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SEASONAL AND LONG-TERM PATTERNS IN HARMFUL ALGAL BLOOMS IN THE PHILIPPINES

Blooms due to the toxic dinoflagellate Pyrodinium bahamense have plagued the Philippines since the 1980s. The bloom reports have historically started from the central islands; however other embayments North & South of the Country have been affected more recently. Apart from Pyrodinium, other species have also begun to contribute to Harmful Algal Blooms (HABs) both toxic and fish killing ones causing health or socio-economic impacts. Initial observations point to variations in timing among Pyrodinium-affected areas hypothesized to be driven by differences in monsoonal influence, particularly rainfall that can arguably become a key trigger point in tropical settings. This study investigates the seasonality and long-term trends of HABs across different climate types and bloom types in the country. Available time series information on phytoplankton counts, toxicity and shellfish bans from various sites are analyzed relative to satellite-derived and other accessible data on sea surface temperature, rainfall and climate indices to explore how these environmental variations relate to the occurrences of HABs.

Authors

Yñiguez, A. T., Marine Science Institute, University of the Philippines Diliman, Philippines, atyniguez@msi.upd.edu.ph

Azanza, R. V., Marine Science Institute, University of the Philippines Diliman, Philippines, rvazanza@up.edu.ph

Benico, G. A., Marine Science Institute, University of the Philippines Diliman, Philippines, gboyzone2000@gmail.com

Villanoy, C. L., Marine Science Institute, University of the Philippines Diliman, Philippines, cesarv@msi.upd.edu.ph

Details

Oral presentation

Session #:021
Date: 03/02/2017
Time: 10:30
Location: 323 B

Presentation is given by student: No