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Changes in photosynthetic efficiency over time in Light and Dark treatments measured at 10 min intervals. Photosynthetic efficiency (Fv’/Fm’ ratio of fluorescence, is unit-less and usually expressed in the scale of 0–1, or in an expanded range of 0–1000, where 500 represents 0.5 in the original scale – as in the present study) was elevated in the lighted areas under circular areas of foil-cutouts where filaments had aggregated in both trials runs.
