J. Bio. Env. Sci.13(2), 225-236, August 2018
A growing problem for the vast extents of diverse tropical forests in the Philippines is degraded every year due to booming population and introduction of invasive alien plants (IAPs). This study aimed to (1) assess the impacts of anthropogenic activities on the propagation of IAPs; (2) identify the resident’s purpose of utilizing IAPs; (3) identify the least and most invasive life forms in response to anthropogenic activities that are present in highly disturbed (S1) and less disturbed sites (S2) of Mt. Manunggal, Cebu Island, Philippines. Both sites were sampled by establishing four quadrats per transect and tallying each plant per quadrat to identify its total abundance per species last October-November, 2016. Residents were also interviewed to identify how IAPs were utilized and to show the relationship of anthropogenic activities and IAPs in S1 and S2. Linear regression analysis revealed that as anthropogenic activities increased, high patronization of the IAPs were also observed in Mt. Manunggal, Cebu Island, Philippines. High IAP consumption was enough to address the immediate needs of the residents, which in turn exacerbate the spread and establishment of IAPs in both sites. At present levels, grasses and herbs were seen to be the most invasive life forms with largest impact in S1 and S2. The direct relationship between anthropogenic activities and IAPs could result in a dramatic rise of alien plants, and may intensify risks of impacts on native plants and its ecosystem.
Almeida WR, Lopes AV, Tabarelli M, Leal IR. 2015. The alien flora of Brazilian Caatinga: deliberate introductions expand the contingent of potential invaders. Biological invasions 17(1), 51-56. https://doi.org/10.1007/s10530-014-0738-6
AlsosIG, Ware C, Elven R. 2015. Past Arctic aliens have passed away, current ones may stay. Biological invasions 17(11), 3113-3123. https://doi.org/10.1007/s10530-015-0937-9
Bais HP, Broeckling CD, Vivanco JM. 2008. Root exudates modulate plant microbe interactions in the rhizosphere. Secondary metabolites in soil ecology. Springer, Berlin, Heidelberg, 241-252. https://doi.org/10.1007/978-3-540-74543-3_11
Bradley BA, Houghton RA, Mustard JF, Hamburg SP. 2006. Invasive grass reduces aboveground carbon stocks in shrublands of the Western US. Global Change Biology 12(10), 1815-1822. https://doi.org/10.1111/j.1365-2486.2006. 01232.x
Cadotte MW, Murray BR, Lovett-Doust J. 2006. Ecological patterns and biological invasions: using regional species inventories in macroecology. Biological invasions 8(4), 809-821. https://doi.org/10.1007/s10530-005-3839-4
Center for Invasive Plant Management. 2007. Invasive Plant and the 2007 Farm Bill Workshop Results. 333 Leon Johnson Hall Montana State University Bozeman (406), 994-5557.
Chamier J, Schachtschneider K, Le Maitre DC, Ashton PJ, Van Wilgen BW. 2012. Impacts of invasive alien plants on water quality, with particular emphasis on South Africa. Water SA 38(2), 345-356. https://doi.org/10.4314/wsa. v38i2.19
Charles J, Dukes JS. 2007. Impacts of invasive species on ecosystem services. Biological invasions 217-237. https://doi.org/10.1007/978-3-540-36920-2_13
Daehler CC, Carino DA. 1999. Threats of invasive plants to the conservation of biodiversity. Biodiversity and allelopathy: from organisms to ecosystems in the Pacific. Academia Sinica, Taipei, 21-27.
Denslow JS. 2003. Weeds in paradise: thoughts on the invasibility of tropical islands. Annals of the Missouri Botanical Garden, 119-127. https://doi.org/10.2307/3298531
Ecological Society of America. 2004. Invasive Species. [Internet] Available from: ERDB. 2009. www.esa.org/education/edupdfs/invasion.pdf
Frenot Y, Chown, SL, Whinam J, Selkirk PM, Convey P, Skotnicki M, Bergstrom DM. 2005. Biological invasions in the Antarctic: extent, impacts and implications. Biological reviews 80(1), 45–72. https://doi.org/10.1017/S1464793104006542
Fried G, Laitung B, Pierre C, Chagué N, Panetta FD. 2014. Impact of invasive plants in Mediterranean habitats: disentangling the effects of characteristics of invaders and recipient communities. Biological invasions 16(8), 1639-1658. https://doi.org/10.1007/s10530-013-0597-6
Higgins SI, Richardson DM.1999. Predicting plant migration rates in a changing world: the role of long-distance dispersal. The American Naturalist 153(5), 464-475. https://doi.org/10.1086/303193
Huang QQ, Qian C, Wang Y, Jia X, Dai XF, Zhang H, Wang GX. 2010. Determinants of the geographical extent of invasive plants in China: effects of biogeographical origin, life cycle and time since introduction. Biodiversity and conservation 19(5), 1251-1259 https://doi.org/10.1007/s10531-009-9751-y
Huiskes, AH, Gremmen NJ, Bergstrom DM, Frenot Y, Hughes KA, Imura S, Ware C. 2014. Aliens in Antarctica: assessing transfer of plant propagules by human visitors to reduce invasion risk. Biological conservation 171, 278-284. https://doi.org/10.1016/j.biocon.2014.01.038
International Union for Conservation of Nature. 2000. IUCN guidelines for the prevention of biodiversity loss caused by alien invasive species. Aliens 11-15.
Joshi RC. 2006. Invasive alien species (IAS): concerns and status in the Philippines. In Proceedings of the International Workshop on the Development of Database (APASD) for Biological Invasion. FFTC, Taichung, Taiwan, China 1-23.
Keane RM, Crawley MJ. 2002. Exotic plant invasions and the enemy release hypothesis. Trends in Ecology & Evolution 17(4), 164-170. https://doi.org/10.1016/S0169-5347(02)02499-0
LiuJ, Ouyang Z, Pimm SL, Raven PH, Wang X, Miao H, Han N. 2003. Protecting China’s biodiversity. Science 300(5623), 1240-1241. https://doi.org/10.1126/science.1078868
Lloret F, Médail F, Brundu G, Camarda I, Moragues EVA, Rita J, Hulme PE. 2005. Species attributes and invasion success by alien plants on Mediterranean islands. Journal of Ecology 93(3), 512-520. https://doi.org/10.1111/j.1365-2745.2005. 00979.x
Magee TK, Ringold PL, Bollman MA, Ernst TL. 2010. Index of alien impact: a method for evaluating potential ecological impact of alien plant species. Environmental management 45(4), 759-778. https://doi.org/10.1007/s00267-010-9426-1
Malavasi M, Carboni M, Cutini M, Carranza ML, Acosta AT. 2014. Landscape fragmentation, land-use legacy and propagule pressure promote plant invasion on coastal dunes: a patch-based approach. Landscape ecology 29(9), 1541-1550. https://doi.org/10.1007/s10980-014-0074-3
Pyšek P, Richardson DM. 2006. The biogeography of naturalization in alien plants. Journal of Biogeography 33(12), 2040-2050. https://doi.org/10.1111/j.1365-2699.2006. 01578.x
Rasingam L, Parthasarathy N. 2009. Diversity of understory plants in undisturbed and disturbed tropical lowland forests of Little Andaman Island, India. Biodiversity and Conservation 18(4), 1045-1065. https://doi.org/10.1007/s10531-008-9496-z
Rejmanek M. 1996. Species richness and resistance to invasions. In Biodiversity and ecosystem processes in tropical forests. Springer, Berlin, Heidelberg. 153-172. https://doi.org/10.1007/978-3-642-79755-2_8
Rojas-Sandoval J, Acevedo-Rodríguez P. 2015. Naturalization and invasion of alien plants in Puerto Rico and the Virgin Islands. Biological invasions 17(1), 149-163. https://doi.org/10.1007/s10530-014-0712-3
Sala OE, Chapin FS, Armesto JJ, Berlow E, Bloomfield J, Dirzo R, Leemans R. 2000. Global biodiversity scenarios for the year 2100. Science 287(5459), 1770-1774. https://doi.org/10.1126/science.287.5459.1770
Sanz-Elorza M, Mateo RG, Bernardo FG. 2009. The historical role of agriculture and gardening in the introduction of alien plants in the western Mediterranean. Plant ecology 202(2), 247. https://doi.org/10.1007/s11258-008-9474-2
Sugiura S, Tsuru T, Yamaura Y, Hasegawa M, Makihara H, Makino SI. 2008. Differences in endemic insect assemblages among vegetation types on a small island of the oceanic Ogasawara Islands. Entomological Science 11(2), 131-141. https://doi.org/10.1111/j.1479-8298.2008. 00263.x
Wikum DA, Shanholtzer GF 1978. Application of the Braun-Blanquet cover-abundance scale for vegetation analysis in land development studies. Environmental management 2(4), 323-329. https://doi.org/10.007/BF01866672
Yamashita N, Tanaka N, Hoshi Y, Kushima H, Kamo K. 2003. Seed and seedling demography of invasive and native trees of subtropical Pacific islands. Journal of Vegetation Science 14(1), 15-24. https://doi.org/10.1111/j.1654-1103.2003.tb02123.x