Odonata as biological indicator of freshwater ecosystem

Odonata as biological indicator of freshwater ecosystem | 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 Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed.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. 27 January 2025 V1 Latest version Share on Odonata as biological indicator of freshwater ecosystem Authors : Manoj Sharma , Buddhi Oli , and Ishan Gautam 0000-0002-3971-2895 [email protected] Authors Info & Affiliations https://doi.org/10.22541/au.173796429.94457864/v1 721 views 328 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract Odonates are bioindicators as they provide information regarding the ecological conditions of freshwater ecosystems. Freshwater resources are under great anthropogenic pressure due to pollution, sediments, drought, and climate change. To list out odonate species in different types of aquatic environments and to identify indicator species, a total of 12 sampling sites in the Karnali River basin were surveyed using an ocular observation method with the help of a sweeping net for the adults and handpicking to the exuviae. Different ecological indices were calculated for different habitat types and study sites. At the same time, linear relationships between different indices were also evaluated. A total of 88 odonata species belonging to 52 genera and 12 families were recorded. Among them, based on the Odonata Value Index (OVI), 29 species were identified as indicator species, where 16 were specialist species and 13 were habitat indicator species. The odonata species richness was high in the lower elevations and remains scarce in higher elevation levels as they have environmental influence. The biotope diversity of dragonflies is found to be low in all study sites. The dragonfly biodiversity indices, i.e., the Dragonfly Biotic Index (DBI) and Habitat Integrity Index (HII), have a significant influence on each other. The study emphasizes the need for conservation priorities in riparian ecosystems and diverse types of habitats for the odonate community and the probability to use odonates to assess ecosystem health. Key words: Dragonfly, damselfly, bioindicator, ecological indices Supplementary Material File (1. odonata as biological indicator of freshwater ecosystem.doc) Download 989.00 KB File (figures.doc) Download 769.50 KB File (tables.doc) Download 91.00 KB Information & Authors Information Version history V1 Version 1 27 January 2025 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords description ecosystem ecology freshwater invertebrate Authors Affiliations Manoj Sharma Tribhuvan University Institute of Science and Technology View all articles by this author Buddhi Oli Tribhuvan University Institute of Science and Technology View all articles by this author Ishan Gautam 0000-0002-3971-2895 [email protected] Tribhuvan University Institute of Science and Technology View all articles by this author Metrics & Citations Metrics Article Usage 721 views 328 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Manoj Sharma, Buddhi Oli, Ishan Gautam. Odonata as biological indicator of freshwater ecosystem. Authorea . 27 January 2025. DOI: https://doi.org/10.22541/au.173796429.94457864/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. 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