Open Access

Leho Tedersoo, Vladimir Mikryukov, Alexander Zizka, Mohammad Bahram, Niloufar Hagh-Doust, Sten Anslan, Oleh Prylutskyi, Manuel Delgado-Baquerizo, Fernando T. Maestre, Jaan Pärn, Maarja Öpik, Mari Moora, Martin Zobel, Mikk Espenberg, Ülo Mander, Abdul Nasir Khalid, Adriana Corrales, Ahto Agan, Aída Vasco-Palacios, Alessandro Saitta, Andrea C. Rinaldi, Annemieke Verbeken, Bobby P. Sulistyo, Boris Tamgnoue, Brendan Furneaux, Camila Duarte Ritter, Casper Nyamukondiwa, Cathy Sharp, César Marín, Daniyal Gohar, Darta Klavina, Dipon Sharmah, Dong Qin Dai, Eduardo Nouhra, Elisabeth Machteld Biersma, Elisabeth Rähn, Erin K. Cameron, Eske De Crop, Eveli Otsing, Evgeny A. Davydov, Felipe E. Albornoz, Francis Q. Brearley, Franz Buegger, Geoffrey Zahn, Gregory Bonito, Inga Hiiesalu, Isabel C. Barrio, Jacob Heilmann-Clausen, Jelena Ankuda, John Y. Kupagme, Jose G. Maciá-Vicente, Joseph Djeugap Fovo, József Geml, Juha M. Alatalo, Julieta Alvarez-Manjarrez, Kadri Põldmaa, Kadri Runnel, Kalev Adamson, Kari Anne Bråthen, Karin Pritsch, Kassim I. Tchan, Kęstutis Armolaitis, Kevin D. Hyde, Kevin K. Newsham, Kristel Panksep, Adebola A. Lateef, Liis Tiirmann, Linda Hansson, Louis J. Lamit, Malka Saba, Maria Tuomi, Marieka Gryzenhout, Marijn Bauters, Meike Piepenbring, Nalin Wijayawardene, Nourou Soulemane Yorou, Olavi Kurina, Peter E. Mortimer, Peter Meidl, Petr Kohout, R. Henrik Nilsson, Rasmus Puusepp, Rein Drenkhan, Roberto Garibay Orijel, Roberto Godoy, Saad Alkahtani, Saleh Rahimlou, Sergey V. Dudov, Sergei Põlme, Soumya Ghosh, Sunil Mundra, Talaat Ahmed, Tarquin Netherway, Terry W. Henkel, Tomas Roslin, Vincent Nteziryayo, Vladimir E. Fedosov, Vladimir G. Onipchenko, W. A. Erandi Yasanthika, Young Woon Lim, Nadejda A. Soudzilovskaia, Alexandre Antonelli, Urmas Kõljalg, Kessy Abarenkov

• Fungi play pivotal roles in ecosystem functioning, but little is known about their global patterns of diversity, endemicity, vulnerability to global change drivers and conservation priority areas. We applied the high-resolution PacBio sequencing technique to identify fungi based on a long DNA marker that revealed a high proportion of hitherto unknown fungal taxa. We used a Global Soil Mycobiome consortium dataset to test relative performance of various sequencing depth standardization methods (calculation of residuals, exclusion of singletons, traditional and SRS rarefaction, use of Shannon index of diversity) to find optimal protocols for statistical analyses. Altogether, we used six global surveys to infer these patterns for soil-inhabiting fungi and their functional groups. We found that residuals of log-transformed richness (including singletons) against log-transformed sequencing depth yields significantly better model estimates compared with most other standardization methods. With respect to global patterns, fungal functional groups differed in the patterns of diversity, endemicity and vulnerability to main global change predictors. Unlike α-diversity, endemicity and global-change vulnerability of fungi and most functional groups were greatest in the tropics. Fungi are vulnerable mostly to drought, heat, and land cover change. Fungal conservation areas of highest priority include wetlands and moist tropical ecosystems.