As one of the important microzooplankton in marine pelagic habitats, tintinnids are classified as neritic genera, oceanic genera and cosmopolitan genera. Until now, we know little about the interaction between neritic and oceanic genera in continental shelves. Low species richness area was found in the mixing area between neritic and oceanic genera in the East China Sea. In this study, we investigated the spatial distribution of tintinnid community throughout the entire Bohai Sea in May (spring) of 2014 to find out: (1) whether the tintinnid assembalges differed in the three major bays bordering this shallow inland sea; (2) whether there was low species richness area in the Bohai Sea. Three genera and 11 species attributed to neritic and cosmopolitan taxa were reported from this region. Tintinnid abundance averaged (81±216) ind./L (0–1 234 ind./L). Tintinnid community differed within the three major bays, with each characterized by different tintinnid taxa. Referring to the average abundance of three bays, tintinnids were most abundant in the Laizhou Bay ((328±445) ind./L), and least abundant in the Liaodong Bay ((34±57) ind./L). A low species richness area occurred in the central Bohai Sea (20–40 m isobaths), in some stations of which no tintinnid was recorded. Our study demonstrates that tintinnid community varied greatly over small spatial scales, and low species richness area was found in the mixing area between neritic and oceanic genera within this inland sea.

中文翻译：

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春季，整个渤海的丁丁人社区

作为海洋中上层生境中重要的微浮游动物之一，丁丁鱼被分为有缘属，海洋属和大都会属。到现在为止，我们对大陆架上的陆地和海洋属之间的相互作用还知之甚少。东海地区本性和海洋属混合区发现物种丰富度低的区域。在这项研究中，我们调查了2014年5月（春季）整个渤海丁丁腈群落的空间分布，以发现：（1）在与该浅水内陆接壤的三个主要海湾中丁丁腈复合物是否有所不同；（2）渤海物种丰富度是否低。据报道，该地区有3属11种，属于轻度和大都会类群。Tintinnid丰度平均（81±216）英寸/升（0-1234英寸/升）。在三个主要海湾中，丁丁鸟群落各不相同，每个丁丁鸟群落的特征都不同。参照三个海湾的平均丰度，莱州湾的丁丁鸟数量最多（（328±445）ind / L），而辽东湾的丁丁数量最少（（34±57）ind / L）。渤海中部（等深线20-40 m）出现了一个物种丰富度低的地区，在其中一些站没有记录到丁丁腈。我们的研究表明，丁丁虫群落在较小的空间尺度上变化很大，并且在该内陆海域本底和大洋属之间的混合区发现物种丰富度低的区域。最少的是辽东湾（（34±57）ind./L）。渤海中部（等深线20-40 m）出现了一个物种丰富度低的地区，在其中一些站没有记录到丁丁腈。我们的研究表明，丁丁虫群落在较小的空间尺度上变化很大，并且在该内陆海域本底和大洋属之间的混合区发现物种丰富度低的区域。最少的是辽东湾（（34±57）ind./L）。渤海中部（等深线20-40 m）出现了一个物种丰富度低的地区，在其中一些站没有记录到丁丁腈。我们的研究表明，丁香鸟的群落在较小的空间尺度上变化很大，在该内陆海域的本性和海洋属之间的混合区域发现了物种丰富度低的区域。