Abstract
Phosphorus cycling processes were studied in an acidic lake to test the oligotrophication hypothesis. P storages and inputs were measured; in situ and laboratory experiments measured pH effects on planktonic uptake and release, macrophyte release, and sediment-water exchange of SRP. Planktonic rates showed little response to pH; release from macrophytes initially was slowest at highest pH (5.5), but after 225 days was not affected over the pH range 3.7 to 5.5. Maximum SRP sorption by sediments occurred at pH 4.0 to 5.5; decreasing sorption above pH 5.5 provides some support for the oligtrophication hypothesis.
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Ogburn, R.W., Brezonik, P.L. Examination of the oligotrophication hypothesis: Phosporus cycling in an acidic Florida lake. Water Air Soil Pollut 30, 1001–1006 (1986). https://doi.org/10.1007/BF00303363
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DOI: https://doi.org/10.1007/BF00303363