Title
**Zea mays** rhizosphere respiration, but not soil organic matter decomposition was stable across a temperature gradient **Zea mays** rhizosphere respiration, but not soil organic matter decomposition was stable across a temperature gradient
Author
Faculty/Department
Faculty of Sciences. Biology
Publication type
article
Publication
Oxford ,
Subject
Biology
Source (journal)
Soil biology and biochemistry. - Oxford
Volume/pages
42(2010) :11 , p. 2030-2033
ISSN
0038-0717
ISI
000283472600017
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
In a greenhouse experiment, we grew maize plants at different densities. We added fertilizer to half of the pots and created a temperature gradient. After 10 weeks of plant growth, we measured soil CO2 efflux (SCE) and determined rhizosphere respiration (Rrhizo) and the decomposition rate of soil organic matter (RSOM) using the different δ13C of the C3 soil and C4 plants. Whereas Rrhizo remained stable across the temperature gradient, RSOM significantly increased with growth temperature. Neither plant density, nor the fertilizer treatment affected the relation between Rrhizo or RSOM and growth temperature. Although Rrhizo might still increase with temperature in the short term, long term exposure to higher temperatures revealed full thermal acclimation of Rrhizo, but not of RSOM.
E-info
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Full text (open access)
https://repository.uantwerpen.be/docman/irua/765f54/84114.pdf
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