Environment Concepts

Eutrophication: Meaning, Impacts and Control

Eutrophication derives from the Greek word eutrophos, meaning nourished or enriched. Eutrophication refers to the addition of artificial or non-artificial substances, such as nitrates and phosphates, through fertilizers or sewage, to a fresh water system. It can be anthropogenic or natural. It leads increase in the primary productivity of the water body or “bloom” of phytoplankton. The ..


Bio-accumulation, Bio-concentration and Bio-magnification

Bio-accumulation, Bio-concentration and Bio-magnification are three different concepts.  Bio-accumulation refers to increase in concentration of a substance in certain tissues of organism’s body. While Bioaccumulation occurs when an organism absorbs a toxic substance from all sources at a rate greater than that at which the substance is lost. Bioconcentration occurs when an organism absorbs a toxic ..