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UPV Theses and Dissertations

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Adviser: search.filters.advisor.Yunque, Nestor G.SDG: search.filters.sdg.SDG 15 - Life on land

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    Species composition, distribution and abundance of trees on a 4-hectare site adjacent to the football field Area of UPV Miag-ao, Iloilo
    Alpuerto, Elise Raymond C. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2013-04)
    A four-hectare plot adjacent to the Football Field of UPV Miagao was chosen as the study area. The local name and scientific name of each tree in the plot were identified. GBH and height of trees were noted. Basal Area, Index of Dominance, Index of Diversity and Frequency were also noted. In addition, the distribution of trees in relation with soil and air temperature and relative humidity were also noted. Eight hundred fifty-eight trees were identified inside the 4 hectare plot. The trees were identified excluding seedlings of these trees. Twenty species of trees were identified in the sampling site. The top 5 most numerous species are Acacia, “Aratiles", “Mangga", “Kawayan” and “Gmelina”. The computed value of Index of Dominance is higher compared to the Index of Diversity, indicating that the area is not diverse and that certain species dominates the area. The distribution of trees is affected by the temperature ranging from 19.2 C to 39C.
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    A preliminary investigation on the physico-chemical parameters of the habitat and associated flora of Rafflesia sp. along the western side of Sibalom Natural Park
    Alacapa, Lilluck F. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2003-04)
    Rafflesia, bearing the largest flowers in the world, was found to exist in Sibalom Natural Park. In view of efforts to conserve the Rafflesia site, this study entitled, “A preliminary investigation on the physico-chemical parameters of the habitat and associated flora of Rafflesia sp. along the western side of Sibalom Natural Park”, aims to come up with information as to what conditions do these flowers grow and their associated flora. This study hopes to help strengthen biodiversity conservation efforts of the Department of Environment and Natural Resources. The study had ten sampling sites, five of which with the existence of Rafflesia sp. and five of which without Rafflesia sp.. In each of these areas the data gathered were girth of trees, saplings and seedlings, list and number of existing flora within the area, soil pH, soil texture, soil and air temperature, and relative humidity. The study found that the Rafflesia sp. in the Sibalom Natural Park grows at high relative humidity, relatively cool air and soil temperature, in soil with high amounts of clay and nearly neutral pH. The Rafflesia sp., aside from its host vine, exists with the plant locally known as ban-ban. No species of plant was found to dominate the areas where Rafflesia sp. exists.
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    Species composition , abundance and distribution of trees ina 4.3-hectare plot adjacent to the Mat-y gate of the University of the Philippines Visayas Main Campus,Miagao, Iloilo
    Alaban, Annaveve Rose M. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2013-04)
    A 4.3-hectare plot across the UPV tennis court extending to the Mat-y gate of the campus was the area of study. The local names of each tree were identified. The girth- at-breast-height (GBH) and approximate height of trees were also recorded. From the data gathered, the Basal Area, Index of Dominance and Index of Diversity were computed. One thousand one hundred forty-five trees were found in the 4.3-hectare plot comprised of fifteen species of trees commonly known as “Eucalyptus”, “Acacia”, “Kamonsil”, “Narra”, “Mahogany”, “Talisay”, “Payhod”, “Agho”, “Apyan”, “Gmelina”, “Ipil-ipil”, “Bugto-tae”, “Indian Tree”, “Lamnog” and “Tabong”. The value of the Index of Dominance is higher compared to the value of the Index of Diversity, which means that a species is exerting greater influence compared to other species. Eucalyptus is the most dominant tree species in the area of study which is 75.63% of the whole population. The distribution of trees in the 4.3-hectare plot is not random and is mainly influenced by human intervention since it is a secondary forest.