A study on relation between phytoplankton and heavy metal pollution in Dravyavati River, Jaipur, India

摘要

Adverse consequences are the result when polluting contaminants are introduced into a natural environment. Water pollution is usually the result of untreated discharges of sewage, industrial effluent, oil spills and agricultural pesticides. Human activity involved in toxic metals processing and manufacturing of organic pollutants has dramatically increased contaminant levels in aquatic systems and soils. Algae normally occur in fresh water, and some species thrive in saltwater. Algae are valuable monitors of conditions in an ecosystem because they are exceptionally responsive to changes in water chemistry and tolerant of the variety of conditions; both the assortment of species and their density reflect the prevailing water conditions. Algae also play a role in the purification of wastewater because they can absorb a variety of harmful substances in their cells. Chief among these are heavy metals, organic and inorganic toxic substances, pesticides, excess nitrogen and radioactive materials.