Original Research Article
Year: 2017 | Month: May | Volume: 4 | Issue: 5 | Pages: 133-141
Effects of Integrated Biomanipulation Approach for Eutrophication Management in Jajpur, Odisha
D. S. Das1, B. N. Naik2
1Reader and Head, Department of Zoology, D.D. (Auto.) College, Keonjhar, Odisha, India.
2Ex-Professor and Head, Department of Environmental Science, F.M. University, Balasore, Odisha, India
Corresponding Author: D. S. Das
ABSTRACT
Many people throughout the world depend on fresh water bodies such as ponds as the main source of drinking water. The water in these ponds can sometimes be subject to eutrophication which leads to negative health impact in human and livestock. An ecotechnological method of treating water is known as biomanipulation which was applied to experimental ponds undergoing eutrophication at Jajpur, Odisha. It has been carried out in a highly eutrophic water body at Mulapal, Jajpur from 2009-11. Ecosystem parameters like Phytoplankton blooms as Cholorophyll- a concentration, transparency and Phosphate, Nitrates etc. were taken for test. Results of this integrated biomanipulation experiment showed that reduction of chlorophyll- a concentration, increase of transparency are improved, however this tendency of improvements of parameters are more prominent during the next two years of biomanipulation. This may continue in next years ahead. This suggests that this new biomanipulation technique and its effects are observed in a long term period. Results of this experiment also showed that size of Daphnia pulex are increased in 2nd phase biomanipulation, which is a positive sign for phytoplankton grazing intensity. This integrated biomanipulation is different from traditional biomanipulaton. In this Integrated biomanipulation approach stresses are given to involve both filterivores as well as piscivores for removal of algae along with nutrients from the hyper-eutrophic water bodies. Whereas piscivores are associated with removal of phytoplankton by zooplankton grazing. So zooplankton like Daphnia etc. are provided a predation free system with piscivorous fish population.ipulated
Key words: Eutrophication, biomanipulation, eco-technology, bioman ipulated (BM), prebiomanipulated (PBM),
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