1 College of Arts and Sciences, Lyceum of the Philippines University-Cavite, General Trias, Cavite, Philippines

2 College of Science and Computer Studies-Graduate Studies, De La Salle University-Dasmarinas, Cavite, Philippines

3 Botany and National Herbarium Division, National Museum of Natural History, Manila, Philippines


Non-native plants that can cause adverse effects are otherwise known as invasive alien plant species which pose a major threat to plant biodiversity conservation and sustainability. This study is dedicated to determine the plant diversity and to assess the vulnerability of Quezon Protected Landscape, Southern Luzon, the Philippines to invasive alien plant species. Data from 90 10x10 m randomly established plots using the quadrat method showed that there are 318 plant species wherein 208 are native, 100 are non-native, and 10 are invasive. Results from the association of the physicochemical factors and the presence of invasive alien plant species through Spearman rho test revealed that most of the physicochemical factors have significant association except percent slope and hill shade. Soil pH, aspect and number of non-native plants show positive association while soil moisture, leaf litter thickness, elevation, species richness, species evenness, plot species diversity index, and the number of native plants signify negative association. Differences between the plots of with and without invasive alien plant species in physicochemical factors indicate that most of the physicochemical factors have a significant difference between plots of with and without invasive alien plant species except percent slope, hill shade, and aspect. Lastly, the MaxEnt model exemplifies that the most suitable predicted conditions for invasive alien plant species are at the edges of boundary and buffer zones. This study implies that most of the physicochemical factors are linked to the presence of invasive alien plant species and Quezon Protected Landscape has a low vulnerability to invasive alien plant species invasion.

Graphical Abstract

Ecological niche modeling of invasive alien plant species in a protected landscape


  • Out of 318 plant species identified in Quezon Protected Landscape, 208 of those are native species, 100 are non-native species, and 10 are IAPS;
  • The most suitable predicted conditions for IAPS are mostly found at the edges of the boundary and buffer zones of QPL;
  • Quezon Protected Landscape has a low vulnerability to invasive alien plant species with respect to ecological niche modeling.


Main Subjects

Borja, V.G.L.; Magcale-Macandog, D.B.; Lambio, I.A.F.; Brandl, R.; Hotes, S.; Settele, J.; Wiemers, M., (2015). Spatial patterns and plant species associations of coffee (Coffea spp.) along the eastern slopes of Mount Makiling Forest Reserve, Luzon, Philippines.

Brown, R.; Siler, C.D.; Oliveros, C.H.; Esselstyn, J.H.; Diesmos, A.C.; Hosner, P.A.; Linkem, C.W.; Barley, A.J.; Oaks, J.R.; Sanguila, M.B.; Welton, L.J.; Blackburn, D.C.; Moyle, R.G.; Peterson, A.T.; Alcala, A.C., (2013). Evolutionary diversification of vertebrates in the Philippines. Annu. Rev. Ecol. Evol. Syst. 44: 411-435 (25 pages).

Bunyan, M.; Bardhan, S.; Jose, S., (2015). Effect of topography on the distribution of tropical montane forest fragments: a predictive modelling approach. J. Trop. For. Sci. 27(1): 30-38 (9 pages).

CBD, (2009). Invasive alien species: a threat to biodiversity. Convention on Biological Diversity. 413 St. Jacques Street, Suite 800, Montreal, Quebec, Canada H2Y 1N9.

Cheney, C.; Esler, K.J.; Foxcroft, L.C.; van Wilgen, N.J.; McGeoch, M.A., (2018). The impact of data precision on the effectiveness of alien plant control programmes: a case study from a protected area. Biol. Invasions. 20(11): 3227-3243 (17 pages).

Codilla, L.T.; Metillo E.B., (2011). Distribution and abundance of the invasive plant species Chromolaena odorata L. in the Zamboanga Peninsula, Philippines. Int. J. Environ. Sci. Dev. 2(5): 406-410 (5 pages).

Dagamac, N.H.A.; Rea-Maminta, M.A.D.; dela Cruz, T.E.E., (2014). Plasmodial slime molds of a tropical karst forest, Quezon National Park, the Philippines. Pacific Sci., 69(3): 1-22 (22 pages).

Dainese, M.; Kuhn, I.; Bragazza, L., (2014). Alien plant species distribution in the European Alps: influence on species’ climatic requirements. Biol. Invasions. 16: 815-831 (17 pages).

DENR CALABARZON, (2013). Quezon Protected Landscape. Department of Environment and Natural Resources-Region IV-A CALABARZON.

Dickey, J.W.E.; Cuthbert, R.N.; Rea, M.; Laverty, C.; Crane, K.; South, J.; Briski, E.; Chang, X.; Coughlan, N.E.; MacIsaac, H.J.; Ricciardi, A.; Riddell, G.E.; Xu, M.; Dick, J.T.A., (2018). Assessing the relative potential ecological impacts and invasion risks of emerging and future invasive alien species. NeoBiota. 40:1-24 (24 pages).

EEA, (2012). The impacts of invasive alien species in Europe. European Environment Agency. European Union. ISSN 1725-2237.

European Commission, (2013). Science for environment policy thematic issue: invasive alien species.        September 2013 Issue 41.

Foxcroft, L.C.; Spear, D.; van Wilgen, N.J.; McGeoch, M.A., (2018). Assessing the association between pathways of alien plant invaders and their impacts in protected areas. Neobiota 43: 1-25 (25 pages).

ISSG, (2005). Introduction to invasive alien species. Invasive Species Specialist Group.

Joshi, R.C., (2006). Invasive alien species (IAS): concerns and status in the Philippines. Philippine Rice Research Institute (PhilRice).  

Katsanevakis, S.; Wallentinus, I.; Zenetos, A.; Leppakoski, E.; Cinar, M.E.; Ozturk, B.; Grabowski, M.; Golani, D.; Cardoso, C., (2014). Impacts of invasive alien marine species on ecosystem services and biodiversity: a pan-European review.  Aquat. Invasions 9(4): 391-423 (33 pages).

Keong, C.Y., (2015). Sustainable resource management and ecological conservation of mega-biodiversity: the Southeast Asian big-3 reality. Int. J. Environ. Sci. Dev. 6(11):876-882 (7 pages).

Kumschick, S.; Gaertner, M.; Vila, M.; Essl, F.; Jeschke, J.M.; Pysek, P.; Ricciardi, A.; Bacher, S.; Blackburn, T.M.; Dick, J.T.A.; Evans, T.; Hulme, P.E.; Kuhn, I.; Mrugala, A.; Pergl, J.; Rabitsch, W.; Richardson, D.M.; Sendek, A.; Winter, M., (2014). Ecological impacts of alien species: quantification, scope, caveats, and recommendations. Bioscience 65: 55-63 (9 pages).

Masters, G.; Norgrove, L., (2010). Climate change and invasive alien species. CABI working paper 1.

McNeely, J.A., (2001). The great reshuffling: human dimensions of invasive alien species. IUCN, Gland, Switzerland and Cambridge, UK.

McNeely, J.A.; Mooney, H.A.; Neville, L.E.; Schei, P.; Waage, J.K., (2001). A Global Strategy on Invasive Alien Species. IUCN Gland, Switzerland, and Cambridge, UK.

Nijs, I.; Verlinden, M.; Meerts, P.; Dassonville, N.; Domken, S.; Triest, L.; Mahy, G., (2012). Biodiversity impacts of highly invasive plants: mechanisms, enhancing factors and risk assessment. Science for a Sustainable Development (SSD). Belgian Science Policy Avenue Louise 231, Brussels, Belgium.  

Panetta, D.; Gooden, B., (2017). Managing for biodiversity: impact and action thresholds for invasive plants in natural ecosystems. NeoBiota. 34: 53-66 (14 pages). Peerson, G.A.; Weerd, M.V., (2006). Biodiversity and natural resource management in Insular Southeast Asia. Island Stud. J., 1(1): 81-108 (28 pages).

PTFCF, (2015). Status of Philippine Forests. Philippine Tropical Forest Conservation Foundation, Inc.

Pysek, P.; Jarosik, V.; Hulme, P.E.; Pergl, J.; Hejda, M.; Schaffner, U.; Vila, M., (2012). A global assessment of invasive plant impacts on resident species, communities and ecosystems: the interaction of impact measures, invading species' traits and environment. Global Chang Biol., 18(5): 1725–1737 (13 pages).

Reaser, J.K.; Meyerson, L.A.; Cronk, Q.; de Poorter, M.; Elrege, L.G.; Green, E.; Kairo, M.; Latasi, P.; Mack, R.N.; Mauremootoo, J.; O’Dowd D.; Orapa, W.; Sastroutomo, S.; Saunders, A.; Shine, C.; Thrainsson, S.; and Vaiutu, L., (2007). Ecological and Socioeconomic Impacts of Invasive Alien Species in Island Ecosystems. Environ. Conserv., 34(2): 1-14 (14 pages).

Schlaepfer, M.A.; Sax, D.F.; Olden, J.D., (2010). The potential conservation value of non-native species. Conserv. Biol., 25(3): 428-437 (10 pages).

Schultheis, E.H.; MacGuigan, D.J., (2018). Competitive ability, not tolerance, may explain success of invasive plants over natives. Biol. Invasions. 20(10): 2793-2806 (14 pages).

Smith, R.L.; Smith, T.M. (2004). Elements of ecology. 9th Edition. Pearson Education South Asia PTE Ltd. 251-374 (124 pages).

Steinbauer, M.J.; Irl, S.D.H.; Gonzalez-Mancebo, J.M.; Breiner, F.T.; Hernandez-Hernandez, R.; Hopfenmuller, S.; Kidane, Y.; Jentsch, A.; Beierkuhnlein, C., (2017). Plant invasion and speciation along elevational gradients on the oceanic island La Palma, Canary Islands. Ecol Evol. 7(2): 771–779 (9 pages).

Tadiosa, E.R.; Santos, J.M.; Cudiamat, M.A.; Cruzate, S.M.; Arma, E.J.M.; Hilapo, D.C.G.; Biscocho, H.H., (2016). Analysis of the forest and grassland vegetation at Southwestern side of Quezon Protected Landscape, Southern Luzon, Philippines. Int. Assoc. Multidiscip. Res., 19: 53-69 (17 pages).

Theorides, K.A.; Dukes, J.S., (2007). Plant invasion across space and time: factors affecting nonindigenous species success during four stages of invasion. New Phytol., 176: 256-273 (18 pages).

Wamelink, W.; van Dobben, H.F.; Goedhart, P.W.; Jones-Walters, L.M., (2018). The Role of Abiotic Soil Parameters as a Factor in the Success of Invasive Plant Species. Emerging Sci. J., 2(6).

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