Theses and Dissertations

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Browsing Theses and Dissertations by Author "Alfredo D. Abad Jr."

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    Assessment of insects diversity in the ecotone of Sitio Bulac, Barangay General Luna, Carranglan Nueva Ecija
    (2018) Alfredo D. Abad Jr.
    Researches in the past decades had focused on distinct ecological regions, communities, and ecosystem but areas of transition between these regions have received much less attention. In the face of global climate and environmental changes it has been argued that ecotones deserve special conservation investment, potentially being speciation and biodiversity hotspots that hold relatively resilient populations. This study aimed to assess the diversity of insects in the forest grassland ecotone of Sitio Bulac, Barangay General Luna, Carranglan, Nueva Ecija. A total of 48 species of insects were observed in the four stations of the forest-grassland ecotone and were classified and identified into 10 orders and 35 families. A species in the Family Formicidae obtained the highest species importance value among all other species of insects observed in the study area with a value of 15.3%, 48.21% and 66.38% respectively. Using Shannon Diversity Index it was determined that the ecotone has a high diversity of insects with a value of 3.45 despite human interventions. some human activities in the area such as kaingin farming and fire are identified as major threats that may lead to biodiversity loss in the ecotone of Sitio Bulac, Barangay General Luna, Carranglan Nueva Ecija. other environmental threats that have small impacts to the ecosystems are pollution, mining, charcoal making and soil erosion / silt run-off.