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Type: Artigo
Title: Land-use Intensification Causes Multitrophic Homogenization Of Grassland Communities
Author: Gossner
Martin M.; Lewinsohn
Thomas M.; Kahl
Tiemo; Grassein
Fabrice; Boch
Steffen; Prati
Daniel; Birkhofer
Klaus; Renner
Swen C.; Sikorski
Johannes; Wubet
Tesfaye; Arndt
Hartmut; Baumgartner
Vanessa; Blaser
Stefan; Bluethgen
Nico; Boerschig
Carmen; Buscot
Francois; Diekoetter
Tim; Jorge
Leonardo Re; Jung
Kirsten; Keyel
Alexander C.; Klein
Alexandra-Maria; Klemmer
Sandra; Krauss
Jochen; Lange
Markus; Mueller
Joerg; Overmann
Joerg; Pasalic
Esther; Penone
Caterina; Perovic
David J.; Purschke
Oliver; Schall
Peter; Socher
Stephanie A.; Sonnemann
Ilja; Tschapka
Marco; Tscharntke
Teja; Tuerke
Manfred; Venter
Paul Christiaan; Weiner
Christiane N.; Werner
Michael; Wolters
Volkmar; Wurst
Susanne; Westphal
Catrin; Fischer
Markus; Weisser
Wolfgang W.; Allan
Abstract: Land-use intensification is a major driver of biodiversity loss(1,2). Alongside reductions in local species diversity, biotic homogenization at larger spatial scales is of great concern for conservation. Biotic homogenization means a decrease in beta-diversity (the compositional dissimilarity between sites). Most studies have investigated losses in local (alpha)-diversity(1,3) and neglected biodiversity loss at larger spatial scales. Studies addressing beta-diversity have focused on single or a few organism groups (for example, ref. 4), and it is thus unknown whether land-use intensification homogenizes communities at different trophic levels, above-and belowground. Here we show that even moderate increases in local land-use intensity (LUI) cause biotic homogenization across microbial, plant and animal groups, both above- and belowground, and that this is largely independent of changes in alpha-diversity. We analysed a unique grassland biodiversity dataset, with abundances of more than 4,000 species belonging to 12 trophic groups. LUI, and, in particular, high mowing intensity, had consistent effects on beta-diversity across groups, causing a homogenization of soil microbial, fungal pathogen, plant and arthropod communities. These effects were nonlinear and the strongest declines in beta-diversity occurred in the transition from extensively managed to intermediate intensity grassland. LUI tended to reduce local alpha-diversity in aboveground groups, whereas the alpha-diversity increased in belowground groups. Correlations between the alpha-diversity of different groups, particularly between plants and their consumers, became weaker at high LUI. This suggests a loss of specialist species and is further evidence for biotic homogenization. The consistently negative effects of LUI on landscape-scale biodiversity underscore the high value of extensively managed grasslands for conserving multitrophic biodiversity and ecosystem service provision. Indeed, biotic homogenization rather than local diversity loss could prove to be the most substantial consequence of land-use intensification.
Editor: Nature Publishing Group
Citation: Nature. Nature Publishing Group , v. 540, p. 266 - 269, 2016.
Rights: fechado
Identifier DOI: 10.1038/nature20575
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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