wdk posted the comment below in response to my post about Planktos dumping iron near the Galapagos and I thought it was worth posting for a couple of reasons.
First, I suspected that it was a generic form letter the company posts to blogs critical of their policy. A quick Google search confirmed my suspicions. You can find the same comment, pretty much word for word, after articles questioning Planktos's plans on RealClimate and on Grist.
Second, I'd like to respond to comments. Mine (in white) are below the comments from wdk (in grey).
Finally, the following sites provide more in-depth and scientific analyses of the plan to dump iron in the oceans than I can.
ETC Group
Blog about chemical and ecological effects of iron fertilization
Real Climate
As a Planktos member, would like to assure J that our initial pilot project will be conducted over 300 miles west of the Galapagos islands and will in no way affect that area. The Galapagos waters have their own coastal shelf iron sources and thus harbor one of the healthiest ecosystems in the Pacific. It is the open ocean or pelagic waters out to the west and north that are increasingly anemic and lifeless and in need of a little help.
While 300 miles from the coast of the Galapagos may seem like it's far enough to be a safe distance, the ocean is a highly interconnected system. Oil from the Exxon Valdez spill traveled over 600 miles. Admittedly, oil, which floats on the surface of water and is more susceptible to being blown by wind, is not perfectly analagous to iron. But the oil spill was about 11 million gallons of oil (roughly 37,400 tons, converted here), where Planktos is planning to dump several hundred thousand tons (see below).
Even if the iron doesn't make it to the Galapagos ecosystem, the ecosystem where the dumping occurs is still valuable and not some giant lab to test out what is as of yet an unproven theory. Eighteen years after the Exxon Valdez, the damage still hasn't been completely repaired. I'm afraid to speculate how long it would take the ocean to recover from dumping several hundred thousand tons of iron into it. As someone who has done research in the Galapagos and witnessed firsthand the rare biodiversity and untouched beauty of the area, I'm even more afraid that damage to it would be irreversible.
The big story missed by both reporters and commentators alike on this subject thus far is that plankton restoration is not just about carbon credit economics or the threat of global warming. It's about an already ongoing catastrophic die-off in the sea. The establishment science community studies cited below are only a sample of recent research indicating that the ocean phytoplankton which produce most of the planet's oxygen, sequester an equal measure of its CO2 and feed every higher form of ocean life are disappearing at a shocking rate. According to NASA we have lost 6~12% of these vital plants globally just since 1980 and according to Behrenfeld's 12/06 Nature report there are now 50% die-offs in huge areas of the equatorial Pacific.
(The knock-on effects of this decline are immediate and tragic. The phytoplankton-dependent krill populations in the Southern Ocean which are the staple food of all the great baleen whales are now down by 80% and the shortfall is now also starving local fish species, penguins and seals.)
Restoring open ocean plankton populations to known 1980 levels of health would not only annually sequester at minimum 3~4 billion tons of atmospheric CO2 (or half our global warming surplus today), it would regenerate tens of billions of tons of missing nourishment for fisheries, seabirds and marine mammals.
And this restoration can be quickly and affordably accomplished, just by replenishing missing iron micronutrients to the sea. The iron was traditionally delivered to the open ocean in wind-borne dust from arid lands which has now been depleted by 30% or more by modern agricultural practices and the increased levels of atmospheric CO2 (which allow grasses to live longer, spread further, and anchor more iron-rich topsoil dust).
I recognize that trying to repair the ecosystem is a worthy goal. However, pretty much any time we've tried to throw chemicals at an ecosystem or a biological system we've damaged or want to control, the results have been disastrous. See also: DDT and other pesticides, BGH, antibiotics, fertilizers...
Each molecule of iron returned can fix over 100,000 molecules of CO2 and generate a proportionate amount of nutritive biomass. While nearly 80% of that is recycled in the marine food web, 20% or more disappears into the deep ocean for centuries or millennia.
In other words, at maximum efficiency it would only take several hundred thousand tons (or about two supertankers full) of iron dust to restore the lost plankton to 1980 levels and solve half our global warming surplus, too. More likely until the technology is perfected, it will take a small fleet of research ships working with several times more dust to accomplish this task, but still we are talking a very feasible challenge that would at most be reseeding less than 2% of surface ocean waters.
If we undertake this for the benefit of sea life and the climate and stop at the known 1980 baseline, where is the harm? Iron restoration simply replenishes a vital micronutrient that human activity has dangerously diminished.
We have caused these crises and to attempt to resolve them in most natural and benign way available is not geoengineering, it's generally known as restitution, healing or just merciful common sense.
It's gratifying that the carbon credit market has arisen to underwrite the needed restoration activity, because no one was lifting a finger or spending a cent to address these die-offs before. If you oppose restoration now simply because it may finally be both possible and profitable, you might as well also oppose the practice of medicine, environmental law and public health.
I don't oppose the plan because it's profitable (I am actually starting business school in the fall and hope to work with companies to make it profitable for them to act responsibly on social, environmental, and animal rights issues). I oppose the Planktos plan because it's untested and totally irresponsible, and, if it damages the oceans, the ecosystem and the people of Ecuador will have to pay for the mistakes of Planktos, who will get off scot-free.
Also, none of the articles listed below even suggests that the solution to the problem is just dumping hundreds of thousands of tons iron in the ocean; they simply state the deficiency.
OCEAN PLANT LIFE SLOWS DOWN AND ABSORBS LESS CARBON
NASA News, September 16, 2003
"This research shows ocean primary productivity is declining, and it may be a result of climate changes such as increased temperatures and decreased iron deposition into parts of the oceans. This has major implications for the global carbon cycle," Gregg said. Iron from trans-continental dust clouds is an important nutrient for phytoplankton, and when lacking can keep populations from growing... the amount of iron deposited from desert dust clouds into the global oceans decreased by 25 percent over two decades. These dust clouds blow across the oceans. Reductions in NPP in the South Pacific were associated with a 35 percent decline in atmospheric iron deposition.
http://earthobservatory.nasa.gov/Newsroom/NasaNews/2003/2003091615946.html
[IRON STRESSED] PLANKTON FOUND TO ABSORB LESS CARBON DIOXIDE, BBC, 08/30/06
The amount of carbon absorbed by plant plankton in large segments of the Pacific Ocean is much less than previously estimated, researchers say. US scientists said the tiny ocean plants were absorbing up to two billion tonnes less CO2 because their growth was being limited by a lack of iron.
http://news.bbc.co.uk/1/hi/sci/tech/5298004.stm
The evidence in the BBC article even points against dumping more iron in to absorb carbon:
The studies showed that it did boost phytoplankton growth, but it did not deliver the results that models had predicted.
Professor Behrenfeld said introducing iron was complex: "When you first do it, there is an explosion of growth.
"Then you add a bit more iron, and the phytoplankton respond a bit more," he said. "But at the same time you are promoting plankton growth, the grazers that feed on them come to life because they suddenly have a more abundant food supply."
ANEMIC PHYTOPLANKTON ABSORB LESS CARBON THAN THOUGHT
By JR Minkel, Science News
Phytoplankton in the Pacific Ocean are starved for iron, and as a result these microscopic plants soak up less of the greenhouse gas carbon dioxide than was previously thought, researchers have found.
http://www.sciam.com/article.cfm?chanID=sa003&articleID=0000424F-D77A-14F5-977A83414B7F0000
PLANKTON KILLED BY OCEAN WARMING
SYDNEY: Plankton - the vital first link in the food chain of the seas - will be hugely affected by global warming, a new U.S. study suggests. Plankton forms the main food of many ocean species, and fisheries could be badly hit by the loss of these micro-organisms as a result of warmer waters, according to the paper, published this week in the British journal Nature... Other factors that influence phytoplankton growth include [iron] dust blown from the land, and variations in solar radiation.
http://www.cosmosmagazine.com/node/908
EFFECT OF NATURAL IRON FERTILIZATION ON CARBON SEQUESTRATION IN THE SOUTHERN OCEAN
Nature, Vol 446|26 April 2007| doi:10.1038/nature05700
The efficiency of fertilization, defined as the ratio of the carbon export to the amount of
iron supplied, was at least ten times higher than previous estimates from short-term blooms induced by iron-addition experiments. This result sheds new light on the effect of long-term fertilization by iron and macronutrients on carbon sequestration, suggesting
that changes in iron supply from below—as invoked in some palaeoclimatic and future climate change scenarios11—may have a more significant effect on atmospheric carbon dioxide concentrations than previously thought.
OCEAN GOBBLES CARBON AT DIFFERENT RATES
NewScientist.com news service
26 April 2007
Dead plankton does not sink at the same rate everywhere in the Pacific Ocean, say researchers. The new findings will boost our understanding of the supply chain to the world's biggest carbon sink - the bottom of the ocean. [Shows 20~50% of dying plankton take their carbon below 1000 meters into the millennial sequestration zone.]
http://environment.newscientist.com/article.ns?id=dn11725