Sediment respiration pulses in intermittent rivers and ephemeral streams

von Schiller Daniel, Datry Thibault, Corti Roland, Foulquier Arnaud, Tockner K., Marcé R., García-Baquero G., Odriozola I., Obrador Biel, Elosegi Arturo, Mendoza-Lera C., Gessner M.O., Stubbington R., Albariño R., Allen D.C., Altermatt Florian, Arce María Isabel, Arnon Shai, Banas Damien, Banegas-Medina Andy, Beller Erin, Blanchette Melanie L., Blanco-Libreros Juan F., Blessing Joanna J., Boëchat G., Boersma Kate S., Bogan Michael T., Bonada Núria, Bond Nick R., Brintrup K., Bruder Andreas, Burrows Ryan M., Cancellario Tommaso, Carlson Stephanie M., Cauvy-Fraunié Sophie, Cid N., Danger Michael, de Freitas Terra Bianca, Dehedin A., De Girolamo Anna Maria, del Campo Ruben, Diaz-Villanueva V.D., Duerdoth C.P., Dyer Fiona, Faye Emile, et al.. 2019. Sediment respiration pulses in intermittent rivers and ephemeral streams. Global Biogeochemical Cycles, 33 (10) : 1251-1263.

Url - jeu de données - Entrepôt autre : https://figshare.com/projects/Sediment_Respiration_Pulses_in_Intermittent_Rivers_and_Ephemeral_Streams/66104 / Url - jeu de données - Entrepôt autre : https://doi.org/10.6084/m9.figshare.8863655

Quartile : Q1, Sujet : GEOSCIENCES, MULTIDISCIPLINARY / Quartile : Q1, Sujet : METEOROLOGY & ATMOSPHERIC SCIENCES / Quartile : Q1, Sujet : ENVIRONMENTAL SCIENCES

Résumé : Intermittent rivers and ephemeral streams (IRES) may represent over half the global stream network, but their contribution to respiration and carbon dioxide (CO2) emissions is largely undetermined. In particular, little is known about the variability and drivers of respiration in IRES sediments upon rewetting, which could result in large pulses of CO2. We present a global study examining sediments from 200 dry IRES reaches spanning multiple biomes. Results from standardized assays show that mean respiration increased 32-fold to 66-fold upon sediment rewetting. Structural equation modeling indicates that this response was driven by sediment texture and organic matter quantity and quality, which, in turn, were influenced by climate, land use, and riparian plant cover. Our estimates suggest that respiration pulses resulting from rewetting of IRES sediments could contribute significantly to annual CO2 emissions from the global stream network, with a single respiration pulse potentially increasing emission by 0.2–0.7%. As the spatial and temporal extent of IRES increases globally, our results highlight the importance of recognizing the influence of wetting-drying cycles on respiration and CO2 emissions in stream networks.

Mots-clés Agrovoc : sédiment, dioxyde de carbone, utilisation des terres, cours d'eau éphémère, couverture végétale, légume sec, respiration, réponse de la plante, sédiment carbonaté, rivière

Agences de financement européennes : European Commission

Agences de financement hors UE : Research Groups of the Basque University System

Programme de financement européen : FP7

Projets sur financement : (EU) Managing the effets of multiple stressors on aquatic ecosystems under water scarcity, (ESP) C-HYDROCHANGE, (EU) SAfeguarding Biodiversity and Ecosystem seRvices by integrating CULTURAL values in freshwater management: learning from Māori

Auteurs et affiliations

• von Schiller Daniel, University of the Basque Country (ESP) - auteur correspondant
• Datry Thibault, IRSTEA (FRA)
• Corti Roland, IRSTEA (FRA)
• Foulquier Arnaud, Université Grenoble Alpes (FRA)
• Tockner K., Institute of Freshwater Ecology and Inland Fisheries (DEU)
• Marcé R., Catalan Institute for Water Research (ESP)
• García-Baquero G., University of the Basque Country (ESP)
• Odriozola I., University of the Basque Country (ESP)
• Obrador Biel, UAB (ESP)
• Elosegi Arturo, University of the Basque Country (ESP)
• Mendoza-Lera C., IRSTEA (FRA)
• Gessner M.O., Institute of Freshwater Ecology and Inland Fisheries (DEU)
• Stubbington R., University of Nottingham (GBR)
• Albariño R., INIBIOMA (ARG)
• Allen D.C., University of Oklahoma (USA)
• Altermatt Florian, UZH (CHE)
• Arce María Isabel, Institute of Freshwater Ecology and Inland Fisheries (DEU)
• Arnon Shai, Ben-Gurion University of the Negev (ISR)
• Banas Damien, Université de Lorraine (FRA)
• Banegas-Medina Andy, Universidad de Concepción (CHL)
• Beller Erin, California State University (USA)
• Blanchette Melanie L., Edith Cowan University (AUS)
• Blanco-Libreros Juan F., Universidad de Antioquia (COL)
• Blessing Joanna J., Queensland Government (AUS)
• Boëchat G., Federal University of São João Del-Rei (BRA)
• Boersma Kate S., San Diego State University (USA)
• Bogan Michael T., University of Arizona (USA)
• Bonada Núria, UAB (ESP)
• Bond Nick R., La Trobe University (AUS)
• Brintrup K., Université de Lorraine (FRA)
• Bruder Andreas, University of Applied Sciences and Arts of Southern Switzerland (CHE)
• Burrows Ryan M., Griffith University (AUS)
• Cancellario Tommaso, Universidad Pública de Navarra (ESP)
• Carlson Stephanie M., California State University (USA)
• Cauvy-Fraunié Sophie, IRSTEA (FRA)
• Cid N., University of Arizona (USA)
• Danger Michael, Université de Lorraine (FRA)
• de Freitas Terra Bianca, Universidade Estadual Vale do Acaraú (BRA)
• Dehedin A.
• De Girolamo Anna Maria, National Research Council (ITA)
• del Campo Ruben, University of Murcia (ESP)
• Diaz-Villanueva V.D., INIBIOMA (ARG)
• Duerdoth C.P., Queen Mary University of London (GBR)
• Dyer Fiona, University of Canberra (AUS)
• Faye Emile, CIRAD-PERSYST-UPR HortSys (SEN) ORCID: 0000-0001-7764-3256
• et al.

Source : Cirad-Agritrop (https://agritrop.cirad.fr/605031/)

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