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Can bryophyte groups increase functional resolution in tundra ecosystems?
Authors
Juha Alatalo
Antoine Becker-scarpitta
+40 more
Katlyn Rose Betway
Sara Busca
Terry Callaghan
Michele Carbognani
Casper T. Christiansen
Elisabeth J. Cooper
Johannes H. C. Cornelissen
Ellen Dorrepaal
Heinjo During
Ecology and Biodiversity
Dagmar Egelkraut
Flemming Ekelund
Tatiana G. Elumeeva
Siri V. Haugum
Greg H.r. Henry
Robert D. Hollister
Annika K. Jägerbrand
Ingibjörg Svala Jónsdóttir
Frida Keuper
Kari Klanderud
Simone Lang
Signe Lett
Xin Liu
Esther Lévesque
Jeremy May
Pascale Michel
Anders Michelsen
Martin A Mörsdorf
Alessandro Petraglia
Christian Rixen
Bjorn Robroek
Kathrin Rousk
Agnieszka M. Rzepczynska
Nadia Soudzilovskaia
Sub Ecology and Biodiversity
Anne Tolvanen
Kristel Van Zuijlen
Vigdis Vandvik
Igor Volkov
Irina Volkova
Publication date
1 January 2021
Publisher
Doi
Cite
Abstract
Funding Information: This study was supported by a grant to SL from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie, Grant No. 797446 and by the Independent Research Fund Denmark, Grant no. 0135-00140B. Funding from the Academy of Finland (grant 322266), National Science Foundation (1504224, 1836839, PLR-1504381 and PLR-1836898), Independent Research Fund Denmark (9040-00314B), Moscow State University, (project No 121032500089-1), Natural Sciences and Engineering Research Council of Canada, ArcticNet, Polar Continental Shelf Program, Northern Science Training Program, Polar Knowledge Canada, Royal Canadian Mounted Police, Tomsk State University competitiveness improvement program and the Russian Science Foundation (grant No 20-67-46018) are gratefully acknowledged. Matthias Ahrens provided valuable insights on the cushion growth form, and we are most thankful. We thank Gaius Shaver and two anonymous reviewers for providing valuable critique and input to earlier versions of this manuscript. Publisher Copyright: © the author(s) or their institution(s).The relative contribution of bryophytes to plant diversity, primary productivity, and ecosystem functioning increases towards colder climates. Bryophytes respond to environmental changes at the species level, but because bryophyte species are relatively difficult to identify, they are often lumped into one functional group. Consequently, bryophyte function remains poorly resolved. Here, we explore how higher resolution of bryophyte functional diversity can be encouraged and implemented in tundra ecological studies. We briefly review previous bryophyte functional classifications and the roles of bryophytes in tundra ecosystems and their susceptibility to environmental change. Based on shoot morphology and colony organization, we then propose twelve easily distinguishable bryophyte functional groups. To illustrate how bryophyte functional groups can help elucidate variation in bryophyte effects and responses, we compiled existing data on water holding capacity, a key bryophyte trait. Although plant functional groups can mask potentially high interspecific and intraspecific variability, we found better separation of bryophyte functional group means compared with previous grouping systems regarding water holding capacity. This suggests that our bryophyte functional groups truly represent variation in the functional roles of bryophytes in tundra ecosystems. Lastly, we provide recommendations to improve the monitoring of bryophyte community changes in tundra study sites.Peer reviewe
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