Table 2. Mean turbidity and photosynthetically active radiation (PAR) for the Barrow Island, Cape Lambert and Burrup Peninsula dredging programs.

	Turbidity (NTU)		PAR (μmol photons m-2 s-1)
Program	Baseline	Dredging	Baseline	Dredging
Barrow Island	1 (1–3) N = 18	3 (1–7) N = 18	102 (49–320), N = 18	86 (20–288) N = 18
Cape Lambert	4 (1–10) N = 5	5 (2–9) N = 5
Burrup Peninsula	2 (0–3) N = 11	5 (1–35) N = 11

Values are the mean across all sites, with values in parentheses showing the range of within site means at each location. N indicates that number of sites used for each location