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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.date.accessioned2018-12-19T09:01:35Z
dc.date.available2018-12-19T09:01:35Z
dc.date.issued2018-12-17
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 <i>Salix polaris</i> and the graminoid <i>Luzula confusa</i>, 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 <i>S. polaris</i>, compared to the pre-frost situation. Wilting shoot tips of <i>S. polaris</i> increased nearly tenfold, while the proportion of wilted leaves of <i>L. confusa</i> increased by 15%. During recovery, damaged plants of <i>S. polaris</i> responded by extensive compensatory growth of new leaves that were much smaller than leaves of non-damaged shoots. The results suggest that <i>S. polaris</i> and <i>L. confusa</i> 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.en_US
dc.description.sponsorshipEEANorway Grants FRAM–High North Research Centre for Climate and the Environmenten_US
dc.descriptionSource at <a href=http://www.borenv.net/BER/ber231-6.htm> http://www.borenv.net/BER/ber231-6.htm</a>.en_US
dc.identifier.citationBjerke, J.W., Elverland, E., Jaakola, L., Lund, l., Zagajewski, B., Bochenek, Z., ... Tømmervik, H. (2018). High tolerance of a high-arctic willow and graminoid to simulated ice encasement. <i>Boreal environment research</i>, 23.en_US
dc.identifier.issn1239-6095
dc.identifier.issn1797-2469
dc.identifier.otherFRIDAID 1644963
dc.identifier.urihttps://hdl.handle.net/10037/14367
dc.language.isoengen_US
dc.publisherBoreal Environment Research Publishing Boarden_US
dc.relation.journalBoreal environment research
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/KLIMAFORSK/225006/Norway/Winter disturbance and nitrogen deposition: Unraveling the mechanisms behind ecosystem response to combined effects of climate and pollution//en_US
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480en_US
dc.subjectVDP::Mathematics and natural scienses: 400::Zoology and botany: 480en_US
dc.titleHigh tolerance of a high-arctic willow and graminoid to simulated ice encasementen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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