Data/hora: 12/06/2024 14:29:32

Provedor de dados: | Institutional Archive of Ifreme (ArchiMer)
País: | France
Título: | Etat de santé des habitats et peuplements de poissons de la Réserve Merlet, zone inscrite au Patrimoine Mondial - Evaluation initiale par stations vidéo rotatives STAVIRO
Autores: | Bockel, Thomas; Pelletier, Dominique; Carpentier, Liliane; Schohn, Thomas.
Data: | 2017-05-18
Ano: | 2017
Palavras-chave: | Biodiversité Ichtyofaune Habitat Vidéo sous-marine STAVIRO Evaluation Suivi Réserve Merlet AMP; Patrimoine mondial; Ecosystème corallien Nouvelle-Calédonie Indicateur Tableau de bord Serveur de cartes Sextant PAMPA Biodiversity Fish Habitat Underwater video STAVIRO Monitoring and assessment Merlet Marine Reserve MPA; World Heritage Coral reefs New Caledonia Indicator Dashboard Map server Sextant PAMPA.
Resumo: | Conducted within the AMBIO project, this work deals with coral reef fish communities and associated habitats, in the New Caledonian lagoons. It relies on remote unbaited underwater video observations, using the STAVIRO rotating technique. The field work was realized in 2013 in and around the Merlet Marine Reserve, in the south of New-Caledonia, and located within the “Grand Lagon Sud” world heritage area. The sampling design covers the entire area, and was stratified according to reef type (outer slope, reef flat, reef shallow terrace, lagoon, and fringing reef). 162 stations were validated within 6 days. They were analyzed to characterize the habitat surrounding each station, and fish communities, based on a list of 429 fish species (cf. AMBIO/A/1). 28 indicators were computed and mapped (maps available on a Sextant server). Indicators were analyzed using the PAMPA computing tool. Outcomes were organized in a dashboard for each management objective (biodiversity conservation and fisheries management). 165 fish species (and one turtle species), belonging to 20 families were observed. Two families were observed on more than 80% of stations: surgeonfish and parrotfish. Four other families were observed on 50% to 80% of stations: butterflyfish, wrasses, groupers and goatfish. Living coral habitat display a good ecological status, in particular on external slopes (on average over 35% on this habitat). A large diversity (26 species) and abundance of butterflyfish was observed. 2 shark species, 1 turtle species and 3 ray species were encountered, as well as giant wrasse. Fish communities display a good ecological status, in particular on external slopes in the Living Coral habitat, consistently with an ancient and strong protection. Emblematic species were regularly observed. Most fisheries-related metrics indicate relatively abundant resources, with higher occurrences abundances, and a greater proportion of large individuals. These results indicate lower anthropogenic pressures, especially fishing pressure,than at other coastal sites.
Tipo: | Text
Idioma: | Francês

Identificador:

http://archimer.ifremer.fr/doc/00406/51756/52353.pdf

http://archimer.ifremer.fr/doc/00406/51756/52449.pdf

DOI:10.13155/51756

http://archimer.ifremer.fr/doc/00406/51756/

Formato: | application/pdf

Fonte:

2017 Ifremer

info:eu-repo/semantics/openAccess

restricted use