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Linking root traits and plant-soil feedbacks to environmental change in the sub-arctic tundra

Spitzer, Clydecia (2021). Linking root traits and plant-soil feedbacks to environmental change in the sub-arctic tundra. Diss. (sammanfattning/summary) Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880
ISBN 978-91-7760-742-7
eISBN 978-91-7760-743-4
[Doctoral thesis]

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Abstract

Plant community assembly processes shape the composition and abundances of species, and encompass functional traits and resource acquisition strategy of species, biotic interactions and abiotic filtering. Hence, an understanding of these complex processes requires disentangling the effects of multiple factors influencing plant community assembly. In this thesis, I investigated fine root trait associations with soil microorganisms, the resulting feedback effects from those interactions (i.e., plant-soil feedbacks), plant-plant interactions under warming, and the effects of temperature on fine root traits of plant communities in the Swedish sub-arctic tundra.
Here, the chemical root economics spectrum (i.e., tradeoff between acquisitive and conservative strategies) predicted the abundance of broad microbial groups, whereas individual fine root traits were associated with the relative abundances of fungal taxa. It also explained plant-soil feedback, with acquisitive trait values resulting in negative feedbacks. In addition, plant-plant interactions were altered under warming, but this was not related to resource-acquisition strategy. Further, community-level root trait responses to temperature were not necessarily related to root resource investment strategy.
Taken together, this thesis shows the importance of fine root traits for understanding plant community responses to global change. This has implications for plant community assembly, as well as carbon and nutrient cycling in a future warmer sub-arctic tundra.

Authors/Creators:Spitzer, Clydecia
Title:Linking root traits and plant-soil feedbacks to environmental change in the sub-arctic tundra
Series Name/Journal:Acta Universitatis Agriculturae Sueciae
Year of publishing :2021
Number:2021:32
Number of Pages:70
Publisher:Department of Forest Ecology and Management, Swedish University of Agricultural Sciences
ISBN for printed version:978-91-7760-742-7
ISBN for electronic version:978-91-7760-743-4
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Article category:Other scientific
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Soil Science
Keywords:arctic, fine root traits, fungi, plant-soil feedback, plant-plant interactions, rhizosphere, root economics spectrum, trait variation, tundra
URN:NBN:urn:nbn:se:slu:epsilon-p-111727
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-111727
ID Code:23417
Faculty:S - Faculty of Forest Sciences
Department:(S) > Dept. of Forest Ecology and Management
Deposited By: SLUpub Connector
Deposited On:05 May 2021 07:03
Metadata Last Modified:06 May 2021 11:44

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