Functional rarity and evenness are key facets of biodiversity to boost multifunctionality

TitleFunctional rarity and evenness are key facets of biodiversity to boost multifunctionality
Publication TypeJournal Article
Year of Publication2021
AuthorsLe Bagousse-Pinguet Y., Gross N., Saiz H., Maestre F.T, Ruiz S., Dacal M., Asensio S., Ochoa V., Gozalo B., Cornelissen J.HC, Deschamps L., Garcia C., Maire V., Milla R., Salinas N., Wang J.T, Singh B.K, Garcia-Palacios P.
JournalProceedings of the National Academy of Sciences of the United States of America
Volume118
Pagination8
Date PublishedFeb
Type of ArticleArticle
ISBN Number0027-8424
Accession NumberWOS:000621748600046
Keywordscomplex species assemblages, consequences, diversity, driver, ecosystems, fungal community, litter decomposition, nutrient cycling, plant pathogens, Science & Technology - Other Topics, soil, trait distributions, TRAITS
Abstract

The functional traits of organisms within multispecies assemblages regulate biodiversity effects on ecosystem functioning. Yet how traits should assemble to boost multiple ecosystem functions simultaneously (multifunctionality) remains poorly explored. In a multibiome litter experiment covering most of the global variation in leaf trait spectra, we showed that three dimensions of functional diversity (dispersion, rarity, and evenness) explained up to 66% of variations in multifunctionality, although the dominant species and their traits remained an important predictor. While high dispersion impeded multifunctionality, increasing the evenness among functionally dissimilar species was a key dimension to promote higher multifunctionality and to reduce the abundance of plant pathogens. Because too-dissimilar species could have negative effects on ecosystems, our results highlight the need for not only diverse but also functionally even assemblages to promote multifunctionality. The effect of functionally rare species strongly shifted from positive to negative depending on their trait differences with the dominant species. Simultaneously managing the dispersion, evenness, and rarity in multispecies assemblages could be used to design assemblages aimed at maximizing multifunctionality independently of the biome, the identity of dominant species, or the range of trait values considered. Functional evenness and rarity offer promise to improve the management of terrestrial ecosystems and to limit plant disease risks.

Short TitleProc. Natl. Acad. Sci. U. S. A.Proc. Natl. Acad. Sci. U. S. A.
Alternate JournalProc. Natl. Acad. Sci. U. S. A.
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Times Cited: 0
Cited Reference Count: 55
Le Bagousse-Pinguet, Yoann Gross, Nicolas Saiz, Hugo Maestre, Fernando T. Ruiz, Sonia Dacal, Marina Asensio, Sergio Ochoa, Victoria Gozalo, Beatriz Cornelissen, Johannes H. C. Deschamps, Lucas Garcia, Carlos Maire, Vincent Milla, Ruben Salinas, Norma Wang, Juntao Singh, Brajesh K. Garcia-Palacios, Pablo
; Saiz, Hugo/K-8724-2014
Asensio, Sergio/0000-0003-4376-2964; Singh, Brajesh/0000-0003-4413-4185; Saiz, Hugo/0000-0002-7568-2996
British Ecological Society [SR17\1297]; European Research Council (ERC)European Research Council (ERC)European Commission [647038]; Marie Sklodowska-Curie Actions Individual Fellowship within the European Program Horizon 2020 (DRYFUN Project) [656035]; Spanish Ministry of Economy and Competitiveness [FJCI-2015-26782]; Generalitat ValencianaGeneralitat ValencianaEuropean Commission [CIDEGENT/2018/041]; Spanish Ministry of Education, Culture and Sports [FPU-15/00392]; Spanish MINECO; Australian Research CouncilAustralian Research Council [DP170104634, DP190103714]; Spanish Ministry of Science and InnovationSpanish Government [RYC2018-024766-I]; MINECO [CGL2014-56567-R, CGL2017-83855-R]
We thank Luis Cayuela for help during litter collection. This work was funded by the British Ecological Society (SR17\1297 grant, PI: P.G.-P.) and by the European Research Council (ERC Grant Agreement #647038, BIODESERT, PI: F.T.M.). Y.L. B.-P. was supported by a Marie Sklodowska-Curie Actions Individual Fellowship within the European Program Horizon 2020 (DRYFUN Project #656035). H.S. was supported by a Juan de la Cierva-Formacion grant from the Spanish Ministry of Economy and Competitiveness (FJCI-2015-26782). F.T.M. and S.A. were supported from the Generalitat Valenciana (CIDEGENT/2018/041). M.D. was supported by a Formacion del Profesorado Universitario (FPU) fellowship from the Spanish Ministry of Education, Culture and Sports (FPU-15/00392). S.A. was supported by the Spanish MINECO for financial support via the DIGGING_DEEPER project through the 2015 to 2016 BiodivERsA3/FACCE-JPI joint call for research proposals. B.K.S. research on biodiversity-ecosystem functions was supported by the Australian Research Council (DP170104634 and DP190103714). P.G.-P. was supported by a Ramon y Cajal grant from the Spanish Ministry of Science and Innovation (RYC2018-024766-I). R.M. was supported by MINECO (Grants CGL2014-56567-R and CGL2017-83855-R).

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Le Bagousse-Pinguet, Y (corresponding author), Aix Marseille Univ, Avignon Univ, Inst Rech Dev IRD,CNRS, Inst Mediterraneen Biodiversite & Ecol Marine & C, Technopole Arbois Mediterranee Bat Villemin,BP 80, F-13545 Aix En Provence 04, France.; Le Bagousse-Pinguet, Y; Garcia-Palacios, P (corresponding author), Univ Rey Juan Carlos, Dept Biol & Geol Fis & Quim Inorgan & Analit, Escuela Super Ciencias Expt & Tecnol, Mostoles 28933, Spain.; Garcia-Palacios, P (corresponding author), CSIC, Inst Ciencias Agr, Madrid 28006, Spain.
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