Impacts of low pH and low salinity induced by acid rain on the photosynthetic activity of green tidal alga Ulva prolifera

Abstract

Chl -chlorophyll; F0 -minimal fluorescence yield of the dark-adapted state; Fm -maximal fluorescence yield of the dark-adapted state; Fm' -maximal fluorescence yield of the light-adapted state; Fs -steady-state fluorescence yield; Fv/Fm -maximal quantum yield of PSII photochemistry; NPQ -nonphotochemical quenching; qE -energy-dependent quenching; RGR -relative growth rate; ROS -reactive oxygen species; ФPSII -effective quantum yield of PSII photochemistry.