Large-scale distribution of coccolithophores and Parmales in the surface waters of the Atlantic Ocean
文献类型： 外文期刊
作者： Luan, Qingshan 1 ; Sun, Jianqiang 1 ; Wang, Jun 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Div Fishery Resources & Ecosyst, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Funct Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
关键词： Abundance; Atlantic; coccolithophores; multivariate analysis; oceanic front; Parmales
期刊名称：JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM （ 影响因子：1.394； 五年影响因子：1.577 ）
ISSN： 0025-3154
年卷期： 2018 年 98 卷 3 期
页码：
收录情况： SCI
摘要： Coccolithophores and Parmales are important functional groups of calcified and siliceous marine nanophytoplankton. Large-scale biogeographic distributions of the two groups were investigated based on 71 samples that were collected in the Atlantic Ocean. Using a scanning electron microscope, a total of 48 taxa of coccolithophores and eight taxa of Parmales were recorded, with Emiliania huxleyi, Tetraparma pelagica and Triparma strigata as the predominant forms. The highest abundances of coccolithophores (376 x 10(3) cells l(-1)) and Parmales (624 x 10(3) cells l(-1)) were observed in waters north-east of the Falkland Islands and the South Georgia Island, in close association with the Subantarctic Front and Polar Front, respectively. Three major biogeographic assemblages, i.e. the Falkland Shelf Assemblage, the Southern Ocean Assemblage and the Atlantic Ocean Assemblage, were revealed in cluster analysis. Additionally, canonical correspondence analysis indicated that temperature significantly affects the latitudinal patterns of the two algal groups. High abundances of Parmales were closely coupled with those of E. huxleyi in waters of the Southern Ocean with low temperature (< 10 degrees C). However, the number of coccolithophore species, along with the Shannon-Weaver diversity, significantly increased with elevated temperature, suggesting more diverse assemblages in tropical waters.
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