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<p>Climate change and topographic factors pose a significant risk to endemic orchid communities. Understanding the factors that influence the distribution and abundance of priority species is crucial for sustainable management purposes. The present study was carried out to investigate climatic and topographic factors influencing the geographical distribution, abundance, association, and habitat suitability of <i>Aenhenrya rotundifolia</i> in the Southern Western Ghats of India. The presence of species was recorded in the study areas namely, Kalakkad Mundanthurai Tiger Reserve (KMTR) and Megamalai Tiger Reserve. <i>Oplismenus hirsutus</i> Schult., <i>Anoectochilus elatus</i> Lindl., and <i>Curculigo orchioides</i> Gaertn. were identified as closely associated species with more prevalence. The future niche predictions for <i>A. rotundifolia</i> in two time periods (2050 and 2070) using two climate models across three climatic scenarios indicated that suitable habitats are found in the Western Ghats environments, such as KMTR, Megamalai, and Anamalai Tiger Reserve, and Nilgiri Biosphere Reserve. Further, we predict that the species highest range of habitat suitability will be in 2050s, using the GFDL-CM3 model. Therefore, the study suggests that sustainable management measures with reforestation policies are necessary to ensure the availability and ecological importance of the orchid species especially <i>A. rotundifolia</i> in the Southern Western Ghats region.</p>

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Phytosociology and habitat suitability studies on Endemic jewel Orchid Aenhenrya rotundifolia in Southern Western Ghats, India

  • 期刊论文

  • 发表日期：

    2025年1月17日

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  • Subramanian Palaniyappan,
  • Gopalakrishnan Aazhivaendhan,
  • Rajendran Silambarasan,
  • Noyaljohnson Tinoammini,
  • Chinnaiyan Rajasekar,
  • Thiruppathi Senthil Kumar

摘要

Climate change and topographic factors pose a significant risk to endemic orchid communities. Understanding the factors that influence the distribution and abundance of priority species is crucial for sustainable management purposes. The present study was carried out to investigate climatic and topographic factors influencing the geographical distribution, abundance, association, and habitat suitability of Aenhenrya rotundifolia in the Southern Western Ghats of India. The presence of species was recorded in the study areas namely, Kalakkad Mundanthurai Tiger Reserve (KMTR) and Megamalai Tiger Reserve. Oplismenus hirsutus Schult., Anoectochilus elatus Lindl., and Curculigo orchioides Gaertn. were identified as closely associated species with more prevalence. The future niche predictions for A. rotundifolia in two time periods (2050 and 2070) using two climate models across three climatic scenarios indicated that suitable habitats are found in the Western Ghats environments, such as KMTR, Megamalai, and Anamalai Tiger Reserve, and Nilgiri Biosphere Reserve. Further, we predict that the species highest range of habitat suitability will be in 2050s, using the GFDL-CM3 model. Therefore, the study suggests that sustainable management measures with reforestation policies are necessary to ensure the availability and ecological importance of the orchid species especially A. rotundifolia in the Southern Western Ghats region.