Role of slowly settling particles in the ocean carbon cycle
Here we present results from sediment traps that separate particles as a function of their settling velocity, which were moored in the Canary Current region over a 1.5-year period. This study represents the longest time series using “in situ” particle settling velocity traps to date and are unique i...
| Authors: | ; ; ; ; ; ; ; ; ; |
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| Format: | Article |
| Publication date: | 2010 |
| Country: | España |
| Repository: | accedaCRIS portal de investigación de la Universidad de las Palmas de Gran Canaria |
| OAI Identifier: | oai:accedacris.ulpgc.es:10553/12827 |
| Online Access: | http://hdl.handle.net/10553/12827 |
| Access Level: | Open access |
| Keyword: | 2510 Oceanografía Particulate Organic-Matter Twilight Zone Flux Pacific Rates Collection Community Ballast Traps Sea |
| _version_ | 1878737390846083072 |
|---|---|
| author | Alonso-González, Iván J. |
| author2 | Aristegui, Javier Lee, Cindy Sánchez-Vidal, Anna Calafat, Antoni Fabrés, Joan Sangrá Inciarte, Pablo Masqué, Pere Hernández-Guerra, Alonso Benítez Barrios, Verónica |
| author2_role | author author author author author author author author author |
| author_browse | Alonso-González, Iván J. Aristegui, Javier Benítez Barrios, Verónica Calafat, Antoni Fabrés, Joan Hernández-Guerra, Alonso Lee, Cindy Masqué, Pere Sangrá Inciarte, Pablo Sánchez-Vidal, Anna |
| author_facet | Alonso-González, Iván J. Aristegui, Javier Lee, Cindy Sánchez-Vidal, Anna Calafat, Antoni Fabrés, Joan Sangrá Inciarte, Pablo Masqué, Pere Hernández-Guerra, Alonso Benítez Barrios, Verónica |
| author_role | author |
| collection | accedaCRIS portal de investigación de la Universidad de las Palmas de Gran Canaria |
| description | Here we present results from sediment traps that separate particles as a function of their settling velocity, which were moored in the Canary Current region over a 1.5-year period. This study represents the longest time series using “in situ” particle settling velocity traps to date and are unique in providing year-round estimates. We find that, at least during half of the year in subtropical waters (the largest ocean domain), more than 60% of total particulate organic carbon is contained in slowly settling particles (0.7-11 m d−1). Analyses of organic biomarkers reveal that these particles have the same degradation state, or are even fresher than rapidly sinking particles. Thus, if slowly settling particles dominate the exportable carbon pool, most organic matter would be respired in surface waters, acting as a biological source of CO2 susceptible to exchange with the atmosphere. In the context of climate change, if the predicted changes in phytoplankton community structure occur, slowly settling particles would be favored, affecting the strength of the biological pump in the ocean. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_9f0c1ea8c19d66d1f83db3d7bdae7b78 |
| institution | |
| instname_str | |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:accedacris.ulpgc.es:10553/12827 |
| publishDate | 2010 |
| publishDateSort | 2010 |
| reponame_str | accedaCRIS portal de investigación de la Universidad de las Palmas de Gran Canaria |
| spelling | Role of slowly settling particles in the ocean carbon cycle Alonso-González, Iván J. Aristegui, Javier Lee, Cindy Sánchez-Vidal, Anna Calafat, Antoni Fabrés, Joan Sangrá Inciarte, Pablo Masqué, Pere Hernández-Guerra, Alonso Benítez Barrios, Verónica 2510 Oceanografía Particulate Organic-Matter Twilight Zone Flux Pacific Rates Collection Community Ballast Traps Sea Here we present results from sediment traps that separate particles as a function of their settling velocity, which were moored in the Canary Current region over a 1.5-year period. This study represents the longest time series using “in situ” particle settling velocity traps to date and are unique in providing year-round estimates. We find that, at least during half of the year in subtropical waters (the largest ocean domain), more than 60% of total particulate organic carbon is contained in slowly settling particles (0.7-11 m d−1). Analyses of organic biomarkers reveal that these particles have the same degradation state, or are even fresher than rapidly sinking particles. Thus, if slowly settling particles dominate the exportable carbon pool, most organic matter would be respired in surface waters, acting as a biological source of CO2 susceptible to exchange with the atmosphere. In the context of climate change, if the predicted changes in phytoplankton community structure occur, slowly settling particles would be favored, affecting the strength of the biological pump in the ocean. 5 3,505 Q1 SCIE http://hdl.handle.net/10553/12827 |
| spellingShingle | Role of slowly settling particles in the ocean carbon cycle Alonso-González, Iván J. 2510 Oceanografía Particulate Organic-Matter Twilight Zone Flux Pacific Rates Collection Community Ballast Traps Sea |
| title | Role of slowly settling particles in the ocean carbon cycle |
| title_full | Role of slowly settling particles in the ocean carbon cycle |
| title_fullStr | Role of slowly settling particles in the ocean carbon cycle |
| title_full_unstemmed | Role of slowly settling particles in the ocean carbon cycle |
| title_short | Role of slowly settling particles in the ocean carbon cycle |
| title_sort | Role of slowly settling particles in the ocean carbon cycle |
| topic | 2510 Oceanografía Particulate Organic-Matter Twilight Zone Flux Pacific Rates Collection Community Ballast Traps Sea |
| topic_facet | 2510 Oceanografía Particulate Organic-Matter Twilight Zone Flux Pacific Rates Collection Community Ballast Traps Sea |
| url | http://hdl.handle.net/10553/12827 |