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Differential effects of oxidised and reduced nitrogen on vegetation and soil chemistry of species-rich acidic grasslands

hal.structure.identifierResearch Institute
dc.contributor.authorDORLAND, Edu
hal.structure.identifierLancaster Environment Centre
dc.contributor.authorSTEVENS, Carly J.
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorGAUDNIK, Cassandre
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorCORCKET, Emmanuel
hal.structure.identifierNature Conservation and Plant Ecology Group
dc.contributor.authorROTTHIER, Suzanne
hal.structure.identifierOpen University
dc.contributor.authorWOTHERSPOON, Katherine
hal.structure.identifierUniversity of Bergen [UiB]
dc.contributor.authorJOKERUD, Mari
hal.structure.identifierUniversity of Bergen [UiB]
dc.contributor.authorVANDVIK, Vigdis
hal.structure.identifierUniversiteit Utrecht / Utrecht University [Utrecht]
dc.contributor.authorSOONS, Merel B.
hal.structure.identifierUniversiteit Utrecht / Utrecht University [Utrecht]
dc.contributor.authorHEFTING, Mariet M.
hal.structure.identifierNorwegian Institute for Nature Research [NINA]
dc.contributor.authorAARRESTAD, Per Arild
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorALARD, Didier
hal.structure.identifierUniversity of Bremen
dc.contributor.authorDIEKMANN, Martin
hal.structure.identifierUniversity of Bremen
dc.contributor.authorDUPRE, Cecilia
hal.structure.identifierSchool of Science and the Environment
dc.contributor.authorDISE, Nancy B.
hal.structure.identifierOpen University
dc.contributor.authorGOWING, David J. G.
hal.structure.identifierRadboud University [Nijmegen]
dc.contributor.authorBOBBINK, Roland
dc.date.issued2013
dc.identifier.issn0049-6979
dc.description.abstractEnEmissions and deposition of ammonia and nitrogen oxides have strongly increased since the 1950s. This has led to significant changes in the nitrogen (N) cycle, vegetation composition and plant diversity in many ecosystems of high conservation value in Europe. As a consequence of different regional pollution levels and of the increased importance of reduced N in the near future, determining the effect of different forms of N is an important task for understanding the consequences of atmospheric N inputs. We have initiated three replicated N addition experiments in species-rich, acidic grasslands spanning a climatic gradient in the Atlantic biogeographic region of Europe in Norway, Wales and France at sites with low levels of pollution. N was added in two doses (0 and 70 kg N ha−1 year−1 above background) and in three forms (oxidised N, reduced N and a 50–50 combination). After 2.5 years of N additions, the effects of these treatments on plant biomass, plant nutritional status, soil pH and soil nutrient availability were determined. Impacts of the N additions were observed within the 2.5-year research period. In some cases, the first signs of differential effects of N form could also be demonstrated. In the French site, for example, grass biomass was significantly increased by the oxidised N treatments but decreased by the reduced N treatments. In the Norwegian site, the reduced N treatments significantly reduced soil pH, whereas oxidised N did not. Effects on nutrient availability were also observed. These experiments will be continued to elucidate the longer term impacts of N deposition on these grasslands.
dc.language.isoen
dc.publisherSpringer Verlag
dc.subjectnitrogen deposition
dc.subject.eneuropean acidic grasslands
dc.subject.ennitrogen supply rate
dc.subject.enoxidised nitrogen
dc.subject.enreduced nitrogen
dc.subject.enspecies richness
dc.title.enDifferential effects of oxidised and reduced nitrogen on vegetation and soil chemistry of species-rich acidic grasslands
dc.typeArticle de revue
dc.identifier.doi10.1007/s11270-013-1664-4
dc.subject.halSciences du Vivant [q-bio]
bordeaux.journalWater, Air, and Soil Pollution
bordeaux.page13 p.
bordeaux.volume224
bordeaux.issue9
bordeaux.peerReviewedoui
hal.identifierhal-02643840
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02643840v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Water,%20Air,%20and%20Soil%20Pollution&rft.date=2013&rft.volume=224&rft.issue=9&rft.spage=13%20p.&rft.epage=13%20p.&rft.eissn=0049-6979&rft.issn=0049-6979&rft.au=DORLAND,%20Edu&STEVENS,%20Carly%20J.&GAUDNIK,%20Cassandre&CORCKET,%20Emmanuel&ROTTHIER,%20Suzanne&rft.genre=article


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