【摘要】 通过对福建兴化湾海域表层和柱状沉积物中甲藻孢囊的分析,共鉴定出10属29种(含不定种)甲藻孢囊.其中发现有毒种类7种:微小亚历山大藻(Alexandrium minutum)、多环旋沟藻(Co-chlodinium polykrikoides)、多边舌甲藻(Lingulodinium polyedrum)、具刺膝沟藻(Gonyaulaxspinifera)、链状裸甲藻(Gymnodinium catenatum)、网状原角管藻(Protoceratium reticulatum)和锥藻斯氏藻(Scrippsiella trochoidea).表层沉积物中总甲藻孢囊丰度值在13~88粒/g之间,柱状沉积物中总甲藻孢囊的丰度在40~105粒/g以内.通过与周边其他海域甲藻孢囊属种组成及丰度值对比,表明兴化湾甲藻孢囊的丰度值较高,并且7种有毒种类的存在对该海域发生有毒有害赤潮构成潜在威胁,相关政府部门及周围居民应加以重视和防范.更多还原

【Abstract】 Twenty-night species in 10 genus of dinoflagellate cysts including 7 toxic species are identified from the surface and core sediment samples in Xinghua Bay,Fujian.They are Alexandrium minutum,Cochlodinium polykrikoides,Lingulodinium polyedrum,Gonyaulax spinifera,Gymnodinium catenatum,Protoceratium reticulatum,and Scrippsiella trochoidea.Density of dinoflagellate cysts rage from 13 cysts/g to 88 cysts/g in surface sediments and from 40 cysts/g to 105 cysts/g in core sediments.Density of the dinoflagellate cyst in Xinghua Bay could be high compared with those areas in nearby seas.The existence of 7 toxic species can be the potential source of toxic Harmful Algae Blooms(HABs) in Xinghua Bay.更多还原