Identifying Protected Areas Suitable for Conservation of Cycas pectinata Buch. Ham. in Southeast Asia Under Climate Change Scenario

Aditya Pradhan, Arun Chettri


Cycads are considered one of the most threatened groups of plants, with 62 % of all species listed on the IUCN Red List. Therefore in order to implement sustainable conservation strategy, it is imperative to understand the impacts of changing climate on both ecosystem and at species level. We therefore presented an assessment on current and future habitat suitability distribution of Cycas pectinata Buch.-Ham., using a maximum entropy (MaxEnt) species distribution model. The projected future distribution map was then overlaid onto protected areas of Southeast Asia for further analysis. Out of 1938 protected areas identified in the 10 southeast countries, only 190 protected areas would remain suitable by the end of 2050 under climate change scenario (RCP 2.6, RCP 4.5, RCP 6.0 and RCP 8.5). The MaxEnt model performed better than random with an average test AUC value of 0.975 (±0.001). The AUC values thus confirm the accuracy of model prediction based on 73 occurrence points. A significant reduction in the suitable habitat was also observed under future climate change scenario, as a result of which the species may not be able to adapt to modification caused by climate change further leading to reduction in population size.


Climate change, Cycads, ENM, MaxEnt, Protected area, Vulnerable


Bakkenes, M.; Alkemade, J. R. M.; Ihle, F.; Leemans, R. and Latour, J. B. 2002. Assessing effects of forecasted climate change on the diversity and distribution of european higher plants for 2050. Global Change Biology 8: 390–407.

Beltramino, A. A.; Vogler, R. E.; Gregoric, D. E. G. and Rumi, A. 2015. Impact of climate change on the distribution of a giant land snail from south america : predicting future trends for setting conservation priorities on native malacofauna. Climatic Change 131: 621–633.

Bhuju, D.R. and Joshi, G.P. 2009. Records of Cyathea spinulosa Wallich ex Hooker (cyatheaceae) and Cycas pectinata Griff. (Cycadaceae) from the Churiya hills of eastern nepal. Nepal Journal of Science and Technology 10: 69–72.

Botkin, D.B.; Saxe, H.; Araujo, M.B.; Betts, R.; Bradshaw, R.H.W.; Cedhagen, T.; Chesson, P.; Dawson, T.P.; Etterson, J.R.; Faith, D.P.; Ferrier, S.; Guisan, A.; Hansen, A.S.; Hilbert, D.W.; Loehle, C.; Margules, C.; New, M.; Sobel, M.J. and Stockwell, D.R.B. 2007. Forecasting the effects of global warming on biodiversity. Bio Science 57: 227–236.

Callmander, M.W.; Schatz, G.E.; Ii, P.P.L.; Laivao, M.O.; Raharimampionona, J.; Andriambololonera, S.; Raminosoa, T. and Consiglio, T.K. 2007. Identification of priority areas for plant conservation in madagascar using red list criteria : rare and threatened pandanaceae indicate sites in need of protection. Oryx 41: 168–176.

Cordellier, M. and Prenninger, M. 2009. Inferring the past to predict the future: climate modelling predictions and phylogeography for the freshwater gastropod, Radix balthica (Pulmonata, Basommatophora). Molecular Ecology 18: 534–544.

Elithet, A. L. 2006. Novel methods improve prediction of species ’ distributions from occurrence data. Ecography 2: 129–15.

Hijmans, R. J.; Cameron, S. E; Para, J. L.; Jones, P. G. and Jarvis, A. 2005. Very high resolution interpolated climate surfaces for global land areas. International Journal of Climatology 25: 1965–1978.

Hijmans, R. J.; Guarino, L.; Cruz, M. and Rojas, E. 2001. Computer tools for spatial analysis of plant genetic resources data : 1 . DIVA-GIS. Plant Genetic Resources Newsletter 127: 15-19.

IPCC. 2007: Climate Change 2007: Impacts, Adaptation and Vulnerability. Contribution of Working Group II to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change (Parry, M.L.; Canziani, O.F.; Palutikof, J.P.; van der Linden, P.J. and Hanson,C.E., Editors). Cambridge University Press, Cambridge, U.K. 976 pages.

Iverson, L. R. and Prasad, A. M. 2001. Projected effects of climate change on patterns of Vertebrate and tree species richness in the conterminous United States. Ecosystems 4: 216–225.

Khuraijam, J. and Singh, R. 2015. Ethnobotany of Cycas pectinata Buch. Ham. in Northeast India. Encephalartos 119: 18-23.

Kumar, S. and Stohlgren, T. J. 2009. Maxent Modeling for predicting suitable habitat for threatened and endangered tree canacomyrica monticola in new caledonia. Journal of Ecology and Natural Environment 1: 94–98.

Marti, E.; Peterson, A. T.; Servi, J. I. and Kiff, L. F. 2006. Ecological niche modelling and prioritizing areas for species reintroductions. Oryx 40: 411–418.

Mihoub, J.B.; Jiguet, F.; Lecuyer, P.; Eliotout, B. and Sarrazin, F. 2014. Modelling nesting site suitability in a population of reintroduced eurasian black vultures, Aegypius monachus in the Grands Causses, France. Oryx 48: 116–124.

Moss, R.H.; Edmonds, J.A.; Hibbard, K.A.; Manning, M.R.; Rose, S.K.; Van vuuren, D.P.; Carter, T.R.; Emori, S.; Kainuma, M.; Kram, T.; Meehl, G.A.; Mitcell, J.F.B.; Nakicenovic, N.; Riahi, K.; Smith, S.J.; Stouffer, R.J.; Thomson, A.M.; Weyant, J.P .and Wilbanks, T.J. 2010. The next generation of scenarios for climate change research and assessment. Nature 463: 747–756.

Nagalingum, N.S.; Marshall, C.R.; Quental, T.B.; Rai, H.S.; Little, D.P. and Mathews, S. 2011. Recent synchronous radiation of a living fossil. Science 334(6057): 796-799.

Nguyen, A. 2010. Cycas pectinata. The IUCN red list of threatened species 2010: e.t42062a10617695.

Pearson, R.G.; Raxworthy, C.J.; Nakamura, M. and Peterson, A.T. 2007. Predicting species distributions from small numbers of occurrence records : a test case using cryptic geckos in Madagascar. Journal of Biogeography 34: 102–117.

Peterson, A.T. 2006. Uses and requirements of ecological niche models and related distributional models. Biodiversity Informatics 3: 59–72.

Phillips, J.S. and Dudik, M. 2008. Modeling of species distributions with maxent : new extensions and a comprehensive evaluation. Ecography 31: 161–175.

Phillips, S.J.; Anderson, R.P. and Schapire, R. E. 2006. Maximum entropy modeling of species geographic distributions. Ecological Engineering 190: 231–259.

Prathapan, K.D. 2006. Conservation of cycads in India. Current Science 91: 862–863.

Singh, K.J. and Singh, R. 2014. Population assessment and distri-bution of Cycas pectinata Buchanan-Hamilton in Northeast India. Pleione 8: 17–25.

Svenning, J. C.; Kerr, J.; Rahbek, C. 2009. Predicting future shifts in species diversity. Ecography 32: 3–4.

Thomas, C.D.; Cameron, A.; Green, R.E.; Bakkenes, M.; Beaumont, L.J.; Collingham, Y.C.; Erasmus, B.F.N.; Siqueira, M.F.; Grainger, A.; Hannah, L.; Hughes, L.; Huntley, B.; Jaarsveld, A.S.; Midgley, G.F.; Miles, L.; Ortega-Huerta, M.A.; Peterson, A.T.; Phillips, O.L.and Williams, S.E. 2004. Extinction risk from climate change. Nature 427: 145–148.

Thompson, I.; Mackey, B.; Mcnulty, S. and Mosseler, A. 2009. Forest Resilience, Biodiversity, and Climate Change. A Synthesis of the Biodiversity/Resilience/Stability Relationship in Forest Ecosystems. CBD Technical Series no. 43. Secretariat of the Convention on Biological Diversity, Montreal. 67 pages.

Thuiller, W.; Lavorel, S.; Araujo, M. B.; Sykes, M. T. and Prentice, I. C. 2005. Climate change threats to plant diversity in Europe. Proceedings of the National Academy of Sciences 102: 8245–8250.

UNEP-WCMC. 2012. Data Standards for the World Database on Protected Areas. UNEP=WCMC., U.K. 15 pages.

Upadhaya, K.; Thapa, N.; Lakadong, N.J.; Barik, S.K. and Sarma, K. 2016. Priority areas for conservation in northeast india : a case study in Meghalaya based on plant species diversity and endemism. International Journal of Ecology and Environmental Sciences 39: 125–136.

Warren, D.L.; Glor, R.E. and Turelli, M. 2010. Enmtools: a toolbox for comparative studies of environmental niche models. Ecography 33: 607–611.

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