@article{fdi:010042316, title = {{T}rophic signature of coral reef fish assemblages : towards a potential indicator of ecosystem disturbance}, author = {{B}ozec, {Y}ves-{M}arie and {K}ulbicki, {M}ichel and {C}hassot, {E}. and {G}ascuel, {D}.}, editor = {}, language = {{ENG}}, abstract = {{F}ace to the increasing anthropogenic disturbances that affect coral reef ecosystems, it becomes urgent to define appropriate ecological indicators for monitoring purposes. {O}ne useful approach is to search for a simplified description of the structure of biological communities that are highly diverse and complex on coral reefs. {T}o this end, we propose to represent the trophic structure of coral reef fish assemblages by using fractional trophic levels assigned to each fish species. {F}ish abundance trophic spectra (i.e., the distributions of fish abundance per trophic level) were established for the fringing reefs of two bays located in the city of {N}oumea ({N}ew {C}aledonia). {T}he comparison of these trophic spectra revealed a similar trophic structure in the two bays, in spite of contrasted levels of fish abundance due to habitat damages. {T}he embayment degree was characterized by changes in the fish trophic structure, reflecting a decreasing influence of urban and industrial wastes discharged in the bottom of the bays. {T}his case of study shows the interest of using fractional trophic levels for the description of highly diverse biological communities. {T}he trophic level-based approach offers new prospects in the search for ecological indicators, by characterizing the structure of biological communities by trophic signatures which testify to the disturbance level affecting their environment.}, keywords = {fish community ; trophic level ; trophic structure ; ecological indicator ; anthropogenic disturbances}, booktitle = {}, journal = {{A}quatic {L}iving {R}esources}, volume = {18}, numero = {2}, pages = {103--109}, ISSN = {0990-7440}, year = {2005}, DOI = {10.1051/alr:2005013}, URL = {https://www.documentation.ird.fr/hor/fdi:010042316}, }