Distribution of phytoplankton groups within the deep chlorophyll maximum

Handle URI:
http://hdl.handle.net/10754/623759
Title:
Distribution of phytoplankton groups within the deep chlorophyll maximum
Authors:
Latasa, Mikel ( 0000-0002-8202-0923 ) ; Cabello, Ana María; Moran, Xose Anxelu G. ( 0000-0002-9823-5339 ) ; Massana, Ramon; Scharek, Renate
Abstract:
The fine vertical distribution of phytoplankton groups within the deep chlorophyll maximum (DCM) was studied in the NE Atlantic during summer stratification. A simple but unconventional sampling strategy allowed examining the vertical structure with ca. 2 m resolution. The distribution of Prochlorococcus, Synechococcus, chlorophytes, pelagophytes, small prymnesiophytes, coccolithophores, diatoms, and dinoflagellates was investigated with a combination of pigment-markers, flow cytometry and optical and FISH microscopy. All groups presented minimum abundances at the surface and a maximum in the DCM layer. The cell distribution was not vertically symmetrical around the DCM peak and cells tended to accumulate in the upper part of the DCM layer. The more symmetrical distribution of chlorophyll than cells around the DCM peak was due to the increase of pigment per cell with depth. We found a vertical alignment of phytoplankton groups within the DCM layer indicating preferences for different ecological niches in a layer with strong gradients of light and nutrients. Prochlorococcus occupied the shallowest and diatoms the deepest layers. Dinoflagellates, Synechococcus and small prymnesiophytes preferred shallow DCM layers, and coccolithophores, chlorophytes and pelagophytes showed a preference for deep layers. Cell size within groups changed with depth in a pattern related to their mean size: the cell volume of the smallest group increased the most with depth while the cell volume of the largest group decreased the most. The vertical alignment of phytoplankton groups confirms that the DCM is not a homogeneous entity and indicates groups’ preferences for different ecological niches within this layer.
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division; Red Sea Research Center (RSRC)
Citation:
Latasa M, Cabello AM, Morán XAG, Massana R, Scharek R (2016) Distribution of phytoplankton groups within the deep chlorophyll maximum. Limnology and Oceanography 62: 665–685. Available: http://dx.doi.org/10.1002/lno.10452.
Publisher:
Wiley-Blackwell
Journal:
Limnology and Oceanography
Issue Date:
1-Nov-2016
DOI:
10.1002/lno.10452
Type:
Article
ISSN:
0024-3590
Sponsors:
We thank L. Díaz and C. Cabeza for their technical assistance with flow cytometry and HPLC pigment analyses, and E. Fernández-Guallart for her collaboration in sampling tasks. C. González-Pola provided the hydrographical data. We are grateful to F. Sánchez for inviting us to participate in the INDEMARES 0710 cruises and chief scientists, colleagues and crew for their collaboration. This study has been financed by projects FAMOSO (CTM2008-062621-C03/MAR, Ministerio de Economia y Competitividad, Spanish Government) and GIDEP (GRUPIN14-144, Principado de Asturias). A. M. Cabello was supported by a Spanish FPI grant (BES-2009-0277194). Two anonymous reviewers provided valuable comments.
Additional Links:
http://onlinelibrary.wiley.com/doi/10.1002/lno.10452/full
Appears in Collections:
Articles; Red Sea Research Center (RSRC); Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorLatasa, Mikelen
dc.contributor.authorCabello, Ana Maríaen
dc.contributor.authorMoran, Xose Anxelu G.en
dc.contributor.authorMassana, Ramonen
dc.contributor.authorScharek, Renateen
dc.date.accessioned2017-05-31T10:09:30Z-
dc.date.available2017-05-31T10:09:30Z-
dc.date.issued2016-11-01en
dc.identifier.citationLatasa M, Cabello AM, Morán XAG, Massana R, Scharek R (2016) Distribution of phytoplankton groups within the deep chlorophyll maximum. Limnology and Oceanography 62: 665–685. Available: http://dx.doi.org/10.1002/lno.10452.en
dc.identifier.issn0024-3590en
dc.identifier.doi10.1002/lno.10452en
dc.identifier.urihttp://hdl.handle.net/10754/623759-
dc.description.abstractThe fine vertical distribution of phytoplankton groups within the deep chlorophyll maximum (DCM) was studied in the NE Atlantic during summer stratification. A simple but unconventional sampling strategy allowed examining the vertical structure with ca. 2 m resolution. The distribution of Prochlorococcus, Synechococcus, chlorophytes, pelagophytes, small prymnesiophytes, coccolithophores, diatoms, and dinoflagellates was investigated with a combination of pigment-markers, flow cytometry and optical and FISH microscopy. All groups presented minimum abundances at the surface and a maximum in the DCM layer. The cell distribution was not vertically symmetrical around the DCM peak and cells tended to accumulate in the upper part of the DCM layer. The more symmetrical distribution of chlorophyll than cells around the DCM peak was due to the increase of pigment per cell with depth. We found a vertical alignment of phytoplankton groups within the DCM layer indicating preferences for different ecological niches in a layer with strong gradients of light and nutrients. Prochlorococcus occupied the shallowest and diatoms the deepest layers. Dinoflagellates, Synechococcus and small prymnesiophytes preferred shallow DCM layers, and coccolithophores, chlorophytes and pelagophytes showed a preference for deep layers. Cell size within groups changed with depth in a pattern related to their mean size: the cell volume of the smallest group increased the most with depth while the cell volume of the largest group decreased the most. The vertical alignment of phytoplankton groups confirms that the DCM is not a homogeneous entity and indicates groups’ preferences for different ecological niches within this layer.en
dc.description.sponsorshipWe thank L. Díaz and C. Cabeza for their technical assistance with flow cytometry and HPLC pigment analyses, and E. Fernández-Guallart for her collaboration in sampling tasks. C. González-Pola provided the hydrographical data. We are grateful to F. Sánchez for inviting us to participate in the INDEMARES 0710 cruises and chief scientists, colleagues and crew for their collaboration. This study has been financed by projects FAMOSO (CTM2008-062621-C03/MAR, Ministerio de Economia y Competitividad, Spanish Government) and GIDEP (GRUPIN14-144, Principado de Asturias). A. M. Cabello was supported by a Spanish FPI grant (BES-2009-0277194). Two anonymous reviewers provided valuable comments.en
dc.publisherWiley-Blackwellen
dc.relation.urlhttp://onlinelibrary.wiley.com/doi/10.1002/lno.10452/fullen
dc.rightsThis is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.en
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.titleDistribution of phytoplankton groups within the deep chlorophyll maximumen
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.identifier.journalLimnology and Oceanographyen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionCentro Oceanográfico de Gijón/Xixón; Instituto Español de Oceanografía (IEO); Gijón/Xixón Asturias Spainen
dc.contributor.institutionInstitut de Ciències del Mar (CSIC); Barcelona Catalonia Spainen
kaust.authorMoran, Xose Anxelu G.en
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