Nutrient supply controls picoplankton community structure during three contrasting seasons in the Northwestern Mediterranean Sea
19 pages, 9 figures, 3 tables
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| Format: | artículo biblioteca |
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Inter Research
2016-02
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| Subjects: | Turbulence, Nutrient supply, Picoplankton, Mediterranean Sea, Margalef’s Mandala, |
| Online Access: | http://hdl.handle.net/10261/159790 |
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dig-icm-es-10261-1597902021-06-25T07:43:44Z Nutrient supply controls picoplankton community structure during three contrasting seasons in the Northwestern Mediterranean Sea Mouriño-Carballido, Beatriz Hojas, E. Cermeño, Pedro Chouciño, Paloma Fernández-Castro, B. Latasa, Mikel Marañón, Emilio Morán, Xosé Anxelu G. Vidal, Montserrat Turbulence Nutrient supply Picoplankton Mediterranean Sea Margalef’s Mandala 19 pages, 9 figures, 3 tables We investigated the influence of ocean mixing and nutrient supply dynamics on picoplankton community composition in the context of Margalef's Mandala (Margalef 1978). Simultaneous measurements of microturbulence, nutrient concentration, and autotrophic and heterotrophic picoplankton properties, were collected during 3 cruises carried out in the northwestern Mediterranean Sea in March (F1), April/May (F2) and September (F3) 2009. The 3 cruises sampled different oceanographic conditions, starting with early stages of the late winter-early spring bloom, followed by the late stage of the bloom, and finally summer stratification. As a result of the variability in vertical diffusivity and the nitrate gradient across the nitracline, nitrate vertical fluxes were higher during F1 (23 ± 35 mmol m d), compared to F2 (0.4 ± 0.2 mmol m d) and F3 (0.09 ± 0.09 mmol m d). Prochlorococcus abundance was low when nitrate supply was high, Synechococcus exhibited the highest abundances at intermediate levels of nitrate supply and highest irradiance during F2, and large and small picoeukaryotic groups increased their abundance under high nutrient supply in F1. No significant relationships between the abundance of high and low nucleic acid heterotrophic bacteria and nitrate supply were found. In agreement with Margalef's model, our results show different responses of picophytoplankton groups to nitrate supply (probably reflecting differences in nutrient uptake abilities), and that the ratio of prokaryotic to picoeukaryotic photoautotrophic biomass decreases with increasing nitrate supply This work was funded by the Spanish projects TRYNITROP (CTM2004-05174-C02), FAMOSO (CTM2008-06261-C03), TURBIMOC (CTM2009-06712-E/MAR), and CHAOS (CTM 2012-30680). P.C. was supported by a Ramon y Cajal fellow-ship. B.F.-C. thanks the Spanish Government for support through a FPU fellowship (AP2010-5594) Peer Reviewed 2018-01-29T10:17:39Z 2018-01-29T10:17:39Z 2016-02 2018-01-29T10:17:40Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.3354/meps11558 issn: 0171-8630 e-issn: 1616-1599 Marine Ecology Progress Series 543: 1-19 (2016) http://hdl.handle.net/10261/159790 10.3354/meps11558 Publisher's version https://doi.org/10.3354/meps11558 Sí open Inter Research |
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biblioteca |
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Biblioteca del ICM España |
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Turbulence Nutrient supply Picoplankton Mediterranean Sea Margalef’s Mandala Turbulence Nutrient supply Picoplankton Mediterranean Sea Margalef’s Mandala |
| spellingShingle |
Turbulence Nutrient supply Picoplankton Mediterranean Sea Margalef’s Mandala Turbulence Nutrient supply Picoplankton Mediterranean Sea Margalef’s Mandala Mouriño-Carballido, Beatriz Hojas, E. Cermeño, Pedro Chouciño, Paloma Fernández-Castro, B. Latasa, Mikel Marañón, Emilio Morán, Xosé Anxelu G. Vidal, Montserrat Nutrient supply controls picoplankton community structure during three contrasting seasons in the Northwestern Mediterranean Sea |
| description |
19 pages, 9 figures, 3 tables |
| format |
artículo |
| topic_facet |
Turbulence Nutrient supply Picoplankton Mediterranean Sea Margalef’s Mandala |
| author |
Mouriño-Carballido, Beatriz Hojas, E. Cermeño, Pedro Chouciño, Paloma Fernández-Castro, B. Latasa, Mikel Marañón, Emilio Morán, Xosé Anxelu G. Vidal, Montserrat |
| author_facet |
Mouriño-Carballido, Beatriz Hojas, E. Cermeño, Pedro Chouciño, Paloma Fernández-Castro, B. Latasa, Mikel Marañón, Emilio Morán, Xosé Anxelu G. Vidal, Montserrat |
| author_sort |
Mouriño-Carballido, Beatriz |
| title |
Nutrient supply controls picoplankton community structure during three contrasting seasons in the Northwestern Mediterranean Sea |
| title_short |
Nutrient supply controls picoplankton community structure during three contrasting seasons in the Northwestern Mediterranean Sea |
| title_full |
Nutrient supply controls picoplankton community structure during three contrasting seasons in the Northwestern Mediterranean Sea |
| title_fullStr |
Nutrient supply controls picoplankton community structure during three contrasting seasons in the Northwestern Mediterranean Sea |
| title_full_unstemmed |
Nutrient supply controls picoplankton community structure during three contrasting seasons in the Northwestern Mediterranean Sea |
| title_sort |
nutrient supply controls picoplankton community structure during three contrasting seasons in the northwestern mediterranean sea |
| publisher |
Inter Research |
| publishDate |
2016-02 |
| url |
http://hdl.handle.net/10261/159790 |
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