Ethylene rather than dissolved organic carbon controls methane uptake in upland soils
Author(s)
Zhou, Xiaoqi
Dong, Haibo
Chen, Chengrong
Smaill, Simeon J
Clinton, Peter W
Griffith University Author(s)
Year published
2014
Metadata
Show full item recordAbstract
Sullivan et al. (2013) reported that there was a significantly positive relationship (P < 0.01, r2 = 0.58) between dissolved organic carbon (DOC) using salt extraction methods and potential methane oxidation rates in an arid region across a substrate age gradient. The authors observed that during the wet season rates of methane oxidation were higher, in opposition to trends in other ecosystems where increased soil moisture limits methane oxidation. Furthermore, DOC was more closely correlated with potential methane oxidation rates than other relevant parameters such as soil moisture content, pore space and texture. After ...
View more >Sullivan et al. (2013) reported that there was a significantly positive relationship (P < 0.01, r2 = 0.58) between dissolved organic carbon (DOC) using salt extraction methods and potential methane oxidation rates in an arid region across a substrate age gradient. The authors observed that during the wet season rates of methane oxidation were higher, in opposition to trends in other ecosystems where increased soil moisture limits methane oxidation. Furthermore, DOC was more closely correlated with potential methane oxidation rates than other relevant parameters such as soil moisture content, pore space and texture. After considering alternative options, the authors indicated that DOC may be an important regulator of methane oxidation rates in these arid soils. The authors indicated that this conclusion was supported by observations that incubation with 13C-glucose enriched the methaneoxidizing bacteria (MOB) biomarker 18:1x7c, suggesting that DOC was a facultative substrate for MOB, and also explaining the observed correlation.
View less >
View more >Sullivan et al. (2013) reported that there was a significantly positive relationship (P < 0.01, r2 = 0.58) between dissolved organic carbon (DOC) using salt extraction methods and potential methane oxidation rates in an arid region across a substrate age gradient. The authors observed that during the wet season rates of methane oxidation were higher, in opposition to trends in other ecosystems where increased soil moisture limits methane oxidation. Furthermore, DOC was more closely correlated with potential methane oxidation rates than other relevant parameters such as soil moisture content, pore space and texture. After considering alternative options, the authors indicated that DOC may be an important regulator of methane oxidation rates in these arid soils. The authors indicated that this conclusion was supported by observations that incubation with 13C-glucose enriched the methaneoxidizing bacteria (MOB) biomarker 18:1x7c, suggesting that DOC was a facultative substrate for MOB, and also explaining the observed correlation.
View less >
Journal Title
Global Change Biology
Volume
20
Issue
8
Subject
Environmental sciences
Soil biology
Biological sciences