A very good presentation on the 'Geo-engineering' of River Mississippi and Gulf of Mexico since 1950s with Dams and Fertilizers www.bonusportal.org/files/646/*Rabalais*.pdf Hypoxia in Shelf Seas: Global Perspective
Pg 18 Si:N molar ratio was 4:1 [ in 1950s ], is now 1:1 at Redfield Pg 19 Si:Din > 1:1 diatoms as prey zooplankton as predators desirable fish community Si:Din < 1:1 flagellated algae, incl. harmful algal blooms zooplankton reduced undesirable or reduced fish stocks regards Bhaskar On Wednesday, 1 May 2013 17:43:07 UTC+5:30, Fred Zimmerman wrote: > > I am interested in this comment on lake geoengineering because it is > consistent with a concern that I have been expressing. Namely, that the > scope of information management involved in future GE enterprises is very > large. here is a whole additional domain, not commonly considered > "geoengineering", of activities that are conscious ecosystem interventions > that may need to be tracked, monitored, managed, and, especially, > integrated with other GE activities. > > > --- > Fred Zimmerman > Geoengineering IT! > Bringing together the worlds of geoengineering and information technology > GE NewsFilter: http://geoengineeringIT.net:8080 > > > On Tue, Apr 30, 2013 at 10:59 AM, Spears, Bryan M. > <sp...@ceh.ac.uk<javascript:> > > wrote: > >> Dear Bhaskar, >> >> Thank you for your interest in our paper. We would be happy to discuss >> our research in this area further with you if this would be useful. >> >> Very best wishes, >> >> Bryan >> >> >> Dr. Bryan Spears >> Freshwater Ecologist >> CEH - Edinburgh >> Bush Estate, Penicuik, Midlothian, UK >> EH26 0QB >> Direct dial: 0131 445 8536 >> http://www.ceh.ac.uk/staffwebpages/DrBryanSpears.html >> http://www.ceh.ac.uk/sci_programmes/UK-Lakes-Restoration.html >> >> >> >> >-----Original Message----- >> >From: M V Bhaskar [mailto:bhaska...@gmail.com <javascript:>] >> >Sent: 30 April 2013 11:51 >> >To: geoengi...@googlegroups.com <javascript:> >> >Cc: nua...@gmail.com <javascript:>; Spears, Bryan M.; >> geoengin...@gmail.com <javascript:> >> >Subject: Re: Apparently we've been doing global scale lake >> >geoengineering (P-capping) for decades >> > >> >Fred >> > >> >We have a much simpler, ecofriendly and logical process. >> >We grow Diatom Algae in the lakes, these consume the P and Diatoms are >> >consumed by fish, so it exits the lake as fish. >> > >> >The problem with excess nutrients in lakes is due to the wrong type of >> >algae and weeds growing in them due to the influx of nutrients. If the >> >right type of algae i.e., Diatoms grow there would be no eutrophication. >> > >> >regards >> > >> >Bhaskar >> > >> >On Tuesday, 30 April 2013 05:52:14 UTC+5:30, Fred Zimmerman wrote: >> > >> > http://pubs.acs.org/doi/full/10.1021/es401363w >> ><http://pubs.acs.org/doi/full/10.1021/es401363w> >> > >> > >> > Geo-Engineering in Lakes—A Call for Consensus >> > >> > Bryan M. Spears *†, Bernard Dudley †, Kasper Reitzel ‡, and Emil >> >Rydin § >> > >> > † Centre for Ecology and Hydrology in Edinburgh, Penicuik, >> >Midlothian, Scotland, UK EH26 0QB >> > ‡ Institute of Biology, University of Southern Denmark, Campusvej >> >55, 5230 Odense M, Denmark >> > § Erken Laboratory, Department of Ecology and Genetics, Uppsala >> >University, Norrtälje, Sweden >> > Environ. Sci. Technol., Article ASAP >> > DOI: 10.1021/es401363w >> > Publication Date (Web): April 24, 2013 >> > Copyright © 2013 American Chemical Society >> > *E-mail: sp...@ceh.ac.uk <javascript:> . >> > As climate change researchers hotly debate the values and risks >> >associated with atmospheric geo-engineering,(1) aquatic ecologists are >> >all too aware of a stark contrast between the two camps. Unlike >> >proposals for atmospheric manipulations, geo-engineering in lakes and >> >reservoirs using phosphorus(P)-removing materials has been implemented >> >at a global scale as a eutrophication management tool for decades >> >(Figure 1), in the absence of scientific consensus on its use.(2) The >> >technique, known as “P-capping”, can be used to control legacy P stores >> >in bed sediments that have built up over decades of anthropogenic >> >pollution. If left untreated, these legacy P stores can prolong water >> >quality improvements for decades following catchment management.(3) As >> >well as accelerating recovery of nutrient-impacted waterbodies, geo- >> >engineering is often considered in isolation of catchment nutrient >> >management measures due to its low relative cost and ability to produce >> >rapid short term improvements in water quality.(4, 5) However, many >> >knowledge gaps exist with respect to the technique’s efficacy, and the >> >scientific evidence is not yet available with which wide scale >> >application can be supported. We argue that a comprehensive analysis of >> >data and increased coherence across future geo-engineering research >> >programs is necessary to deliver advances in theoretical and practical >> >knowledge needed to improve the efficacy of the approach. >> > >> > --- >> > Fred Zimmerman >> > >> > Geoengineering IT! >> > Bringing together the worlds of geoengineering and information >> >technology >> > GE NewsFilter: http://geoengineeringIT.net:8080 >> ><http://geoengineeringIT.net:8080> >> >> >> This message (and any attachments) is for the recipient only. NERC is >> subject to the Freedom of Information Act 2000 and the contents of this >> email and any reply you make may be disclosed by NERC unless it is exempt >> from release under the Act. Any material supplied to NERC may be stored in >> an electronic records management system. >> > > -- You received this message because you are subscribed to the Google Groups "geoengineering" group. 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