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| Format: | Artículo científico |
| Langue: | en |
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Universidad de Costa Rica
2021
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| Accès en ligne: | https://www.redalyc.org/articulo.oa?id=44967852006 https://www.redalyc.org/journal/449/44967852006/ https://www.redalyc.org/journal/449/44967852006/html/ https://www.redalyc.org/journal/449/44967852006/44967852006.epub https://www.redalyc.org/journal/449/44967852006/movil |
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| _version_ | 1866557534988402688 |
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| author | Soma-Das Sarkar |
| author_facet | Soma-Das Sarkar |
| contents | Effect of climato-environmental parameters on chlorophyll a concentration in the lower Ganga basin, India Soma-Das Sarkar Uttam-Kumar Sarkar Malay Naskar Koushik Roy Arun-Kumar Bose Subir-Kumar Nag Gunjan Karnatak Basanta-Kumar Das Biología River Ganga Chlorophyll a climate change predictive modeling environmental variable Introduction: Chlorophyll a concentration proxies the phytoplankton biomass which directly involves in signifying the production functions of aquatic ecosystem. Thus, it is imperative to understand their spatio-temporal kinetics in lotic environment with reference to regional climatic variabilities in the tropical inland waters. Objective: In-situ studies were conducted to examine the changes in phytoplankton biomass in lower Ganga basin as influenced by various environmental parameters under regional climatic variability during 2014-2016. Methods: Firstly, the most key influential environmental parameters on riverine Chl-a concentration were determined. Then the direct cascading effect of changing climatic variables on key environmental parameters were derived through modeling and quantified probable changes in mean Chl-a concentration in the lower stretch of river. Results: Only five environmental parameters namely water temperature, total dissolved solid, salinity, total alkalinity and pH were key factors influencing Chl-a (Multiple R2: 0.638, P < 0.05). Present estimates indicate that if the present rate of regional climatic variability over the last 3 decades (mean air temperature + 0.24 °C, total annual rainfall -196.3 mm) remain consistent over the next three decades (2015-2045), an increase in mean Chl-a by + 170 µgL-1 may likely be expected grossly reaching about 475.94 µg L-1 by the year 2045 or more. Conclusions: The present study is first such comprehending a gross hint towards the probable ecosystem response with an alternative model based methodology in data-deficient situations. Subsequently, the output would also be of great benefit for increase water governance and developing strategy protocol for sustainable water management for greater ecosystem services. 2021 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44967852006 https://www.redalyc.org/journal/449/44967852006/ https://www.redalyc.org/journal/449/44967852006/html/ https://www.redalyc.org/journal/449/44967852006/44967852006.epub https://www.redalyc.org/journal/449/44967852006/movil 10.15517/rbt.v69i1.42731 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.1 Vol.69 |
| format | Artículo científico |
| id | redalyc_44967852006 |
| language | en |
| publishDate | 2021 |
| publisher | Universidad de Costa Rica |
| spellingShingle | Effect of climato-environmental parameters on chlorophyll a concentration in the lower Ganga basin, India Soma-Das Sarkar Biología River Ganga Chlorophyll a climate change predictive modeling environmental variable Effect of climato-environmental parameters on chlorophyll a concentration in the lower Ganga basin, India Soma-Das Sarkar Uttam-Kumar Sarkar Malay Naskar Koushik Roy Arun-Kumar Bose Subir-Kumar Nag Gunjan Karnatak Basanta-Kumar Das Biología River Ganga Chlorophyll a climate change predictive modeling environmental variable Introduction: Chlorophyll a concentration proxies the phytoplankton biomass which directly involves in signifying the production functions of aquatic ecosystem. Thus, it is imperative to understand their spatio-temporal kinetics in lotic environment with reference to regional climatic variabilities in the tropical inland waters. Objective: In-situ studies were conducted to examine the changes in phytoplankton biomass in lower Ganga basin as influenced by various environmental parameters under regional climatic variability during 2014-2016. Methods: Firstly, the most key influential environmental parameters on riverine Chl-a concentration were determined. Then the direct cascading effect of changing climatic variables on key environmental parameters were derived through modeling and quantified probable changes in mean Chl-a concentration in the lower stretch of river. Results: Only five environmental parameters namely water temperature, total dissolved solid, salinity, total alkalinity and pH were key factors influencing Chl-a (Multiple R2: 0.638, P < 0.05). Present estimates indicate that if the present rate of regional climatic variability over the last 3 decades (mean air temperature + 0.24 °C, total annual rainfall -196.3 mm) remain consistent over the next three decades (2015-2045), an increase in mean Chl-a by + 170 µgL-1 may likely be expected grossly reaching about 475.94 µg L-1 by the year 2045 or more. Conclusions: The present study is first such comprehending a gross hint towards the probable ecosystem response with an alternative model based methodology in data-deficient situations. Subsequently, the output would also be of great benefit for increase water governance and developing strategy protocol for sustainable water management for greater ecosystem services. 2021 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44967852006 https://www.redalyc.org/journal/449/44967852006/ https://www.redalyc.org/journal/449/44967852006/html/ https://www.redalyc.org/journal/449/44967852006/44967852006.epub https://www.redalyc.org/journal/449/44967852006/movil 10.15517/rbt.v69i1.42731 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.1 Vol.69 |
| title | Effect of climato-environmental parameters on chlorophyll a concentration in the lower Ganga basin, India |
| topic | Biología River Ganga Chlorophyll a climate change predictive modeling environmental variable |
| url | https://www.redalyc.org/articulo.oa?id=44967852006 https://www.redalyc.org/journal/449/44967852006/ https://www.redalyc.org/journal/449/44967852006/html/ https://www.redalyc.org/journal/449/44967852006/44967852006.epub https://www.redalyc.org/journal/449/44967852006/movil |