TY - JOUR
T1 - Relationship between magnitude of phytoplankton blooms and rainfall in a hyper-eutrophic lagoon
T2 - A continuous monitoring approach
AU - Meng, Pei Jie
AU - Tew, Kwee Siong
AU - Hsieh, Hung Yen
AU - Chen, Chung Chi
N1 - Funding Information:
This research was funded by the Dapeng Bay Science Area Administration ( 103008 ). The work of C.-C. Chen was partly supported by the Ministry of Science and Technology (MOST), Taiwan, under grant Nos: MOST 104-2611-M-003-001 and 105-2119-M-003-007-MY2 . The authors would like to thank SimEnvi Consultant Co. Ltd for help with the field work. Data on sea-level height was provided by the Marine Meteorology Center, Center Weather Bureau, Taiwan.
Publisher Copyright:
© 2016 Elsevier Ltd
PY - 2017/11/30
Y1 - 2017/11/30
N2 - To evaluate the effect of rainfall intensity on phytoplankton blooms, a continuous monitoring system was deployed during 2015 in a hyper-eutrophic lagoon in Taiwan. Intensive rainfall occurs during the wet summer months, from May to September. Salinity in the lagoon was found to decrease with increasing intensity of rainfall. The magnitude of phytoplankton blooms also increased linearly with increasing rainfall intensity. The chlorophyll a concentration rose by an order of magnitude during the heaviest rainfall. Blooms may be fueled by nutrient enrichment caused by drainage or run-off water from surrounding areas that is channeled into the lagoon during rainfall events. During bloom periods, the rates of net primary production and ecosystem respiration were high. However, this ecosystem was autotrophic for most of the year. As extreme rainfall is predicted to increase, the results of this study imply that the frequency and magnitude of phytoplankton blooms may increase in the future.
AB - To evaluate the effect of rainfall intensity on phytoplankton blooms, a continuous monitoring system was deployed during 2015 in a hyper-eutrophic lagoon in Taiwan. Intensive rainfall occurs during the wet summer months, from May to September. Salinity in the lagoon was found to decrease with increasing intensity of rainfall. The magnitude of phytoplankton blooms also increased linearly with increasing rainfall intensity. The chlorophyll a concentration rose by an order of magnitude during the heaviest rainfall. Blooms may be fueled by nutrient enrichment caused by drainage or run-off water from surrounding areas that is channeled into the lagoon during rainfall events. During bloom periods, the rates of net primary production and ecosystem respiration were high. However, this ecosystem was autotrophic for most of the year. As extreme rainfall is predicted to increase, the results of this study imply that the frequency and magnitude of phytoplankton blooms may increase in the future.
KW - Ecosystem respiration
KW - Eutrophication
KW - Net primary production
KW - Phytoplankton blooms
KW - Rainfall
KW - Taiwan
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U2 - 10.1016/j.marpolbul.2016.12.040
DO - 10.1016/j.marpolbul.2016.12.040
M3 - Article
C2 - 28007389
AN - SCOPUS:85008352546
SN - 0025-326X
VL - 124
SP - 897
EP - 902
JO - Marine Pollution Bulletin
JF - Marine Pollution Bulletin
IS - 2
ER -