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dc.contributor.authorBjerke, Jarle W.
dc.contributor.authorElverland, Ellen
dc.contributor.authorJaakola, Laura
dc.contributor.authorLund, Leidulf
dc.contributor.authorZagajewski, Bogdan
dc.contributor.authorBochenek, Zbigniew
dc.contributor.authorKłos, Andrzej
dc.contributor.authorTømmervik, Hans
dc.coverage.spatialArcticnb_NO
dc.date.accessioned2019-01-14T13:49:19Z
dc.date.available2019-01-14T13:49:19Z
dc.date.created2018-12-18T14:07:11Z
dc.date.issued2018
dc.identifier.issn1239-6095
dc.identifier.urihttp://hdl.handle.net/11250/2580534
dc.description.abstractClimate change-induced snow thaw and subsequent accumulation of ice on the ground is a potential, major threat to snow-dominated ecosystems. While impacts of ground-ice on arctic wildlife are well explored, the impacts on tundra vegetation is far from understood. We therefore tested the vulnerability of two high-arctic plants, the prostrate shrub Salix polaris and the graminoid Luzula confusa, to ice encasement for 60 days under full environmental control. Both species were tolerant, showing only minor negative responses to the treatment. Subsequent exposure to simulated late spring frost increased the amount of damaged tissue, particularly in S. polaris, compared to the pre-frost situation. Wilting shoot tips of S. polaris increased nearly tenfold, while the proportion of wilted leaves of L. confusa increased by 15%. During recovery, damaged plants of S. polaris responded by extensive compensatory growth of new leaves that were much smaller than leaves of non-damaged shoots. The results suggest that S. polaris and L. confusa are rather tolerant to arctic winter-spring climate change, and this may be part of the reason for their wide distribution range and abundance in the Arctic.nb_NO
dc.description.abstractHigh tolerance of a high-arctic willow and graminoid to simulated ice encasementnb_NO
dc.language.isoengnb_NO
dc.titleHigh tolerance of a high-arctic willow and graminoid to simulated ice encasementnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.rights.holder© BorealEnvResBoardnb_NO
dc.subject.nsiVDP::Zoologiske og botaniske fag: 480nb_NO
dc.subject.nsiVDP::Zoology and botany: 480nb_NO
dc.source.pagenumber329-338nb_NO
dc.source.journalBoreal environment researchnb_NO
dc.identifier.cristin1644963
dc.relation.projectNorges forskningsråd: 225006nb_NO
dc.relation.projectFramsenteret: 362222nb_NO
dc.relation.projectAndre: Polish-Norwegian Programme of the EEA Norway Grants: 198571nb_NO
cristin.unitcode7511,4,0,0
cristin.unitnameTromsø
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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