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Using triple isotopes of dissolved oxygen to evaluate global marine productivity
Juranek, L.W.; Quay, P.D. (2013). Using triple isotopes of dissolved oxygen to evaluate global marine productivity. Ann. Rev. Mar. Sci. 5: 503-524.
In: Annual Review of Marine Science. Annual Reviews: Palo Alto, Calif. ISSN 1941-1405, more
Peer reviewed article  

Available in  Authors 

Author keywords
    gross O2 production, net primary production, organic carbon export, biological pump, incubation-based productivity, satellite-based productivity, in vitro and in situ comparisons

Authors  Top 
  • Juranek, L.W.
  • Quay, P.D.

    Since the triple isotopic composition of dissolved O2 (17?) was introduced as a natural tracer of photosynthetic gross O2 production (GOP) over 10 years ago, observations of 17? have been used to constrain marine productivity throughout the global ocean. This incubation-independent approach has several advantages: It allows the determination of production free from containment artifacts and reduces logistical hurdles that can make obtaining productivity with traditional incubation-dependent methods difficult. As such, GOP estimates derived from 17? have been used to give insight into potential biases in incubation-based approaches and to evaluate satellite-based estimates of production at the regional scale. With increased use, we have also learned more about the potential biases and uncertainties of this approach, some of which have been addressed by recent method improvements. We recap the major advances the 17? method has brought to improved understanding of biological carbon cycling, from incubation bottles to ocean basins.

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