Analysis of hydrological and meteorological factors causing Karenia mikimotoi bloom in 2012 along Fujian coast

doi:10.3969/j.issn.1001-909X.2016.04.004

Abstract

Abstract: The relationship between the inter-annual variation of hydrological and meteorological factors and the Karenia mikimotoi bloom was analyzed using air temperature, SST(sea surface temperature), wind field and rainfall data from ERA-Interim Dataset, HYCOM+NCODA Global Reanalysis and the stations along Fujian coast in the spring (March to May) of 2005, 2011 and 2012. The results show that decrease of SST in March,increase of SST in May and the higher heating rate may be the main causative factor of Karenia mikimotoi bloom in Fujian coast in 2012. The relatively stronger northerly wind in May formed a stable dynamic environment by gathering the algae onshore, which promoted the Karenia mikimotoi bloom. More rainfall from January to April might provide a well biological and chemical environment for the growth of Karenia mikimotoi by offering a wealth of nutrients and microelements.

Key words: Fujian coast, Karenia mikimotoi, red tide, hydrology, meteorology

CLC Number:

DENG Hua, GUAN Wei-bing, CAO Zhen-yi, BAO Min, CHEN Qi. Analysis of hydrological and meteorological factors causing Karenia mikimotoi bloom in 2012 along Fujian coast[J]. Journal of Marine Sciences, 2016, 34(4): 28-38.

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