Microbial communities in the Hudson Strait amidst rapid environmental change.

IF 1.8 4区 生物学 Q4 BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Samantha J T Loutet, Alia Sanger, Kallie Strong, R Eric Collins, Nagissa Mahmoudi
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引用次数: 0

Abstract

Climate change is rapidly altering Arctic marine environments, leading to warmer waters, increased river discharge, and accelerated sea ice melt. The Hudson Bay Marine System experiences the fastest rate of sea ice loss in the Canadian North resulting in a prolonged open water season during the summer months. We examined microbial communities in the Hudson Strait using high throughput 16s rRNA gene sequencing during the peak of summer, in which the bay was almost completely ice-free, and air temperatures were high. We found that salinity and temperature significantly affected the taxonomic composition among microbial communities across sites. We observed a higher relative abundance of specific Polaribacter sp. Amplicon sequence variants (ASVs) at more saline sites. Shannon diversity was not significantly impacted by salinity or temperature. These results contribute to our understanding of surface water microbial community composition in the Hudson Strait and shed light on how future salinity and temperature conditions may favour certain microbial populations.

快速环境变化中的哈德逊海峡微生物群落。
气候变化正在迅速改变北极海洋环境,导致海水变暖,河流流量增加,海冰融化加速。哈德逊湾海洋系统(HBMS)经历了加拿大北部海冰融化速度最快的地区,导致夏季开放水域季节延长。我们利用高通量16s rRNA基因测序技术,在夏季的高峰期对哈德逊海峡的微生物群落进行了研究,当时海湾几乎完全不结冰,气温很高。我们发现盐度和温度显著影响了不同站点间微生物群落的分类组成。我们观察到,在盐碱度较高的地方,特异性极化杆菌asv的相对丰度较高。盐度和温度对Shannon多样性影响不显著。这些结果有助于我们了解哈德逊海峡地表水微生物群落组成,并阐明未来盐度和温度条件如何有利于某些微生物种群。
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来源期刊
CiteScore
4.80
自引率
0.00%
发文量
71
审稿时长
2.5 months
期刊介绍: Published since 1954, the Canadian Journal of Microbiology is a monthly journal that contains new research in the field of microbiology, including applied microbiology and biotechnology; microbial structure and function; fungi and other eucaryotic protists; infection and immunity; microbial ecology; physiology, metabolism and enzymology; and virology, genetics, and molecular biology. It also publishes review articles and notes on an occasional basis, contributed by recognized scientists worldwide.
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