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Anthropogenic Impact on Tropical Perennial River in South India: Snapshot of Carbon Dynamics and Bacterial Community Composition

Premke, Katrin ; Dharanivasan, Gunasekaran ; Steger, Kristin ; Nitzsche, Kai Nils ; Jayavignesh, Vijayan ; Nambi, Indumathi M. ; Seshadri, Sundaram (2022):
Anthropogenic Impact on Tropical Perennial River in South India: Snapshot of Carbon Dynamics and Bacterial Community Composition. (Publisher's Version)
In: Water, 12 (5), MDPI, ISSN 2073-4441,
DOI: 10.26083/tuprints-00022533,
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Item Type: Article
Origin: Secondary publication service
Status: Publisher's Version
Title: Anthropogenic Impact on Tropical Perennial River in South India: Snapshot of Carbon Dynamics and Bacterial Community Composition
Language: English
Abstract:

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 pCO₂ and pCH₄ concentrations were supersaturated relative to the atmosphere and ranged from 7.9 to 168.7 µmol L⁻¹ , and from 0.01 to 2.76 µmol L⁻¹ , respectively. Pharmaceuticals like triclosan, carbamazepine, ibuprofen, naproxen, propylparaben, and diclofenac exceeded warning limits along the Cauvery. Proteobacteria 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.

Journal or Publication Title: Water
Volume of the journal: 12
Issue Number: 5
Place of Publication: Darmstadt
Publisher: MDPI
Collation: 20 Seiten
Uncontrolled Keywords: pharmaceutical, carbon dioxide, methane, bacterial community, urbanization, proteobacteria, Cauvery River
Classification DDC: 500 Naturwissenschaften und Mathematik > 550 Geowissenschaften
Divisions: 11 Department of Materials and Earth Sciences > Earth Science > Department of Soil Mineralogy and Soil Chemistry
Date Deposited: 08 Nov 2022 13:19
Last Modified: 08 Nov 2022 13:19
DOI: 10.26083/tuprints-00022533
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-225333
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/22533
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