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Simulating the future : responses of ecosystems, key species and European provenances to expected climatic trends and events

Title data

Jentsch, Anke ; Beierkuhnlein, Carl:
Simulating the future : responses of ecosystems, key species and European provenances to expected climatic trends and events.
In: Endlicher, Wilfried (Hrsg.): Continents under climate change. - Stuttgart , 2010 . - pp. 89-98 . - (Nova Acta Leopoldina ; 112 )
ISBN 978-3-8047-2795-3

Abstract in another language

Future climate chane ist expected to rapidly modify the long-term average and variation in temperature and precipitation regimes. The local climate that has been experienced by organisms and ecosystems does no longer exist. More frequent and more pronounced extreme weather conditions are expected in the near future. Monitoring both future climate and the ecological responses will be important. However, monitoring can not supply the necessary insights for the design of adaptation strategies in time. Ecological modeling is heuristically limited due to the simple fact of hitherto not available evaluation and adjustment of results. Thus, the experimental sumulation of climatic trends and events is urgently needed in order to identify responses of important communities and species that are exposed to anovel climate. Experimental appraches are artificial to some degree, but they can yield fundamental insights into crucial mechanisms of reponse to rapid climate change. In the ENENT experiments (EVENT I to V), we simulate expected future climatic conditions including extreme weather events along a gradient ranging from highly standarized and replicated pot experiments over manipulation of strongly controlled artificial plant communities (with defined number of specimen and with standarized substrate) to manipulation of semi-natural established grassland communities on old-grown soils. We are testing the effects of summer warming, winter warming, increased winter precipitation, recurrent extreme summer drought, excessive summer rain, and modified frost-thaw-cycles. In addition, we are combining different drivers in multi-factor experiments (e.g. land use intensity and warming or more extreme precipitation regimes.) The main focus of the EVENT-experiments in on grasslands, but also shrubland (heath) on the community level and important tree species on the within-species diversity level are experimentally exposed to future climatic scenarios. The role of biodiversity - in terms of species richness and richness of various growth forms and functional groups - for the buffering of extreme wather events is of special interst for us. Surprise occur! Total biomass did not respond as strongly as expected, but single species performance was very specific. For particular specie, significant effects of drought, heavy rain and increased freeze-thaw cycles were found in parameters related to e.g. nutrient cycling, gas exchange, phenology and reproductive fitness. Biodiversity did both, buffer extremes in some cases and accelerate stress in other cases.

Further data

Item Type: Article in a book
Refereed: Yes
Additional notes: BAYCEER82966
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Biogeography
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Biogeography > Chair Biogeography - Univ.-Prof. Dr. Carl Beierkuhnlein
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Professorship Disturbance Ecology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Professorship Disturbance Ecology > Professorship Disturbance Ecology - Univ.-Prof. Dr. Anke Jentsch
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 05 Jun 2015 06:18
Last Modified: 05 Jun 2015 06:18
URI: https://eref.uni-bayreuth.de/id/eprint/14668