Thank you A very comprehensive and informative document.
I would like to comment as follows - The break up of the source of estimated 38,000 Billion tons of Carbon in the oceans is not discussed. Obviously Phytoplankton dying and sinking would not have alone been responsible for all the carbon in the oceans, so what are the other processes involved? Has over fishing slowed the Carbon cycle in the oceans? The decimation of the whale population in the first half of the 20th century may have decreased the recycling of Iron and thereby slowed down the Diatom bloom and carbon sequestration, this and other similar issues have not been discussed. Pg 1 "Because scientific studies to date have been short-term and of relatively small scale, it is not yet known how iron-based ocean fertilization might affect zooplankton, fish and seafloor biota..." Pg 8 "As already indicated, fertilization experiments have been of insufficient duration and spatial scale to reveal changes at higher levels within the food chain. Thus any suggestions of either positive or negative impacts on fish stocks remain speculative." I agree that fertilization experiments should be conducted for a longer duration to understand the impact on the food chain. We have been fertilizing fresh water lakes with our Nano silica based micro nutrient powder for past 5 years, with specific objective of causing bloom of Diatoms. We have always got dominant bloom of Diatoms and with very good results on Zooplankton, fish and control of nuisance / harmful algae, obnoxious weeds and aquatic plants. Pg 3 "For fishery enhancement "Increases in ocean productivity following largescale ocean fertilization might provide additional benefits from a human perspective, since growth enhancement of fish stocks might result, increasing the yield of exploitable fisheries. " Our objective in use of the Nano Silica based Micro Nutrient was ONLY to increase fisheries and we have always succeeded. Pg 5, Box 2 "Iron in seawater is mostly in an insoluble form which precipitates and sinks out of the surface ocean rapidly." We have solved this problem, Iron and other metals in our product are stable in water for a very long time. "Although Diatoms usually dominated species composition after iron addition, ..." The CBD report on the 13 Ocean Fertilization states that only 5 of the 13 experiments produced a dominant bloom of Diatoms. Pg 12 "An additional factor, observed in other studies, was the rapid loss (of up to 75%) of the added iron, by its precipitation and scavenging onto particles before it could be utilized for phytoplankton growth. Improved delivery mechanisms for iron, such as the use of chemical complexing agents, could improve this efficiency, but with cost implications." We have used Nano Silica as the delivery vehicle to reduce loss and improved efficiency. Our process is cost effective for fisheries - use of Diatom Algae as a source of food and oxygen, so we believe that it would be cost effective for carbon sequestration too. best regards Bhaskar www.kadambari.net On Jan 25, 10:31 am, Mike MacCracken <mmacc...@comcast.net> wrote: > From: Henrik Enevoldsen [mailto:h.enevold...@bio.ku.dk] > Sent: Tuesday, January 25, 2011 9:00 AM > Subject: RE: A Scientific Summary for Policymakers on Ocean Fertilization > ANNOUNCEMENT (for wider distribution as appropriate): > Dear friends, > A Scientific Summary for Policymakers on Ocean Fertilization, commissioned > by the Intergovernmental Oceanographic Commission of UNESCO and prepared > with the assistance of the Surface Ocean Lower Atmosphere Study (SOLAS), is > now available through online and in print. The Summary considers the > practicalities, opportunities and threats associated with large-scale ocean > fertilization. > The Summary for Policymakers is available for download > athttp://unesdoc.unesco.org/images/0019/001906/190674e.pdf > To request a print copy please contact Kathy Tedesco at IOC-UNESCO > (k.tede...@unesco.org) or Emily Breviere at SOLAS (ebrevi...@ifm-geomar.de). > > Best regards, Henrik EnevoldsenIntergovernmental Oceanographic Commission > of UNESCO > > image.gif > 1KViewDownload -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To post to this group, send email to geoengineering@googlegroups.com. To unsubscribe from this group, send email to geoengineering+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/geoengineering?hl=en.
