Abbreviations

photosynthetic photon flux density (PPFD) photosystem I & II (PSI & PSII) maximum quantum yield of PSII in dark-adapted state (Fv/Fm) effective quantum yield of PSII induced in light (Fv'/Fm<sup>0</sup> ) non-photochemical quenching by heat dissipation (NPQ) photochemical quenching as an estimate of open PSII reaction centers (qP) quantum efficiency of PSII (ØPSII)
