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  How do variations in the temporal distribution of rainfall events affect ecosystem fluxes in seasonally water-limited Northern Hemisphere shrublands and forests

Ross, I., Misson, L., Rambal, S., Arneth, A., Scott, R. L., Carrara, A., et al. (2012). How do variations in the temporal distribution of rainfall events affect ecosystem fluxes in seasonally water-limited Northern Hemisphere shrublands and forests. Biogeosciences, 9, 1007-1024. doi:10.5194/bg-9-1007-2012.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0014-760F-7 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0024-4B25-8
Genre: Journal Article

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http://dx.doi.org/10.5194/bg-9-1007-2012 (Publisher version)
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 Creators:
Ross, I.1, Author
Misson, L., Author
Rambal, S., Author
Arneth, A., Author
Scott, R. L., Author
Carrara, A., Author
Cescatti, A., Author
Genesio, L., Author
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1External Organizations, ou_persistent22              

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 Abstract: Rainfall regimes became more extreme over the course of the 20th century, characterised by fewer and larger rainfall events. Such changes are expected to continue throughout the current century. The effect of changes in the temporal distribution of rainfall on ecosystem carbon fluxes is poorly understood, with most available information coming from experimental studies of grassland ecosystems. Here, continuous measurements of ecosystem carbon fluxes and precipitation from the worldwide FLUXNET network of eddy-covariance sites are exploited to investigate the effects of differences in rainfall distribution on the carbon balance of seasonally water-limited shrubland and forest sites. Once the strong dependence of ecosystem fluxes on total annual rainfall amount is accounted for, results show that sites with rainfall distributions characterised by fewer and larger rainfall events have significantly lower gross primary productivity, slightly lower ecosystem respiration and consequently a smaller net ecosystem productivity.

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 Dates: 2012
 Publication Status: Issued
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 Identifiers: Other: BPR038
DOI: 10.5194/bg-9-1007-2012
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Title: Biogeosciences
  Other : Biogeosciences
Source Genre: Journal
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Publ. Info: Katlenburg-Lindau, Germany : Copernicus GmbH on behalf of the European Geosciences Union
Pages: - Volume / Issue: 9 Sequence Number: - Start / End Page: 1007 - 1024 Identifier: ISSN: 1726-4170
CoNE: https://pure.mpg.de/cone/journals/resource/111087929276006