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dc.contributor.authorSandvik, Sylvi M.
dc.contributor.authorHeegaard, Einar
dc.date.accessioned2008-09-05T10:59:16Z
dc.date.issued2003
dc.identifier.citationArctic, antarctic and alpine research 35 (3): 341-348. Copyright, Regents of the University of Coloradoen
dc.identifier.issn1523-0430
dc.identifier.urihttp://hdl.handle.net/11250/138223
dc.description.abstractIn a factorial field experiment we increased the temperature (OpenTop Chambers) and nutrients (nitrogen, phosphorus, and potassium[NPK]) to simulate predicted future climate changes and studiedthe growth response of the acrocarpous bryophyte Pohliawahlenbergii (Bryaceae) in a wet snowbed environment. The speciesshows a positive growth-length response to added nutrients andincreased temperature. The stronger response to nutrientsindicates a strong limitation of nutrients in the snowbedenvironment. There was an immediate response to nutrienttreatment, whereas the temperature response was delayed. Thegrowth response shows a clear interaction between temperature andnutrients. The immediate positive growth response is interpretedas a function of the wet habitat, since water makes the addednutrients immediately available to the plants. The growth formchanged toward a more lax (loose) and desiccation-intolerant formwith added nutrients. In a climate change scenario based on theseresults we hypothesize that bryophyte response will depend on thewater availability from precipitation and from meltwater. In adrier environment we predict that bryophytes will become moreconstrained toward areas with a high continuity of meltwater,whereas increased precipitation may compensate for any changes ingrowth form, which would be positive for bryophytes.en
dc.format.extent224882 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoengen
dc.publisherThe Institute of Arctic and Alpine Researchen
dc.titleEffects of simulated environmental changes on growth and growth form in a late snowbed population of pohlia wahlenbergii (Web. et Mohr) Andren
dc.typeJournal articleen
dc.typePeer revieweden
dc.subject.nsiVDP::Mathematics and natural science: 400::Zoology and botany: 480::Plant physiology: 492en
dc.subject.nsiVDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488en
dc.source.pagenumber341-248en
dc.source.volume35en
dc.source.journalArctic, antarctic and alpine researchen
dc.source.issue3en


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