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European mushroom assemblages are phylogenetically structured by temperature

Bässler, Claus, Heilmann-Clausen, Jacob, Andrew, Carrie, Boddy, Lynne ORCID:, Büntgen, Ulf, Diez, Jeffrey, Heegaard, Einar, Egli, Simon, Gange, Alan C., Halvorsen, Rune, Kauserud, Håvard, Kirk, Paul M., Krisai-Greilhuber, Irmgard, Kuyper, Thomas W., Nordén, Jenni, Senn-Irlet, Beatrice and Krah, Franz-Sebastian 2022. European mushroom assemblages are phylogenetically structured by temperature. Ecography 2022 , e06206. 10.1111/ecog.06206

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Recent global warming affects species compositions at an unprecedented rate. To predict climate-induced changes in species assemblages, a better understanding of the link between species occurrence and climate is needed. Macrofungal fruit body assemblages are correlated with the thermal environment at the European scale. However, it is still unknown whether macrofungal communities are also phylogenetically structured by thermal environments. Thermal environments are characterized by annual temperature means but also by intra-annual temperature variability (hereafter termed temperature seasonality), which are both considered in this study. Here, we used distribution data of 2882 species based on fruit body records across Europe to address two main questions: 1) are mushroom assemblages at the extremes of the mean (warm and cold) and seasonal (high intra-annual variability, i.e. continental) climate gradient phylogenetically more similar than expected (phylogenetic alpha diversity); 2) are mushroom assemblages, that are subject to different mean and seasonal temperature conditions, composed of different lineages (phylogenetic beta diversity). Our phylogenetic alpha diversity analysis shows that mushroom assemblages are phylogenetically structured by warm and cold environments, indicating that phylogenetically related species with similar traits thrive under more extreme conditions. In contrast, assemblages are phylogenetically more dissimilar (overdispersed) in temperature seasonal environments, indicating limiting similarity. Phylogenetic beta diversity was significantly correlated with mean and seasonal temperature differences, a response mainly driven by a few genera. Our results show that macrofungal assemblages are phylogenetically structured by temperature across Europe, suggesting phylogenetically constrained specialization towards temperature extremes. Predicted anthropogenic warming is likely to affect species composition and phylogenetic diversity with additional consequences for the carbon- and nutrient cycles.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Biosciences
Publisher: Wiley Open Access
ISSN: 0906-7590
Date of First Compliant Deposit: 20 September 2022
Date of Acceptance: 28 July 2022
Last Modified: 23 May 2023 14:20

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