FN Archimer Export Format
PT J
TI Sources of organic matter in an atypical phytoplankton rich coral ecosystem, Marquesas Islands: composition and properties
BT 
AF Fey, P.
   Parravicini, V.
   Lebreton, B.
   Meziane, T.
   Galzin, R.
   Zubia, M.
   Bӑnaru, D.
   Letourneur, Y.
AS 1:1;2:2;3:3;4:4;5:2;6:5;7:6;8:1;
FF 1:;2:;3:;4:;5:;6:;7:;8:;
C1 UMR Entropie (UR/IRD/CNRS/IFREMER/UNC), LabEx-CORAIL, Université de La Nouvelle-Calédonie, BP R4, 98851, Nouméa cedex, New Caledonia
   CRIOBE, PSL Research University, USR 3278 EPHE-CNRS-UPVD, LabEx-CORAIL, Université de Perpignan, 66860, Perpignan cedex, France
   UMR 7266 Littoral, Environnement Et Sociétés (CNRS-Université de La Rochelle), Institut du Littoral Et de L’environnement, 2 rue Olympe de Gouges, 17000, La Rochelle, France
   UMR BOREA 7208, MNHN/CNRS/UPMC/IRD, 61 rue Buffon, 5 CP 53, 75231, Paris cedex, France
   University of French Polynesia, UMR EIO, LabEx-CORAIL, BP 6570, 98702, Faa’a, Tahiti, French Polynesia
   CNRS INSU, IRD, Mediterranean Institute of Oceanography, Aix Marseille Université, Univ. Toulon, UM 110, 13288, Marseille, France
C2 UNIV NOUVELLE CALEDONIE, FRANCE
   UNIV PERPIGNAN, FRANCE
   UNIV LA ROCHELLE, FRANCE
   MNHN, FRANCE
   UNIV POLYNESIE FRANCAISE, FRANCE
   CNRS, FRANCE
UM EIO
   ENTROPIE
IN WOS Cotutelle UMR
   copubli-france
   copubli-univ-france
IF 2.573
TC 3
UR https://archimer.ifremer.fr/doc/00632/74442/74494.pdf
LA English
DT Article
AB The purpose of this work is to characterize several potential sources of organic matter (OM) in the Marquesas Islands, French Polynesia, and to understand how these sources contribute to OM pools. Stable isotope (δ13C and δ15N) and fatty acid (FA) compositions of OM potential sources (algal turf, benthic macroalgae, detrital terrestrial plants (DTP), phytoplankton) and OM pools (sediment (SOM) and particulate organic matter (POM)) were studied in coastal areas in Nuku Hiva Island. Isotope compositions of marine POM (δ13C = − 22.5 ± 0.8 ‰; δ15N = 12.1 ± 1.1 ‰) and SOM (δ13C = − 19.1 ± 0.9 ‰; δ15N = 14.4 ± 0.5 ‰) highlighted that OM sources at the base of the local food web had unusually high δ15N values. Potential FA markers of diatoms and/or cyanobacteria (20:5ω3 and 16:1ω7) were found in these two OM pools. In addition, coastal SOM also displayed FA markers of bacteria, macroalgae and terrestrial plants. For marine POM, potential macroalgae FA markers were recorded (18:2ω6 and 16:2ω4). The stable isotope mixing model highlighted the major contribution of phytoplankton to the coastal SOM (62%), followed by benthic macroalgae (32%), whereas marine POM was mainly composed of a mixture of algal turf and phytoplankton in similar averaged proportions (38%) but presenting wide variations. Our results as a whole strongly suggest that pelagic-benthic coupled processes drive the characteristics and properties of OM sources. 
PY 2020
PD JUL
SO Marine Biology
SN 0025-3162
PU Springer Science and Business Media LLC
VL 167
IS 7
UT 000540069000005
DI 10.1007/s00227-020-03703-z
ID 74442
ER

EF