The Effect of Physico-Chemical Stress on the Population of Chlamydomonas Species in a permanent pond of Kanpur, (U.P.) India

Abstract

In permanent lentic water bodies, the chemical picture completely depends on the surroundings from where these bodies receive effluents. Planktons play an important role as primary producers of the system. The limnological study is important for water quality monitoring by which correlation has been established among different physical, chemical, and biological parameters. This statistical analysis easily represented the presence /absence of Planktons on the basis of seasonal variations. Regarding the seasonal variations, the values of pH, magnesium & calcium (Mg, Ca), dissolved oxygen & dissolved oxygen matter (DO, DOM) indicate variation in water quality which directly or indirectly influence the population of Chlamydomonas elliptica, Chlamydomonas globosa, Chlamydomonas intermedia, and Chlamydomonas orbicularis. On the basis of chemical analysis in terms of DO & DOM, the shallow water system was moderately polluted. Chlamydomonas intermedia showed dominant species which occurred most of the months in a year. The fluctuation in the population densities of Chlamydomonas elliptica, Chlamydomonas globosa, and Chlamydomonas orbicularis was observed greatly as they occurred in a few months in a year. Chlamydomonas intermedia showed positive co-relation with DO and significant negative co-relation with DOM. Mg and pH showed significant negative values. Apart from this, biological populations also showed various co-relation among other known species.