Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15852 |
Declining fungal diversity in Arctic freshwaters along a permafrost thaw gradient | |
Mariana Kluge; Maxime Wauthy; Karina Engelbrecht Clemmensen; Christian Wurzbacher; Jeffrey A. Hawkes; Karolina Einarsdottir; Milla Rautio; Jan Stenlid; Sari Peura | |
2021-08-30 | |
发表期刊 | Global Change Biology
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出版年 | 2021 |
英文摘要 | Climate change–driven permafrost thaw has a strong influence on pan-Arctic regions, via, for example, the formation of thermokarst ponds. These ponds are hotspots of microbial carbon cycling and greenhouse gas production, and efforts have been put on disentangling the role of bacteria and archaea in recycling the increasing amounts of carbon arriving to the ponds from degrading watersheds. However, despite the well-established role of fungi in carbon cycling in the terrestrial environments, the interactions between permafrost thaw and fungal communities in Arctic freshwaters have remained unknown. We integrated data from 60 ponds in Arctic hydro-ecosystems, representing a gradient of permafrost integrity and spanning over five regions, namely Alaska, Greenland, Canada, Sweden, and Western Siberia. The results revealed that differences in pH and organic matter quality and availability were linked to distinct fungal community compositions and that a large fraction of the community represented unknown fungal phyla. Results display a 16%–19% decrease in fungal diversity, assessed by beta diversity, across ponds in landscapes with more degraded permafrost. At the same time, sites with similar carbon quality shared more species, aligning a shift in species composition with the quality and availability of terrestrial dissolved organic matter. We demonstrate that the degradation of permafrost has a strong negative impact on aquatic fungal diversity, likely via interactions with the carbon pool released from ancient deposits. This is expected to have implications for carbon cycling and climate feedback loops in the rapidly warming Arctic. |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/337545 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Mariana Kluge,Maxime Wauthy,Karina Engelbrecht Clemmensen,et al. Declining fungal diversity in Arctic freshwaters along a permafrost thaw gradient[J]. Global Change Biology,2021. |
APA | Mariana Kluge.,Maxime Wauthy.,Karina Engelbrecht Clemmensen.,Christian Wurzbacher.,Jeffrey A. Hawkes.,...&Sari Peura.(2021).Declining fungal diversity in Arctic freshwaters along a permafrost thaw gradient.Global Change Biology. |
MLA | Mariana Kluge,et al."Declining fungal diversity in Arctic freshwaters along a permafrost thaw gradient".Global Change Biology (2021). |
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