Carbon and nitrogen concentrations, stocks, and isotopic compositions in red sea seagrass and mangrove sediments
Coastal vegetated ecosystems are intense global carbon (C) sinks; however, seagrasses and mangroves in the Central Red Sea are depleted in organic C (C). Here, we tested whether C depletion prevails along the Red Sea, or if sediment C and nitrogen (N) stocks reflect the latitudinal productivity grad...
| Autores: | , , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/202806 |
| Acceso en línea: | http://hdl.handle.net/10261/202806 |
| Access Level: | acceso abierto |
| Palabra clave: | nitrogen Carbon sediment stocks stable isotopes stable isotope mixing model Seagrasses mangroves |
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Carbon and nitrogen concentrations, stocks, and isotopic compositions in red sea seagrass and mangrove sedimentsGarcias-Bonet, NeusDelgado Huertas, AntonioCarrillo-de-Albornoz, PalomaAnton, AndreaAlmahasheer, HananMarbà, NúriaHendriks, Iris E.Krause-Jensen, DorteDuarte, Carlos M.nitrogenCarbonsediment stocksstable isotopesstable isotope mixing modelSeagrassesmangrovesCoastal vegetated ecosystems are intense global carbon (C) sinks; however, seagrasses and mangroves in the Central Red Sea are depleted in organic C (C). Here, we tested whether C depletion prevails along the Red Sea, or if sediment C and nitrogen (N) stocks reflect the latitudinal productivity gradient of the Red Sea. We assessed C and N concentrations, stocks, isotopic compositions (δC and δN), and the potential contribution of primary producers to the organic matter accumulation in seagrass and mangrove sediments along the Eastern coast of the Red Sea. Sediment C concentration was higher in mangroves than seagrasses, while N concentrations were similar, resulting in higher C/N ratios in mangrove than seagrass sediments. Mangrove C stocks (integrated over the top 10 cm) were twofold higher than those of seagrasses. N concentrations and stocks decreased from south to north in seagrass sediments matching the productivity gradient while C concentrations and stocks were uniform. The δN decreased from south to north in seagrass and mangrove sediments, reflecting a shift from nitrate and nitrite as N sources in the south, to N fixation toward the north. Stable isotope mixing models showed that seagrass leaves and macroalgae blades were the major contributors to the organic matter accumulation in seagrass sediments; while mangrove leaves were the major contributors in mangrove sediments. Overall, vegetated sediments in the Red Sea tend to be carbonate-rich and depleted in C and N, compared to coastal habitats elsewhere. Specifically, mean C stocks in Red Sea seagrass and mangrove sediments (7.2 ± 0.4 and 14.5 ± 1.4 Mg C ha, respectively) are lower than previously reported mean global values. This new information of Blue Carbon resources in the Red Sea provides a background for Blue Carbon programs in the region while also helping to balance global estimates.This research was funded by the King Abdullah University of Science and Technology through base-line funding to CD and CCF funding to the Red Sea Research Center.Frontiers MediaKing Abdullah University of Science and TechnologyConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2020202020192020info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/202806reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://doi.org/10.3389/fmars.2019.267Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2028062026-05-22T06:33:51Z |
| dc.title.none.fl_str_mv |
Carbon and nitrogen concentrations, stocks, and isotopic compositions in red sea seagrass and mangrove sediments |
| title |
Carbon and nitrogen concentrations, stocks, and isotopic compositions in red sea seagrass and mangrove sediments |
| spellingShingle |
Carbon and nitrogen concentrations, stocks, and isotopic compositions in red sea seagrass and mangrove sediments Garcias-Bonet, Neus nitrogen Carbon sediment stocks stable isotopes stable isotope mixing model Seagrasses mangroves |
| title_short |
Carbon and nitrogen concentrations, stocks, and isotopic compositions in red sea seagrass and mangrove sediments |
| title_full |
Carbon and nitrogen concentrations, stocks, and isotopic compositions in red sea seagrass and mangrove sediments |
| title_fullStr |
Carbon and nitrogen concentrations, stocks, and isotopic compositions in red sea seagrass and mangrove sediments |
| title_full_unstemmed |
Carbon and nitrogen concentrations, stocks, and isotopic compositions in red sea seagrass and mangrove sediments |
| title_sort |
Carbon and nitrogen concentrations, stocks, and isotopic compositions in red sea seagrass and mangrove sediments |
| dc.creator.none.fl_str_mv |
Garcias-Bonet, Neus Delgado Huertas, Antonio Carrillo-de-Albornoz, Paloma Anton, Andrea Almahasheer, Hanan Marbà, Núria Hendriks, Iris E. Krause-Jensen, Dorte Duarte, Carlos M. |
| author |
Garcias-Bonet, Neus |
| author_facet |
Garcias-Bonet, Neus Delgado Huertas, Antonio Carrillo-de-Albornoz, Paloma Anton, Andrea Almahasheer, Hanan Marbà, Núria Hendriks, Iris E. Krause-Jensen, Dorte Duarte, Carlos M. |
| author_role |
author |
| author2 |
Delgado Huertas, Antonio Carrillo-de-Albornoz, Paloma Anton, Andrea Almahasheer, Hanan Marbà, Núria Hendriks, Iris E. Krause-Jensen, Dorte Duarte, Carlos M. |
| author2_role |
author author author author author author author author |
| dc.contributor.none.fl_str_mv |
King Abdullah University of Science and Technology Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72] |
| dc.subject.none.fl_str_mv |
nitrogen Carbon sediment stocks stable isotopes stable isotope mixing model Seagrasses mangroves |
| topic |
nitrogen Carbon sediment stocks stable isotopes stable isotope mixing model Seagrasses mangroves |
| description |
Coastal vegetated ecosystems are intense global carbon (C) sinks; however, seagrasses and mangroves in the Central Red Sea are depleted in organic C (C). Here, we tested whether C depletion prevails along the Red Sea, or if sediment C and nitrogen (N) stocks reflect the latitudinal productivity gradient of the Red Sea. We assessed C and N concentrations, stocks, isotopic compositions (δC and δN), and the potential contribution of primary producers to the organic matter accumulation in seagrass and mangrove sediments along the Eastern coast of the Red Sea. Sediment C concentration was higher in mangroves than seagrasses, while N concentrations were similar, resulting in higher C/N ratios in mangrove than seagrass sediments. Mangrove C stocks (integrated over the top 10 cm) were twofold higher than those of seagrasses. N concentrations and stocks decreased from south to north in seagrass sediments matching the productivity gradient while C concentrations and stocks were uniform. The δN decreased from south to north in seagrass and mangrove sediments, reflecting a shift from nitrate and nitrite as N sources in the south, to N fixation toward the north. Stable isotope mixing models showed that seagrass leaves and macroalgae blades were the major contributors to the organic matter accumulation in seagrass sediments; while mangrove leaves were the major contributors in mangrove sediments. Overall, vegetated sediments in the Red Sea tend to be carbonate-rich and depleted in C and N, compared to coastal habitats elsewhere. Specifically, mean C stocks in Red Sea seagrass and mangrove sediments (7.2 ± 0.4 and 14.5 ± 1.4 Mg C ha, respectively) are lower than previously reported mean global values. This new information of Blue Carbon resources in the Red Sea provides a background for Blue Carbon programs in the region while also helping to balance global estimates. |
| publishDate |
2019 |
| dc.date.none.fl_str_mv |
2019 2020 2020 2020 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article http://purl.org/coar/resource_type/c_6501 Publisher's version info:eu-repo/semantics/publishedVersion |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/10261/202806 |
| url |
http://hdl.handle.net/10261/202806 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
http://doi.org/10.3389/fmars.2019.267 Sí |
| dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess |
| eu_rights_str_mv |
openAccess |
| dc.publisher.none.fl_str_mv |
Frontiers Media |
| publisher.none.fl_str_mv |
Frontiers Media |
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reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC instname:Consejo Superior de Investigaciones Científicas (CSIC) |
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Consejo Superior de Investigaciones Científicas (CSIC) |
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DIGITAL.CSIC. Repositorio Institucional del CSIC |
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DIGITAL.CSIC. Repositorio Institucional del CSIC |
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1869410069662138368 |
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15,81155 |