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dc.contributor.authorLindén, Elin
dc.contributor.authorte Beest, Mariska
dc.contributor.authorAubreu, Ilka
dc.contributor.authorMoritz, Thomas
dc.contributor.authorSundqvist, Maja K.
dc.contributor.authorBarrio, Isabel C.
dc.contributor.authorBoike, Julia
dc.contributor.authorBryant, John P.
dc.contributor.authorBråthen, Kari Anne
dc.contributor.authorBuchwal, Agata
dc.contributor.authorBueno, C. Guillermo
dc.contributor.authorCurrier, Alain
dc.contributor.authorEgelkraut, Dagmar Dorothea
dc.contributor.authorForbes, Bruce C.
dc.contributor.authorHallinger, Martin
dc.contributor.authorHeijmans, Monique
dc.contributor.authorHermanutz, Luise
dc.contributor.authorHik, David S.
dc.contributor.authorHofgaard, Annika
dc.contributor.authorHolmgren, Milena
dc.contributor.authorHuebner, Diane C.
dc.contributor.authorHøye, Toke T.
dc.contributor.authorJónsdóttir, Ingibjörg S.
dc.contributor.authorKaarlejärvi, Elina
dc.contributor.authorKissler, Emilie
dc.contributor.authorKumpula, Timo
dc.contributor.authorLimpens, Juul
dc.contributor.authorMyers-Smith, Isla H.
dc.contributor.authorNormand, Signe
dc.contributor.authorPost, Eric
dc.contributor.authorRocha, Adrian V.
dc.contributor.authorSchmidt, Niels Martin
dc.contributor.authorSkarin, Anna
dc.contributor.authorSoininen, Eeva M
dc.contributor.authorSokolov, Aleksandr
dc.contributor.authorSokolova, Natalia
dc.contributor.authorSpeed, James David Mervyn
dc.contributor.authorStreet, Lorna E.
dc.contributor.authorTananaev, Nikita
dc.contributor.authorTremblay, Jean-Pierre
dc.contributor.authorUrbanowicz, Christine
dc.contributor.authorWatts, David A.
dc.contributor.authorZimmermann, Heike H.
dc.contributor.authorOlofsson, Johan
dc.date.accessioned2022-09-06T10:09:25Z
dc.date.available2022-09-06T10:09:25Z
dc.date.issued2022-08-30
dc.description.abstractSpatial variation in plant chemical defence towards herbivores can help us understand variation in herbivore top–down control of shrubs in the Arctic and possibly also shrub responses to global warming. Less defended, non-resinous shrubs could be more influenced by herbivores than more defended, resinous shrubs. However, sparse field measurements limit our current understanding of how much of the circum-Arctic variation in defence compounds is explained by taxa or defence functional groups (resinous/non-resinous). We measured circum-Arctic chemical defence and leaf digestibility in resinous (Betula glandulosa, B. nana ssp. exilis) and non-resinous (B. nana ssp. nana, B. pumila) shrub birches to see how they vary among and within taxa and functional groups. Using liquid chromatography–mass spectrometry (LC–MS) metabolomic analyses and in vitro leaf digestibility via incubation in cattle rumen fluid, we analysed defence composition and leaf digestibility in 128 samples from 44 tundra locations. We found biogeographical patterns in anti-herbivore defence where mean leaf triterpene concentrations and twig resin gland density were greater in resinous taxa and mean concentrations of condensing tannins were greater in non-resinous taxa. This indicates a biome-wide trade-off between triterpene- or tannin-dominated defences. However, we also found variations in chemical defence composition and resin gland density both within and among functional groups (resinous/non-resinous) and taxa, suggesting these categorisations only partly predict chemical herbivore defence. Complex tannins were the only defence compounds negatively related to in vitro digestibility, identifying this previously neglected tannin group as having a potential key role in birch anti-herbivore defence. We conclude that circum-Arctic variation in birch anti-herbivore defence can be partly derived from biogeographical distributions of birch taxa, although our detailed mapping of plant defence provides more information on this variation and can be used for better predictions of herbivore effects on Arctic vegetation.en_US
dc.identifier.citationLindén E, te Beest M, Aubreu, Moritz T, Sundqvist MK, Barrio IC, Boike J, Bryant JP, Bråthen KA, Buchwal A, Bueno CG, Currier, Egelkraut DD, Forbes BC, Hallinger M, Heijmans M, Hermanutz L, Hik DS, Hofgaard A, Holmgren M, Huebner DC, Høye TT, Jónsdóttir IS, Kaarlejärvi E, Kissler, Kumpula T, Limpens J, Myers-Smith IH, Normand S, Post E, Rocha AV, Schmidt NM, Skarin A, Soininen EM, Sokolov A, Sokolova N, Speed JDM, Street LE, Tananaev N, Tremblay J, Urbanowicz C, Watts, Zimmermann HH, Olofsson J. Circum-Arctic distribution of chemical anti-herbivore compounds suggests biome-wide trade-off in defence strategies in Arctic shrubs. Ecography. 2022en_US
dc.identifier.cristinIDFRIDAID 2047461
dc.identifier.doi10.1111/ecog.06166
dc.identifier.issn0906-7590
dc.identifier.issn1600-0587
dc.identifier.urihttps://hdl.handle.net/10037/26653
dc.language.isoengen_US
dc.publisherWileyen_US
dc.relation.journalEcography
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2022 The Author(s)en_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.titleCircum-Arctic distribution of chemical anti-herbivore compounds suggests biome-wide trade-off in defence strategies in Arctic shrubsen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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