Publications des scientifiques de l'IRD

Ricart A. M., Rodriguez-Zaragoza F. A., Gonzalez-Salas C., Ortiz M., Cupul-Magana A. L., Adjeroud Mehdi. (2016). Coral reef fish assemblages at Clipperton Atoll (Eastern Tropical Pacific) and their relationship with coral cover. Scientia Marina, 80 (4), p. 479-486. ISSN 0214-8358.

Titre du document
Coral reef fish assemblages at Clipperton Atoll (Eastern Tropical Pacific) and their relationship with coral cover
Année de publication
2016
Type de document
Article référencé dans le Web of Science WOS:000388738200005
Auteurs
Ricart A. M., Rodriguez-Zaragoza F. A., Gonzalez-Salas C., Ortiz M., Cupul-Magana A. L., Adjeroud Mehdi
Source
Scientia Marina, 2016, 80 (4), p. 479-486 ISSN 0214-8358
Clipperton Atoll, one of the most isolated coral reefs worldwide, is of great scientific interest due to its geomorphology and high levels of endemism. This study explored the reef fish assemblage structure of Clipperton Atoll and its relationship with live coral cover. Nine stations were sampled at three sites and three depths (6, 12 and 20 m) around the reef, measuring fish species richness and biomass and hermatypic coral cover (at genus level). We evaluated variation in species richness, biomass and diversity of fish assemblages among sites and depths, as well as the relationship between the entire fish assemblage composition and live coral cover. The results showed that species richness and biomass were similar among sites, but differed across depths, increasing with depth. In contrast, diversity differed among sites but not among depths. Multivariate analyses indicated that fish assemblage composition differed among sites and depths in relation to changes in cover of coral of the genera Pocillopora, Porites, Pavona and Leptoseris, which dominate at different depths. The results showed that fish species richness and diversity were low at Clipperton Atoll and that, in isolated coral reefs with a low habitat heterogeneity and low human disturbance, live coral cover has a significant influence on the spatial variation of the reef fish assemblages. This study highlights the importance of coral habitat structure in shaping coral reef fish assemblages.
Plan de classement
Ecologie, systèmes aquatiques [036]
Description Géographique
PACIFIQUE ; ZONE TROPICALE ; CLIPPERTON
Localisation
Fonds IRD [F B010068725]
Identifiant IRD
fdi:010068725
Contact