Precipitation manipulation experiments – challenges and recommendations for the future

Publication: Research - peer-reviewJournal article – Annual report year: 2012

  • Author: Beier, Claus

    Ecosystems Programme, Department of Chemical and Biochemical Engineering, Technical University of Denmark

  • Author: Beierkuhnlein, Carl

    University of Bayreuth, Germany

  • Author: Wohlgemuth, Thomas

    Forrest Dynamics, Swiss Federal Institute for Forest Snow and Landscape Research WSL , Switzerland

  • Author: Penuelas, Josep

    Department Global Ecology, CREAF‐CSIC Barcelona, Spain

  • Author: Emmett, Bridget

    Centre for Ecology and Hydrology, United Kingdom

  • Author: Körner, Christian

    Institute of Botany, University of Basel, Switzerland

  • Author: Boeck, Hans, de

    University of Antwerp, Belgium

  • Author: Christensen, Jens Hesselbjerg

    Danish Meteorological Institute

  • Author: Leuzinger, Sebastian

    Swiss Federal Institute of Technology Zurich, Switzerland

  • Author: Janssens, Ivan A.

    University of Antwerp, Belgium

  • Author: Hansen, Karin

    Swedish Environmental Research Institute, Sweden

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Climatic changes, including altered precipitation regimes, will affect key ecosystem processes, such as plant productivity and biodiversity for many terrestrial ecosystems. Past and ongoing precipitation experiments have been conducted to quantify these potential changes. An analysis of these experiments indicates that they have provided important information on how water regulates ecosystem processes. However, they do not adequately represent global biomes nor forecasted precipitation scenarios and their potential contribution to advance our understanding of ecosystem responses to precipitation changes is therefore limited, as is their potential value for the development and testing of ecosystem models. This highlights the need for new precipitation experiments in biomes and ambient climatic conditions hitherto poorly studied applying relevant complex scenarios including changes in precipitation frequency and amplitude, seasonality, extremity and interactions with other global change drivers. A systematic and holistic approach to investigate how soil and plant community characteristics change with altered precipitation regimes and the consequent effects on ecosystem processes and functioning within these experiments will greatly increase their value to the climate change and ecosystem research communities. Experiments should specifically test how changes in precipitation leading to exceedance of biological thresholds affect ecosystem resilience and acclimation.
Original languageEnglish
JournalEcology Letters
Publication date2012
Volume15
Issue8
Pages899-911
ISSN1461-023X
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 46

Keywords

  • Climate change, Experimental design, Manipulative experiments, Precipitation change, Precipitation patterns, Precipitation scenarios
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