北黄海表层沉积物中甲藻孢囊的分布特征  

Distribution of dinoflagellate cysts in the surface sediments from the northern Yellow Sea,China

作　　者：石雅君[1,2] 刘东艳[1] 邵红兵[1] 邸宝平[1] 董志军[1] 王玉珏[1] 

机构地区：[1]中国科学院烟台海岸带研究所中国科学院和山东省海岸带环境过程重点实验室,山东烟台264003 [2]中国科学院研究生院,北京100049

出　　处：《海洋通报》2011年第3期320-327,共8页Marine Science Bulletin

基　　金：国家自然科学基金(40976097);中科院知识创新工程(KZCX2-YW-Q07-04);中国科学院研究生科技创新项目

摘　　要：2009年和2010年采集北黄海15个站位的表层沉积物样品进行甲藻孢囊分析,共鉴定出甲藻孢囊28种(隶属13个属)和2种未定种,优势种为膝沟藻(Gonyaulax spp.)、塔马/链状亚历山大藻(Alexandrium catenella/tamarense)和微小/相似亚历山大藻(Alexandrium minutum/affine)。北黄海海域甲藻孢囊总丰度为545-3567 cysts/g DW,平均丰度为1269 cysts/g DW。甲藻孢囊丰度总体分布趋势为中部海域高,其它海域低。北黄海甲藻孢囊的分布规律与底质类型和水动力条件密切相关。两种产YTX(Yessotoxin)毒素甲藻[具刺膝沟藻(Gonyaulax spinifera)和多边舌甲藻(Lingulodinium polyedrum)]的孢囊和3种产麻痹性贝类毒素(PSP)甲藻[塔马/链状亚历山大藻、微小/相似亚历山大藻和链状裸甲藻(Gymnodinium catenatum)]的孢囊在北黄海海域有分布,并且亚历山大藻(Alexandrium spp.)的活孢囊在沉积物表层聚集且分布广泛,有爆发赤潮的可能。Dinoflagellate cysts in the surface sediment collected in 2009 and 2010 were analyzed at 15 stations in the northern Yellow Sea.Twenty-eight dinoflagellate cyst taxa of thirty genera and two uncertain taxa were identified from samples.The dominant taxa were Gonyaulax spp.（Spiniferites spp.）,Alexandrium catenella / tamarense and Alexandrium minutum / affine.The total cyst abundance ranged between 545 cysts/g DW and 3567 cysts/g DW,and the average was 1269 cysts/g DW.The total cyst abundance showed a decrease from the central sea area to the surrounding sea area.The distribution of dinoflagellate cysts in the northern Yellow Sea was correlated to the sediment grain size and hydrodynamics.The cysts of two toxic dinoflagellate species（Gonyaulax spinifera and Lingulodinium polyedrum）,which produce Yessotoxin,and the cysts of three toxic dinoflagellate species（Alexandrium catenella / tamarense,Alexandrium minutum / affine and Gymnodinium catenatum）,which produce paralytic shellfish poisoning（PSP）,were distributed in the northern Yellow Sea.The living cysts of Alexandrium spp.were denser and more widely distributed in the northern Yellow Sea.It indicates the potential possibility of red tide occurrence in the northern Yellow Sea.

关 键 词：甲藻孢囊 北黄海 表层沉积物 赤潮 

分 类 号：Q914.82[天文地球—古生物学与地层学]