Anthropogenic Impact on Tropical Perennial River in South India: Snapshot of Carbon Dynamics and Bacterial Community Composition
Riverine systems play an important role in the global carbon cycle, and they are considered hotspots for bacterial activities such as organic matter decomposition. However, our knowledge about these processes in tropical or subtropical regions is limited. The aim of this study was to investigate ant...
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| Format: | Article |
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MDPI AG
2020-05-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/12/5/1354 |
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| author | Katrin Premke Gunasekaran Dharanivasan Kristin Steger Kai Nils Nitzsche Vijayan Jayavignesh Indumathi M Nambi Sundaram Seshadri |
| author_facet | Katrin Premke Gunasekaran Dharanivasan Kristin Steger Kai Nils Nitzsche Vijayan Jayavignesh Indumathi M Nambi Sundaram Seshadri |
| author_sort | Katrin Premke |
| collection | DOAJ |
| description | Riverine systems play an important role in the global carbon cycle, and they are considered hotspots for bacterial activities such as organic matter decomposition. However, our knowledge about these processes in tropical or subtropical regions is limited. The aim of this study was to investigate anthropogenically induced changes of water quality, the distribution of selected pharmaceuticals, and the effects of pollution on greenhouse gas concentrations and bacterial community composition along the 800 km long Cauvery river, the main river serving as a potable and irrigation water supply in Southern India. We found that in situ measured pCO<sub>2</sub> and pCH<sub>4</sub> concentrations were supersaturated relative to the atmosphere and ranged from 7.9 to 168.7 μmol L<sup>−1</sup>, and from 0.01 to 2.76 μmol L<sup>−1</sup>, respectively. Pharmaceuticals like triclosan, carbamazepine, ibuprofen, naproxen, propylparaben, and diclofenac exceeded warning limits along the Cauvery. <i>Proteobacteria</i> was the major phylum in all samples, ranging between 26.1% and 82.2% relative abundance, and it coincided with the accumulation of nutrients in the flowing water. Results emphasized the impact of industrialization and increased population density on changes in water quality, riverine carbon fluxes, and bacterial community structure. |
| first_indexed | 2024-03-10T19:55:53Z |
| format | Article |
| id | doaj.art-d081bd43894145ae92d2b409e6ae8aff |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T19:55:53Z |
| publishDate | 2020-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-d081bd43894145ae92d2b409e6ae8aff2023-11-20T00:00:45ZengMDPI AGWater2073-44412020-05-01125135410.3390/w12051354Anthropogenic Impact on Tropical Perennial River in South India: Snapshot of Carbon Dynamics and Bacterial Community CompositionKatrin Premke0Gunasekaran Dharanivasan1Kristin Steger2Kai Nils Nitzsche3Vijayan Jayavignesh4Indumathi M Nambi5Sundaram Seshadri6Department of Chemical Analytics and Biogeochemistry, Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Müggelseedamm 310, 12587 Berlin, GermanyDepartment of Sensing, Information and Mechanization System, Institute of Agricultural Engineering, Agricultural Research Organization, Volcani Center, Rishon LeZion 7528809, IsraelFaculty of Environment and Natural Resources, Chair of Soil Ecology, University of Freiburg, 79085 Freiburg im Breisgau, GermanyBiogeochemistry Research Center, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2-15 Natsushima-cho, Yokosuka 237-0061, JapanEnvironmental and Water Resources Engineering Division, Department of Civil Engineering, Indian Institute of Technology Madras, Chennai 600036, IndiaEnvironmental and Water Resources Engineering Division, Department of Civil Engineering, Indian Institute of Technology Madras, Chennai 600036, IndiaIndigenous and Frontier Technology Research Centre (IFTR), Chennai 600061, IndiaRiverine systems play an important role in the global carbon cycle, and they are considered hotspots for bacterial activities such as organic matter decomposition. However, our knowledge about these processes in tropical or subtropical regions is limited. The aim of this study was to investigate anthropogenically induced changes of water quality, the distribution of selected pharmaceuticals, and the effects of pollution on greenhouse gas concentrations and bacterial community composition along the 800 km long Cauvery river, the main river serving as a potable and irrigation water supply in Southern India. We found that in situ measured pCO<sub>2</sub> and pCH<sub>4</sub> concentrations were supersaturated relative to the atmosphere and ranged from 7.9 to 168.7 μmol L<sup>−1</sup>, and from 0.01 to 2.76 μmol L<sup>−1</sup>, respectively. Pharmaceuticals like triclosan, carbamazepine, ibuprofen, naproxen, propylparaben, and diclofenac exceeded warning limits along the Cauvery. <i>Proteobacteria</i> was the major phylum in all samples, ranging between 26.1% and 82.2% relative abundance, and it coincided with the accumulation of nutrients in the flowing water. Results emphasized the impact of industrialization and increased population density on changes in water quality, riverine carbon fluxes, and bacterial community structure.https://www.mdpi.com/2073-4441/12/5/1354pharmaceuticalcarbon dioxidemethanebacterial communityurbanizationproteobacteria |
| spellingShingle | Katrin Premke Gunasekaran Dharanivasan Kristin Steger Kai Nils Nitzsche Vijayan Jayavignesh Indumathi M Nambi Sundaram Seshadri Anthropogenic Impact on Tropical Perennial River in South India: Snapshot of Carbon Dynamics and Bacterial Community Composition Water pharmaceutical carbon dioxide methane bacterial community urbanization proteobacteria |
| title | Anthropogenic Impact on Tropical Perennial River in South India: Snapshot of Carbon Dynamics and Bacterial Community Composition |
| title_full | Anthropogenic Impact on Tropical Perennial River in South India: Snapshot of Carbon Dynamics and Bacterial Community Composition |
| title_fullStr | Anthropogenic Impact on Tropical Perennial River in South India: Snapshot of Carbon Dynamics and Bacterial Community Composition |
| title_full_unstemmed | Anthropogenic Impact on Tropical Perennial River in South India: Snapshot of Carbon Dynamics and Bacterial Community Composition |
| title_short | Anthropogenic Impact on Tropical Perennial River in South India: Snapshot of Carbon Dynamics and Bacterial Community Composition |
| title_sort | anthropogenic impact on tropical perennial river in south india snapshot of carbon dynamics and bacterial community composition |
| topic | pharmaceutical carbon dioxide methane bacterial community urbanization proteobacteria |
| url | https://www.mdpi.com/2073-4441/12/5/1354 |
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