Multiple sources and sinks of dissolved inorganic carbon across Swedish streams, refocusing the lens of stable C isotopes

Abstract 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 quant...

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Autores principales:	Audrey Campeau, Marcus B. Wallin, Reiner Giesler, Stefan Löfgren, Carl-Magnus Mörth, Sherry Schiff, Jason J. Venkiteswaran, Kevin Bishop
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/059871807f2344748f3e459685399187
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spelling	oai:doaj.org-article:059871807f2344748f3e4596853991872021-12-02T15:04:57ZMultiple sources and sinks of dissolved inorganic carbon across Swedish streams, refocusing the lens of stable C isotopes10.1038/s41598-017-09049-92045-2322https://doaj.org/article/059871807f2344748f3e4596853991872017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-09049-9https://doaj.org/toc/2045-2322Abstract 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.Audrey CampeauMarcus B. WallinReiner GieslerStefan LöfgrenCarl-Magnus MörthSherry SchiffJason J. VenkiteswaranKevin BishopNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-14 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Audrey Campeau Marcus B. Wallin Reiner Giesler Stefan Löfgren Carl-Magnus Mörth Sherry Schiff Jason J. Venkiteswaran Kevin Bishop Multiple sources and sinks of dissolved inorganic carbon across Swedish streams, refocusing the lens of stable C isotopes
description	Abstract 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.
format	article
author	Audrey Campeau Marcus B. Wallin Reiner Giesler Stefan Löfgren Carl-Magnus Mörth Sherry Schiff Jason J. Venkiteswaran Kevin Bishop
author_facet	Audrey Campeau Marcus B. Wallin Reiner Giesler Stefan Löfgren Carl-Magnus Mörth Sherry Schiff Jason J. Venkiteswaran Kevin Bishop
author_sort	Audrey Campeau
title	Multiple sources and sinks of dissolved inorganic carbon across Swedish streams, refocusing the lens of stable C isotopes
title_short	Multiple sources and sinks of dissolved inorganic carbon across Swedish streams, refocusing the lens of stable C isotopes
title_full	Multiple sources and sinks of dissolved inorganic carbon across Swedish streams, refocusing the lens of stable C isotopes
title_fullStr	Multiple sources and sinks of dissolved inorganic carbon across Swedish streams, refocusing the lens of stable C isotopes
title_full_unstemmed	Multiple sources and sinks of dissolved inorganic carbon across Swedish streams, refocusing the lens of stable C isotopes
title_sort	multiple sources and sinks of dissolved inorganic carbon across swedish streams, refocusing the lens of stable c isotopes
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/059871807f2344748f3e459685399187
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Multiple sources and sinks of dissolved inorganic carbon across Swedish streams, refocusing the lens of stable C isotopes

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