Alternative stable states of the forest mycobiome are maintained through positive feedbacks.
Journal
Nature ecology & evolution
ISSN: 2397-334X
Titre abrégé: Nat Ecol Evol
Pays: England
ID NLM: 101698577
Informations de publication
Date de publication:
04 2022
04 2022
Historique:
received:
18
01
2021
accepted:
04
01
2022
pubmed:
26
2
2022
medline:
9
4
2022
entrez:
25
2
2022
Statut:
ppublish
Résumé
Most trees on Earth form a symbiosis with either arbuscular mycorrhizal or ectomycorrhizal fungi. By forming common mycorrhizal networks, actively modifying the soil environment and other ecological mechanisms, these contrasting symbioses may generate positive feedbacks that favour their own mycorrhizal strategy (that is, the con-mycorrhizal strategy) at the expense of the alternative strategy. Positive con-mycorrhizal feedbacks set the stage for alternative stable states of forests and their fungi, where the presence of different forest mycorrhizal strategies is determined not only by external environmental conditions but also mycorrhiza-mediated feedbacks embedded within the forest ecosystem. Here, we test this hypothesis using thousands of US forest inventory sites to show that arbuscular and ectomycorrhizal tree recruitment and survival exhibit positive con-mycorrhizal density dependence. Data-driven simulations show that these positive feedbacks are sufficient in magnitude to generate and maintain alternative stable states of the forest mycobiome. Given the links between forest mycorrhizal strategy and carbon sequestration potential, the presence of mycorrhizal-mediated alternative stable states affects how we forecast forest composition, carbon sequestration and terrestrial climate feedbacks.
Identifiants
pubmed: 35210576
doi: 10.1038/s41559-022-01663-9
pii: 10.1038/s41559-022-01663-9
pmc: PMC7612595
mid: EMS140709
doi:
Types de publication
Journal Article
Research Support, U.S. Gov't, Non-P.H.S.
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
375-382Subventions
Organisme : Swiss National Science Foundation
ID : 179900
Pays : Switzerland
Informations de copyright
© 2022. The Author(s), under exclusive licence to Springer Nature Limited.
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