Table 1. DBL thickness and oxygen flux in interactions between the massive coral Porites spp. and algae.

	Coral-turf (n = 7)			Coral-CCA (n = 9)
	DBL	PN	RD	DBL	PN	RD
Coral	353±206	0.15±0.06	0.10±0.16	248±110	0.20±0.08	0.13±0.14
Interface	961±378	nd	nd	770±349	nd	nd
Alga	424±169	0.61±0.28	0.08±0.11	402±170	0.34±0.18	0.10±0.14

DBL thickness (µm), net photosynthesis rate (P_N) and dark respiration rate (R_D, both in nmol O₂ cm⁻² s⁻¹) at the three sampling points (‘Coral’, ‘Interface’ and ‘Alga’) for each coral-algal interaction type (coral-turf and coral-CCA). Data are means ±95% Confidence Intervals. Note that oxygen fluxes at the interface between coral and algae were not calculated directly from the microprofiles due to violated assumptions in the one-dimensional Fick's first law of diffusion. Therefore the flux at the interface was modeled.