Summer temperature increase has distinct effects on the ectomycorrhizal fungal communities of moist tussock and dry tundra in Arctic Alaska
© 2014 The Authors. Global Change Biology Published by John Wiley & Sons Ltd.
| Veröffentlicht in: | Global change biology. - 1999. - 21(2015), 2 vom: 06. Feb., Seite 959-72 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2015
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| Zugriff auf das übergeordnete Werk: | Global change biology |
| Schlagworte: | Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. ITEX Toolik Lake arctic ecology climate changes fungal ecology fungi long-term ecological research |
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| 100 | 1 | |a Morgado, Luis N |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Summer temperature increase has distinct effects on the ectomycorrhizal fungal communities of moist tussock and dry tundra in Arctic Alaska |
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| 500 | |a Citation Status MEDLINE | ||
| 520 | |a © 2014 The Authors. Global Change Biology Published by John Wiley & Sons Ltd. | ||
| 520 | |a Arctic regions are experiencing the greatest rates of climate warming on the planet and marked changes have already been observed in terrestrial arctic ecosystems. While most studies have focused on the effects of warming on arctic vegetation and nutrient cycling, little is known about how belowground communities, such as fungi root-associated, respond to warming. Here, we investigate how long-term summer warming affects ectomycorrhizal (ECM) fungal communities. We used Ion Torrent sequencing of the rDNA internal transcribed spacer 2 (ITS2) region to compare ECM fungal communities in plots with and without long-term experimental warming in both dry and moist tussock tundra. Cortinarius was the most OTU-rich genus in the moist tundra, while the most diverse genus in the dry tundra was Tomentella. On the diversity level, in the moist tundra we found significant differences in community composition, and a sharp decrease in the richness of ECM fungi due to warming. On the functional level, our results indicate that warming induces shifts in the extramatrical properties of the communities, where the species with medium-distance exploration type seem to be favored with potential implications for the mobilization of different nutrient pools in the soil. In the dry tundra, neither community richness nor community composition was significantly altered by warming, similar to what had been observed in ECM host plants. There was, however, a marginally significant increase in OTUs identified as ECM fungi with the medium-distance exploration type in the warmed plots. Linking our findings of decreasing richness with previous results of increasing ECM fungal biomass suggests that certain ECM species are favored by warming and may become more abundant, while many other species may go locally extinct due to direct or indirect effects of warming. Such compositional shifts in the community might affect nutrient cycling and soil organic C storage | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 4 | |a Research Support, U.S. Gov't, Non-P.H.S. | |
| 650 | 4 | |a ITEX | |
| 650 | 4 | |a Toolik Lake | |
| 650 | 4 | |a arctic ecology | |
| 650 | 4 | |a climate changes | |
| 650 | 4 | |a fungal ecology | |
| 650 | 4 | |a fungi | |
| 650 | 4 | |a long-term ecological research | |
| 650 | 7 | |a DNA, Fungal |2 NLM | |
| 700 | 1 | |a Semenova, Tatiana A |e verfasserin |4 aut | |
| 700 | 1 | |a Welker, Jeffrey M |e verfasserin |4 aut | |
| 700 | 1 | |a Walker, Marilyn D |e verfasserin |4 aut | |
| 700 | 1 | |a Smets, Erik |e verfasserin |4 aut | |
| 700 | 1 | |a Geml, József |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Global change biology |d 1999 |g 21(2015), 2 vom: 06. Feb., Seite 959-72 |w (DE-627)NLM098239996 |x 1365-2486 |7 nnns |
| 773 | 1 | 8 | |g volume:21 |g year:2015 |g number:2 |g day:06 |g month:02 |g pages:959-72 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1111/gcb.12716 |3 Volltext |
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