{"title":"Geographical variation of bacterial and ciliophoran communities in tidal flats in a continental archipelago.","authors":"Yasutake Kawamoto, Jotaro Urabe","doi":"10.2323/jgam.2023.07.002","DOIUrl":null,"url":null,"abstract":"<p><p>In tidal flats, which are located at the transition zone between terrestrial and marine ecosystems, environmental factors such as temperature, sediment particle size, and tidal range exhibit geographic variation. Accordingly, the composition and structure of the microbial communities in the tidal flats are likely to vary in geographically different habitats. To clarify these differences with environmental factors causing them, we analyzed microbial communities consisting of bacteria and ciliates in sediments collected from nine tidal flats in geographical diverse region from Hokkaido to Kagoshima, Japan. The results confirmed that the community structures of bacteria and ciliophora in tidal flat sediments differed at the geographical scale of the Japanese archipelago. However, the variation could not be explained by the physical distance between the tidal flats nor by the differences in the trophic conditions among the tidal flats. Instead, the OTU richness of both the bacterial and ciliophoran communities was significantly related to the tidal range. The results also showed that bacteria and ciliophora tended to form similar communities among the tidal flats with similar median particle sizes. Furthermore, ciliophoran communities were similar among the tidal flats with similar bacterial communities. The results suggest that bacteria and ciliophora interact each other through trophic relationships or physical and chemical processes in the sediment habitats.</p>","PeriodicalId":15842,"journal":{"name":"Journal of General and Applied Microbiology","volume":null,"pages":null},"PeriodicalIF":0.8000,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of General and Applied Microbiology","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.2323/jgam.2023.07.002","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2023/7/19 0:00:00","PubModel":"Epub","JCR":"Q4","JCRName":"BIOTECHNOLOGY & APPLIED MICROBIOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
In tidal flats, which are located at the transition zone between terrestrial and marine ecosystems, environmental factors such as temperature, sediment particle size, and tidal range exhibit geographic variation. Accordingly, the composition and structure of the microbial communities in the tidal flats are likely to vary in geographically different habitats. To clarify these differences with environmental factors causing them, we analyzed microbial communities consisting of bacteria and ciliates in sediments collected from nine tidal flats in geographical diverse region from Hokkaido to Kagoshima, Japan. The results confirmed that the community structures of bacteria and ciliophora in tidal flat sediments differed at the geographical scale of the Japanese archipelago. However, the variation could not be explained by the physical distance between the tidal flats nor by the differences in the trophic conditions among the tidal flats. Instead, the OTU richness of both the bacterial and ciliophoran communities was significantly related to the tidal range. The results also showed that bacteria and ciliophora tended to form similar communities among the tidal flats with similar median particle sizes. Furthermore, ciliophoran communities were similar among the tidal flats with similar bacterial communities. The results suggest that bacteria and ciliophora interact each other through trophic relationships or physical and chemical processes in the sediment habitats.
滩涂位于陆地和海洋生态系统的过渡地带,温度、沉积物颗粒大小和潮汐范围等环境因素呈现出地域差异。因此,滩涂微生物群落的组成和结构在不同的地理栖息地也可能有所不同。为了澄清造成这些差异的环境因素,我们分析了从日本北海道到鹿儿岛不同地理区域的 9 个滩涂采集的沉积物中由细菌和纤毛虫组成的微生物群落。结果证实,在日本列岛的地理范围内,潮滩沉积物中细菌和纤毛虫的群落结构存在差异。然而,潮滩之间的物理距离和潮滩之间的营养条件差异无法解释这种差异。相反,细菌和纤毛虫群落的 OTU 丰富度与潮汐范围有显著关系。研究结果还表明,在中位粒径相似的潮滩上,细菌和纤毛虫群落的形成趋于相似。此外,在细菌群落相似的潮滩中,纤毛虫群落也相似。结果表明,细菌和纤毛虫通过营养关系或沉积物生境中的物理和化学过程相互影响。
期刊介绍:
JGAM is going to publish scientific reports containing novel and significant microbiological findings, which are mainly devoted to the following categories: Antibiotics and Secondary Metabolites; Biotechnology and Metabolic Engineering; Developmental Microbiology; Environmental Microbiology and Bioremediation; Enzymology; Eukaryotic Microbiology; Evolution and Phylogenetics; Genome Integrity and Plasticity; Microalgae and Photosynthesis; Microbiology for Food; Molecular Genetics; Physiology and Cell Surface; Synthetic and Systems Microbiology.