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Diversity-enhanced canopy space occupation and leaf functional diversity jointly promote overyielding in tropical tree communities.
Ray, Tama; Fichtner, Andreas; Kunz, Matthias; Proß, Tobias; Bradler, Pia M; Bruelheide, Helge; Georgi, Louis; Haider, Sylvia; Hildebrand, Michaela; Potvin, Catherine; Schnabel, Florian; Trogisch, Stefan; von Oheimb, Goddert.
Afiliação
  • Ray T; Institute of General Ecology and Environmental Protection, TUD Dresden University of Technology, Tharandt, Germany; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany; Institute of Biology/Geobotany and Botanical Garden, Martin Luther University Halle-Wit
  • Fichtner A; Institute of Ecology, Leuphana University of Lüneburg, Lüneburg, Germany.
  • Kunz M; Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences, Telegrafenberg, 14473 Potsdam, Germany.
  • Proß T; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany; Institute of Biology/Geobotany and Botanical Garden, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.
  • Bradler PM; Institute of General Ecology and Environmental Protection, TUD Dresden University of Technology, Tharandt, Germany; Institute of Ecology, Leuphana University of Lüneburg, Lüneburg, Germany.
  • Bruelheide H; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany; Institute of Biology/Geobotany and Botanical Garden, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.
  • Georgi L; Institute of General Ecology and Environmental Protection, TUD Dresden University of Technology, Tharandt, Germany.
  • Haider S; Institute of Ecology, Leuphana University of Lüneburg, Lüneburg, Germany.
  • Hildebrand M; ThüringenForst-AöR State Forest, Hallesche Straße 20, 99085 Erfurt, Germany.
  • Potvin C; Department of Biology, McGill University, 1205 Dr Penfield, Montréal, Québec H3A 1B1, Canada; Smithsonian Tropical Research Institute, Panama, Panama.
  • Schnabel F; Chair of Silviculture, Institute of Forest Sciences, University of Freiburg, Tennenbacherstr. 4, 79085 Freiburg, Germany.
  • Trogisch S; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany; Institute of Biology/Geobotany and Botanical Garden, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.
  • von Oheimb G; Institute of General Ecology and Environmental Protection, TUD Dresden University of Technology, Tharandt, Germany.
Sci Total Environ ; 951: 175438, 2024 Aug 10.
Article em En | MEDLINE | ID: mdl-39134282
ABSTRACT
Understanding the mechanisms that drive biodiversity-productivity relationships is critical for guiding forest restoration. Although complementarity among trees in the canopy space has been suggested as a key mechanism for greater productivity in mixed-species tree communities, empirical evidence remains limited. Here, we used data from a tropical tree diversity experiment to disentangle the effects of tree species richness and community functional characteristics (community-weighted mean and functional diversity of leaf traits) on canopy space filling, and how these effects are related to overyielding. We found that canopy space filling was largely explained by species identity effects rather than tree diversity effects. Communities with a high abundance of species with a conservative resource-use strategy were those with most densely packed canopies. Across monocultures and mixtures, a higher canopy space filling translated into an enhanced wood productivity. Importantly, most communities (83 %) produced more wood volume than the average of their constituent species in monoculture (i.e. most communities overyielded). Our results show that overyielding increased with leaf functional diversity and positive net biodiversity effects on canopy space filling, which mainly arose due to a high taxonomic diversity. These findings suggest that both taxonomic diversity-enhanced canopy space filling and canopy leaf diversity are important drivers for overyielding in mixed-species forests. Consequently, restoration initiatives should promote stands with functionally diverse canopies by selecting tree species with large interspecific differences in leaf nutrition, as well as leaf and branch morphology to optimize carbon capture in young forest stands.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article