Abstract
A waterhyacinth (Eichhornia crassipes) marsh occupying two-thirds of the basin of a small Florida impoundment has received sewage effluent for nearly 20 years. Water from the marsh flows into an area that is maintained free of waterhyacinths, and is discharged through wells at the far end of the impoundment. A water budget for the basin was estimated, and phosphorus concentrations were measured monthly at three stations in the marsh and at the discharge wells in the lake. Productivity levels were measured monthly where the marsh joins the lake and at the discharge wells. Only 16% of the phosphorus that enters the basin is stored. Gross primary productivity levels in the open-water areas are very high (22 gO2m2day), but high respiration rates appear to keep the lake in steady-state.
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Vega, A., Ewel, K.C. Wastewater effects on a waterhyacinth marsh and adjacent impoundment. Environmental Management 5, 537–541 (1981). https://doi.org/10.1007/BF01866727
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DOI: https://doi.org/10.1007/BF01866727