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Title

Phytoplankton biovolume is independent from the slope of the size spectrum in the oligotrophic Atlantic Ocean

AuthorsMoreno-Ostos, Enrique; Blanco, José María; Agustí, Susana ; Lubián, Luis M. ; Rodríguez, Valeriano; Palomino, Roberto L.; Llabrés, Moira ; Rodríguez, Jaime
KeywordsAtlantic Ocean
Biovolume
Malaspina Circunnavegation Expedition
Phytoplankton
Size-abundance spectrum
Issue Date6-Aug-2015
PublisherElsevier
CitationJournal of Marine Systems 152: 42-50 (2015)
Abstract© 2015 Elsevier B.V. Modelling the size-abundance spectrum of phytoplankton has proven to be a very useful tool for the analysis of physical-biological coupling and the vertical flux of carbon in oceanic ecosystems at different scales. A frequent observation relates high phytoplankton biovolume in productive regions with flatter spectrum slope and the opposite in oligotrophic ecosystems. Rather than this, the relationship between high biovolume phytoplankton assemblages and flatter size-abundance spectra does not correspond with measurements of the phytoplankton community in the Atlantic Ocean open waters. As part of the Malaspina Circunnavegation Expedition, sixty seven sampling stations within the Atlantic Ocean covering six oceanographic provinces, at different seasons, produced a complete set of phytoplankton size-spectra whose slope and biovolume did not show any obvious interrelation. In these oligotrophic sites, small (procaryotes) and medium-size (nanoplankton) cells are responsible for the most part of biovolume, and their response to environmental conditions does not apply to changes in the size-abundance spectrum slope as expected in richer, large-cell dominated ecosystems.
Publisher version (URL)http://dx.doi.org/10.1016/j.jmarsys.2015.07.008
URIhttp://hdl.handle.net/10261/126096
DOI10.1016/j.jmarsys.2015.07.008
Identifiersdoi: 10.1016/j.jmarsys.2015.07.008
issn: 0924-7963
Appears in Collections:(IMEDEA) Artículos
(ICMAN) Artículos
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