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Parts, Kaarin ; Tedersoo, Leho ; Schindlbacher, Andreas ; Sigurdsson, Bjarni D. ; Leblans, Niki I. W. ; Oddsdóttir, Edda S. ; Borken, Werner ; Ostonen, Ivika:
Acclimation of fine roots systems to soil warming : Comparison of an experimental setup and a natural soil temperature gradient.
In: Ecosystems.
Bd. 22
(2019)
.
- S. 457-472.
ISSN 1435-0629
DOI: https://doi.org/10.1007/s10021-018-0280-y
Abstract
Global warming is predicted to impact high-latitude and high-altitude forests severely, jeopardizing their overall functioning and carbon storage, both of which depend on the warming response of tree fine root systems. This paper investigates the effect of soil warming on the biomass, morphology and colonizingectomycorrhizal community of spruce fine and absorptive fine roots. We compare the responses ofspruce roots growing at a man-made long-term soil warming (+ 4°C) experiment to results obtainedfrom a geothermal soil temperature gradient (+ 1 to + 14°C) extending to the forest die-off edge, to shedlight on the generalizability of the warming response and reveal any thresholds in acclimation ability.Trees in warmer soils formed longer and less-branched absorptive roots with higher specific root length and area, and lower root tissue density in both spruce stands, irrespective of warming methodand location. Soil warming at the experimental warming site also supported the occurrence of amore varied EcM community and an increase in the abundance of Tomentella spp., indicating a shift in nutrient foraging. Fine and absorptive fine root biomass decreased toward warmer soil, with a sharp reduction occurring between + 4 and + 6°C from the ambient and leading to the collapse of the fineroot system at the geothermal gradient. At the experimental warming site, the applied + 4°Cwarming had no effect on fine and absorptive fine root biomass. The similar fine root responses at thetwo warming sites suggest that the observations possibly reflect general acclimation patterns inspruce forests to global warming.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Institutionen der Universität: | Forschungseinrichtungen Forschungseinrichtungen > Zentrale wissenschaftliche Einrichtungen Forschungseinrichtungen > Zentrale wissenschaftliche Einrichtungen > Bayreuther Zentrum für Ökologie und Umweltforschung - BayCEER Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften > Lehrstuhl Bodenökologie Fakultäten Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik |
| Eingestellt am: | 29 Jan 2020 13:25 |
| Letzte Änderung: | 29 Jan 2020 13:25 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/53878 |