Newly recorded harmful algal blooms in Zhejiang coastal waters,China in the last decade

【作者】 陆斗定； 王红霞； 戴鑫烽； 何飘霞； 夏平；

【机构】 国家海洋局第二海洋研究所,国家海洋局海洋生态系统与生物地球化学重点实验室；

【摘要】 <正>On the basis of historical records and investigated data in recent years,the frequency of harmful algal blooms(HABs) has been increasing in the Zhejiang coastal waters.The scale of HABs in the last decade becomes much more extensive and toxic species have been recorded more frequently than ever before.Before the decade of 70s of last century,the dominant species in phytoplankton community were mainly dinoflagellates and diatoms such as species in genera Noctiuca,Skeletonema, Chaetoceros,Coscinodiscus,Rhizosolenia,Thalassiosira etc.Since 80’s of last century,more and more harmful and toxic species such as Prorocentrumdonghaiense, Kareniamikimotoi.and species of the genus Alexandrium,become dominant in phytoplankton community and formed massive blooms although diatom still keep common in the coastal waters of Zhejiang province,China.More recently,Karlodiniumveneficum,Cochlodiniumpolykrikoides and some species in Raphydophytes such as Heterosigmaakshiwo,Chattonella marina, Chattonenaovataetc have started to form blooms from time to time.PSP dinocyst concentration increased during the past 5 decades.The possible inducing factors responsible for the phenomenon are presumably analyzed.更多还原

【Abstract】 On the basis of historical records and investigated data in recent years,the frequency of harmful algal blooms(HABs) has been increasing in the Zhejiang coastal waters.The scale of HABs in the last decade becomes much more extensive and toxic species have been recorded more frequently than ever before.Before the decade of 70s of last century,the dominant species in phytoplankton community were mainly dinoflagellates and diatoms such as species in genera Noctiuca,Skeletonema, Chaetoceros,Coscinodiscus,Rhizosolenia,Thalassiosira etc.Since 80’s of last century,more and more harmful and toxic species such as Prorocentrumdonghaiense, Kareniamikimotoi.and species of the genus Alexandrium,become dominant in phytoplankton community and formed massive blooms although diatom still keep common in the coastal waters of Zhejiang province,China.More recently,Karlodiniumveneficum,Cochlodiniumpolykrikoides and some species in Raphydophytes such as Heterosigmaakshiwo,Chattonella marina, Chattonenaovataetc have started to form blooms from time to time.PSP dinocyst concentration increased during the past 5 decades.The possible inducing factors responsible for the phenomenon are presumably analyzed.更多还原