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Associated Projects




Plant functional identity and diversity effects on ecosystem resistance to and recovery from flooding perturbations


Flood project: Biodiversity is thought to ensure ecosystem functioning in a changing world. A recent flood event opened the opportunity to test this hypothesis in the framework of the Jena grassland biodiversity experiment, where 585 experimental plots experienced a severe summer flood for up to two weeks. Detailed data on plant and soil properties from before and after the flood event have been collected. The present project aims at comprehensively analyzing and synthesizing these data in order to test biodiversity-stability hypotheses (damage, resistance, and recovery) and to explore the role of plant functional identity and functional diversity. 

Funding Period: iDiv (2013-2014)

Contact:
Prof. Dr. Nico Eisenhauer, Friedrich-Schiller-University Jena, Institute of Ecology,Dornburger Str. 159, 07743 Jena
Dr. Anne Ebeling, Friedrich-Schiller-University Jena, Institute of Ecology,Dornburger Str. 159, 07743 Jena
Prof. Dr. Anke Hildebrandt, Institute for Geosciences, Friedrich-Schiller-University Jena, Burgweg 11, D-07749 Jena
Prof. Dr. Hans de Kroon, Experimental Plant Ecology, Institute for Water and Wetland Research, Radboud University Nijmegen, PO Box 9010, 6500 GL Nijmegen
PD Dr. Christiane Roscher, UFZ, Helmholtz Centre for Environmental Research, Department of Community Ecology, Theodor-Lieser-Strasse Straße 4, 06120 Halle
Dr. Alexandra Weigelt, Special Botany and Functional Biodiversity, Institute of Biology, University of Leipzig, Johannisallee 21-23, 04103 Leipzig
Prof. Dr. Wolfgang W. Weisser, Terrestrial Ecology Research Group, Center for Food and Life Sciences Weihenstephan, Technische Universität München, 85354
Freising

Dr. Alexandra (Sasha) Wright




Comparative study in semi-natural grasslands

This associated project has the objective to address the apparent conflict between contrasting results on diversity-productivity relationships in observational and experimental biodiversity studies in temperate grasslands. (1) Six paired study sites have been selected in semi-natural mown grasslands, each comprising a site in the floodplain of the river Saale or its tributaries and a site at an adjacent slope, to represent different environmental conditions. (2) A species removal-enrichment experiment has been established at the six floodplain sites and four selected 10-year old plots of the Jena Experiment (two 60-species mixtures, and two spontaneously colonized plots). Plant functional traits related to the acquisition and use of light and nutrients, which are the most critical resources for plant growth in temperate grasslands, species and community biomass production will be investigated in these study sites. The abundance, range and distribution of functional trait values will be analyzed to evaluate to what extent trait composition differs between semi-natural grasslands under different environmental conditions and in different types of experimentally manipulated grasslands. Relationships between plant traits and community biomass production will be explored to test competing hypotheses on diversity-productivity relationships and to assess whether there are fundamental differences between the mechanisms driving species interactions in semi-natural and different experimentally manipulated grasslands. 

Funding Period: DFG (2012-2015)


Associate (c) Roscher 2013



Contact:
PD Dr. Christiane Roscher (PI)
Department Biozönoseforschung
Helmholtz-Zentrum für Umweltforschung GmbH - UFZ
Theodor-Lieser-Str. 4
06120 Halle (Saale)


Tina Buchmann (PhD student)
Department Biozönoseforschung
Helmholtz-Zentrum für Umweltforschung GmbH - UFZ
Theodor-Lieser-Str. 4
06120 Halle (Saale)