Mammalian herbivory shapes intraspecific trait responses to warmer climate and nutrient enrichment

Show full item record



Permalink

http://hdl.handle.net/10138/326714

Citation

Jessen , M-T , Kaarlejärvi , E , Olofsson , J & Eskelinen , A 2020 , ' Mammalian herbivory shapes intraspecific trait responses to warmer climate and nutrient enrichment ' , Global Change Biology , vol. 26 , no. 12 , pp. 6742-6752 . https://doi.org/10.1111/gcb.15378

Title: Mammalian herbivory shapes intraspecific trait responses to warmer climate and nutrient enrichment
Author: Jessen, Maria-Theresa; Kaarlejärvi, Elina; Olofsson, Johan; Eskelinen, Anu
Contributor organization: Organismal and Evolutionary Biology Research Programme
Research Centre for Ecological Change
Date: 2020-12
Language: eng
Number of pages: 11
Belongs to series: Global Change Biology
ISSN: 1354-1013
DOI: https://doi.org/10.1111/gcb.15378
URI: http://hdl.handle.net/10138/326714
Abstract: Variation in intraspecific traits is one important mechanism that can allow plant species to respond to global changes. Understanding plant trait responses to environmental changes such as grazing patterns, nutrient enrichment and climate warming is, thus, essential for predicting the composition of future plant communities. We measured traits of eight common tundra species in a fully factorial field experiment with mammalian herbivore exclusion, fertilization, and passive warming, and assessed how trait responsiveness to the treatments was associated with abundance changes in those treatments. Herbivory exhibited the strongest impact on traits. Exclusion of herbivores increased vegetative plant height by 50% and specific leaf area (SLA) by 19%, and decreased foliar C:N by 11%; fertilization and warming also increased height and SLA but to a smaller extent. Herbivory also modulated intraspecific height, SLA and foliar C:N responses to fertilization and warming, and these interactions were species-specific. Furthermore, herbivory affected how trait change translated into relative abundance change: increased height under warming and fertilization was more positively related to abundance change inside fences than in grazed plots. Our findings highlight the key role of mammalian herbivory when assessing intraspecific trait change in tundra and its consequences for plant performance under global changes.
Subject: anthropogenic change
climate warming
grazing
herbivory
intraspecific trait plasticity
nutrient addition
open-top chamber
plant performance
reindeer
trait-environment relationship
PLANT FUNCTIONAL TRAITS
PHENOTYPIC PLASTICITY
COMMUNITY RESPONSES
SPECIES RICHNESS
GLOBAL CHANGE
LEAF TRAITS
NITROGEN
TUNDRA
VEGETATION
TOLERANCE
1181 Ecology, evolutionary biology
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion


Files in this item

Total number of downloads: Loading...

Files Size Format View
gcb.15378.pdf 726.2Kb PDF View/Open

This item appears in the following Collection(s)

Show full item record