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(ISSN:2581-6853; CODEN: GJNRA9; DOI: 10.33002/nr2581.6853) is an international, scientific double blind peer-reviewed open access journal published 3 times a year online by The Grassroots Institute.
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Coordinated and published by The Grassroots Institute, the Grassroots Journal of Natural Resources (GJNR) is an international journal dedicated to the latest advancements in natural resources throughout the world. The goal of this journal is to provide a platform for scientists, social scientists, policy analysts, managers and practitioners (on all academic and professional levels) all over the world to promote, discuss and share various new issues and developments in different arenas of natural resources.
Nowara Tamanna Meghla*1, Akhlaqur Rahman2, Md. Sirajul Islam3
1Department of Environmental Science & Resource Management, Mawlana Bhashani Science and Technology University, Tangail-1902, Bangladesh. Email: ntmeghla@mbstu.ac.bd | ORCID: https://orcid.org/0000-0001-7399-4446
2Department of Environmental Science and Resource Management, Mawlana Bhashani Science and Technology University, Tangail-1902, Bangladesh. Email: dipu11029@gmail.com
3Department of Environmental Science and Resource Management, Mawlana Bhashani Science and Technology University, Tangail-1902, Bangladesh. Email: profmsislam@mbstu.ac.bd | ORCID: https://orcid.org/0000-0002-7560-9334
*Corresponding author
Grassroots Journal of Natural Resources, 9(1): 141-161. Doi: https://doi.org/10.33002/nr2581.6853.090107
Received: 29 December 2025
Reviewed: 02 March 2026
Provisionally Accepted: 19 March 2026
Revised: 28 March 2026
Finally Accepted: 31 March 2026
Published: 29 April 2026
The study was conducted to assess the spatio-temporal variation of the Dhaleshwari River water during monsoon and post-monsoon seasons, and its effects on benthic macro-invertebrates. The study revealed that the mean temperature and DO concentration were decreased, while the mean pH and BOD were increased in the post-monsoon season. The low mean transparency was found due to high TDS content, and EC was within the standard limit in both seasons. The EC increased with increasing TDS content. The mean ionic concentrations of NO3-, NO2-, and NH4+ were found to be 2.8, 1.0, and 1.0 mg/L, respectively, in the monsoon season and 2.0, 0.5, and 1.2 mg/L, respectively, in the post-monsoon season. The river experienced lower DO concentration with higher NH4+ concentration in the post-monsoon season, which could be due to agricultural practices near riverbanks. A total of 7 macroinvertebrate species were found in the Dhaleshwari River. Among them, 5 species are mollusks, namely Thiara scabra, Pila globosa, Brotia costula, Lamellidens marginalis, Corbicula fluminea, and 2 species are arthropods, namely Cybister fimbriolatus and Lamprima aurata, and their abundance was much higher in almost all stations under study. The macroinvertebrates play an important role in the river ecosystem's balance. The overall study presents that the Dhaleshwari River is a rich habitat of benthic macro-invertebrates, and the water quality parameters of the river are within standard limits, indicating suitability for aquatic organisms.
Dhaleshwari River; Physicochemical parameters; Nutrients; Seasons; Macro-invertebrates
Meghla, N.T., Rahman, A. and Islam, M.S. (2026). Bio-Monitoring of Dhaleshwari River Water Quality through Benthic Macro-Invertebrates and Physicochemical Parameters. Grassroots Journal of Natural Resources, 9(1): 141-161. Doi: https://doi.org/10.33002/nr2581.6853.090107
Meghla, N.T., Rahman, A., & Islam, M.S. (2026). Bio-Monitoring of Dhaleshwari River Water Quality through Benthic Macro-Invertebrates and Physicochemical Parameters. Grassroots Journal of Natural Resources, 9(1), 141-161. https://doi.org/10.33002/nr2581.6853.090107
Meghla N.T., Rahman A., Islam M.S. Bio-Monitoring of Dhaleshwari River Water Quality through Benthic Macro-Invertebrates and Physicochemical Parameters. Grassroots Journal of Natural Resources, 2026, 9 (1), 141-161. https://doi.org/10.33002/nr2581.6853.090107
Meghla, Nowara Tamanna, Rahman, Akhlaqur, Islam, Md. Sirajul. 2026. “Bio-Monitoring of Dhaleshwari River Water Quality through Benthic Macro-Invertebrates and Physicochemical Parameters”. Grassroots Journal of Natural Resources, 9 no. 1: 141-161. https://doi.org/10.33002/nr2581.6853.090107
Meghla, Nowara Tamanna, Akhlaqur Rahman and Md. Sirajul Islam. 2026. “Bio-Monitoring of Dhaleshwari River Water Quality through Benthic Macro-Invertebrates and Physicochemical Parameters”. Grassroots Journal of Natural Resources, 9 (1): 141-161. https://doi.org/10.33002/nr2581.6853.090107
| Crossref: | https://doi.org/10.33002/nr2581.6853.090107 |
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© 2026 by the author(s). Licensee Grassroots Journal of Natural Resources. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). We allow to freely share (copy and redistribute the material in any medium or format) and adapt (remix, transform, and build upon the material for any purpose, even commercially) with a legal code: https://creativecommons.org/licenses/by/4.0/legalcode.
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