Isn't this also relevant to sequestration strategies? It sounds as if increased concentrations could create different results than currently anticipated. ᐧ
On Mon, Mar 30, 2015 at 9:45 AM, Andrew Lockley <andrew.lock...@gmail.com> wrote: > Poster's note : of interest to OIF researchers > > http://m.sciencemag.org/content/early/2015/03/18/science.1258955.abstract > > Science > DOI: 10.1126/science.1258955 > Report > > OCEAN CHEMISTRY > > Dilution limits dissolved organic carbon utilization in the deep ocean > > > Abstract > > Oceanic dissolved organic carbon (DOC) is the second largest reservoir of > organic carbon on Earth. About 72% of the global DOC inventory is stored in > deep oceanic layers for years to centuries, supporting the current view > that it consists of materials resistant to microbial degradation. An > alternative hypothesis is that deep-water DOC consists of many different, > intrinsically labile compounds at concentrations too low to compensate for > the metabolic costs associated to their utilization. Here we present > experimental evidence showing that low concentrations rather than > recalcitrance preclude consumption of a significant fraction of DOC leading > to slow microbial growth in the deep ocean. These findings demonstrate an > alternative mechanism for the long-term storage of labile DOC in the deep > ocean, which has been hitherto largely ignored. > > -- > 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. > For more options, visit https://groups.google.com/d/optout. > -- 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. For more options, visit https://groups.google.com/d/optout.
