Antropogenic Activities, Water Quality, and Plankton Diversity in Barangay San Diego, Lian, Batangas / Jocelyn Z. Aquino, Kathleen B. Suating

Thesis (Undergraduate)

College of Science -- Bachelor of Science in Environmental Science, Technological University of the Philippines,
2019.

Includes bibliographical references and index.

"The study was conducted to determine the anthropogenic activities, asses the water quality and the plankton diversity in the coastal area of Barangay San Diego, Lian, Batangas for five consecutive months starting June 2018. Three sites were studied namely: Site 1 (rocky and abundant in corals), Site 2 (entrance of the beach), and Site 3 (outlet of the river). Anthropogenic activities identified using survey coupled with interview to 300 key informants in the vicinity revealed that fishing and bathing are the leading activities in all months. Physio-chemical qualities of water including temperature, DO, BOD, salinity, and phosphates are within the allowable limit for Class SC water, but not nitrates and pH. Kruskal-Wallis and Freidman test revealed that fluctuation of water quality level among three sites and among three sites and among five sampling period are significant as a result of different human-induced activities, environmental changes, and changes in weather condition. Biodiversity indices revealed that the sites have high plankton diversity. A total of 86 phytoplankton belonging to 10 division, 33 order, 38 families, and 47 genera and 21 zooplankton belonging to 4 divisions, 5 class, 9 order, sixteen 16 and 18 genera were identified. Thalassiothrix delicatula cupp, Trichodesmium theibautic, Ceratium sumatranum are the most abundant phytoplankton species. On the other hand, Eurytemora pacifica, Evadne spinifera, Microsetella norvegica are the most abundant zooplankton species. Phytoplankton is influenced by conductivity, TDS, BOD, and salinity while zooplankton in impacted by BOD and salinity." -- Author's Abstract