SP01e Aboveground primary productivity in forest ecosystems as a function of species diversity and composition (sp01e production)
Forests are the most productive vegetation type on Earth and responsible for more than 50 % of global net primary productivity (NPP). Accordingly, forest-mediated carbon (C) fluxes and C storage interact with the global climate. An important question is, therefore, both from a practical and basic science perspective, how biodiversity affects NPP and biomass of forests. Most field studies manipulating plant species diversity so far have been conducted in herbaceous ecosystems and have revealed a positive relationship between species richness and productivity of plants. However, tree communities differ substantially from herbaceous ones with respect to scale, architecture, and longevity of the component individuals, and a number of reasons suggest that not only biodiversity effects on NPP but also the underlying driving mechanisms may differ between the two different vegetation types. In the subproject 1 Europe (P1e), we will continue and extend our assessment of biodiversity effects on NPP. Effects will be analyzed in terms of species richness, the presence/absence of particular species, the composition of plant communities and the diversity of the shrub un-derstory. Larger-scale spatial variation will be accounted for by adopting the Ecoscapes Concept. Standing biomass assessments will distinguish woody and leaf biomass, and we will estimate the turnover of woody and leaf biomass, since these can dominate NPP, depending on conditions. We closely collaborate with the subproject of our Chinese partner, Keping Ma, who focuses on belowground productivity, to be able to integrate these measurements to the ecosystem level. In collaboration with the other subprojects, we further provide data and contribute to the development of allometric relations for the respective species, the estimation of C and nutrient stocks, as well as estimates of leaf damage.
Datasets
- Allometries: Basal area increment of harvested trees
- Allometries: Tree species growth, biomass and crown data for detailed allometries
- CSPs: LAI and PAR Gutianshan 2009
- CSPs: LAI data in spring and summer of 2012
- CSPs: subplot naming conventions
- CSPs: Tree growth of trees >10cm dbh in the CSPs (2008-2012)
- CSPs: Tree growth of trees with a DBH between 3 and 10cm in the CSPs (2008-2012)
- CSPs: Tree growth of trees with dbh of 3 to 10cm dbh in the CSPs (2008-2010)
- CSPs: Tree size in the CSPs in 2008 and 2009
- CSP successional age estimates based on stem diameter distribution and tree ring width
- CSP total tree basal area without the snowbreak trees
- Data for Schuldt et al. "Biodiversity across trophic levels drives multifunctionality in highly diverse forests"
- Main Experiment: Herbivore damage in site A in summer 2009
- Main Experiment: inventory data (SP1: 1/3) Site A 2009-2012 and site B 2010-2013
- Main Experiment: inventory data (SP1: 1a/3) Site A 2009-2012 and site B 2010-2013
- Main Experiment: Leaf demography in the Main Experiment - 2011
- Main Experiment: list of plots (SP1: 2/3)
- Main Experiment: list of species (SP1: 3/3)
- Main Experiment: Litter nutrient concentrations from littertraps (SiteA)
- Main Experiment: Tree size in the Main Experiment - Site A 2009-2012 & site B 2010-2012
- Pilot experiment: biomass shade-light
- Pilot experiment: herbivore damage in fall 2010
- Pilot experiment: monthly growth (March-September 2010)
- Pilot experiment: monthly growth (May 2009-February 2010)
- Pilot experiment: plot treatment and -location within the blocks
- Talk BEF summerschool 2011: Design and Analysis of the Pilot Experiment
- Talk BEF summerschool 2011: R notes for the workshop
- Tree and shrub seedlings functional traits from a transplant experiment in Dujiangyan
- Tree and shrub species functional traits across a light-availability gradient in Dujiangyan
- Tree and shrub species functional traits in Dujiangyan
- Tree and shrub species growth data across a light-availability gradient in Dujiangyan
Paper proposal submissions
Published
2019
- sp01e production, Li, X.: 2019, Net Assimilation Rate Determines the Growth Rates of 14 Species of Subtropical Forest Trees, Proponents and dataowners: Bernhard Schmid, Xuefei Li, Citation: PLosOne http://dx.doi.org/10.5061/dryad.5kb61
- sp01e production, Li, X.: 2019, Decomposing functional trait associations in a Chinese subtropical forest, Proponents and dataowners: Bernhard Schmid, Kequan Pei, Pascal Niklaus, Xuefei Li, Citation: PLos One https://doi.org/10.1371/journal.pone.0175727
2017
2016
- sp01e production, Brezzi, M.: 2016, Tree diversity increases levels of herbivore damage in a subtropical forest canopy: evidence for dietary mixing by arthropods?, Proponents and dataowners: Andreas Schuldt, Bernhard Schmid, Matteo Brezzi, Pascal Niklaus, Citation: Journal of Plant Ecology
- sp01e production, Huang, Y.: 2016, Positive effects of tree species diversity on litterfall quantity and quality along a secondary successional chronosequence in a subtropical forest, Proponents and dataowners: Bernhard Schmid, Pascal Niklaus, Yuanyuan Huang, Citation: Journal of Plant Ecology
- sp01e production, Schmid, B.: 2016, A guide to analyzing biodiversity experiments, Proponents and dataowners: Bernhard Schmid, Martin Baruffol, Pascal Niklaus, Citation: Journal of Plant Ecology
- sp01e production, Niklaus, P.: 2016, Can niche plasticity promote biodiversity-productivity relationships through increased complementarity?, Proponents and dataowners: Bernhard Schmid, Jin-Sheng He, Martin Baruffol, Pascal Niklaus, Citation: Ecology
2013
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Bernhard Schmid, Prof. 2nd Principle investigator
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Pascal Niklaus, PD Dr. Principle investigator
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Andy Hector, Prof. 2nd Principle investigator
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Matteo Brezzi PhD student
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Nadia Castro PhD student
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Yuanyuan Huang PhD student
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Martin Baruffol Former PhD student
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Andreas Kundela Former PhD student
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Yann Salmon Former PostDoc
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Juliana Nates Jimenez Former Technician
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David Emmerth Former Student
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Yu-Chuan Wang Former Student