Evaluation of spatio-temporal variations in physico-chemical limnology, trophic status and cyanobacterial diversity of an impacted tropical reservoir, India for its sustainable management
| Autor: | Basanta Kumar Das, Ramya Vijayakumar Leela, Vijaykumar Muttanahalli Eregowda, Jesna Parakkandi, Uttam Kumar Sarkar, Ajoy Saha, Sibina Mol Salim, Preetha Panikkar |
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| Rok vydání: | 2021 |
| Předmět: |
Ecology
Health Toxicology and Mutagenesis Limnology media_common.quotation_subject 010401 analytical chemistry Public Health Environmental and Occupational Health Soil Science 010501 environmental sciences 01 natural sciences Pollution Tropical reservoir Algal bloom 0104 chemical sciences Analytical Chemistry Sustainable management Environmental Chemistry Environmental science Trophic state index Eutrophication Waste Management and Disposal 0105 earth and related environmental sciences Water Science and Technology Diversity (politics) media_common Trophic level |
| DOI: | 10.6084/m9.figshare.14540584 |
| Popis: | For natural ecosystems as well as human development, freshwater bodies like reservoirs are critically important. Krishnagiri reservoir, a moderately impacted tropical reservoir of India, is an important source of freshwater. However, eutrophication status due to anthropogenic activities is a major threat to this reservoir. This endeavour aimed to determine the spatio-temporal differences for selected (21) limnological parameters along with trophic status of Krishnagiri reservoir for its sustainable management. Samples (water and plankton) were collected from 11 sites covering entire reservoir during pre-monsoon, monsoon and post-monsoon season. Limnological parameters showed some spatio-temporal variations, the season has more impacts on water quality than sites as evidenced by cluster analysis. Principal component analysis distinguished the seasons based on major influencing water quality parameters. The reservoir trophic status fluctuated from eutrophic to hyper-eutrophic. Water quality index showed that the reservoir falls under unsuitable category. Additionally, cyanobacterial bloom formation was observed in all the seasons, with dominance of Microcystis sp. This investigation can be used as a baseline for studies pertaining to nutrient and sediment loading, and immediate action is required for employment of integrated management plan to restore this aquatic ecosystem. The study also recommends strategies for sustainable management of the aquatic bioresources. |
| Databáze: | OpenAIRE |
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