|Author(s)||Jac Cyrielle1, Dupont Priscilla1, 2, Gaboriau Matthias3, Mercky Yann1, 2, Pelletier Dominique4, Roos David3, Sucre Elliott1, 2, Claverie Thomas1, 2|
|Affiliation(s)||1 : Marine Biodiversity Exploitation and Conservation (MARBEC) – Montpellier, France
2 : Centre Universitaire de Mayotte (CUFR), Mayotte
3 : Ifremer, Délégation Océan Indien (DOI) – La Réunion, France
4 : Ifremer, Laboratoire Ecologie et Modèles pour l’Halieutique (EMH) – Nantes, France
|Meeting||WIOMSA 2019 - 11th scientific symposium "People, Coasts and Oceans: Opportunities for a changing future". 1st – 6th July 2019, Mauritius|
In days of increasingly threatened marine tropical ecosystems, it is important to improve knowledge on understudied but taxonomically rich habitats. If fish assemblages from barrier and fringing reefs are generally well studied, patch reefs are much less known. The objective of the present study (part of the EPICURE project) was to better understand taxonomic and functional specificity of patch reefs fish assemblages compared to the well-studied subtidal reef flat and outer slope habitats. Unbaited rotating video systems (STAVIRO) were used to quantify fish abundance on two sitesfrom the northern Mozambic channel (Mayotte Iris bank and Geyser bank). Taxonomic and functional diversity metrics were used to compare assemblages among habitats. None of the species diversity indices considered (Species richness, Shannon, Simpson and Pielou indices) showed significant differences among habitats, while most of functional richness indices showed differences (richness, specialization and originality). Overall, assemblages from patch reefs have more specialist and functionally original species than subtidal reef flat and outer slope. This work showed original assemblages on patch reefs and suggest that these habitats could be of particular interest for further investigation.
Jac Cyrielle, Dupont Priscilla, Gaboriau Matthias, Mercky Yann, Pelletier Dominique, Roos David, Sucre Elliott, Claverie Thomas (2019). Patch reef: a functional hotspot of tropical fishes. WIOMSA 2019 - 11th scientific symposium "People, Coasts and Oceans: Opportunities for a changing future". 1st – 6th July 2019, Mauritius. https://archimer.ifremer.fr/doc/00614/72586/