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Título: | The relative effects of upwelling and river flow on the phytoplankton diversity patterns in the ria of A Coruña (NW Spain) |
Autor: | Bode, Antonio CSIC ORCID CVN; Varela, Manuel; Prego, R. CSIC ORCID ; Rozada, F. CSIC ; Santos, Martín D. | Palabras clave: | Connectivity Phytoplankton community Diversity Upwelling Estuary Freshwater flow |
Fecha de publicación: | 2017 | Editor: | Springer Nature | Citación: | Marine Biology 164(4): 93 (2017) | Resumen: | Phytoplankton species assemblages in estuaries are connected to those in rivers and marine environments by local hydrodynamics leading to a continuous flow of taxa. This study revealed differential effects of upwelling and river flow on phytoplankton communities observed in 2011 along a salinity gradient from a river reservoir connected to the sea through a ria-marine bay system in A Coruña (NW Spain, 43° 16–21′ N, 8° 16–22′ W). With 130 phytoplankton taxa identified, the assemblages were dominated in general by diatoms, particularly abundant in the bay and in the estuary, but also by chlorophycea and cyanobacteria in the reservoir. Considering the entire seasonal cycle, the local assemblages were mainly characterized by changes in cryptophytes and diatoms, small dinoflagellates and some freshwater chlorophycea. Salinity, nitrate, and organic matter variables, were the main environmental factors related to the changes in the phytoplankton communities through the system, while phosphate and nitrite were also important for local communities in the estuary and the bay, respectively. The corresponding local phytoplankton assemblages showed moderate levels of connectivity. The estuarine community shared a variable number of taxa with the adjacent zones, depending on the relative strength of upwelling (major influence from the bay) and river flow (major influence of the reservoir) but had on average 35% of unique taxa. Consequently, local and zonal diversity patterns varied seasonally and were not simply related to the salinity gradient driven by the river flow | Descripción: | 16 páginas, 8 figuras, 3 tablas..- This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http:// creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made | Versión del editor: | http://dx.doi.org/10.1007/s00227-017-3126-9 | URI: | http://hdl.handle.net/10261/148860 | DOI: | 10.1007/s00227-017-3126-9 | ISSN: | 0025-3162 | E-ISSN: | 1432-1793 |
Aparece en las colecciones: | (IGM) Artículos (IIM) Artículos |
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