@article{epprod3694, volume = {316}, number = {5824}, month = {["lib/utils:month\verb1_13694" not defined]}, author = {KO Buesseler and M Elskens and M Honda and DM Karl and DA Siegel and MW Silver and DK Steinberg and J Valdes and B Van Mooy and S Wilson and CH Lamborg and PW Boyd and PJ Lam and TW Trull and RR Bridigare and JKB Bishop and KL Casciotti and F Dehairs}, title = {Revisiting carbon flux through the ccean's twilight zone}, publisher = {American Association Advancement Science}, year = {2007}, journal = {Science}, pages = {567--570}, url = {http://eprints.utas.edu.au/3694/}, abstract = {The oceanic biological pump drives sequestration of carbon dioxide in the deep sea via sinking particles. Rapid biological consumption and remineralization of carbon in the "twilight zone" (depths between the euphotic zone and 1000 meters) reduce the efficiency of sequestration. By using neutrally buoyant sediment traps to sample this chronically understudied realm, we measured a transfer efficiency of sinking particulate organic carbon between 150 and 500 meters of 20 and 50% at two contrasting sites. This large variability in transfer efficiency is poorly represented in biogeochemical models. If applied globally, this is equivalent to a difference in carbon sequestration of more than 3 petagrams of carbon per year.} }