Question

Effect of eutrophication in lake

Answer 1

1. Species diversity decreases and the dominant biota changes2. Plant and animal biomass increase3.Turbidityincreases4. Rate of sedimentation increases, shortening the lifespan of the lake5. Anoxic conditions may developBecause of the high concentration of organisms in a eutrophic system, there is often a lot of competition forresources and predator pressure. This high degree of competition and the sometimes-high chemical or physical stress make high the struggle for survival in eutrophic systems. As a result the diversity of organisms is lower in eutrophic thanin oligotrophic systems.Palmer (1962) gives an enumerationof both clean water forms of algae and algae associated with organically enriched watercours