Abstract
Bauhinia vahlii Wight & Arn. is an important multipurpose, woody climber used by the rural communities in India for various economic activities as well as for medicinal purposes. Indiscriminate extraction of the woody climber has led to population decline in its distribution range. Climate change has further led to the amplification leading to drastic decline of the natural populations. Therefore, the present study aimed to map the potential distribution of B. vahlii in India using ecological niche modelling (ENM) tools for the current and future climate change scenarios using RCP 2.6 and RCP 8.5. The maximum entropy model was performed using presence-only data of a total of 38 non-overlapping occurrence points obtained from multiple authenticated online portals and through a detailed field investigation. A rise in very high probable zones was observed under both the future climate change scenarios by 0.2% (RCP 2.6) and 0.5% (RCP 8.5) area increase compared to the current climatic scenario. The areas of moderately probable zones pose an increase by 4.5% in RCP 2.6 and a slight decrease by 0.4% in RCP 8.5, while the least probable zones were found to be decreasing in both the cases by 7.3% and 3.6%, respectively. It is predicted that B. vahlii will respond variably under different climate change scenarios based on the species' response to the variations in bioclimatic variables. The predicted impacts of climate change need to be integrated for conservation and management of this economically important, multipurpose woody climber. There is an urgent need for immediate policy intervention and implementation to save this species from the increasing anthropogenic pressure for various economic purposes.
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Acknowledgements
The support and assistance provided by the Jharkhand State Forest Department, Ranchi, and the local people, and Mr. Akash Nag's involvement during the field survey is highly acknowledged. Author PS also acknowledges the financial support in the form of R&D project under UGC-BSR Research Start-up Grant (Ref. No. F.30-14/2014(BSR) dated 22nd July 2014).
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This is the outcome of UGC-BSR Research Start-up Grant sanctioned to Dr. Purabi Saikia (Ref. No. F.30–14/2014(BSR) dated 22nd July 2014).
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KKT participated in the field data collection, analyses, and interpretation, and drafted the manuscript; PB analyzed, and interpreted data and drafted the manuscript; AK helped in analyses and preparation of maps and also in finalizing the manuscript; PS & GR conceived the study, and also finalized the manuscript. All authors read and approved the final manuscript.
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Thakur, K.K., Bhat, P., Kumar, A. et al. Distribution mapping of Bauhinia vahlii Wight & Arn. in India using ecological niche modelling. Trop Ecol 63, 286–299 (2022). https://doi.org/10.1007/s42965-021-00197-8
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DOI: https://doi.org/10.1007/s42965-021-00197-8
Keywords
- Climate change scenarios
- MaxEnt
- Population mapping
- RCP 2.6
- RCP 8.5