||Duursma EK, Boisson MPRM, Global oceanic and atmospheric oxygen stability considered in relation to the carbon-cycle and to different time scales. Oceanologica Acta (0399-1784) (Gauthier-Villars), 1994 , Vol. 17 , N. 2 , P. 117-141 link p.133 left column 2nd paragraph
||Harrison W.G. and T. Platt (1980). Variations in assimilation number of coastal marine phytoplankton: effects of environmental covariates. J. Plankt. Res., 2, 249-260 link AND Côté B. and T. Platt (1983). Day-to-day variations in the spring-summer photosynthetic parameters of coastal marine phytoplankton. Limnol. Oceanogr., 28, 320-344 link
||Primary source Harrison and Platt (1980) abstract: "Seasonal variations in maximum specific production rate (assimilation number, [mg C photosynthetically-fixed (mg Chl a)^-1×hr^-1]) of natural phytoplankton from a shallow marine basin were studied in relation to environmental changes over a 22-month period." Primary source Côté and Platt (1983) abstract: "The day‐to‐day variations over a 70‐day period in the parameters describing the light‐saturation curve of natural assemblages of coastal marine phytoplankton were examined and related to changing environmental conditions."
||P.133 left column 2nd paragraph: "In marine phytoplankton, Harrison and Platt (1980 primary source) and Côté and Platt (1983 primary source) have shown that 50 % of the photosynthesis variations were due to temperature changes." Primary source Harrison and Platt (1980) abstract: "Assimilation number [mg C photosynthetically-fixed (mg Chl a)^-1×hr^-1] variations were considerable (>6 fold) and were correlated with both environmental and biological co-variates. Temperature was the most significant co-variate, accounting for 40% of the observed variation in assimilation number."