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| DOI | 10.1038/s42003-024-05946-8 |
| Biogeographic gradients of picoplankton diversity indicate increasing dominance of prokaryotes in warmer Arctic fjords | |
| 发表日期 | 2024 |
| EISSN | 2399-3642 |
| 起始页码 | 7 |
| 结束页码 | 1 |
| 卷号 | 7期号:1 |
| 英文摘要 | Climate change is opening the Arctic Ocean to increasing human impact and ecosystem changes. Arctic fjords, the region's most productive ecosystems, are sustained by a diverse microbial community at the base of the food web. Here we show that Arctic fjords become more prokaryotic in the picoplankton (0.2-3 mu m) with increasing water temperatures. Across 21 fjords, we found that Arctic fjords had proportionally more trophically diverse (autotrophic, mixotrophic, and heterotrophic) picoeukaryotes, while subarctic and temperate fjords had relatively more diverse prokaryotic trophic groups. Modeled oceanographic connectivity between fjords suggested that transport alone would create a smooth gradient in beta diversity largely following the North Atlantic Current and East Greenland Current. Deviations from this suggested that picoeukaryotes had some strong regional patterns in beta diversity that reduced the effect of oceanographic connectivity, while prokaryotes were mainly stopped in their dispersal if strong temperature differences between sites were present. Fjords located in high Arctic regions also generally had very low prokaryotic alpha diversity. Ultimately, warming of Arctic fjords could induce a fundamental shift from more trophic diverse eukaryotic- to prokaryotic-dominated communities, with profound implications for Arctic ecosystem dynamics including their productivity patterns. Microbial connectivity analysis of Arctic, subarctic, and temperate fjords revealed regionally distinct communities. Across regions, prokaryotes were more connected than picoeukaryotes, but their dispersal was limited by temperature barriers. |
| 语种 | 英语 |
| WOS研究方向 | Life Sciences & Biomedicine - Other Topics ; Science & Technology - Other Topics |
| WOS类目 | Biology ; Multidisciplinary Sciences |
| WOS记录号 | WOS:001178058500001 |
| 来源期刊 | COMMUNICATIONS BIOLOGY
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/295437 |
| 作者单位 | Helmholtz Association; Alfred Wegener Institute, Helmholtz Centre for Polar & Marine Research; Aix-Marseille Universite; Centre National de la Recherche Scientifique (CNRS); Institut de Recherche pour le Developpement (IRD); Aix-Marseille Universite; Norwegian Polar Institute; UiT The Arctic University of Tromso; Leibniz Institut fur Gewasserokologie und Binnenfischerei (IGB); Helmholtz Association; GEOMAR Helmholtz Center for Ocean Research Kiel; Max Planck Society; Dalhousie University |
| 推荐引用方式 GB/T 7714 | . Biogeographic gradients of picoplankton diversity indicate increasing dominance of prokaryotes in warmer Arctic fjords[J],2024,7(1). |
| APA | (2024).Biogeographic gradients of picoplankton diversity indicate increasing dominance of prokaryotes in warmer Arctic fjords.COMMUNICATIONS BIOLOGY,7(1). |
| MLA | "Biogeographic gradients of picoplankton diversity indicate increasing dominance of prokaryotes in warmer Arctic fjords".COMMUNICATIONS BIOLOGY 7.1(2024). |
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