Vertical Distribution of Diverse Phytoplankton Communities in the Central Pacific
Vertical Distribution of Diverse Phytoplankton Communities in the Central Pacific
复制标题
中太平洋浮游植物多样性群落的垂直分布
DOI：
10.1007/978-1-4684-3518-4_6
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发表时间：
1979
影响因子：
6.4
通讯作者：
S. El
中科院分区：
文献类型：
--
作者：
G. Fryxell;S. Taguchi;S. El
在太平洋中部的夏威夷东南部，在三个断面上采集了浮游植物样本。平均超过20，500细胞/升，包括鞭毛虫，被发现的所有深度计数，硅藻，腰鞭毛虫和颗石藻一起占（大约相等的数量）的一半。球石藻在某些深度占主导地位。随着深度的细胞数量的配置文件显示了一个地下最大值，在更大的深度减少数量。空细胞计数遵循相同的配置文件，与计数几乎是一个数量级较小，可能表明在透光带内的回收。多样性指数揭示了这些样带上浮游植物群落的复杂性，每个站点所有深度的Shannon Weaver指数（H′）在大多数情况下似乎接近渐近线。样带C（东北的其他网站）表现出更深的混合层和更大的多样性。
Southeast of Hawaii in the central Pacific, phytoplankton samples were taken on three transects. An average of over 20,500 cells/liter, including flagellates, was found for all depths counted, with diatoms, dinoflagellates, and coccolithophorids together accounting (in about equal numbers) for half that number. Coccolithophorids were dominant at some depths. The profile of cell numbers with depth showed a subsurface maximum with decreasing numbers at greater depths. The empty cell counts followed the same profile, with counts that were almost an order of magnitude smaller, probably indicating much recycling within the euphotic zone. Diversity indices revealed the complexity of the phytoplankton communities on these transects, and the Shannon Weaver index (H′) summed over all depths for each station appeared to approach an asymptote in most cases. Transect C (northeast of the other sites) showed a deeper mixed layer and greater diversity.