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Identifying the tree species compositions that maximize ecosystem functioning in European forests
Univ Ghent, Dept Environm, Gontrode, Belgium.
Martin Luther Univ Halle Wittenberg, Inst Biol, Geobot & Bot Garden, Halle, Germany;German Ctr Integrat Biodivers Res iDiv, Leipzig, Germany.
Univ Leipzig, Dept Systemat Bot & Funct Biodivers, Leipzig, Germany;Senckenberg Gesell Naturforsch, Biodivers & Climate Res Ctr, Frankfurt, Germany.
Martin Luther Univ Halle Wittenberg, Inst Biol, Geobot & Bot Garden, Halle, Germany;German Ctr Integrat Biodivers Res iDiv, Leipzig, Germany.
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2019 (English)In: Journal of Applied Ecology, ISSN 0021-8901, E-ISSN 1365-2664, Vol. 56, no 3, p. 733-744Article in journal (Refereed) Published
Abstract [en]

1. Forest ecosystem functioning generally benefits from higher tree species richness, but variation within richness levels is typically large. This is mostly due to the contrasting performances of communities with different compositions. Evidence-based understanding of composition effects on forest productivity, as well as on multiple other functions will enable forest managers to focus on the selection of species that maximize functioning, rather than on diversity per se.

2. We used a dataset of 30 ecosystem functions measured in stands with different species richness and composition in six European forest types. First, we quantified whether the compositions that maximize annual above-ground wood production (productivity) generally also fulfil the multiple other ecosystem functions (multifunctionality). Then, we quantified the species identity effects and strength of interspecific interactions to identify the "best" and "worst" species composition for multifunctionality. Finally, we evaluated the real-world frequency of occurrence of best and worst mixtures, using harmonized data from multiple national forest inventories.

3. The most productive tree species combinations also tended to express relatively high multifunctionality, although we found a relatively wide range of compositions with high- or low-average multifunctionality for the same level of productivity. Monocultures were distributed among the highest as well as the lowest performing compositions. The variation in functioning between compositions was generally driven by differences in the performance of the component species and, to a lesser extent, by particular interspecific interactions. Finally, we found that the most frequent species compositions in inventory data were monospecific stands and that the most common compositions showed below-average multifunctionality and productivity.

4. Synthesis and applications. Species identity and composition effects are essential to the development of high-performing production systems, for instance in forestry and agriculture. They therefore deserve great attention in the analysis and design of functional biodiversity studies if the aim is to inform ecosystem management. A management focus on tree productivity does not necessarily trade-off against other ecosystem functions; high productivity and multifunctionality can be combined with an informed selection of tree species and species combinations.

Place, publisher, year, edition, pages
2019. Vol. 56, no 3, p. 733-744
Keywords [en]
ecosystem multifunctionality, forest management, forestry, FunDivEUROPE, overyielding, productivity, species interactions, tree species mixtures
National Category
Ecology Forest Science
Identifiers
URN: urn:nbn:se:uu:diva-379341DOI: 10.1111/1365-2664.13308ISI: 000459941400023OAI: oai:DiVA.org:uu-379341DiVA, id: diva2:1296562
Funder
EU, FP7, Seventh Framework Programme, 265171Available from: 2019-03-15 Created: 2019-03-15 Last updated: 2019-03-15Bibliographically approved

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