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| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Formato: | Artículo Open Access |
| Publicado: |
Wiley
2025
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| Materias: | |
| Acceso en línea: | https://nsojournals.onlinelibrary.wiley.com/doi/10.1002/ecog.08045 |
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- Impacts of large herbivores on mycorrhizal fungal communities across the Arctic Cole G. Brachmann Martin Ryberg Brendan R. Furneaux Anna Rosling Tinghai Ou Alf Ekblad Svetlana Abdulmanova Isabel C. Barrio M. Syndonia Bret‐Harte Hannu Fritze Laura Gough Robert D. Hollister Ingibjörg S. Jónsdóttir Oula Kalttopää Elin Lindén Päivi Mäkiranta Johan Olofsson Rauni Partanen Kirsten A. Reid Aleksandr Sokolov Maija S. Sujala Maja K. Sundqvist Otso Suominen Craig E. Tweedie Amanda Young Robert G. Björk Ecography Mycorrhizal fungi play an integral role in nutrient and carbon cycling in soils, which may be especially important in the Arctic, one of the world's most soil carbon‐rich regions. Large mammalian herbivores can influence these fungi through their impacts on vegetation and soil conditions, however the strength and prevalence of these interactions in the Arctic is still uncertain. We collected soils from 15 large mammal exclusion experiments across the Arctic. We sequenced both ITS regions and partial SSU regions using two sets of amplicons to determine the composition of soil mycorrhizal fungal communities. This allowed us to assess how these communities are impacted by exclusion of large mammalian herbivores, plant communities, and climate and soil properties. Large mammalian herbivore exclusion had a significant impact on the arbuscular mycorrhizal (AM) community dissimilarity between sites. The AM community was also influenced by growing season temperature and pH, which may indicate that conditions are becoming more favourable for these species in some Arctic communities. Large herbivore exclusion did not have a coherent impact on ectomycorrhizal and ericoid mycorrhizal fungal community dissimilarity, which were primarily correlated with δ 15 N signature in the soil, rather than herbivory, climate, or plant functional types. The consistent detection of arbuscular mycorrhizal fungi identified highlights the need for more thorough evaluations of these communities and their role in Arctic carbon and nutrient dynamics, as these fungi are currently understudied in the Arctic. 10.1002/ecog.08045 http://creativecommons.org/licenses/by/3.0/