Important contribution of macroalgae to oceanic carbon sequestration
The role of macroalgae in Blue Carbon assessments has been controversial, partially due to uncertainties about the fate of exported macroalgae. Available evidence suggests that macroalgae are exported to reach the open ocean and the deep sea. Nevertheless, this evidence lacks systematic assessment....
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Online Access: | http://hdl.handle.net/10754/656768 https://doi.org/10.1038/s41561-019-0421-8 |
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ftkingabdullahun:oai:repository.kaust.edu.sa:10754/656768 2023-12-31T10:23:03+01:00 Important contribution of macroalgae to oceanic carbon sequestration Ortega, Alejandra Geraldi, Nathan Alam, Intikhab Kamau, Allan Acinas, Silvia G. Logares, Ramiro Gasol, Josep M. Massana, Ramon Krause-Jensen, Dorte Duarte, Carlos M. Bioscience Program Red Sea Research Center (RSRC) Computational Bioscience Research Center (CBRC) Biological and Environmental Sciences and Engineering (BESE) Division Marine Science Program Institut de Ciències del Mar, CSIC, Barcelona, Spain Centre for Marine Ecosystem Research, Edith Cowan University, Western Australia, Australia Arctic Research Centre, Department of Bioscience, Aarhus University, Aarhus, Denmark Department of Bioscience, Aarhus University, Silkeborg, Denmark 2019-08-05 application/pdf http://hdl.handle.net/10754/656768 https://doi.org/10.1038/s41561-019-0421-8 unknown Springer Nature http://www.nature.com/articles/s41561-019-0421-8 https://digital.csic.es/bitstream/10261/192545/3/Ortega_et_al_2019_preprint.pdf Ortega, A., Geraldi, N. R., Alam, I., Kamau, A. A., Acinas, S. G., Logares, R., … Duarte, C. M. (2019). Important contribution of macroalgae to oceanic carbon sequestration. Nature Geoscience, 12(9), 748–754. doi:10.1038/s41561-019-0421-8 doi:10.1038/s41561-019-0421-8 Nature Geoscience http://hdl.handle.net/10754/656768 Archived with thanks to Springer Science and Business Media LLC 2020-02-05 Article 2019 ftkingabdullahun https://doi.org/10.1038/s41561-019-0421-8 2023-12-02T20:22:01Z The role of macroalgae in Blue Carbon assessments has been controversial, partially due to uncertainties about the fate of exported macroalgae. Available evidence suggests that macroalgae are exported to reach the open ocean and the deep sea. Nevertheless, this evidence lacks systematic assessment. Here, we provide robust evidence of macroalgal export beyond coastal habitats. We used metagenomes and metabarcodes from the global expeditions Tara Oceans and Malaspina 2010 Circumnavigation. We discovered macroalgae worldwide at up to 5,000 km from coastal areas. We found 24 orders, most of which belong to the phylum Rhodophyta. The diversity of macroalgae was similar across oceanic regions, although the assemblage composition differed. The South Atlantic Ocean presented the highest macroalgal diversity, whereas the Red Sea was the least diverse region. The abundance of macroalgae sequences attenuated exponentially with depth at a rate of 37.3% km−1, and only 24% of macroalgae available at the surface were expected to reach the seafloor at a depth of 4,000 m. Our findings indicate that macroalgae are exported across the open and the deep ocean, suggesting that macroalgae may be an important source of allochthonous carbon, and their contribution should be considered in Blue Carbon assessments. We thank the Tara Oceans Consortium for data availability. This research was supported by the Malaspina 2010 expedition, funded by the Spanish Ministry of Economy and Competitiveness through the Consolider-Ingenio programme to C.M.D. (reference: CSD2008-00077); CARMA, funded by the Independent Research Fund Denmark to D.K.-J. (reference: 8021-00222B); and King Abdullah University of Science and Technology’s project BAS/1/1071-01-01 to C.M.D. We thank all of the scientists and crew for support during sample collection on the Malaspina 2010 cruise, and especially E. Borrull, C. Díez-Vives, E. Lara, D. Vaqué, G. Salazar and F. Cornejo-Castillo for DNA sampling. The authors are grateful to the KAUST Supercomputing Laboratory ... Article in Journal/Newspaper South Atlantic Ocean King Abdullah University of Science and Technology: KAUST Repository Nature Geoscience 12 9 748 754 |
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Open Polar |
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King Abdullah University of Science and Technology: KAUST Repository |
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ftkingabdullahun |
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unknown |
description |
The role of macroalgae in Blue Carbon assessments has been controversial, partially due to uncertainties about the fate of exported macroalgae. Available evidence suggests that macroalgae are exported to reach the open ocean and the deep sea. Nevertheless, this evidence lacks systematic assessment. Here, we provide robust evidence of macroalgal export beyond coastal habitats. We used metagenomes and metabarcodes from the global expeditions Tara Oceans and Malaspina 2010 Circumnavigation. We discovered macroalgae worldwide at up to 5,000 km from coastal areas. We found 24 orders, most of which belong to the phylum Rhodophyta. The diversity of macroalgae was similar across oceanic regions, although the assemblage composition differed. The South Atlantic Ocean presented the highest macroalgal diversity, whereas the Red Sea was the least diverse region. The abundance of macroalgae sequences attenuated exponentially with depth at a rate of 37.3% km−1, and only 24% of macroalgae available at the surface were expected to reach the seafloor at a depth of 4,000 m. Our findings indicate that macroalgae are exported across the open and the deep ocean, suggesting that macroalgae may be an important source of allochthonous carbon, and their contribution should be considered in Blue Carbon assessments. We thank the Tara Oceans Consortium for data availability. This research was supported by the Malaspina 2010 expedition, funded by the Spanish Ministry of Economy and Competitiveness through the Consolider-Ingenio programme to C.M.D. (reference: CSD2008-00077); CARMA, funded by the Independent Research Fund Denmark to D.K.-J. (reference: 8021-00222B); and King Abdullah University of Science and Technology’s project BAS/1/1071-01-01 to C.M.D. We thank all of the scientists and crew for support during sample collection on the Malaspina 2010 cruise, and especially E. Borrull, C. Díez-Vives, E. Lara, D. Vaqué, G. Salazar and F. Cornejo-Castillo for DNA sampling. The authors are grateful to the KAUST Supercomputing Laboratory ... |
author2 |
Bioscience Program Red Sea Research Center (RSRC) Computational Bioscience Research Center (CBRC) Biological and Environmental Sciences and Engineering (BESE) Division Marine Science Program Institut de Ciències del Mar, CSIC, Barcelona, Spain Centre for Marine Ecosystem Research, Edith Cowan University, Western Australia, Australia Arctic Research Centre, Department of Bioscience, Aarhus University, Aarhus, Denmark Department of Bioscience, Aarhus University, Silkeborg, Denmark |
format |
Article in Journal/Newspaper |
author |
Ortega, Alejandra Geraldi, Nathan Alam, Intikhab Kamau, Allan Acinas, Silvia G. Logares, Ramiro Gasol, Josep M. Massana, Ramon Krause-Jensen, Dorte Duarte, Carlos M. |
spellingShingle |
Ortega, Alejandra Geraldi, Nathan Alam, Intikhab Kamau, Allan Acinas, Silvia G. Logares, Ramiro Gasol, Josep M. Massana, Ramon Krause-Jensen, Dorte Duarte, Carlos M. Important contribution of macroalgae to oceanic carbon sequestration |
author_facet |
Ortega, Alejandra Geraldi, Nathan Alam, Intikhab Kamau, Allan Acinas, Silvia G. Logares, Ramiro Gasol, Josep M. Massana, Ramon Krause-Jensen, Dorte Duarte, Carlos M. |
author_sort |
Ortega, Alejandra |
title |
Important contribution of macroalgae to oceanic carbon sequestration |
title_short |
Important contribution of macroalgae to oceanic carbon sequestration |
title_full |
Important contribution of macroalgae to oceanic carbon sequestration |
title_fullStr |
Important contribution of macroalgae to oceanic carbon sequestration |
title_full_unstemmed |
Important contribution of macroalgae to oceanic carbon sequestration |
title_sort |
important contribution of macroalgae to oceanic carbon sequestration |
publisher |
Springer Nature |
publishDate |
2019 |
url |
http://hdl.handle.net/10754/656768 https://doi.org/10.1038/s41561-019-0421-8 |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_relation |
http://www.nature.com/articles/s41561-019-0421-8 https://digital.csic.es/bitstream/10261/192545/3/Ortega_et_al_2019_preprint.pdf Ortega, A., Geraldi, N. R., Alam, I., Kamau, A. A., Acinas, S. G., Logares, R., … Duarte, C. M. (2019). Important contribution of macroalgae to oceanic carbon sequestration. Nature Geoscience, 12(9), 748–754. doi:10.1038/s41561-019-0421-8 doi:10.1038/s41561-019-0421-8 Nature Geoscience http://hdl.handle.net/10754/656768 |
op_rights |
Archived with thanks to Springer Science and Business Media LLC 2020-02-05 |
op_doi |
https://doi.org/10.1038/s41561-019-0421-8 |
container_title |
Nature Geoscience |
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12 |
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9 |
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748 |
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754 |
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