Size-dependent photoacclimation of the phytoplankton community in temperate shelf waters (southern Bay of Biscay)

Handle URI:
http://hdl.handle.net/10754/621783
Title:
Size-dependent photoacclimation of the phytoplankton community in temperate shelf waters (southern Bay of Biscay)
Authors:
Álvarez, E; Moran, Xose Anxelu G. ( 0000-0002-9823-5339 ) ; López-Urrutia, Á; Nogueira, E
Abstract:
© Inter-Research 2016. Shelf waters of the Cantabrian Sea (southern Bay of Biscay) are productive ecosystems with a marked seasonality. We present the results from 1 yr of monthly monitoring of the phytoplankton community together with an intensive sampling carried out in 2 contrasting scenarios during the summer and autumn in a mid-shelf area. Stratification was apparent on the shelf in summer, while the water column was comparatively well mixed in autumn. The size structure of the photoautotrophic community, from pico-to micro-phytoplankton, was tightly coupled with the meteo-climatic and hydrographical conditions. Over the short term, variations in the size structure and chlorophyll content of phytoplankton cells were related to changes in the physico-chemical environment, through changes in the availability of nutrients and light. Uncoupling between the dynamics of carbon biomass and chlorophyll resulted in chlorophyll to carbon ratios dependent on body size. The slope of the size dependence of chlorophyll content increased with increasing irradiance, reflecting different photoacclimation plasticity from pico-to micro-phytoplankton. The results have important implications for the productivity and the fate of biogenic carbon in this region, since the size dependence of photosynthetic rates is directly related to the size scaling of chlorophyll content.
KAUST Department:
Red Sea Research Center (RSRC)
Citation:
Álvarez E, Morán X, López-Urrutia Á, Nogueira E (2016) Size-dependent photoacclimation of the phytoplankton community in temperate shelf waters (southern Bay of Biscay). Mar Ecol Prog Ser 543: 73–87. Available: http://dx.doi.org/10.3354/meps11580.
Publisher:
Inter-Research Science Center
Journal:
Marine Ecology Progress Series
Issue Date:
9-Dec-2015
DOI:
10.3354/meps11580
Type:
Article
ISSN:
0171-8630; 1616-1599
Sponsors:
We thank the captain and crew of RVs 'Francisco de Paula Navarro' and 'Jose Rioja' and all participants in the cruises for their work and dedication at sea and in the laboratory. We also thank F. Ronzon, who kindly provided data from his meteorological station in Gijon/Xixon. This work was supported by the Ministerio de Ciencia e Innovacion (project PERPLAN, 'Efecto de las perturbaciones meteorologico-hidrograficas en la estructura de la comunidad planctonica', CTM2006-04854/MAR), the Plan de Ciencia, Tecnologia e Innovacion del Gobierno del Principado de Asturias (project IMAGINA and research grant BP07-081 to E.A.), the Instituto Espanol de Oceanografia (project RADIALES) and the Principado de Asturias FEDER (GRUPIN14-144).
Appears in Collections:
Articles; Red Sea Research Center (RSRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorÁlvarez, Een
dc.contributor.authorMoran, Xose Anxelu G.en
dc.contributor.authorLópez-Urrutia, Áen
dc.contributor.authorNogueira, Een
dc.date.accessioned2016-11-03T13:24:53Z-
dc.date.available2016-11-03T13:24:53Z-
dc.date.issued2015-12-09en
dc.identifier.citationÁlvarez E, Morán X, López-Urrutia Á, Nogueira E (2016) Size-dependent photoacclimation of the phytoplankton community in temperate shelf waters (southern Bay of Biscay). Mar Ecol Prog Ser 543: 73–87. Available: http://dx.doi.org/10.3354/meps11580.en
dc.identifier.issn0171-8630en
dc.identifier.issn1616-1599en
dc.identifier.doi10.3354/meps11580en
dc.identifier.urihttp://hdl.handle.net/10754/621783-
dc.description.abstract© Inter-Research 2016. Shelf waters of the Cantabrian Sea (southern Bay of Biscay) are productive ecosystems with a marked seasonality. We present the results from 1 yr of monthly monitoring of the phytoplankton community together with an intensive sampling carried out in 2 contrasting scenarios during the summer and autumn in a mid-shelf area. Stratification was apparent on the shelf in summer, while the water column was comparatively well mixed in autumn. The size structure of the photoautotrophic community, from pico-to micro-phytoplankton, was tightly coupled with the meteo-climatic and hydrographical conditions. Over the short term, variations in the size structure and chlorophyll content of phytoplankton cells were related to changes in the physico-chemical environment, through changes in the availability of nutrients and light. Uncoupling between the dynamics of carbon biomass and chlorophyll resulted in chlorophyll to carbon ratios dependent on body size. The slope of the size dependence of chlorophyll content increased with increasing irradiance, reflecting different photoacclimation plasticity from pico-to micro-phytoplankton. The results have important implications for the productivity and the fate of biogenic carbon in this region, since the size dependence of photosynthetic rates is directly related to the size scaling of chlorophyll content.en
dc.description.sponsorshipWe thank the captain and crew of RVs 'Francisco de Paula Navarro' and 'Jose Rioja' and all participants in the cruises for their work and dedication at sea and in the laboratory. We also thank F. Ronzon, who kindly provided data from his meteorological station in Gijon/Xixon. This work was supported by the Ministerio de Ciencia e Innovacion (project PERPLAN, 'Efecto de las perturbaciones meteorologico-hidrograficas en la estructura de la comunidad planctonica', CTM2006-04854/MAR), the Plan de Ciencia, Tecnologia e Innovacion del Gobierno del Principado de Asturias (project IMAGINA and research grant BP07-081 to E.A.), the Instituto Espanol de Oceanografia (project RADIALES) and the Principado de Asturias FEDER (GRUPIN14-144).en
dc.publisherInter-Research Science Centeren
dc.subjectCantabrian Seaen
dc.subjectChlorophyll: carbon ratioen
dc.subjectContinental shelfen
dc.subjectHydrographyen
dc.subjectPhytoplanktonen
dc.subjectSize scalingen
dc.subjectSize spectraen
dc.titleSize-dependent photoacclimation of the phytoplankton community in temperate shelf waters (southern Bay of Biscay)en
dc.typeArticleen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.identifier.journalMarine Ecology Progress Seriesen
dc.contributor.institutionInstituto Español de Oceanografía, Centro Oceanográfico de Gijón/Xixón, Asturias, Spainen
kaust.authorMoran, Xose Anxelu G.en
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