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dc.contributor.authorPetit Bon, Matteo
dc.contributor.authorInga, Katarina Gunnarsdotter
dc.contributor.authorJónsdóttir, Ingibjörg Svala
dc.contributor.authorUtsi, Tove Aagnes
dc.contributor.authorSoininen, Eeva Marjatta
dc.contributor.authorBråthen, Kari Anne
dc.date.accessioned2020-08-19T08:55:29Z
dc.date.available2020-08-19T08:55:29Z
dc.date.issued2020-04-27
dc.description.abstractIn the long‐term, herbivores can alter nutrient dynamics in terrestrial ecosystems by changing the functional composition of plant communities. Here, we ask to what extent herbivores can affect plant‐community nutrient dynamics in the short‐term. We provide theoretical expectations for immediate effects of herbivores on tundra‐grassland plant‐community nutrient levels throughout a single growing season and empirically evaluate these predictions. We established an experiment within two forb‐dominated and two grass‐dominated tundra‐grassland communities. We selected tundra‐patches disturbed by small rodents during the previous winter, and neighbouring undisturbed tundra‐patches. Within each tundra‐patch, we set up a reindeer‐open and a reindeer‐exclusion plot. Throughout the summer, we randomly collected over 2800 leaf samples from 34 vascular plant species/genera and analysed their nitrogen and phosphorus contents. Plant‐community nutrient levels were consistently higher in tundra‐patches affected by small rodents, both across tundra‐grassland types and throughout the growing season. Forbs and grasses growing in small‐rodent disturbed tundra‐patches had 11% and 25% higher nutrient content, respectively, compared to undisturbed tundra‐patches. Reindeer affected only grasses growing in grass‐dominated tundra‐grasslands and the outcome was dependent on small‐rodent winter disturbance. Reindeer increased grass nitrogen content in undisturbed tundra‐patches (+7%) and weakened the positive effects of small rodents in disturbed tundra‐patches (from 25% to 15% higher nutrient content [both nitrogen and phosphorus]). By enhancing plant nutrient levels throughout a single growing season, herbivores were key, immediate modifiers of plant‐community nutrient dynamics in tundra‐grasslands. Higher nutrient contents still detected in senescent leaves at the end of the summer in herbivore‐affected tundra suggest that herbivory is accelerating short‐term tundra‐grassland nutrient cycling rates. Our findings from tundra‐grassland communities align with theoretical expectations of positive herbivore effects on nutrient cycling in relatively productive ecosystems.en_US
dc.identifier.citationPetit Bon M, Inga KG, Jónsdóttir I, Utsi TA, Soininen EM, Bråthen KA. Interactions between winter and summer herbivory affect spatial and temporal plant nutrient dynamics in tundra grassland communities. Oikos. 2020;00:1-14en_US
dc.identifier.cristinIDFRIDAID 1816342
dc.identifier.doi10.1111/oik.07074
dc.identifier.issn0030-1299
dc.identifier.issn1600-0706
dc.identifier.urihttps://hdl.handle.net/10037/19040
dc.language.isoengen_US
dc.publisherWileyen_US
dc.relation.isbasedonPetit Bon, M., Inga, K.G., Jónsdóttir, I.S., Utsi, T.A., Soininen, E.M. & Bråthen, K.A. (2020). Replication data for: Interactions between winter and summer herbivory affect spatial and temporal plant nutrient dynamics in tundra grassland communities. <a href=https://doi.org/10.18710/XCEXJ1>https://doi.org/10.18710/XCEXJ1</a>, DataverseNO, V1
dc.relation.ispartofPetit Bon, M. (2020). Short-term tundra plant-community nutrient responses to herbivory and warming: New insights from Near infrared-reflectance spectroscopy methodology. (Doctoral thesis). <a href=https://hdl.handle.net/10037/19213>https://hdl.handle.net/10037/19213</a>
dc.relation.journalOikos
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2020 The Author(s)en_US
dc.subjectVDP::Mathematics and natural science: 400en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400en_US
dc.titleInteractions between winter and summer herbivory affect spatial and temporal plant nutrient dynamics in tundra grassland communitiesen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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