High rates of daytime river metabolism are an underestimated component of carbon cycling
High rates of daytime river metabolism are an underestimated component of carbon cycling
复制标题
白天河流的高代谢率是碳循环的一个被低估的组成部分
DOI:
10.1038/s43247-022-00607-2
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发表时间:
2022
影响因子:
7.9
通讯作者:
Chandra, Sudeep
中科院分区:
文献类型:
--
作者:
Tromboni, Flavia;Hotchkiss, Erin R.;Schechner, Anne E.;Dodds, Walter K.;Poulson, Simon R.;Chandra, Sudeep
River metabolism and, thus, carbon cycling are governed by gross primary production and ecosystem respiration. Traditionally river metabolism is derived from diel dissolved oxygen concentrations, which cannot resolve diel changes in ecosystem respiration. Here, we compare river metabolism derived from oxygen concentrations with estimates from stable oxygen isotope signatures (δ18O2) from 14 sites in rivers across three biomes using Bayesian inverse modeling. We find isotopically derived ecosystem respiration was greater in the day than night for all rivers (maximum change of 113 g O2m−2d−1, minimum of 1 g O2m−2d−1). Temperature (20 °C) normalized rates of ecosystem respiration and gross primary production were 1.1 to 87 and 1.5 to 22-fold higher when derived from oxygen isotope data compared to concentration data. Through accounting for diel variation in ecosystem respiration, our isotopically-derived rates suggest that ecosystem respiration and microbial carbon cycling in rivers is more rapid than predicted by traditional methods.
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影响因子:
2.1
作者:
BEARDALL, J;BURGERWIERSMA, T;FONTVIELLE, D
通讯作者:
FONTVIELLE, D
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
J. Hutchens;J. B. Wallace;J. Grubaugh
通讯作者:
J. Grubaugh
影响因子:
4.8
作者:
Hotchkiss, Erin R.;Hall, Robert O., Jr.
通讯作者:
Hall, Robert O., Jr.
DOI:
10.1201/9781315373010-7
发表时间:
2018-04
期刊:
--
影响因子:
--
作者:
Sumio Watanabe
通讯作者:
Sumio Watanabe
影响因子:
5
作者:
J. Venkiteswaran;S. Schiff;L. Wassenaar
通讯作者:
L. Wassenaar