Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/135096
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Coccolithophore calcification is independent of carbonate chemistry in the tropical ocean |
Autor: | Marañón, Emilio; Balch, W. M.; Cermeño, Pedro CSIC ORCID ; Sobrino, Cristina CSIC ORCID; Fernández-Jiménez, Ana CSIC ORCID ; Huete-Ortega, María; López-Sandoval, Daffne CSIC ORCID; Delgado, Maximino CSIC ORCID; Estrada, Marta CSIC ORCID ; Álvarez-Rodríguez, Marta CSIC ORCID; Fernández-Guallart, Elisa; Pelejero, Carles CSIC ORCID ; González, Natalia | Fecha de publicación: | jul-2016 | Editor: | Association for the Sciences of Limnology and Oceanography | Citación: | Limnology and Oceanography 61(4): 1345-1357 (2016) | Resumen: | Short-term experiments indicate that seawater acidification can cause a decrease in the rate of calcification by coccolithophores, but the relationship between carbonate chemistry and coccolithophore calcification rate in natural assemblages is still unclear. During the Malaspina 2010 circumnavigation, we measured primary production, calcification, coccolithophore abundance, particulate inorganic carbon (PIC) concentration, and the parameters of the carbonate system, along basin-scale transects in the tropical Atlantic, Indian and Pacific oceans. Euphotic layer-integrated calcification and mean cell-specific calcification in the euphotic layer ranged between 2–10 mgC m−2 d−1 and 5–20 pgC cell−1 d−1, respectively. We found a significant relationship between primary production and calcification, such that the calcification to primary production (CP/PP) ratio was relatively invariant among ocean basins, with an overall mean value of 0.05 ± 0.04. Extrapolating this value to the entire ocean would result in a global pelagic calcification rate of 2.4 PtC yr−1. The mean PIC concentration in surface waters was 1.8 ± 1.6 mgC m−3 and its turnover time averaged 20 d. We combined our data of calcification, primary production, and carbonate chemistry from Malaspina 2010 with those obtained during two previous cruises in the northern Arabian Sea. Both the CP/PP ratio and cell-specific calcification were largely constant across a wide range of calcite saturation state (1.5–6.5), [ inline image]/[H+] (0.08–0.24; mol: μmol), and pH (7.6–8.1), which indicates that calcification by natural coccolithophore assemblages was independent of carbonate chemistry. Our results suggest that coccolithophore calcification, at least in tropical regions, may not be decreasing in the currently acidifying ocean | Descripción: | Marañón, Emilio ... et al.-- 13 pages, 7 figures, 1 table, supporting information https://dx.doi.org/10.1002/lno.10295 | Versión del editor: | https://doi.org/10.1002/lno.10295 | URI: | http://hdl.handle.net/10261/135096 | DOI: | 10.1002/lno.10295 | Identificadores: | issn: 0024-3590 |
Aparece en las colecciones: | (ICM) Artículos (IEO) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
Marañon_et_al_2016.pdf | 480,84 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
19
checked on 16-mar-2024
WEB OF SCIENCETM
Citations
17
checked on 28-feb-2024
Page view(s)
369
checked on 18-mar-2024
Download(s)
235
checked on 18-mar-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.