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Vortragsreihe Ökologie und Umweltforschung SS 2016

Donnerstag 12:00-13:30 H6, Geo


Prof. Otmar Urban
Division of Impact Studies and Ecophysiological Analyses, CzechGlobe, Czech Academy of Sciences, Brno, CZ (Homepage)
Donnerstag, 14.04.2016 12:00-13:30 H6, GEO:

Plant responses to climate change: impacts and adaptation

The Global Change Research Institute (CzechGlobe) forms a part of the Czech Academy of Sciences. The activities of CzechGlobe focus on issues of global climate change, which by its nature and possible consequences extends beyond the basic thematic segments of atmosphere, ecosystem, and socio-economic system. The mission statement of the Division of Impact Studies and Ecophysiological Analyses is to investigate molecular (key metabolic pathways) and physiological mechanisms responsible for adaptation, acclimation, and resistance of plants to the effects environmental perturbances (in particular elevated CO2 concentration, temperature extremes, drought periods, and changes in spectral composition of light and nutrition supply etc.). Moreover, the Division focus on the development and application of new methodological approaches in environmental metabolomics, phenotyping and early-stress detection in plants.

A complex investigation of plants responses, in particular connected with processes of carbon uptake, to different sky conditions (radiation quality, temperature, vapour pressure deficit etc.) represents one of the major methodological approaches. We have elucidated, among other things, increased light use efficiency of ecosystem carbon uptake under cloudy sky conditions with prevailing diffuse radiation and how forests maintain a positive C balance, despite having an apparently high self-shading degree. Penetration of diffuse radiation into lower canopy depths has direct effects on the productivity and structure of vegetation and is crucial for the modelling of global C cycle. We have also shown that a stimulation of photosynthesis rate by an elevated atmospheric CO2 concentration (EC), in contrary to clear sky, is negligible or even reduced under cloudy sky conditions. Such reduction is associated mainly with EC-stimulated thermal dissipation of absorbed light energy and insufficient openness of stomata. This result indicates that an expected increase in cloud cover associated with climate warming may reduce the stimulatory effect of EC on plants C uptake and growth.



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DatumVortragenderTitel
14.04.2016Prof. Otmar Urban
Division of Impact Studies and Ecophysiological Analyses, CzechGlobe, Czech Academy of Sciences, Brno, CZ
Plant responses to climate change: impacts and adaptation [Abstract]
21.04.2016Dr. Florian R.Storck
DVGW-Technologiezentrum Wasser, Karlsruhe
Mikroplastik in Wasserressourcen – Anforderungen an die Analytik und erste Ergebnisse [Abstract]
S 21, GEO-Gebäude
14:00-16:00
21.04.2016
Dr. Jana Bürger
Department Crop Health, Rostock University
Arable weeds under climate and land-use change – how ecological methods help agricultural researchers [Abstract]
28.04.2016Dr. Michael Sander
Environmental Chemistry, Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, Switzerland
Fate of biodegradable polyesters in agricultural soils - from enzymatic hydrolysis to microbial uptake and mineralization [Abstract]
12.05.2016Prof. Jon Petter Gustafsson
Soil and Groundwater Chemistry, KTH Stockholm / SLU Uppsala
Speciation and bioavailability of trace metals and phosphorus in soil systems [Abstract]
02.06.2016Dr. Christine M. Klapeer
Entwicklungssoziologie, Universität Bayreuth
Ist Natur politisch? Zum Zusammenhang von Naturkonzeptionen, Geschlechterverhältnissen und kolonialer Gewalt [Abstract]
09.06.2016Dr. Julian Klaus
Catchment and Eco-Hydrology Research Group, Luxembourg Institute of Science and Technology
Stable Isotopes in Hydrology: Progress in concepts and process understanding [Abstract]
16.06.2016Freek T. Bakker (PhD)
Biosystematics Group, Wageningen University, NL
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22.06.2016

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13:00-14:00
23.06.2016
PD Dr. Karsten Wesche
Dept. of Botany, Senckenberg Museum of Natural History Görlitz
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Geomorphology and Environmental Systems, University of Salzburg, AT
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Soil Biogeochemistry, Soil Ecology, BayCEER, University of Bayreuth
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