Fig 6. Turbidity (NTU) and PAR (μmol photons m^-2 s^-1) during the Barrow Island dredging project measured every 10 mins over a 6 day period in April 2011 from (A) a terrestrial light sensor located on Barrow Island (B) at 4.5 m depth at a site ~150 m from dredging, and (C) at 4.5 m depth at reference site ~30 km from dredging (see Fig 1).

Numbers above the light profiles are the daily light integral (mol photons m^-2 d^-1) (see Material and Methods).