Summer Bloom of Coccolithophorids in the Northeastern Black Sea

A.S.Mikaeiyan; L.A.Pautova; S.I.Pogosyan; I.N.Sukhanova

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Summer Bloom of Coccolithophorids in the Northeastern Black Sea

机译：东北黑海的球墨石藻的夏季开花

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On the basis of the observations performed in June-July 2004,the main parameters of the coccoli-thophorid blooming are described.Emiliania huxleyi was the dominant species.Its maximum abundance amounted to 1.5-6.0 x 10~6 cells l~(-1).High concentrations occurred throughout the entire area studied (up to 70 miles from the shore).The main share of the population was confined to a thin upper mixed layer.The population of this alga is characterized by two types of cells:calcified (with coccoliths) and naked (lacking cocco-liths).Cells of the latter type were mainly observed under the seasonal pycnocline layer,while those of the former type prevailed in the surface layer.The coccolithophorid biomass in the surface layer averaged 180 mg/m~3 throughout the study area.Experiments aimed at determining the dark adaptation of phytoplankton revealed no inhibition of photosynthesis in the upper water layers under coccolithophorid domination.Experimental data indicate a dependence of the Emiliania huxleyi population development on the phosphorus concentrations.

机译：根据2004年6月至7月的观测资料，描述了球茎藻类-珠光体开花的主要参数，以mil虫为主导种，其最大丰度为1.5-6.0 x 10〜6细胞l〜（-1）。在整个研究区域（距海岸最多70英里）都发生了高浓度的藻类。该藻类的主要种群被限制在一个较薄的上层混合层中。该藻类的特征在于两种细胞：钙化的（后一种类型的细胞主要出现在季节性比考克林层以下，而前一种类型的细胞主要分布在表层。表层中的球形鞘磷脂生物量平均为180 mg / m在整个研究区域中约有3个实验，旨在确定浮游植物暗适应的实验表明，在球墨石藻体控制下，上层水层没有光合作用的抑制作用。 uxleyi人口发展对磷浓度的影响。

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《Oceanology》 |2005年第6期|共12页
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A.S.Mikaeiyan; L.A.Pautova; S.I.Pogosyan; I.N.Sukhanova;
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3. The June Maximum of Normalized Radiance and Its Relation to the Hydrological Conditions and Coccolithophorid Bloom in the Black Sea [J] . G.S.Karabashev, S.V.Sheberstov, V.G.Yakubenko Oceanology . 2006,第3期

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Summer Bloom of Coccolithophorids in the Northeastern Black Sea

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