BIOTA Philippines Conference System, 52nd BIOTA Annual National Convention and Scientific Sessions

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Impact of Invasive Species on Biodiversity in Buhisan Watershed, Cebu
Esperanza M. Del Fierro, Earl John Paul M. Amores, Pedrito C. Pontillas

Last modified: 2017-03-15

Abstract


Invasive species possess the ability to threaten native species. There is a need to assess the invasive species in an area in order to determine their impact to biodiversity. Buhisan Watershed is a protected area of DENR and has been found to have five plant species which are invasive in nature. In this study, experimental research design was employed. The five species were assessed using the modified Invasive Species Impact Rank (I-Rank) that categorized the species potential for negative impact on natural biodiversity as high, medium, low, or insignificant. I-Rank has two sections: Section one (Ecological Impact) and Section two (Current Distribution and Abundance). Random sampling method was employed in data collection. Three sites were selected having different elevations. Results showed that only Chromolaena odorata have an I-rank of low significance. While, Gmelina arborea, Leucaena leucocephala, Swietenia and Tectona grandis resulted to an I-rank of insignificant. This implies that these plants identified as invasive do not cause harm to the existing biodiversity in the watershed. Thus, they do not out-compete the native plants.


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