00000namaa22000003a 4500 UP-8027295163992879678 Buklod 20250901133252.0 t r |||| u| ta 250901s2024 ph r |||| u|eng UPVT-00020032552 UPTC rda eng LG 993.5 2024 B5 B36 Bañez, Kween Erika Czharn Ella A. author. Marine macroalgal diversity and abundance assessment in Llorente, Eastern Samar, Philippines Kween Erika Czharn Ella A. Bañez; Richard B. Parilla, adviser. 2024. x, 75 leaves illustrations. text rdacontent unmediated rdamedia volume rdacarrier Undergraduate thesis (B.S. Biology) -- University of the Philippines, Tacloban. The coastal regions of Eastern Samar are endowed with rich marine biodiversity however, botanical exploration is particularly difficult due to its remote location as it is directly facing the Pacific Ocean where a number of unpredictable weather conditions regularly occur causing the disturbance of the biodiversity of coastal ecosystems. This study seeks to contribute to progressing records through a preliminary assessment of diversity and abundance of marine macroalgal species particularly in Llorente, Eastern Samar. A one-time sampling was conducted in four study sites namely, Brgy. San Miguel, Brgy. San Jose, Brgy. Naubay, and Brgy. Bacayawan from May 4, 2024 to May 5, 2024. The sampling method was carried out through the line transect-quadrat method. Biodiversity was evaluated with the Shannon-Weiner index (H'), Simpson's index (D), and Sheldon's index (E) through the PAST Software. Voucher specimens were collected and preserved for species identification. The study has recorded a total of 18 species of macroalgae belonging to 8 families and 10 genera. 8 species are from class Chlorophyta, 7 species are from class Phaeophyta, and 3 species are from class Rhodophyta. The study obtained a Shannon-Weiner index value of 1.4 and Simpson's index value of 0.56 indicating a moderate level of diversity in a near labile state community. One-Way Analysis of Variance (ANOVA) of the species diversity (p=0.012), species dominance (p=0.013), and species evenness (p=0.018) at x=0.05. The results of this study provides baseline information for future ecological assessments and contribute to broader efforts aimed at preserving marine biodiversity in Eastern Samar. Yap-Dejeto, Leni G. adviser. Thesis FI UP UPTAC UPTAC LG 993.5 2024 B5 B36 Thesis