Shade and flow effects on ammonia retention in macrophyte-rich streams: implications for water quality

• Published in: Environmental pollution (1987) Vol. 132; no. 1; pp. 95 - 100
• Main Authors: Wilcock, Robert J, Scarsbrook, Mike R, Cooke, James G, Costley, Kerry J, Nagels, John W
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.11.2004; Elsevier
• Subjects: Ammonia; Ammonia - analysis; Animal, plant and microbial ecology; Applied ecology; Biological and medical sciences; Biomass; Ecosystem; Ecotoxicology, biological effects of pollution; Fresh water environment; Freshwater; Fundamental and applied biological sciences. Psychology; Lowland stream; Macrophytes; Nutrients; Nutritional Physiological Phenomena; Plants - metabolism; Retention rate; Rivers; Water Movements; Water Pollution - adverse effects; Water Supply; Retention rate; Ammonia; Nutrients; Macrophytes; Lowland stream; Environmental factor; Biomass; Water current; Retention; Freshwater environment; Water quality; Nutrient; Stream; Aquatic plant

Controlled releases of NH 4-N and conservative tracers (Br − and Cl −) to five reaches of four streams with contrasting macrophyte communities have shown differing retentions, largely as a result of the way plants interact with stream flow and velocity. First-order constants ( k) were 1.0–4.8 d −1 a...