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      Phytoplankton Composition and Water Quality of Lake Palakpakin, San Pablo City, Laguna

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            Abstract

            The richness of the phytoplankton community is evidence of changes in the physical, chemical, and biological parameters of a lake. Nitrates and phosphates are essential for the growthof living organisms in the water. Nevertheless, excessive levels lead to eutrophication. The objective of the study focuses on the assessment of nutrients and richness of phytoplankton in LakePalakpakin, one of the Seven Crater Lakes of San Pablo, Laguna. Specifically, this study aims to (1) assess the richness of phytoplankton in the lake and (2) determine the effect of the lake’snitrate and phosphate levels on phytoplankton richness. Results show that green algae were the richest group with 21 genera (44%), followed by diatoms with 13 genera (27%) and blue-greenalgae with 9 genera (19%). Among the sampling stations, the outlet was the richest with 36 genera, followed by the center (26 genera), inlet (22 genera), and fish pen (19 genera). There was noobserved effect between phytoplankton richness and nitrate and phosphate levels among the different study sites.

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            ScienceOpen Posters
            ScienceOpen
            16 June 2022
            Affiliations
            [1 ] Department of Natural Sciences, Ateneo de Naga University, Ateneo Avenue, Naga City 4400
            [2 ] Department of Environmental Science, Ateneo de Manila University, Loyola Heights, 1108 Quezon City, Philippines
            Author notes
            Author information
            https://orcid.org/0000-0001-8588-1414
            Article
            10.14293/S2199-1006.1.SOR-.PPFMSYQ.v1
            9831aa9f-04c4-4266-a8a5-8a35161d03b5

            This work has been published open access under Creative Commons Attribution License CC BY 4.0 , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Conditions, terms of use and publishing policy can be found at www.scienceopen.com .

            History
            : 16 June 2022

            The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.
            Ecology,General environmental science

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