دورية أكاديمية
Long-term increase in snow depth leads to compositional changes in arctic ectomycorrhizal fungal communities.
| العنوان: | Long-term increase in snow depth leads to compositional changes in arctic ectomycorrhizal fungal communities. |
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| المؤلفون: | Morgado LN; Naturalis Biodiversity Center, P.O. Box 9517, 2300 RA, Leiden, The Netherlands.; Section for Genetics and Evolutionary Biology (Evogene), Department of Biosciences, University of Oslo, P.O. Box 1066 Blindern, NO-0316, Oslo, Norway., Semenova TA; Naturalis Biodiversity Center, P.O. Box 9517, 2300 RA, Leiden, The Netherlands.; Faculty of Science, Leiden University, P.O. Box 9502, 2300 RA, Leiden, The Netherlands., Welker JM; Department of Biological Sciences, University of Alaska Anchorage, Anchorage, AK, USA., Walker MD; HOMER Energy, 1790 30th St, Suite 100, Boulder, CO, 80301, USA., Smets E; Naturalis Biodiversity Center, P.O. Box 9517, 2300 RA, Leiden, The Netherlands.; Faculty of Science, Leiden University, P.O. Box 9502, 2300 RA, Leiden, The Netherlands.; Plant Conservation and Population Biology, KU Leuven, Kasteelpark Arenberg 31, Box 2437, 3001, Leuven, Belgium., Geml J; Naturalis Biodiversity Center, P.O. Box 9517, 2300 RA, Leiden, The Netherlands.; Faculty of Science, Leiden University, P.O. Box 9502, 2300 RA, Leiden, The Netherlands. |
| المصدر: | Global change biology [Glob Chang Biol] 2016 Sep; Vol. 22 (9), pp. 3080-96. Date of Electronic Publication: 2016 Jun 08. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Blackwell Pub Country of Publication: England NLM ID: 9888746 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1365-2486 (Electronic) Linking ISSN: 13541013 NLM ISO Abbreviation: Glob Chang Biol Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: Original Publication: Oxford, UK : Blackwell Science, 1995- |
| مواضيع طبية MeSH: | Mycorrhizae* , Snow*, Alaska ; Arctic Regions ; Soil ; Tundra |
| مستخلص: | Many arctic ecological processes are regulated by soil temperature that is tightly interconnected with snow cover distribution and persistence. Recently, various climate-induced changes have been observed in arctic tundra ecosystems, e.g. shrub expansion, resulting in reduction in albedo and greater C fixation in aboveground vegetation as well as increased rates of soil C mobilization by microbes. Importantly, the net effects of these shifts are unknown, in part because our understanding of belowground processes is limited. Here, we focus on the effects of increased snow depth, and as a consequence, increased winter soil temperature on ectomycorrhizal (ECM) fungal communities in dry and moist tundra. We analyzed deep DNA sequence data from soil samples taken at a long-term snow fence experiment in Northern Alaska. Our results indicate that, in contrast with previously observed responses of plants to increased snow depth at the same experimental site, the ECM fungal community of the dry tundra was more affected by deeper snow than the moist tundra community. In the dry tundra, both community richness and composition were significantly altered while in the moist tundra, only community composition changed significantly while richness did not. We observed a decrease in richness of Tomentella, Inocybe and other taxa adapted to scavenge the soil for labile N forms. On the other hand, richness of Cortinarius, and species with the ability to scavenge the soil for recalcitrant N forms, did not change. We further link ECM fungal traits with C soil pools. If future warmer atmospheric conditions lead to greater winter snow fall, changes in the ECM fungal community will likely influence C emissions and C fixation through altering N plant availability, fungal biomass and soil-plant C-N dynamics, ultimately determining important future interactions between the tundra biosphere and atmosphere. (© 2016 The Authors. Global Change Biology Published by John Wiley & Sons Ltd.) |
| فهرسة مساهمة: | Keywords: ITEX; Toolik Lake; arctic ecology; climate changes; fungal ecology; snow fence; snow pack |
| سلسلة جزيئية: | GENBANK KJ792685; KP827673; KP828017 |
| المشرفين على المادة: | 0 (Soil) |
| تواريخ الأحداث: | Date Created: 20160324 Date Completed: 20170731 Latest Revision: 20181202 |
| رمز التحديث: | 20231215 |
| DOI: | 10.1111/gcb.13294 |
| PMID: | 27004610 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1365-2486 |
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| DOI: | 10.1111/gcb.13294 |