Phytoplankton diversity in relation to physico-chemical factors in some selected ponds at Patna (Bihar), India.

摘要

Physico-chemical regulators of two ponds modulate phytoplankton diversity differentially. Pond I without getting sewage effluent shows significant correlation with HCO-₃ (0.906), Ca (0.754), Cl (0.891), nitrate-nitrogen (0.913) and COD (0.850) at 0.001 level. It favors a maximum of 498 ind/liter in warmer months out of which 53% belong to Chlorophyceae. In Pond II a commonly by used pond correlation value of CI (0.869), nitrate-nitrogen (0.810) and COD (0.814) were significant favouring 43% population of Bacillariophyceae in warmer months. Total 36 genera were collected belonging to four classes of algae viz. Bacillariophyceae, Chlorophyceae, Cyanophyceae and Euglenophyceae.