Predicting the Electron Requirement for Carbon Fixation in Seas and Oceans

0393099 - MBÚ 2014 RIV US eng J - Journal Article
Lawrenz, Evelyn - Silsbe, G. - Capuzzo, E. - Ylostalo, P. - Forster, R. M. - Simis, S. G. H. - Prášil, Ondřej - Kromkamp, J. C. - Hickman, A. E. - Moore, C. M. - Forget, M.-H. - Geider, R. J. - Suggett, D. J.
Predicting the Electron Requirement for Carbon Fixation in Seas and Oceans.
PLoS ONE. Roč. 8, č. 3 (2013), e58137. ISSN 1932-6203. E-ISSN 1932-6203
Institutional support: RVO:61388971
Keywords : FAST REPETITION RATE * DIATOM SKELETONEMA-COSTATUM * CHLOROPHYLL FLUORESCENCE
Subject RIV: EE - Microbiology, Virology
Impact factor: 3.534, year: 2013

Marine phytoplankton account for about 50% of all global net primary productivity (NPP). Active fluorometry, mainly Fast Repetition Rate fluorometry (FRRf), has been advocated as means of providing high resolution estimates of NPP. However, not measuring CO2-fixation directly, FRRf instead provides photosynthetic quantum efficiency estimates from which electron transfer rates (ETR) and ultimately CO2-fixation rates can be derived. Consequently, conversions of ETRs to CO2-fixation requires knowledge of the electron requirement for carbon fixation (Phi(e,C), ETR/CO2 uptake rate) and its dependence on environmental gradients. Such knowledge is critical for large scale implementation of active fluorescence to better characterise CO2-uptake.
Permanent Link: http://hdl.handle.net/11104/0221860