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Unraveling the effects of wet and dry areas on carbon emissions in an intermittent Mediterranean stream.

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Title: Unraveling the effects of wet and dry areas on carbon emissions in an intermittent Mediterranean stream.
Authors: Camacho‐Santamans, Alba1,2 (AUTHOR) a.camacho-santamans@ub.edu, Obrador, Biel1,3 (AUTHOR), Minaudo, Camille1,3 (AUTHOR), Cañas, Lídia1 (AUTHOR), Wang, Yao4 (AUTHOR), Mejía‐Peralta, Fernanda5 (AUTHOR), Bega, João M. M.6,7 (AUTHOR), Montes‐Pérez, Jorge J.1,2 (AUTHOR), von Schiller, Daniel1,2 (AUTHOR)
Source: Limnology & Oceanography. Mar2026, Vol. 71 Issue 3, p1-15. 15p.
Subjects: Carbon emissions, Ephemeral streams, Biogeochemistry, Climate change, Hydrology, Mediterranean climate
Geographic Terms: Southern Europe
Abstract: Stream hydrological regimes are increasingly altered by water extraction, land‐use change, and climate change, leading to prolonged streambed desiccation in many regions. These alterations significantly impact biogeochemical processes within stream networks. To date, most research on the carbon (C) cycle in aquatic systems has focused on inundated areas, thereby neglecting the potential role of dry streambeds in biogeochemical dynamics. However, some studies have shown that dry streambeds substantially influence C fluxes within fluvial environments, although with limited temporal replication. In this study, we quantify the contribution of dry areas to gaseous C exchange in an intermittent Mediterranean stream. Over 2 yr, we monitored the spatial extent of wet (i.e., inundated) and dry (i.e., air‐exposed) areas and measured carbon dioxide (CO2) and methane (CH4) fluxes along a 100‐m reach using high‐frequency automatic sensors and in‐situ sampling every 2–3 weeks. We found that areal C fluxes were higher in wet compared to dry areas. Fluxes in wet areas displayed strong temporal dynamics, with peaks during phases of rewetting and contraction of the stream. In contrast, fluxes in dry areas were relative stable over time and accounted for 46% of the total reach‐scale C exchange with the atmosphere during the study period. These results emphasize the importance of accounting for inundated and intermittently dry areas when analyzing C exchange dynamics in intermittent streams. This issue is particularly relevant in the current context of climate change, with climate‐driven hydrological changes in many of the world's regions. [ABSTRACT FROM AUTHOR]
Copyright of Limnology & Oceanography is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 192555839
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Unraveling the effects of wet and dry areas on carbon emissions in an intermittent Mediterranean stream.
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  Data: <searchLink fieldCode="AR" term="%22Camacho‐Santamans%2C+Alba%22">Camacho‐Santamans, Alba</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> a.camacho-santamans@ub.edu</i><br /><searchLink fieldCode="AR" term="%22Obrador%2C+Biel%22">Obrador, Biel</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Minaudo%2C+Camille%22">Minaudo, Camille</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cañas%2C+Lídia%22">Cañas, Lídia</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Yao%22">Wang, Yao</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mejía‐Peralta%2C+Fernanda%22">Mejía‐Peralta, Fernanda</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bega%2C+João+M%2E+M%2E%22">Bega, João M. M.</searchLink><relatesTo>6,7</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Montes‐Pérez%2C+Jorge+J%2E%22">Montes‐Pérez, Jorge J.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22von+Schiller%2C+Daniel%22">von Schiller, Daniel</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Limnology+%26+Oceanography%22">Limnology & Oceanography</searchLink>. Mar2026, Vol. 71 Issue 3, p1-15. 15p.
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  Data: <searchLink fieldCode="DE" term="%22Carbon+emissions%22">Carbon emissions</searchLink><br /><searchLink fieldCode="DE" term="%22Ephemeral+streams%22">Ephemeral streams</searchLink><br /><searchLink fieldCode="DE" term="%22Biogeochemistry%22">Biogeochemistry</searchLink><br /><searchLink fieldCode="DE" term="%22Climate+change%22">Climate change</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrology%22">Hydrology</searchLink><br /><searchLink fieldCode="DE" term="%22Mediterranean+climate%22">Mediterranean climate</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Southern+Europe%22">Southern Europe</searchLink>
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  Label: Abstract
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  Data: Stream hydrological regimes are increasingly altered by water extraction, land‐use change, and climate change, leading to prolonged streambed desiccation in many regions. These alterations significantly impact biogeochemical processes within stream networks. To date, most research on the carbon (C) cycle in aquatic systems has focused on inundated areas, thereby neglecting the potential role of dry streambeds in biogeochemical dynamics. However, some studies have shown that dry streambeds substantially influence C fluxes within fluvial environments, although with limited temporal replication. In this study, we quantify the contribution of dry areas to gaseous C exchange in an intermittent Mediterranean stream. Over 2 yr, we monitored the spatial extent of wet (i.e., inundated) and dry (i.e., air‐exposed) areas and measured carbon dioxide (CO2) and methane (CH4) fluxes along a 100‐m reach using high‐frequency automatic sensors and in‐situ sampling every 2–3 weeks. We found that areal C fluxes were higher in wet compared to dry areas. Fluxes in wet areas displayed strong temporal dynamics, with peaks during phases of rewetting and contraction of the stream. In contrast, fluxes in dry areas were relative stable over time and accounted for 46% of the total reach‐scale C exchange with the atmosphere during the study period. These results emphasize the importance of accounting for inundated and intermittently dry areas when analyzing C exchange dynamics in intermittent streams. This issue is particularly relevant in the current context of climate change, with climate‐driven hydrological changes in many of the world's regions. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Limnology & Oceanography is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1002/lno.70348
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      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 15
        StartPage: 1
    Subjects:
      – SubjectFull: Carbon emissions
        Type: general
      – SubjectFull: Ephemeral streams
        Type: general
      – SubjectFull: Biogeochemistry
        Type: general
      – SubjectFull: Climate change
        Type: general
      – SubjectFull: Hydrology
        Type: general
      – SubjectFull: Mediterranean climate
        Type: general
      – SubjectFull: Southern Europe
        Type: general
    Titles:
      – TitleFull: Unraveling the effects of wet and dry areas on carbon emissions in an intermittent Mediterranean stream.
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              M: 03
              Text: Mar2026
              Type: published
              Y: 2026
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