Traits and phylogenies modulate the environmental responses of wood-inhabiting fungal communities across spatial scales

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Identifying the spatial scales at which community assembly processes operate is fundamental for gaining a mechanistic understanding of the drivers shaping ecological communities. In this study, we examined whether and how traits and phylogenetic relationships structure fungal community assembly across spatial scales. We applied joint species distribution modelling to a European-scale dataset on 215 wood-inhabiting fungal species, which includes data on traits, phylogeny and environmental variables measured at the local (log-level) and regional (site-level) scales. At the local scale, wood-inhabiting fungal communities were mostly structured by deadwood decay stage, and the trait and phylogenetic patterns along this environmental gradient suggested the lack of diversifying selection. At regional scales, fungal communities and their trait distributions were influenced by climatic and connectivity-related variables. The fungal climatic niches were not phylogenetically structured, suggesting that diversifying selection or stabilizing selection for climatic niches has played a strong role in wood-inhabiting communities. In contrast, we found a strong phylogenetic signal in the responses to connectivity-related variables, revealing phylogenetic homogenization in small and isolated forests. Synthesis. Altogether, our results show that species-level traits and phylogenies modulate the responses of wood-inhabiting fungi to environmental processes acting at different scales. This result suggests that the evolutionary histories of fungal traits diverge along different environmental axes.

OriginalsprogEngelsk
TidsskriftJournal of Ecology
Vol/bind110
Udgave nummer4
Sider (fra-til)784-798
Antal sider15
ISSN0022-0477
DOI
StatusUdgivet - 2022

Bibliografisk note

Funding Information:
We are grateful to the original NatMan myco‐team, Andrej Piltaver, Mirjam Veerkamp, Ruben Walleyn† and Irén Siller for collecting part of the dataset. Slavomír Adamčík, Stanislav Glejdura, Ján Holec, Soňa Jančovičová, Vladimír Kunca, Alfedo Di Filippo, Gianluca Piovesan, Alan Lucas, Rosemary Davies, Helen Read, Jeremy Dagley and George Peterken are thanked for their great help and a great time in the field, and for arranging field work during data collection in Slovakia, Italy and the United Kingdom. We are also grateful to all land owners/managers who kindly granted us access to the sampling sites. Reinhard Pekny is thanked for guiding and helping us to access Rothwald. The other members of the Beech Boys, Erik Aude, Rasmus Fuglsang Frederiksen, Örjan Fritz, Péter Òdor and Klaas van Dort are thanked for their great company on the numerous field trips behind this study. We acknowledge the Danish Mycological Society and the Jacob E. Lange foundation for supporting part of the field work and the Academy of Finland for supporting the first author during the preparation of this manuscript (grant no. 308651).

Publisher Copyright:
© 2022 The Authors. Journal of Ecology published by John Wiley & Sons Ltd on behalf of British Ecological Society.

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