Document of bibliographic reference 102230

BibliographicReference record

Type
Bibliographic resource
Type of document
Journal article
BibLvlCode
AS
Title
Picophytoplankton diversity and photoacclimation in the Strait of Sicily (Mediterranean Sea) in summer. I. Mesoscale variations
Abstract
Phytoplankton dynamics were investigated at the mesoscale in the northern part of the Strait of Sicily in July-August 1997 on fractionated samples (<3 and >3 μm) using HPLC pigment analysis and flow cytometry. Distribution, diversity and photoacclimation varied within the different water masses and features present at the time of sampling, including a surface filament of deep, cold water. Picophytoplankton (<3 μm) accounted for 80% of total chlorophyll on average, and was numerically dominated by cyanobacteria of the genus Prochlorococcus, with an average concentration of 5.2 × 104 cells ml-1. The biomass and pigment diversity of picophytoplankton was higher in the deep chlorophyll maximum (DCM) and was related to hydrological and biological features, whereas larger phytoplankton (>3 μm) appeared to respond to different cues. Chlorophyll pigment content per cell of Synechococcus spp., Prochlorococcus spp. or picoeukaryotes was estimated by coupling pigment data with flow cytometric counts. In Prochlorococcus spp., we found an average of 0.44 and 1.56 fg divinyl-chlorophyll a (dvchl a) cell-1 in surface and DCM layers, respectively. In contrast, chl a content in the picoeukaryote group ranged between 17 and 168 fg chl a cell-1, depending upon depth and water mass, which suggested strong photoacclimation and photoadaptation with depth. The relative contribution of each eukaryote pigment to one size class or the other changed through the water column, and reflected size segregation within single taxonomic groups.
WebOfScience code
https://www.webofscience.com/wos/woscc/full-record/WOS:000241076000003
Bibliographic citation
Brunet, C.; Casotti, R.; Vantrepotte, V.; Corato, F.; Conversano, F. (2006). Picophytoplankton diversity and photoacclimation in the Strait of Sicily (Mediterranean Sea) in summer. I. Mesoscale variations. Aquat. Microb. Ecol. 44(2): 127-141. http://dx.doi.org/10.3354/ame044127
Topic
Marine
Is peer reviewed
true
Access rights
open access
Is accessible for free
true

Authors

author
Name
Christophe Brunet
author
author
author
Name
Federico Corato
author
Name
Fabio Conversano

Links

referenced creativework
type
DOI
accessURL
http://dx.doi.org/10.3354/ame044127

thesaurus terms

term
Biodiversity (term code: 9471 - defined in term set: ASFA Thesaurus List)
Chlorophylls (term code: 1537 - defined in term set: ASFA Thesaurus List)
Flow cytometry (term code: 9512 - defined in term set: ASFA Thesaurus List)
HPLC (term code: 9531 - defined in term set: ASFA Thesaurus List)
Mesoscale features (term code: 5132 - defined in term set: ASFA Thesaurus List)
Pigments (term code: 6214 - defined in term set: ASFA Thesaurus List)

Other terms

other terms associated with this publication
Picophytoplankton

geographic terms

geographic terms associated with this publication
MED
MED, Italy, Sicily

Document metadata

date created
2006-09-19
date modified
2017-02-06