atmosphere.
This lead Martin to speculate that increased iron concentrations in the oceans could partly explain past ice ages. This experiment was followed up by a much larger field experiment (IRONEX I) where 445 kg of iron was added to a patch of ocean near the Galápagos Islands. The levels of phytoplankton increased three times in the area where the iron had been added. The success of this experiment and others has led to proposals to use this technique to remove carbon dioxide from the atmosphere on a commercial basis.
Sperm whales act as agents of iron fertilisation when they transport iron from the deep ocean to the surface during prey consumption and defecation. Sperm whales have been shown to increase the levels of primary production and carbon export to the deep ocean by depositing iron rich faeces into surface waters of the Southern Ocean. The iron rich faeces causes phytoplankton to grow and take up more carbon from the atmosphere. When the phytoplankton dies, it sinks to the deep ocean and takes the atmospheric carbon with it. By reducing the abundance of sperm whales in the Southern Ocean, whaling has resulted in an extra 2 million tonnes of carbon remaining in the atmosphere each year.
originally posted by: Necrose
global warming is a hoax.
Salt-Water Fish Extinction Seen By 2048
They released data showing that 90% of fish and other ocean life have perished in the last 100 years. 18% of ocean species have been reduced in number by more than 90% with 7% of fish species now extinct.
Even more startling is the projection that, by the year 2048, all the major economic fish species, indeed most higher forms of sea life, will be completely extinct. No more fish will be left to eat. With the annihilation of life in the 70+% of the world that is ocean, the global ocean ecosystems will begin to break down. Many human communities also depend on seafood and scientists fear that the mass extinction will trigger a cascade reaction among all the food chains on the planet.
originally posted by: Plugin
They released data showing that 90% of fish and other ocean life have perished in the last 100 years.