FN Archimer Export Format
PT J
TI Comparison of C and N stable isotope ratios between surface particulate organic matter and microphytoplankton in the Gulf of Lions (NW Mediterranean)
BT 
AF HARMELIN VIVIEN, M
   LOIZEAU, Veronique
   MELLON-DUVAL, Capucine
   BEKER, B
   ARLHAC, D
   BODIGUEL, Xavier
   FERRATON, Franck
   HERMAND, R
   PHILIPPON, Xavier
   SALEN PICARD, C
AS 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;
FF 1:;2:PDG-DOP-DCN-BE-LBCO;3:PDG-DOP-DCM-HMT-RHSETE;4:;5:;6:PDG-DOP-DCN-BE;7:PDG-DOP-DCM-HMT-RHSETE;8:;9:;10:;
C1 Univ Aix Marseille 2, CNRS, Ctr Oceanol Marseille, UMR 6540,Stn Marine Endoume, F-13007 Marseille, France.
   IFREMER, Ctr Brest, Dept Biogeochim & Ecotoxicol, F-29280 Plouzane, France.
   IFREMER, Ctr Rech Halieut Mediterraneenne & Trop, Lab Ressources Halieut, F-34203 Sete, France.
   Univ Aix Marseille 2, CNRS, Ctr Oceanol Marseille, UMS 2196,Stn Marine Endoume, F-13007 Marseille, France.
C2 UNIV AIX MARSEILLE, FRANCE
   IFREMER, FRANCE
   IFREMER, FRANCE
   UNIV AIX MARSEILLE, FRANCE
SI BREST
   SETE
SE PDG-DOP-DCN-BE-LBCO
   PDG-DOP-DCM-HMT-RHSETE
   PDG-DOP-DCN-BE
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 2.136
TC 102
UR https://archimer.ifremer.fr/doc/2008/publication-5919.pdf
LA English
DT Article
DE ;Seasonal variation;PON/Chl a;C/N ratio;Stable isotopes;Fluorescence maximum;Phytoplankton composition;Particulate organic matter
AB Carbon and nitrogen stable isotope ratios of particulate organic matter (POM) in surface water and 63-200 mu m-sized microphytoplankton collected at the fluorescence maximum were studied in four sites in the Gulf of Lions (NW Mediterranean), a marine area influenced by the Rhone River inputs, in May and November 2004. Some environmental (temperature, salinity) and biological (POM, Chlorophyll a and phaeopigments contents, phytoplankton biomass and composition) parameters were also analysed. Significantly different C and N isotopic signatures between surface water POM and microphytoplankton were recorded in all sites and seasons. Surface water POM presented systematically lower delta C-13 (similar to 4.2 parts per thousand) and higher delta N-15 (similar to 2.8 parts per thousand) values than those of microphytoplankton, due to a higher content of continental and detrital material. Seasonal variations were observed for all environmental and biological parameters, except salinity. Water temperature was lower in May than in November, the fluorescence maximum was located deeper and the Chlorophyll a content and the phytoplankton biomass were higher, along with low PON/Chl a ratio, corresponding to spring bloom conditions. At all sites and seasons, diatoms dominated the phytoplankton community in abundance, whereas dinoflagellate importance increased in autumn particularly in coastal sites. C and N isotopic signatures of phytoplankton did not vary with season. However, the delta N-15 of surface water POM was significantly higher in November than in May in all sites likely in relation to an increase in N-15/N-14 ratio of the Rhone River POM which influenced surface water in the Gulf of Lions. As it is important to determine true baseline values of primary producers for analysing marine food webs, this study demonstrated that C and N isotopic values of surface water POM cannot be used as phytoplankton proxy in coastal areas submitted to high river inputs.
PY 2008
PD AUG
SO Continental Shelf Research
SN 0278-4343
PU Elsevier
VL 28
IS 15
UT 000259917800004
BP 1911
EP 1919
DI 10.1016/j.csr.2008.03.002
ID 5919
ER

EF