FN Archimer Export Format
PT J
TI Trophic relationships in a deep Mediterranean cold-water coral bank (Santa Maria di Leuca, Ionian Sea)
BT 
AF CARLIER, A.
   LE GUILLOUX, E.
   OLU, Karine
   SARRAZIN, Jozee
   MASTROTOTARO, F.
   TAVIANI, M.
   CLAVIER, J.
AS 1:1;2:2;3:2;4:2;5:3;6:4;7:1;
FF 1:;2:;3:;4:;5:;6:;7:;
C1 Inst Univ Europeen Mer, CNRS UBO IRD, LEMAR, UMR 6539, F-29280 Plouzane, France.
   IFREMER, Ctr Brest, DEEP LEP, F-29280 Plouzane, France.
   Univ Bari, Dipartimento Biol Anim & Ambientale, ULR CoNISMa, I-70125 Bari, Italy.
   CNR, ISMAR, I-40129 Bologna, Italy.
C2 UBO, FRANCE
   IFREMER, FRANCE
   UNIV BARI ALDO MORO, ITALY
   CNR, ITALY
SI BREST
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-europe
   copubli-univ-france
IF 2.519
TC 90
TU Centre national de la recherche scientifique
   Institut de recherche pour le développement
   Institut français de recherche pour l'exploitation de la mer
   Université de Bretagne Occidentale
UR https://archimer.ifremer.fr/doc/2009/publication-7450.pdf
LA English
DT Article
CR MEDECO
BO Unknown
DE ;Particulate organic matter;Zooplankton;Stable isotopes;Food web;Mediterranean Sea;Benthic community;Cold water corals
AB Cold-water corals (CWC) are frequently reported from deep sites with locally accelerated currents that enhance seabed food particle supply. Moreover, zooplankton likely account for ecologically important prey items, but their contribution to CWC diet remains unquantified. We investigated the benthic food web structure of the recently discovered Santa Maria di Leuca (SML) CWC province (300 to 1100 m depth) located in the oligotrophic northern Ionian Sea. We analyzed stable isotopes (delta C-13 and delta N-15) of the main consumers (including ubiquitous CWC species) exhibiting different feeding strategies, zooplankton, suspended particulate organic matter (POM) and sedimented organic matter (SOM). Zooplankton and POM were collected 3 m above the coral colonies in order to assess their relative contributions to CWC diet. The delta N-15 of the scleractinians Desmophyllum dianthus, Madrepora oculata and Lophelia pertusa (8 to 9 parts per thousand) and the gorgonian Paramuricea cf. macrospina (9 to 10 parts per thousand) were consistent with a diet mainly composed of zooplankton (6 to 7 parts per thousand). The antipatharian Leiopathes glaberrima was more N-15-depleted (7 to 8 parts per thousand) than other cnidarians, suggesting a lower contribution of zooplankton to its diet. Our delta C-13 data clearly indicate that the benthic food web of SML is exclusively fuelled by carbon of phytoplanktonic origin. Nevertheless, consumers feeding at the water-sediment interface were more C-13-enriched than consumers feeding above the bottom (i.e. living corals and their epifauna). This pattern suggests that carbon is assimilated via 2 trophic pathways: relatively fresh phytoplanktonic production for C-13-depleted consumers and more decayed organic matter for C-13-enriched consumers. When the VC values of consumers were corrected for the influence of lipids (which are significantly C-13-depleted relative to other tissue components), our conclusions remained unchanged, except in the case of L. glaberrima which could assimilate a mixture of zooplankton and resuspended decayed organic matter.
PY 2009
PD DEC
SO Marine Ecology Progress Series
SN 0171-8630
PU Inter-Research
VL 397
UT 000273968400013
BP 125
EP 137
DI 10.3354/meps08361
ID 7450
ER

EF