Ecological Status of Palaquium ravii, an Endangered Endemic Tree, in the Nelliampathy Hills of the Western Ghats, India
DOI:
https://doi.org/10.36808/if/2018/v144i2/122516Keywords:
Distribution, Patchy, Population, Regeneration, RET, Threatened Plants.Abstract
Lack of information makes conservation of plants in Threatened category difficult. Palaquium ravii Sasidh.& Vink is one such 'Endangered' tree from evergreen forests of the Western Ghats of India, which lacks ecological data. The tree has three reports from Western Ghats viz., Peechi, Mlappara and Nelliampathy. We studied population and distribution of the tree in Nelliampathy by exploratory surveys and inventory in the Pulikkalchola forest using 73 samples of 50 x 20 m. We recorded 198 individuals in 48 plots. Diameter class distribution indicated a near stable population. Larger seedlings were very few in numbers. The tree was patchily distributed and small clusters of trees were separated well from other clusters. Comparison of diameter class distribution of P. ravii and another common species, P. ellipticum, between unlogged and selectively logged forest shows that P. ravii will be more susceptible to disturbances of large scale or catastrophe. Though not of immediate concern, the species still faces a bigger threat for its survival from a hydroelectric project that is now shelved. To save the tree in Nelliampathy, forest of the area need to be protected. More studies need to be conducted on this endangered tree to ensure its long term survival under natural conditions.References
Ahmed K., Pant S. and Rinchen T. (2015). Population ecology and regeneration status of Buxus wallichiana (Himalayan Box tree) in RajouriPoonch Districts, Jammu and Kashmir, India: Honing Red List of Plants. Indian Forester, 141 (1): 29-34.
Augustine J. (2002). Some threatened plants collected from Sabarimala and surrounding evergreen forests, Kerala Indian. J. Forestry, 25: 338-340.
Austin D.F. (1981). Are endangered Florida plants really endangered? The Palmetto, 4-6.
Basu A., Sarkar M.K., Muthukrishnan A. and Arockiasamy D.I. (2014). Recovery plan for Bentinckia condapanna Berry: an endemic and threatened tree species (palm) of tropical semi-evergreen forests in southern Western Ghats, India. Indian Forester, 140 (5): 439447.
Chandrasekharan K.P., Moosa M. and Ananthasubramonian A.S. (1977). The first working plan for the Nemmara Forest Division: 1969-70 to 1983-84. Government of Kerala, Trivandrum, 96 pp.
Chantaranothai P. (1998). Palaquium hansenii, a new species of Sapotaceae from Thailand. Nordic J. Botany, 18 (3): 365-367.
Dallmeier F., Kabel M. and Rice R. (1992). Methods for long-term biodiversity inventory plots in protected tropical forests. In: Long-term monitoring of biological diversity in tropical forest areas: Methods for establishment and inventory of permanent plots (Dallmeier, F., Ed.), MAB Digest 11. UNESCO, Paris, 11-46pp..
Davidar P., Mohandass D. and Vijayan S.L. (2007a). Floristic inventory of woody plants in the tropical montane (Shola) forests in the Palni hills of the Western Ghats, India. Tropical Ecology, 48 (1): 15-25.
Davidar P., Arjunan M., Mammen P.C., Garrigues, Puyravaud J.P. and Roessingh K. (2007b). Forest degradation in the Western Ghats biodiversity hotspot: Resource collection, livelihood concerns and sustainability. Current Science, 93(11): 1573-1578.
Gamble J.S. (1921). Family Sapotaceae. Flora of the Presidency of Madras. Vol. 2. Adlard & Sons, London, 2017 pp.
IUCN (2000). The 2000 IUCN Red List of Threatened Species. IUCN, Gland.
IUCN (2012). IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 08 June 2013
Jha C. S., Dutt C.B.S. and Bawa K.S. (2000). Deforestation and land use changes in Western Ghats, India. Current Science, 79(2): 231-237.
Kadur S.V. and Bawa K.S. (2005). Sahyadris: India's Western Ghats- A vanishing heritage. Ashoka Trust for Research in Ecology and the Environment, Bangalore, 240 pp.
Kala C.P. (2004). Assessment of species rarity. Current Science, 86 (8): 1058-1059.
Mani M.S. (1974). Physical features. In: Ecology and biogeography in India (Mani, M.S., Ed.), Dr.W.B. Junk, b.v. Publishers, The Netherlands. 11-59 pp.
Mittermeier R.A., Gil P.R., Hoffman M., Pilgrim J., Brooks T., Mittermeier C.G., Lamoreux J. and da Fonseca G.A.B. (2010). Hotspots revisited: Earth's biologically richest and most endangered terrestrial ecoregions. Conservation International, Virginia, USA, 392 pp.
Myers N., Mittermeier R.A., Mittermeier C.G., da Fonseca G.A.B. and Kent J. (2010). Biodiversity hotspots for conservation priorities. Nature, 403: 853-858.
Pascal J.P. (1988). Wet evergreen forests of the Western Ghats of India: ecology, structure, floristic composition and succession. Institut Français de Pondichéry, India, 345 pp.
Puyravaud J.P., Davidar P., Pascal J.P. and Ramesh B.R. (2003). Analysis of threatened endemic trees of the Western Ghats of India sheds new light on the Red Data Book of Indian plants. Biodiversity and Conservation, 12: 2091-2106.
Prabhakaran G. (2001). Threat to Chalakudy river, Athirapally waterfall. The Hindu, 21 August.
Ramachandran V.S. and Swarupanandan K. (2013). Structure and floristic composition of old-growth (unlogged) wet evergreen forests of Nelliampathy hills, southern Western Ghats. J. Forestry Research, 24(1): 37-46.
Ramachandran V.S. and Swarupanandan K. (2006). Additional notes on the distribution of Palaquium ravii Sasidh. & Vink (Sapotaceae) and local vicariance and endemism in Palaquium. J. Economic and Taxonomic Botany, 30(2): 225-230.
Ramachandran V.S., Swarupanandan K. and Sanjappa M. (2014). Status and distribution of Humboldtia bourdillonii (Leguminosae), an endangered tree of the Western Ghats, India. Tropical Ecology, 55 (1): 87-93.
Ramesh B.R., Pascal J.P. and Nouguier C. (1997). Atlas of Endemics of the Western Ghats (India): Distribution of tree species in the evergreen and semi-evergreen forests. Institut Francais de Pondichery, Pondichery, India. 403 pp.
Roby T.J., Joyce J. and Nair P.V. (2014) Checklist of flora of Myristica Swamps – A critically endangered fresh water ecosystem of Southern Western Ghats of Kerala, India. Indian Forester, 140(6): 608-616.
Royen V. (1960). Revision of the Sapotaceae in the Malaysian area in a wider sense. XXII. Palaquium Blanco. Blumea, 10: 432-609.
Sasidharan N. and Vink W. (1991). A new species of Palaquium Blanco (Sapotaceae) from India. Blumea, 35 (2): 385-387.
Sasidharan N. (2004). Biodiversity documentation for Kerala. Part 6: Flowering plants. Handbook, Kerala Forest Research Institute, Thrissur, India, 702 pp.
WCMC (1998). World Conservation Monitoring Centre. Palaquium ravii. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. <www.iucnredlist.org>. Downloaded on 22 April 2014.
Downloads
Downloads
Published
How to Cite
Issue
Section
License
Unless otherwise stated, copyright or similar rights in all materials presented on the site, including graphical images, are owned by Indian Forester.