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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.
In: Water, 2020, 12 (5)
doi: 10.26083/tuprints-00022533
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Anthropogenic Impact on Tropical Perennial River in South India: Snapshot of Carbon Dynamics and Bacterial Community Composition
Language: English
Date: 2022
Place of Publication: Darmstadt
Year of primary publication: 2020
Publisher: MDPI
Journal or Publication Title: Water
Volume of the journal: 12
Issue Number: 5
Collation: 20 Seiten
DOI: 10.26083/tuprints-00022533
Corresponding Links:
Origin: Secondary publication service
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.

Uncontrolled Keywords: pharmaceutical, carbon dioxide, methane, bacterial community, urbanization, proteobacteria, Cauvery River
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-225333
Classification DDC: 500 Science and mathematics > 550 Earth sciences and geology
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: 27 Apr 2023 07:38
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/22533
PPN: 507285840
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