Title
Does the stress tolerance of mixed grassland communities change in a future climate? A test with heavy metal stress (zinc pollution)Does the stress tolerance of mixed grassland communities change in a future climate? A test with heavy metal stress (zinc pollution)
Author
Faculty/Department
Faculty of Sciences. Biology
Research group
Plant and Vegetation Ecology (PLECO)
Publication type
article
Publication
London,
Subject
Biology
Source (journal)
Environmental pollution. - London
Volume/pages
159(2011):12, p. 3294-3301
ISSN
0269-7491
ISI
000296397300003
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Will species that are sensitive/tolerant to Zn pollution still have the same sensitivity/tolerance in a future climate? To answer this question we analysed the response of constructed grassland communities to five levels of zinc (Zn) supply, ranging from 0 to 354 mg Zn kg−1 dry soil, under a current climate and a future climate (elevated CO2 and warming). Zn concentrations increased in roots and shoots with Zn addition but this increase did not differ between climates. Light-saturated net CO2 assimilation rate (Asat) of the species, on the other hand, responded differently to Zn addition depending on climate. Still, current and future climate communities have comparable biomass responses to Zn, i.e., no change in root biomass and a 13% decrease of above-ground biomass. Provided that the different response of Asat in a future climate will not compromise productivity and survival on the long term, sensitivity is not altered by climate change.
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Full text (open access)
https://repository.uantwerpen.be/docman/irua/579d2c/93285.pdf
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