Stream Rehabilitation Following Treatment for Phosphorus Removal: Pre-Treatment Assessment

摘要

Assessment was made of water quality and growth magnitude of rooted aquatic plants in a nutrient-enriched shallow stream system to provide a basis for evaluating the recovery of the ecosystem following implementation of a phosphorus (P) removal program. This program utilized spray irrigation of treated domestic waste water. Field studies were used to define temporal and spatial changes of aquatic plant biomass in selected study areas. A plant biomass model was evaluated, refined and calibrated to predict macrophyte biomass change as a function of varying environmental factors. The potential of this model as a management tool to assess the impact of nutrient reductions on stream oxygen budgets was studied.