Sediment bacterial communities are more complex in coastal shallow straits than in oceanic deep straits
Sediment bacterial communities are more complex in coastal shallow straits than in oceanic deep straits
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沿海浅水海峡沉积物细菌群落比大洋深部海峡更复杂
DOI：
10.1007/s00343-018-7133-6
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发表时间：
2018-08
影响因子：
1.6
通讯作者：
Xiaoke Hu
中科院分区：
文献类型：
--
作者：
Hongmei Liu;Bin Wang;Xiaoke Hu
海峡是研究复杂水文环境中细菌群落聚集的理想模型。然而，很少有研究关注其中的细菌群落。本文对渤海浅海海峡(BS)和大洋深水框架海峡(FS)的细菌群落进行了比较研究。BS组Shannon指数和Chao1指数均高于FS组。与OM1_CLADE和JTB_255_Ocean_BANTHERIC_GROUP相反，BS的DeltaProtebacteria、Bacilli和Halieaceae的相对丰度高于FS，反映了沿海和海洋细菌群落的典型特征。基于Bray-Curtis指数的聚类分析表明，在FS和BS中，样品按深度层聚在一起，表明细菌群落结构随着海峡水深的增加而不同。此外，丰度群落和稀有群落样本之间的聚类关系与整个群落的相似。不同样本间的相似性由高到低依次为稀有群落、完整群落和丰富群落。网络分析表明，BS网络明显比FS网络复杂。丝状细菌Desulfulbaceae在BS中的值较高，而在FS中的值不高，表明Desulfulbaceae在BS中起着关键作用。我们的研究为理解沿海浅水和大洋深水海峡的微生物生态提供了不同的和共同的证据。
Straits are ideal models to investigate the bacterial community assembly in complex hydrological environments. However, few studies have focused on bacterial communities in them. Here, comparable bacterial communities in costal shallow Bohai Strait (BS) and oceanic deep Fram Strait (FS) were studied. The Shannon and Chao1 indices were both higher in BS than in FS. The relative abundances of the classes Deltaproteobacteria and Bacilli and the family Halieaceae were higher in BS than in FS, in contrast to the families OM1_clade and JTB255_marine_benthic_group, revealing typical characteristics of bacterial communities in coastal and oceanic regions. Cluster analysis based on the Bray-Curtis index showed that samples were clustered by depth layer in FS and BS, indicating that structures of bacterial communities would differ with increasing water depth in straits. Additionally, the cluster relationships among samples in abundant and rare communities were both similar to those in entire communities. However, the dissimilarities among samples showed a descending order as rare communities, entire communities and abundant communities. Network analysis indicated that the BS network was obviously more complex than the FS network. Filamentous bacteria Desulfobulbaceae exhibited high degree values in BS but not in FS, indicating key roles of Desulfobulbaceae in the BS. Our study provides different and common evidences for understanding microbial ecology in coastal shallow and oceanic deep straits
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影响因子：
4.8
作者：
Meng Lin;Yuhua Liu;Weiwei Chen;Hui Wang;Xiaoke Hu
通讯作者：
Xiaoke Hu
影响因子：
2.6
作者：
Flynn, Jullien M.;Brown, Emily A.;Chain, Frederic J. J.;MacIsaac, Hugh J.;Cristescu, Melania E.
通讯作者：
Cristescu, Melania E.
影响因子：
3.7
作者：
Jacob M;Soltwedel T;Boetius A;Ramette A
通讯作者：
Ramette A
影响因子：
1.9
作者：
H. Pan;Jiang-chun Hu
通讯作者：
H. Pan;Jiang-chun Hu
影响因子：
5.2
作者：
Buttigieg PL;Ramette A
通讯作者：
Ramette A