高晨, 王晓峰, 石雅君, 等, xxxx. 黄河口及邻近海域表层沉积物甲藻孢囊多样性研究[J]. 海洋科学进展, x(x): xx-xx. doi: 10.12362/j.issn.1671-6647.20230828001.
引用本文: 高晨, 王晓峰, 石雅君, 等, xxxx. 黄河口及邻近海域表层沉积物甲藻孢囊多样性研究[J]. 海洋科学进展, x(x): xx-xx. doi: 10.12362/j.issn.1671-6647.20230828001.
GAO C, WANG X F, SHI Y J, et al, xxxx. Diversity of dinoflagellate cysts in surface sediments in the yellow river estuary and its adjacent sea area[J]. Advances in Marine Science, x(x): xx-xx. DOI: 10.12362/j.issn.1671-6647.20230828001
Citation: GAO C, WANG X F, SHI Y J, et al, xxxx. Diversity of dinoflagellate cysts in surface sediments in the yellow river estuary and its adjacent sea area[J]. Advances in Marine Science, x(x): xx-xx. DOI: 10.12362/j.issn.1671-6647.20230828001

黄河口及邻近海域表层沉积物甲藻孢囊多样性研究

Diversity of Dinoflagellate Cysts in Surface Sediments in the Yellow River Estuary and Its Adjacent Sea Area

  • 摘要: 2022年11月采集了黄河口及邻近海域16个站位的表层沉积物样品,鉴定出35种甲藻孢囊(隶属13个属)和3种未定种,其中优势种为甲藻孢囊A型、原多甲藻(Brigantedinium sp.1)、膝沟藻(Spiniferites spp.)、原多甲藻(Brigantedinium spp.)、网状原角管藻(Operculodinium centrocarpum)、甲藻孢囊C型和甲藻孢囊B型。其中,孢囊物种丰富度指数(dMa)为3.66~5.91,多样性指数(H’)为2.72~3.68,均匀度指数(J)为0.53~0.73。孢囊总丰度为35~921 cysts/g(干重,下同),平均丰度为346 cysts/g。研究表明,从黄河口和莱州湾至渤海中部海域甲藻孢囊多样性和丰度逐渐升高,高比率的异样型甲藻孢囊显示了该海域的富营养化程度较高;2种产虾夷扇贝毒素(Yessotoxin, YTX)甲藻(具刺膝沟藻Gonyaulax spinifera和多边舌甲藻Lingulodinium polyedrum)孢囊和3种产麻痹性贝类毒素(PSP)甲藻(链状亚历山大藻Alexandrium catenella、微小亚历山大藻Alexandrium minutum和链状裸甲藻Gymnodinium catenatum)孢囊调查海域分布广泛但丰度比较低。

     

    Abstract: Dinoflagellate cysts in the surface sediment were analyzed at 16 stations in the Yellow River Estuary collected in 2022. Thirty-five dinoflagellate cyst taxa of thirteen genera and three uncertain taxa were identified from samples. The dominant taxa were Cyst A, Brigantedinium sp.1, Spiniferites spp., Brigantedinium spp., Operculodinium centrocarpum, Cyst C and Cyst B. Cyst richness index (dMa) ranged 3.66-5.91; species diversity index (H’) ranged 2.72-3.68; evenness index (J) ranged 0.53-0.73. The total cyst abundance ranged between 35 cysts/g and 921 cysts/g (in dry weight), and the average was 346 cysts/g (in dry weight). The total abundance and diversity of dinoflagellate cysts showed a increase from the Yellow River Estuary and Laizhou Bay to Bohai Sea. The high ratio of heterotypic dinoflagellate cysts indicated a high degree of eutrophication in the sea area. The cysts of two toxic dinoflagellate species (Gonyaulax spinifera and Lingulodinium polyedrum), which produce Yessotoxin (YTX), and the cysts of three toxic dinoflagellate species (Alexandrium catenella, Alexandrium minutum and Gymnodinium catenatum ), which produce paralytic shellfish poisoning (PSP), were distributed widely in the Yellow River Estuary, but with relatively low abundance.

     

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