Spring distribution of diatom assemblages in the East China Sea
Spring distribution of diatom assemblages in the East China Sea
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DOI：
10.3354/meps186075
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发表时间：
1999-09
影响因子：
2.5
通讯作者：
Kuo-Ping Chiang;Yingbin Chen;G. Gong
中科院分区：
文献类型：
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作者：
Kuo-Ping Chiang;Yingbin Chen;G. Gong
研究了东海冬季硅藻组合与水型的空间分布关系。利用主成分分析法对研究区的两种水体类型和两种硅藻组合进行了识别。中国大陆沿海沿着水体类型具有低温低盐、高硝酸盐的特点。在研究区的其余部分的货架混合水类型有较高的温度和盐度和较低的硝酸盐水平。硅藻群落的空间分布与水体类型不一致。黑潮组合有一个大的现存量，分布沿着表面的陆棚休息。这种组合可能是黑潮表层水与陆架区富营养水接触的结果，引发了某些硅藻物种的增殖。在整个研究区，在沿海水域和陆架混合水类型的背景组合与低常备库存水平持续。我们的研究结果支持以前的研究：背景组合是由于恶劣的生长条件，如在冬季的水对流，有没有显着的季节变化的物种组成。
We examined the spatial distributional relationships between diatom assemblages and water types during the winter in the East China Sea. Principal component analysis was used to identify two water types and two diatom assemblages in the study area. Coastal water types along the mainland China coastline had low temperature and salinity levels, but high nitrate levels. The shelf-mixing water type in the rest of the study area had higher temperatures and salinities and lower levels of nitrate. Diatom assemblage distribution was not spatially consistent with water type. The Kuroshio assemblage had a large standing stock, distributed along the surface of the shelf break. This assemblage is likely the result of Kuroshio surface water coming into contact with nutrient-rich water in the shelf area, triggering proliferation of certain diatom species. A background assemblage with low standing stock level persisted over the entire study area in both coastal water and the shelf-mixing water types. Our results support previous research: the background assemblage is due to poor growth conditions such as the convection of water during winter; there were no significant seasonal variations in the species composition.