Le Bourg B. auteur aut IRD Letourneur Y. auteur aut IRD Banaru D. auteur aut IRD Blanchot Jean auteur aut IRD Chevalier Cristèle auteur aut IRD Mou-Tham Gérard auteur aut IRD Lebreton B. auteur aut IRD Pagano Marc auteur aut IRD text journalArticle eng text/pdf born digital access Stable isotope compositions were studied in particulate organic matter (POM), zooplankton and different trophic groups of teleosts to compare food chains based on plankton at two sites (lagoon and outer slope) in a New Caledonian coral reef. For each trophic compartment, delta C-13 values were always lower in the outer slope than in the lagoon. This result may be explained by potential differences in POM composition between the two environments, suggesting that the two food chains are based on different primary sources of carbon. In contrast, delta N-15 values did not vary between the lagoon and the outer slope, indicating that these two food chains presented similar length and trophic levels, despite being distinguishable. specialized barrier reef particulate organic matter zooplankton reef teleosts stable isotopes Pacific Ocean PACIFIQUE NOUVELLE CALEDONIE 036 98 7 1589-1597 2018 0025-3154 https://www.documentation.ird.fr/hor/fdi:010074142 10.1017/s0025315417001370 0025-3154 [F B010074142] https://www.documentation.ird.fr/hor/fdi:010074142 https://www.documentation.ird.fr/intranet/publi/2018/11/010074142.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2018-12-06 2023-07-11 fdi:010074142 fre