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UPV Theses and Dissertations

Permanent URI for this communityhttps://hdl.handle.net/20.500.14583/10

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Adviser: search.filters.advisor.Yunque, Nestor G.Degree: search.filters.degree.Bachelor of Science in Biology

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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.
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    Species composition, abundance, and distribution of sea anemone in the intertidal zones of Taklong Island and vicinity, Nueva Valencia, Guimaras
    Arisola, Danielle Vanessa E. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2007-04)
    Sea anemones are large solitary polyps that inhabit marine environments. They are the ocean dwelling members of Class Anthozoa under Phylum Cnidaria. These carnivorous animals are common along sea shores, in bays and estuaries but are never found in fresh waters. Sea anemones form a symbiotic relationship with many other marine animals which include anemonefishes and anemoneshrimps. Due to the very little information known about sea anemones in the Philippines, this study was conducted, which specifically focuses on the species composition, abundance, and distribution of sea anemones along the intertidal zones of Taklong Island and vicinity, Nueva Valencia, Guimaras. A total census was done along the intertidal areas around Taklong Island which includes five specific areas namely, Salangan (UP channel), Likuan (area from Salangan going to Takpan-lapad), Takpan-lapad, Kalaparan, and Talisay Cove; and Piagao Cove of Tandog Island. Five out of the 10 host species of sea anemone are found along the intertidal zones of Taklong Island and vicinity: Entacmea quadricolor and Macrodactyla doreensis which belong to the family Actiniidae; Heteractis crispa and Stichodactyla gigantea which belong to the family Stichodactylidae and Cryptodendrum adhaesivum which belongs to the family Thalassianthidae. Heteractis crispa was the most dominant species, comprising 77% of the total sea anemone population, followed by Stichodactyla gigantea with 11%, then by Entacmea quadricolor and Cryptodendrum adhaesivum with 5%. Macrodactyla doreensis was the rarest species comprising only 1.3% of the total population. All 5 species of sea anemones were host anemones that harbored a variety of marine organisms namely anemoneshrimps, clownfishes (Amphiprion clarkii, A. frenatus, A. perideraion, A. ocellaris, and Premnas biaculeatus) and an anemonefish Dascyllus trimaculatus. Some of these anemone-fish relationships are specific, such as the relationship of Amphiprion frenatus to Entacmea quadricolor. The different species of sea anemones varied in their locations, some species are located only in sandy substrates, some only in coralline substrates and some in both. Distribution of each species along the 6 areas included in the intertidal zones of Taklong Island and vicinity also varied. Species such as Cryptodendrum adhaesivum and Macrodactyla doreensis were found only in Talisay Cove while the other species were distributed along the 6 areas. Piagao Cove contained only Heteractis crispa and Talisay Cove contained all 5 species.