When Water Vanishes: Magnitude and Regulation of Carbon Dioxide Emissions from Dry Temporary Streams
Most fluvial networks worldwide include watercourses that recurrently cease to flow and run dry. The spatial and temporal extent of the dry phase of these temporary watercourses is increasing as a result of global change. Yet, current estimates of carbon emissions from fluvial networks do not consid...
| Authors: | ; ; ; ; ; ; ; ; |
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| Format: | Article |
| Status: | Published version |
| Publication date: | 2016 |
| Country: | España |
| Institution: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repository: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:10256/13136 |
| Online Access: | http://hdl.handle.net/10256/13136 |
| Access Level: | Embargoed access |
| Keyword: | greenhouse gas emissions intermittent streams Gasos d'efecte hivernacle Greenhouse gases Sequeres Droughts Ecologia fluvial Stream ecology |
| _version_ | 1878742570581884928 |
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| author | Gómez Gener, Lluís |
| author2 | Obrador, Biel Marcé Romero, Rafael Acuña, Vicenç Catalán, Núria Casas Ruiz, Joan Pere Sabater, Sergi Muñoz Gràcia, Isabel von Schiller, Daniel |
| author2_role | author author author author author author author author |
| author_browse | Acuña, Vicenç Casas Ruiz, Joan Pere Catalán, Núria Gómez Gener, Lluís Marcé Romero, Rafael Muñoz Gràcia, Isabel Obrador, Biel Sabater, Sergi von Schiller, Daniel |
| author_facet | Gómez Gener, Lluís Obrador, Biel Marcé Romero, Rafael Acuña, Vicenç Catalán, Núria Casas Ruiz, Joan Pere Sabater, Sergi Muñoz Gràcia, Isabel von Schiller, Daniel |
| author_role | author |
| collection | Recercat. Dipósit de la Recerca de Catalunya |
| description | Most fluvial networks worldwide include watercourses that recurrently cease to flow and run dry. The spatial and temporal extent of the dry phase of these temporary watercourses is increasing as a result of global change. Yet, current estimates of carbon emissions from fluvial networks do not consider temporary watercourses when they are dry. We characterized the magnitude and variability of carbon emissions from dry watercourses by measuring the carbon dioxide (CO2) flux from 10 dry streambeds of a fluvial network during the dry period and comparing it to the CO2 flux from the same streambeds during the flowing period and to the CO2 flux from their adjacent upland soils. We also looked for potential drivers regulating the CO2 emissions by examining the main physical and chemical properties of dry streambed sediments and adjacent upland soils. The CO2 efflux from dry streambeds (mean ± SD = 781.4 ± 390.2 mmol m−2 day−1) doubled the CO2 efflux from flowing streambeds (305.6 ± 206.1 mmol m−2 day−1) and was comparable to the CO2 efflux from upland soils (896.1 ± 263.2 mmol m−2 day−1). However, dry streambed sediments and upland soils were physicochemically distinct and differed in the variables regulating their CO2 efflux. Overall, our results indicate that dry streambeds constitute a unique and biogeochemically active habitat that can emit significant amounts of CO2 to the atmosphere. Thus, omitting CO2 emissions from temporary streams when they are dry may overlook the role of a key component of the carbon balance of fluvial networks |
| eu_rights_str_mv | embargoedAccess |
| format | article |
| id | ES_f84f9b4dbd842e2a2a6a3b42e515fdc7 |
| institution | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| instname_str | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:recercat.cat:10256/13136 |
| publishDate | 2016 |
| publishDateSort | 2016 |
| publisher | Springer Verlag |
| publisherStr | Springer Verlag |
| reponame_str | Recercat. Dipósit de la Recerca de Catalunya |
| spelling | When Water Vanishes: Magnitude and Regulation of Carbon Dioxide Emissions from Dry Temporary Streams Gómez Gener, Lluís Obrador, Biel Marcé Romero, Rafael Acuña, Vicenç Catalán, Núria Casas Ruiz, Joan Pere Sabater, Sergi Muñoz Gràcia, Isabel von Schiller, Daniel greenhouse gas emissions intermittent streams Gasos d'efecte hivernacle Greenhouse gases Sequeres Droughts Ecologia fluvial Stream ecology Most fluvial networks worldwide include watercourses that recurrently cease to flow and run dry. The spatial and temporal extent of the dry phase of these temporary watercourses is increasing as a result of global change. Yet, current estimates of carbon emissions from fluvial networks do not consider temporary watercourses when they are dry. We characterized the magnitude and variability of carbon emissions from dry watercourses by measuring the carbon dioxide (CO2) flux from 10 dry streambeds of a fluvial network during the dry period and comparing it to the CO2 flux from the same streambeds during the flowing period and to the CO2 flux from their adjacent upland soils. We also looked for potential drivers regulating the CO2 emissions by examining the main physical and chemical properties of dry streambed sediments and adjacent upland soils. The CO2 efflux from dry streambeds (mean ± SD = 781.4 ± 390.2 mmol m−2 day−1) doubled the CO2 efflux from flowing streambeds (305.6 ± 206.1 mmol m−2 day−1) and was comparable to the CO2 efflux from upland soils (896.1 ± 263.2 mmol m−2 day−1). However, dry streambed sediments and upland soils were physicochemically distinct and differed in the variables regulating their CO2 efflux. Overall, our results indicate that dry streambeds constitute a unique and biogeochemically active habitat that can emit significant amounts of CO2 to the atmosphere. Thus, omitting CO2 emissions from temporary streams when they are dry may overlook the role of a key component of the carbon balance of fluvial networks This research was funded by the Spanish Ministry of Economy and Competitiveness through the Projects CGL2011-30474-C02-01 and CGL2014-58760-C3-1-R. Springer Verlag http://hdl.handle.net/10256/13136 |
| spellingShingle | When Water Vanishes: Magnitude and Regulation of Carbon Dioxide Emissions from Dry Temporary Streams Gómez Gener, Lluís greenhouse gas emissions intermittent streams Gasos d'efecte hivernacle Greenhouse gases Sequeres Droughts Ecologia fluvial Stream ecology |
| status_str | publishedVersion |
| title | When Water Vanishes: Magnitude and Regulation of Carbon Dioxide Emissions from Dry Temporary Streams |
| title_full | When Water Vanishes: Magnitude and Regulation of Carbon Dioxide Emissions from Dry Temporary Streams |
| title_fullStr | When Water Vanishes: Magnitude and Regulation of Carbon Dioxide Emissions from Dry Temporary Streams |
| title_full_unstemmed | When Water Vanishes: Magnitude and Regulation of Carbon Dioxide Emissions from Dry Temporary Streams |
| title_short | When Water Vanishes: Magnitude and Regulation of Carbon Dioxide Emissions from Dry Temporary Streams |
| title_sort | When Water Vanishes: Magnitude and Regulation of Carbon Dioxide Emissions from Dry Temporary Streams |
| topic | greenhouse gas emissions intermittent streams Gasos d'efecte hivernacle Greenhouse gases Sequeres Droughts Ecologia fluvial Stream ecology |
| topic_facet | greenhouse gas emissions intermittent streams Gasos d'efecte hivernacle Greenhouse gases Sequeres Droughts Ecologia fluvial Stream ecology |
| url | http://hdl.handle.net/10256/13136 |