FN Archimer Export Format PT J TI Trophic structure of vermetid reef community: High trophic diversity at small spatial scales BT AF COLOMBO, Francesca COSTA, Valentina DUBOIS, Stanislas GIANGUZZA, Paola MAZZOLA, Antonio VIZZINI, Salvatrice AS 1:1;2:1,2;3:3;4:1;5:1;6:1; FF 1:;2:;3:PDG-ODE-DYNECO-BENTHOS;4:;5:;6:; C1 Univ Palermo, Dept Earth & Marine Sci, CoNISMa, I-90123 Palermo, Italy. Univ Parma, Dept Environm Sci, I-43124 Parma, Italy. IFREMER, Lab Benth Ecol, F-29280 Plouzane, France. C2 UNIV PALERMO, ITALY UNIV PARMA, ITALY IFREMER, FRANCE SI BREST SE PDG-ODE-DYNECO-BENTHOS IN WOS Ifremer jusqu'en 2018 copubli-europe IF 1.855 TC 14 UR https://archimer.ifremer.fr/doc/00130/24103/22855.pdf LA English DT Article DE ;Dendropoma petraeum;Stable Isotope;Bayesian Mixing Model;Trophic Niche;Intertidal AB Stable isotopes were used to investigate contributions of autochthonous (i.e. benthic: epilithon and macroalgae) and allochthonous (i.e. pelagic: phytoplankton) organic matter sources to the diet of suspension-feeders, grazers and predators associated to small reef-pools (cuvettes) created by the reef-building species Dendropoma petraeum in the north-western coast of Sicily (Italy). Contributions of potential food sources were calculated using Bayesian mixing-models and integrated to a multivariate approach to highlight the diversity of C and N pathways within Dendropoma cuvettes. Both pelagic and benthic organic matter sources were exploited by benthic consumers, although clear differences were revealed in the various species depending on their feeding strategy. Three different trophic pathways were identified: one based mainly on phytoplankton, one based mainly on macroalgae and a third one mainly on epilithon. Suspension-feeders seemed to rely mainly on allochthonous organic matter sources, while grazers showed a wider diet spectrum. Predators revealed a high specialization in each of the three food chains and showed a distinct reliance on organic matter originated from benthic or pelagic sources. Stable isotopes evidenced here a marked differentiation of the trophic niche within the cuvette-associated community, which allows minimizing competition in very space-limited conditions. (C) 2012 Elsevier B.V. All rights reserved. PY 2013 PD MAR SO Journal Of Sea Research SN 1385-1101 PU Elsevier Science Bv VL 77 UT 000315837900009 BP 93 EP 99 DI 10.1016/j.seares.2012.10.005 ID 24103 ER EF