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Master's Theses

Permanent URI for this collectionhttps://hdl.handle.net/20.500.14578/4

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    Species composition, diversity, abundance, and microhabitat preferences of anuran species in the Miral river, Bansalan, Davao del Sur
    Ubat, Drahcir E. (Davao del Sur State College, 2025-05)
    A comprehensive anuran survey was conducted across three sites along the Miral River in Bansalan, Davao del Sur—Barangay Managa (upstream), Barangay Tubod (midstream), and Barangay Poblacion Uno (downstream). Using 270 man-hours of cruising and mark-release-technique, the survey documented anuran species, assessed habitat associations, and generated baseline data on Mindanao's amphibian diversity. A total of 104 anuran individuals were recorded, representing six species and four families, with 67% being non-endemics and 33% endemic to the Mindanao faunal region. Limnonectes magnus was noted as nearly threatened. Species diversity was highest upstream (H' = 1.52, S = 6), moderate midstream (H' = 1.05, S = 4), and lowest downstream (H = 0.43, S = 2), but were not statistically significant (p = 0.2193). While species composition varied between sites (p = 0.1875). Most anurans utilized both aquatic and terrestrial microhabitats, indicating microhabitat overlap. This study revealed that Rhinella marina was strongly linked to warmer water, higher pH, and elevated air temperature—conditions typical of downstream habitats. Conversely, upstream habitats, with dense canopy, abundant moss, leaf litter, and minimal disturbance, supported species like Polypedates leucomystax and Kaloula pulchra. Obviously, principal component analysis revealed that elevation was the most influential environmental factor with strong association habitat variables affecting anuran preferences. Endemic species were associated with intact forest areas, though signs of forest clearing for agriculture indicated environmental stress. The dominance of invasive species and the low presence of the near-threatened Limnonectes magnus underscore the urgent need for conservation efforts to protect native amphibians and restore natural habitats in the Miral River ecosystem.
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    Assesment on solid waste management practices among elementary schools.
    Balandra, Edisa P. (Davao del Sur State College, 2025-06)
    The study was conducted to determine the Solid Waste Management Practices and Implementation program among the elementary school community in the South District, Sta. Cruz, Davao del Sur. A randomized sampling of respondents mainly elementary pupils, teachers, and school administrators, were surveyed. The results indicated that most of the respondents across all groups were female. 64.80% of the pupils were 11 years old, while the teachers were primarily in their late twenties to early thirties with 19%. In contrast, administrators mostly belonged to 50's age brackets with 53.8%. The analysis revealed that the level of awareness of Solid Waste Management in elementary schools’ community has an overall mean of 4.13 which suggests that the respondents are aware of the problem. While the level of implementation of solid waste management was oftentimes manifested with over-all mean of 4.09. It was also found out that there is a significant relationship between and implementation in solid waste management with Pearson r- value of 0.269 indicates a low positive relationship. This suggests that as awareness increases, the level of implementation also tends to increase, but the relationship is not perfectly strong. Therefore, it is important to sustain and enhance awareness programs for solid waste management in the school community. Improved awareness programs can increase levels of environmental responsibility among pupils, teachers, and administrators.