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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50221

Title: Contrasting the relative importance of species sorting and dispersal limitation in shaping marine bacterial versus protist communities.
Authors: Wenxue Wu
Hsiao-Pei Lu
Akash Sastri
Yi-Chun Yeh
Gwo-Ching Gong
Wen-Chen Chou
Chih-Hao Hsieh
Contributors: 國立臺灣海洋大學:海洋環境與生態研究所
Date: 2017-11
Issue Date: 2018-09-25T07:51:25Z
Publisher: The ISME Journal
Abstract: Abstract: A central challenge in microbial ecology is to understand the underlying mechanisms driving community assembly, particularly in the continuum of species sorting and dispersal limitation. However, little is known about the relative importance of species sorting and dispersal limitation in shaping marine microbial communities; especially, how they are related to organism types/traits and water depth. Here, we used variation partitioning and null model analysis to compare mechanisms driving bacterial and protist metacommunity dynamics at the basin scale in the East China Sea, based on MiSeq paired-end sequencing of 16S ribosomal DNA (rDNA) and 18S rDNA, respectively, in surface, deep chlorophyll maximum and bottom layers. Our analyses indicated that protist communities were governed more strongly by species sorting relative to dispersal limitation than were bacterial communities; this pattern was consistent across the three-depth layers, albeit to different degrees. Furthermore, we detected that bacteria exhibited wider habitat niche breadths than protists, whereas, passive dispersal abilities were not appreciably different between them. Our findings support the 'size-plasticity' hypothesis: smaller organisms (bacteria) are less environment filtered than larger organisms (protists), as smaller organisms are more likely to be plastic in metabolic abilities and have greater environmental tolerance.
Relation: 12(2) pp.485-494
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50221
Appears in Collections:[海洋環境與生態研究所] 期刊論文

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