Fig 5. Photosynthetically active radiation (PAR; μmol photons/m-2 s-1; note values are divided by 20 to fit axis) measured just below the water surface in the Mangatainoka River (site B), and electron transfer rate (ETR; μmol electrons m-2 s-1 and yield (FII [calculated as (F m´- F)/(F m´)]) measured on a Phormidium mat mid-channel in the Mangatainoka River (11 March to 13 March 2014; 5-min intervals).
