posted on 2023-12-01, 00:29authored byI Franić, E Allan, S Prospero, K Adamson, F Attorre, MA Auger-Rozenberg, S Augustin, D Avtzis, W Baert, M Barta, K Bauters, A Bellahirech, P Boroń, H Bragança, T Brestovanská, MB Brurberg, T Burgess, D Burokienė, M Cleary, J Corley, DR Coyle, G Csóka, K Černý, K Davydenko, M de Groot, JJ Diez, HT Doğmuş Lehtijärvi, R Drenkhan, Jacqueline Edwards, M Elsafy, CB Eötvös, R Falko, J Fan, N Feddern, Á Fürjes-Mikó, MM Gossner, B Grad, M Hartmann, L Havrdova, M Kádasi Horáková, M Hrabětová, MJ Justesen, M Kacprzyk, M Kenis, N Kirichenko, M Kovač, V Kramarets, N Lacković, MV Lantschner, J Lazarević, M Leskiv, H Li, CL Madsen, C Malumphy, D Matošević, I Matsiakh, TW May, J Meffert, D Migliorini, C Nikolov, R O’Hanlon, F Oskay, T Paap, T Parpan, B Piškur, HP Ravn, J Richard, A Ronse, A Roques, B Ruffner, A Santini, K Sivickis, C Soliani, V Talgø, M Tomoshevich, A Uimari, M Ulyshen, AM Vettraino, C Villari, Y Wang, J Witzell, M Zlatković, R Eschen
<p>Non-native pests, climate change, and their interactions are likely to alter relationships between trees and tree-associated organisms with consequences for forest health. To understand and predict such changes, factors structuring tree-associated communities need to be determined. Here, we analysed the data consisting of records of insects and fungi collected from dormant twigs from 155 tree species at 51 botanical gardens or arboreta in 32 countries. Generalized dissimilarity models revealed similar relative importance of studied climatic, host-related and geographic factors on differences in tree-associated communities. Mean annual temperature, phylogenetic distance between hosts and geographic distance between locations were the major drivers of dissimilarities. The increasing importance of high temperatures on differences in studied communities indicate that climate change could affect tree-associated organisms directly and indirectly through host range shifts. Insect and fungal communities were more similar between closely related vs. distant hosts suggesting that host range shifts may facilitate the emergence of new pests. Moreover, dissimilarities among tree-associated communities increased with geographic distance indicating that human-mediated transport may serve as a pathway of the introductions of new pests. The results of this study highlight the need to limit the establishment of tree pests and increase the resilience of forest ecosystems to changes in climate.</p>
Funding
We gratefully acknowledge the financial support of the Swiss National Science Foundation (Project C15.0081) Grant 174644 and the Swiss Federal Office for the Environment Grant 00.0418.PZ/P193-1077. This work was supported by COST Action “Global Warning” (FP1401). R.E., M.K., H.L. and I.F. gratefully acknowledge the core financial support from our CABI member countries (and lead agencies) including the United Kingdom (Foreign, Commonwealth and Development Office), China (Chinese Ministry of Agriculture and Rural Affairs), Australia (Australian Centre for International Agricultural Research), Canada (Agriculture and Agri-Food Canada), Netherlands (Directorate General for International Cooperation), and Switzerland (Swiss Agency for Development and Cooperation). M.B. and M.K.H. were financially supported by the Slovak Research and Development Agency (Project APVV-19-0116). Contributions of M. de G. and B.P. were financed through Slovenian Research Agency (P4-0107) and by the Slovenian Ministry of Agriculture, Forestry and Food (Public Forestry Service). G.C, C.B.E. and A.F.M. were supported by OTKA 128008 research grant provided by the National Research, Development and Innovation Office. Contributions of K.A. and R.D. were supported by the Estonian Research Council grants PSG136 and PRG1615. M.J.J., C.L.M. and H.P.R. were financially supported by the 15. Juni Fonden (Grant 2017-N-123). P.B., B.G. and M.Ka. were financially supported by the Ministry of Science and Higher Education of the Republic of Poland for the University of Agriculture in Krakow (SUB/040013-D019). C.N. was financially supported by the Slovak Research and Development Agency (Grant APVV-15-0531). N.K. was partially supported by the Russian Science Foundation (grant № 22-16-00075) [species identification] and the basic project of Sukachev Institute of Forest SB RAS (№ FWES-2021-0011) [data analysis]. R.OH. was supported by funding from DAERA, and assistance