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Title (Primary) Genetic richness affects trait variation but not community productivity in a tree diversity experiment
Author Bongers, F.J.; Schmid, B.; Durka, W.; Li, S.; Bruelheide, H.; Hahn, C.Z.; Yan, H.; Ma, K.; Liu, X.;
Journal New Phytologist
Year 2020
Department BZF; iDiv;
Volume 227
Issue 3
Language englisch;
POF III (all) T11;
Supplements https://nph.onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1111%2Fnph.16567&file=nph16567-sup-0001-SupInfo.pdf
Keywords BEF-China; forest; functional traits; genetic diversity; productivity; species diversity; trait variation
Abstract
  • Biodiversity–ecosystem functioning experiments found that productivity generally increases with species richness, but less is known about effects of within‐species genetic richness and potential interactions between the two. While functional differences between species can explain species richness effects, empirical evidence regarding functional differences between genotypes within species and potential consequences for productivity is largely lacking.
  • We therefore measured within‐ and among‐species variation in functional traits and growth and determined stand‐level tree biomass in a large forest experiment factorially manipulating species and genetic richness in subtropical China.
  • Within‐species variation across genetic seed families, in addition to variation across species, explained a substantial amount of trait variation. Furthermore, trait responses to species and genetic richness varied significantly within and between species. Multivariate trait variation was larger among individuals from species mixtures than from species monocultures, but similar among individuals from genetically diverse vs. genetically uniform monocultures. Correspondingly, species but not genetic richness had a positive effect on stand‐level tree biomass.
  • We argue that identifying functional diversity within and among species in forest communities is necessary to separate effects of species and genetic diversity on tree growth and community productivity.
ID 23054
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=23054
Bongers, F.J., Schmid, B., Durka, W., Li, S., Bruelheide, H., Hahn, C.Z., Yan, H., Ma, K., Liu, X. (2020):
Genetic richness affects trait variation but not community productivity in a tree diversity experiment
New Phytol. 227 (3), 744 - 756