Partitioning inorganic carbon fluxes from paired O2–CO2 gas measurements in a Neotropical headwater stream, Costa Rica
Partitioning inorganic carbon fluxes from paired O2–CO2 gas measurements in a Neotropical headwater stream, Costa Rica
复制标题
从哥斯达黎加新热带源头水流中成对的 O2-CO2 气体测量中划分无机碳通量
DOI:
10.1007/s10533-022-00954-4
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发表时间:
2022
期刊:
影响因子:
4
通讯作者:
Ardón, Marcelo
中科院分区:
文献类型:
--
作者:
Marzolf, Nicholas S.;Small, Gaston E.;Oviedo-Vargas, Diana;Ganong, Carissa N.;Duff, John H.;Ramírez, Alonso;Pringle, Catherine M.;Genereux, David P.;Ardón, Marcelo
The role of streams and rivers in the global carbon (C) cycle remains unconstrained, especially in headwater streams where CO2evasion (FCO2) to the atmosphere is high. Stream C cycling is understudied in the tropics compared to temperate streams, and tropical streams may have among the highest FCO2due to higher temperatures, continuous organic matter inputs, and high respiration rates both in-stream and in surrounding soils. In this paper, we present paired in-stream O2and CO2sensor data from a headwater stream in a lowland rainforest in Costa Rica to explore temporal variability in gas concentrations and ecosystem processes. Further, we estimate groundwater CO2inputs (GWCO2) from riparian well CO2measurements. Paired O2–CO2data reveal stream CO2supersaturation driven by groundwater CO2inputs and large in-stream production of CO2. At short time scales, CO2was diluted during storm events, but increased at longer seasonal scales. Areal fluxes in our study reach show that FCO2is supported by greater in-stream metabolism compared to GWCO2. Our results underscore the importance of tropical headwater streams as large contributors of carbon dioxide to the atmosphere and show evaded C can be derived from both in-stream and terrestrial sources.
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影响因子:
64.8
作者:
J. Stoddard;D. Jeffries;A. Lükewille;T. Clair;P. Dillon;C. Driscoll;M. Forsius;M. Johannessen
通讯作者:
J. Stoddard;D. Jeffries;A. Lükewille;T. Clair;P. Dillon;C. Driscoll;M. Forsius;M. Johannessen
影响因子:
6.1
作者:
Espeleta, J. F.;Clark, D. A.
通讯作者:
Clark, D. A.
DOI:
10.1073/pnas.2106322119
发表时间:
2022-03-15
影响因子:
11.1
作者:
Liu S;Kuhn C;Amatulli G;Aho K;Butman DE;Allen GH;Lin P;Pan M;Yamazaki D;Brinkerhoff C;Gleason C;Xia X;Raymond PA
通讯作者:
Raymond PA
影响因子:
3.7
作者:
G. Small;M. Ardón;A. P. Jackman;J. Duff;F. Triska;A. Ramírez;Marcía N. Snyder;C. Pringle
通讯作者:
C. Pringle
影响因子:
4.5
作者:
A. Lupon;B. Denfeld;H. Laudon;J. Leach;J. Karlsson;R. Sponseller
通讯作者:
R. Sponseller