what do you understand by natural ageing of lake? discuss
this question carries 2 marks
please give a proper answer in simple language
this question carries 2 marks
please give a proper answer in simple language
The process of lake aging characterized by nutrient enrichment is known as natural eutrophication. This process gradually converts the original oligotrophic lake into a eutrophic lake. Natural fertility of lakes is increased by addition of nutrient rich loads of sediment and organic matter from the catchment area. This permits the production of larger quantities of phytoplankton and algal blooms, and other aquatic vegetation, including aquatic weeds, water hyacinth, water fern, and water lettuce, which in turn provide more ample food for herbivorous zooplankton and fish.
When these plants and animals die, their bodies settle at the lake bottom and accumulate along with the sediment brought by tributary streams. The plant and animal remains then gradually decompose, thus releasing nutrients that could be channeled into the living bodies of future generations of organisms. As the natural process of lake ageing continues over the years, the original oligotrophic lake is gradually converted into an eutrophic lake.
The process of lake aging characterized by nutrient enrichment is known as natural eutrophication. This process gradually converts the original oligotrophic lake into a eutrophic lake. Natural fertility of lakes is increased by addition of nutrient rich loads of sediment and organic matter from the catchment area. This permits the production of larger quantities of phytoplankton and algal blooms, and other aquatic vegetation, including aquatic weeds, water hyacinth, water fern, and water lettuce, which in turn provide more ample food for herbivorous zooplankton and fish.
When these plants and animals die, their bodies settle at the lake bottom and accumulate along with the sediment brought by tributary streams. The plant and animal remains then gradually decompose, thus releasing nutrients that could be channeled into the living bodies of future generations of organisms. As the natural process of lake ageing continues over the years, the original oligotrophic lake is gradually converted into an eutrophic lake.
