Abstract
Two hypotheses that could explain increases in the biomass and production of lotic periphytic communities in acidified habitats were tested: 1) a greater bioavailability of P due to its greater release from sediments at low pH, and 2) utilization of S from the H2SO4 addition. The experiments were performed in semi-natural conditions by submitting the periphyton to either continuous or episodic acidification. The uptake of P and S by periphyton were determined at different times during the treatments. The increases in P and S uptake, in acidified habitats, are compatible with both hypotheses and could account for the increase in periphytic biomass and production.
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Planas, D., Moreau, G. Reaction of lotic periphyton to experimental acidification. Water Air Soil Pollut 30, 681–686 (1986). https://doi.org/10.1007/BF00303332
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DOI: https://doi.org/10.1007/BF00303332