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| DOI | 10.1038/s41467-024-46789-5 |
| Treeline displacement may affect lake dissolved organic matter processing at high latitudes and altitudes | |
| 发表日期 | 2024 |
| EISSN | 2041-1723 |
| 起始页码 | 15 |
| 结束页码 | 1 |
| 卷号 | 15期号:1 |
| 英文摘要 | Climate change induced shifts in treeline position, both towards higher altitudes and latitudes induce changes in soil organic matter. Eventually, soil organic matter is transported to alpine and subarctic lakes with yet unknown consequences for dissolved organic matter (DOM) diversity and processing. Here, we experimentally investigate the consequences of treeline shifts by amending subarctic and temperate alpine lake water with soil-derived DOM from above and below the treeline. We use ultra-high resolution mass spectrometry (FT-ICR MS) to track molecular DOM diversity (i.e., chemodiversity), estimate DOM decay and measure bacterial growth efficiency. In both lakes, soil-derived DOM from below the treeline increases lake DOM chemodiversity mainly through the enrichment with polyphenolic and highly unsaturated compounds. These compositional changes are associated with reductions in bulk and compound-level DOM reactivity and reduced bacterial growth efficiency. Our results suggest that treeline advancement has the potential to enrich a large number of lake ecosystems with less biodegradable DOM, affecting bacterial community function and potentially altering the biogeochemical cycling of carbon in lakes at high latitudes and altitudes. Shifts in the treeline may induce changes in organic matter composition of lakes at high altitude and latitude. Here, the authors experimentally unravel effects of soil-derived DOM for lake carbon biogeochemistry and bacterial carbon use efficiency. |
| 语种 | 英语 |
| WOS研究方向 | Science & Technology - Other Topics |
| WOS类目 | Multidisciplinary Sciences |
| WOS记录号 | WOS:001191874200027 |
| 来源期刊 | NATURE COMMUNICATIONS
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/295117 |
| 作者单位 | Uppsala University; University of Innsbruck; Universite de Lille; Institut de Recherche pour le Developpement (IRD); Universite du Littoral-Cote-d'Opale; Centre National de la Recherche Scientifique (CNRS); Carl von Ossietzky Universitat Oldenburg; Carl von Ossietzky Universitat Oldenburg; Swiss Federal Institutes of Technology Domain; Ecole Polytechnique Federale de Lausanne; Consejo Superior de Investigaciones Cientificas (CSIC); CSIC - Centro de Investigacion y Desarrollo Pascual Vila (CID-CSIC); CSIC - Instituto de Diagnostico Ambiental y Estudios del Agua (IDAEA) |
| 推荐引用方式 GB/T 7714 | . Treeline displacement may affect lake dissolved organic matter processing at high latitudes and altitudes[J],2024,15(1). |
| APA | (2024).Treeline displacement may affect lake dissolved organic matter processing at high latitudes and altitudes.NATURE COMMUNICATIONS,15(1). |
| MLA | "Treeline displacement may affect lake dissolved organic matter processing at high latitudes and altitudes".NATURE COMMUNICATIONS 15.1(2024). |
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