Temperature and sediment properties drive spatiotemporal variability of methane ebullition in a small and shallow temperate lake
Temperature and sediment properties drive spatiotemporal variability of methane ebullition in a small and shallow temperate lake
复制标题
温度和沉积物特性驱动小型浅温带湖泊甲烷沸腾的时空变化
DOI:
10.1002/lno.11775
复制
发表时间:
2021
影响因子:
4.5
通讯作者:
Schmiedeskamp
中科院分区:
文献类型:
--
作者:
Praetzel;Schmiedeskamp
Ebullition is a major pathway of methane (CH4) fluxes from lakes to the atmosphere. Small and shallow lakes can have high emissions but have only recently gained more attention. We studied the quantity and spatiotemporal variability of CH4ebullition from a small (1.4 ha) and shallow (max 1.5 m) temperate lake in Germany during 2017 and 2018. We found a high range of fluxes (0–872 mg m−2d−1) and > 90% of the fluxes were emitted between May and August. Fluxes in early spring and late autumn were below 4 mg m−2d−1. Also, on a spatial scale, fluxes varied distinctly and generally increased from the shore to the center of the lake. To identify drivers of observed emissions patterns, we measured temperature and air pressure, the quantity and quality of the sedimented organic matter (OM) as well as chemical and physical properties of the sediment. Generalized linear models identified temperature, sediment porosity and organic matter content as the best predictors for the observed spatiotemporal differences, whereas temperature was accountable for the observed temporal, and porosity and organic matter content for the spatial variability. We suggest that in small lakes, temperature could serve as master variable to predict site‐specific CH4ebullition while spatial within‐lake differences are determined by varying physical sediment properties more than quantity or quality of the OM.
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影响因子:
5.2
作者:
W. Wright;J. A. Ramirez;X. Comas
通讯作者:
X. Comas
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
Xi Chen;L. Slater
通讯作者:
L. Slater
影响因子:
4.2
作者:
C. Blodau
通讯作者:
C. Blodau
影响因子:
4.9
作者:
Broder, T.;Blodau, C.;Knorr, K. H.
通讯作者:
Knorr, K. H.
影响因子:
4.4
作者:
K. Zepp Falz;C. Holliger;R. Großkopf;W. Liesack;A. N. Nozhevnikova;B. Müller;B. Wehrli;D. Hahn
通讯作者:
K. Zepp Falz;C. Holliger;R. Großkopf;W. Liesack;A. N. Nozhevnikova;B. Müller;B. Wehrli;D. Hahn