Diel variation of phytoplankton community influence under varying water quality in the Ganga River at Prayagraj, India

Diel variation of phytoplankton community influence under varying water quality in the Ganga River at Prayagraj, India | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 9 January 2025 V1 Latest version Share on Diel variation of phytoplankton community influence under varying water quality in the Ganga River at Prayagraj, India Authors : Jeetendra Kumar , Arpita Patel , Absar Alam , Vikas Kumar , Venkatesh Thakur , Dharm Jha , Sandeep Mishra , Ram Verma , Sushil Verma , and BASANTA DAS 0000-0002-6629-8992 [email protected] Authors Info & Affiliations https://doi.org/10.22541/au.173640065.53392696/v1 219 views 155 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract The present study examines the diel variation of phytoplankton at Daraganj and Chhatnag, Prayagraj in the Ganga River from December 2020 to April 2021. A total of 57 phytoplankton species were identified including 10 classes (Chlorophyceae, Bacillariophyceae, Cyanophyceae, Trebouxiophyceae, Zygnematophyceae, Coscinodiscophyceae, Cryptophyceae, Euglenophyceae, Dinophyceae and Mediophyceae). Chlorophyceae was the dominant class among phytoplankton followed by Bacillariophyceae and Cyanophyceae. Species richness was highest at 18 o’clock in Daraganj and 6 o’clock at Chhatnag. The high species richness and dominance of Chlorophyceae suggested favourable conditions for green algae, supported by rich nutrient availability. The abundance ranges from 4.0 x105 cells/l to 1.4 x102 cells/l at Daraganj and 2.5 x 105 to 2.3 x102 at Chhatnag. The highest mean phytoplankton abundance was observed at 12 o’clock in both stations suggesting high photosynthesis. Cyclotella sp. was the most dominant species, followed by Scenedesmus ellipticus at both stations. Pearson correlation coefficient of Bacillariophyceae, Chlorophyceae, Cyanophyceae, Dinophyceae, Mediophyceae, Trebouxiophyceae and Zygnematophyceae exhibited a strong positive association with dissolved oxygen (DO) (p < 0.05) and negative relationship with total dissolved solids (TDS) (p < 0.01). Coscinophyceae and Cryptophyceae demonstrated significant negative correlations with TDS (p<0.05). This study underscores the resilience of phytoplankton in response to environmental changes and emphasizes their role as bioindicators for assessing the ecological health of river ecosystems. Supplementary Material File (diel variation_manuscript.docx) Download 63.08 KB File (figure.pdf) Download 969.25 KB Information & Authors Information Version history V1 Version 1 09 January 2025 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords 15: freshwater (lake 29: plankton 36: biodiversity 6: community ecology 7: ecosystem ecology diel variation diversity indices ganga river physico-chemical parameters phytoplankton stream) Authors Affiliations Jeetendra Kumar ICAR - CIFRI Prayagraj View all articles by this author Arpita Patel ICAR - CIFRI Prayagraj View all articles by this author Absar Alam ICAR - CIFRI Prayagraj View all articles by this author Vikas Kumar ICAR - CIFRI Prayagraj View all articles by this author Venkatesh Thakur ICAR - CIFRI Prayagraj View all articles by this author Dharm Jha ICAR - CIFRI Prayagraj View all articles by this author Sandeep Mishra ICAR - CIFRI Prayagraj View all articles by this author Ram Verma ICAR - CIFRI Prayagraj View all articles by this author Sushil Verma ICAR - CIFRI Prayagraj View all articles by this author BASANTA DAS 0000-0002-6629-8992 [email protected] ICAR - CIFRI View all articles by this author Metrics & Citations Metrics Article Usage 219 views 155 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Jeetendra Kumar, Arpita Patel, Absar Alam, et al. Diel variation of phytoplankton community influence under varying water quality in the Ganga River at Prayagraj, India. Authorea . 09 January 2025. DOI: https://doi.org/10.22541/au.173640065.53392696/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . 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