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β-diversity of odonate community of the Ganga River: partitioning and insights from local and species contribution

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Abstract

The β-diversity studies reveal diversity patterns at a spatial scale and strengthen the process of regional diversity conservation. The aim of the current study was to understand the pattern of local contribution to β-diversity (LCBD) and species contribution to β-diversity (SCBD) of odonates in the Ganga River. We selected 27 sites along the banks of the Ganga River for the study, with an average distance between sites of 75 km, and recorded 30 species of odonate (species richness between 5 and 24) at these sites. Using β-regression analysis, we examined the impact of species richness and habitat variables on the LCBD. The LCBD was found to be negatively correlated with species richness and influenced by creeping macrophytes, water temperature, dissolved oxygen and salinity. We found that species with high SCBD scores (above 0.05) had intermediate occupancy (between 10 and 16 sites), including 5 species of dragonfly and 5 species of dragonfly, and that the second-degree term the relationship between SCBD and the number of declared locations better stocked with species than in the first degree. Since the SCBD is responsible for identifying species that make the greatest contribution to β-diversity and the LCBD is responsible for identifying sites with particular combinations of species, the combined approach using both should be included for ecological assessments, river biodiversity restoration and maintenance plans.

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The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

This study was carried out under the projects “Biodiversity conservation and Ganga rejuvenation” and “Planning and Management for Aquatic Species Conservation and Maintenance of Ecosystem Services in the Ganga River Basin” funded by the National Mission for Clean Ganga (NMCG), Ministry of Jal Shakti, Government of India. We express our gratitude to Shri G. Asok Kumar, Director General (DG), NMCG, Mr. Rajiv Ranjan Mishra and Mr. Upendra Prasad Singh, Former DGs, and their team for extending funding support. We would like to thank the Chief Wildlife Warden of the Government of Uttar Pradesh, Bihar, Jharkhand and West Bengal for providing and facilitating timely research permits to conduct the study. We acknowledge the help and support provided by the Director and Dean at the Wildlife Institute of India in carrying out this study.

Funding

This study was funded by the National Mission for Clean Ganga (NMCG), Ministry of Jal Shakti, Government of India (Grant No. B-02/2015-16/1259/NMCG-WII PROPOSAL and B-03/2015-16/1077/NMCG-NEW PROPOSAL).

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Contributions

KD: Conceptualization, Data curation, Formal Analysis, Investigation, Methodology, Software, Validation, Visualization, Writing – original draft; DD: Data curation, Investigation, Methodology, Validation; MS: Data curation, Investigation, Methodology, Validation; VPU: Project administration, Resources, Supervision, Validation, Writing – review & editing; BSA: Project administration, Resources, Supervision, Validation, Writing – review & editing; JAJ: Project administration, Resources, Supervision, Validation, Writing – review & editing; SAH: Funding acquisition, Project administration, Resources, Supervision, Validation, Writing – review & editing.

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Correspondence to Kritish De.

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De, K., Dey, D., Shruti, M. et al. β-diversity of odonate community of the Ganga River: partitioning and insights from local and species contribution. Wetlands Ecol Manage 31, 899–912 (2023). https://doi.org/10.1007/s11273-023-09959-8

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  • DOI: https://doi.org/10.1007/s11273-023-09959-8

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