Complex sentence: Supersaturation may be enhanced by factors leading to a reduction in pCO 2, for example increased air-water interactions at waterfalls may be important (Zhang et al., 2001), as may photosynthesis (Riding, 2000).
Split into simpler sentences: Supersaturation may be enhanced by factors leading to a reduction in pCO 2. Increased air-water interactions at waterfalls may be important (Zhang et al., 2001), as may photosynthesis (Riding, 2000).