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. 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 -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to geoengineering+unsubscr...@googlegroups.com. To post to this group, send email to geoengineering@googlegroups.com. Visit this group at http://groups.google.com/group/geoengineering?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
