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Study of orchids (Orchidaceae) distribution and richness for conservation implications in Tripura, North East India

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Abstract

A total of 51 orchid species have been identified, in 105 locations of Tripura. Orchid species such as Acampe praemorsa, Aerides odoratum, Cymbidium aloifolium, Dendrobium aphyllum, Micropera pallida, Papilionanthe teres, Rhynchostylis retusa are distributed throughout the state.19 orchid species became rare from the orchid flora of Tripura. The study also includes the effect of elevation gradient, temperature and precipitation on orchid species richness in Tripura. We estimate maximum orchid richness at an elevation range of 500–939 m, a temperature range of 21.23–23.16 °C and a precipitation range of 2750.89–3357.0 mm. The maximum species richness (28 epiphytes and 5 terrestrial orchid species) and distribution were found in the Jampui hill region of North Tripura. A significant positive correlation was observed with elevation, precipitation and orchid richness. The present study will help to understand the habitat suitability and species re-introduction program, especially for Tropical lowland orchid conservation.

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Acknowledgements

Authors are grateful to DBT, Government of India, New Delhi for financial support through the Project entitled “Orchid bio-resources of the Northeast India Conservation, database development and information networking” (Sanction letter No. BCIL/NER-BPMC/2016). The authors are also thankful to the Head of the Department of Botany, Tripura University for providing the necessary research facilities. The authors are also thankful to Mr. Stabak Roy, Research Scholar, Department of Geography, Tripura University, for making the map and also sharing his valuable knowledge about GIS. We also want to acknowledge Mr. Asish kumar Chowdhury, Mr. Dipan Sarma and Mr. Mantosh Roy, for their helping hands during the field study.

Funding

This work was supported by DBT, Government of India, New Delhi (Sanction letter No. BCIL/NER-BPMC/2016).

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Contributions

BB conceived the idea of the study and designed the manuscript. BB has done field study and collected GPS data and other ecological data. All specimens were also identified by BB. Statistical analysis performed by SP and BBK. BBK and MR helped during the field survey and specimen collection. BKD and KM supervised the study and KM also gave the idea to study the environmental factors. BB prepared the initial draft, SP and BBK edited the manuscript. BB makes the final draft and all authors have read and approved the final version of the manuscript.

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Correspondence to Biswajit Baishnab.

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The authors affirm that there are no conflicts of interest in the publication of this paper. The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. The authors declare that the article is purely original and has not been published elsewhere previously.

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Baishnab, B., Majumdar, K., Banik, B. et al. Study of orchids (Orchidaceae) distribution and richness for conservation implications in Tripura, North East India. Vegetos (2024). https://doi.org/10.1007/s42535-023-00786-z

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