English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/101527
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 9 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar EndNote (RIS)Exportar EndNote (RIS)
Título

Coupling between upper ocean layer variability and size-fractionated phytoplankton in a non-nutrient-limited environment

Autor Sangrà, Pablo; García Muñoz, Cristina ; Lubián, Luis M. ; Estrada-Allis, S.
Palabras clave Mesoscale
Submesoscale
Vertical mixing
Phytoplankton composition
Antarctica
Physical-biological coupling
Fecha de publicación mar-2014
EditorInter Research
Citación Marine Ecology - Progress Series 499: 35-46 (2014)
ResumenWe describe the coupling between upper ocean layer variability and size-fractionated phytoplankton distribution in the non-nutrient-limited Bransfield Strait region (BS) of Antarctica. For this purpose we use hydrographic and size-fractionated chlorophyll a data from a transect that crossed 2 fronts and an eddy, together with data from 3 stations located in a deeply mixed region, the Antarctic Sound (AS). In the BS transect, small phytoplankton (<20 μm equivalent spherical diameter [ESD]) accounted for 80% of total chl a and their distribution appeared to be linked to cross-frontal variability. On the deepening upper mixed layer (UML) sides of both fronts we observed a deep subducting column-like structure of small phytoplankton biomass. On the shoaling UML sides of both fronts, where there were signs of restratification, we observed a local shallow maximum of small phytoplankton biomass. We propose that this observed phytoplankton distribution may be a response to the development of frontal vertical circulation cells. In the deep, turbulent environment of the AS, larger phytoplankton (>20 μm ESD) accounted for 80% of total chl a. The proportion of large phytoplankton increases as the depth of the upper mixed layer (ZUML), and the corresponding rate of vertical mixing, increases. We hypothesize that this change in phytoplankton composition with varying ZUML is related to the competition for light, and results from modification of the light regime caused by vertical mixing. © The authors 2014. Open Access under Creative Commons by Attribution Licence.
Descripción Sangrà, Pablo et al.
URI http://hdl.handle.net/10261/101527
DOI10.3354/meps10668
Identificadoresdoi: 10.3354/meps10668
issn: 0171-8630
e-issn: 1616-1599
Aparece en las colecciones: (ICMAN) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
accesoRestringido.pdf15,38 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 



NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.