Multiple sources and sinks of dissolved inorganic carbon across Swedish streams, refocusing the lens of stable C isotopes.
Multiple sources and sinks of dissolved inorganic carbon across Swedish streams, refocusing the lens of stable C isotopes.
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跨瑞典流的多个溶解的无机碳的来源和水槽，重新聚焦了稳定的C同位素的镜头。
DOI：
10.1038/s41598-017-09049-9
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发表时间：
2017-08-22
影响因子：
4.6
通讯作者：
Bishop K
中科院分区：
文献类型：
--
作者：
Campeau A;Wallin MB;Giesler R;Löfgren S;Mörth CM;Schiff S;Venkiteswaran JJ;Bishop K
众所周知，水系溶解无机碳(DIC)通量在全球碳循环中起着核心作用，然而水系DIC的来源在很大程度上仍未得到解决。在这里，我们从瑞典各地的河流中探索δ13C-DIC的大规模模式，以分离和进一步量化河流DIC的源和汇。我们发现，河流DIC受多种源和汇的控制，包括生物源和地源源、二氧化碳逃逸以及河流中的过程。虽然土壤呼吸是所有河流DIC的主要来源，但在最北端地区发现了地源DIC的影响。所有溪流都受到不同程度的大气二氧化碳逃逸的影响，但δ13C-DIC的残差也表明了溪流代谢和厌氧过程的显著影响。由于这些源和汇的多样性，我们强调，简单地量化水生DIC通量将不足以表征它们在全球碳循环中的作用。
It is well established that stream dissolved inorganic carbon (DIC) fluxes play a central role in the global C cycle, yet the sources of stream DIC remain to a large extent unresolved. Here, we explore large-scale patterns in δ13C-DIC from streams across Sweden to separate and further quantify the sources and sinks of stream DIC. We found that stream DIC is governed by a variety of sources and sinks including biogenic and geogenic sources, CO2 evasion, as well as in-stream processes. Although soil respiration was the main source of DIC across all streams, a geogenic DIC influence was identified in the northernmost region. All streams were affected by various degrees of atmospheric CO2 evasion, but residual variance in δ13C-DIC also indicated a significant influence of in-stream metabolism and anaerobic processes. Due to those multiple sources and sinks, we emphasize that simply quantifying aquatic DIC fluxes will not be sufficient to characterise their role in the global C cycle.
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影响因子：
18.3
作者：
Battin, Tom J.;Kaplan, Louis A.;Sabater, Francesc
通讯作者：
Sabater, Francesc
影响因子：
5.2
作者：
Campeau, Audrey;Lapierre, Jean-Francois;del Giorgio, Paul A.
通讯作者：
del Giorgio, Paul A.
影响因子：
11.6
作者：
Dinsmore, Kerry J.;Billett, Michael F.;Helfter, Carole
通讯作者：
Helfter, Carole
影响因子：
3.2
作者：
Doctor, Daniel H.;Kendall, Carol;Boyer, Elizabeth W.
通讯作者：
Boyer, Elizabeth W.
影响因子：
4
作者：
Finlay, JC
通讯作者：
Finlay, JC