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Título: | Pelagic primary production in the coastal Mediterranean Sea: variability, trends and contribution to basin scale budgets |
Autor: | Salgado, Paula M. CSIC; Regaudie de Gioux, Aurore CSIC ORCID; Antoine, David; Basterretxea, Gotzon CSIC ORCID | Fecha de publicación: | 3-ene-2022 | Editor: | European Geosciences Union | Citación: | Biogeosciences Discussions 19: 47-69 (2022) | Resumen: | We estimated pelagic primary production (PP) in the coastal (<200 m depth) Mediterranean Sea from satellite-borne data, its contribution to basin-scale carbon fixation, its variability, and long-term trends during the period 2002–2016. Annual coastal PP was estimated at 0.041 Gt C, which approximately represents 12 % of total carbon fixation in the Mediterranean Sea. About 51 % of this production occurs in the eastern basin, whereas the western and Adriatic shelves contribute with ∼25 % each of total coastal production. Strong regional variability is revealed in coastal PP, from high-production areas (>300 g C m−2) associated with major river discharges to less productive provinces (<50 g C m−2) located in the southeastern Mediterranean. PP variability in the Mediterranean Sea is dominated by interannual variations, but a notable basin-scale decline (17 %) has been observed since 2012 concurring with a period of increasing sea surface temperatures in the Mediterranean Sea and positive North Atlantic Oscillation and Mediterranean Oscillation climate indices. Long-term trends in PP reveal slight declines in most coastal areas (−0.05 to −0.1 g C m−2 per decade) except in the Adriatic where PP increases at +0.1 g C m−2 per decade. Regionalization of coastal waters based on PP seasonal patterns reveals the importance of river effluents in determining PP in coastal waters that can regionally increase up to 5-fold. Our study provides insight into the contribution of coastal waters to basin-scale carbon balances in the Mediterranean Sea while highlighting the importance of the different temporal and spatial scales of variability. | Versión del editor: | https://doi.org/10.5194/bg-19-47-2022 | URI: | http://hdl.handle.net/10261/260677 | DOI: | 10.5194/bg-19-47-2022 | ISSN: | 1726-4170 | E-ISSN: | 1726-4189 |
Aparece en las colecciones: | (IMEDEA) Artículos |
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Pelagic_primary_production.pdf | 5,79 MB | Adobe PDF | Visualizar/Abrir |
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