Data/hora: 01/06/2024 10:51:04

Provedor de dados: | 5
País: | France
Título: | Etat de santé des habitats et peuplements de poissons des atolls d’Entrecasteaux, zone inscrite au Patrimoine Mondial de l’Humanité et Parc naturel de la mer de Corail. Evaluation initiale par stations vidéo rotatives STAVIRO
Autores: | Schohn, Thomas; Pelletier, Dominique; Carpentier, Liliane.
Data: | 2017-08-24
Ano: | 2017
Palavras-chave: | Biodiversité; Ichtyofaune; Habitat; Vidéo sous-marine; STAVIRO; Evaluation; Suivi; Aire Marine Protégée; Patrimoine mondial; Parc de la mer de Corail; Ecosystème corallien; Nouvelle-Calédonie; Indicateur; Tableau de bord; Cartes; Sextant; PAMPA; Biodiversity; Fish; Habitat; Underwater video; STAVIRO; Monitoring and assessment; Marine Protected Area: Coral Sea Natural Park; World Heritage; Coral reefs; New Caledonia; Indicator; Dashboard; Map; Sextant; PAMPA.
Resumo: | The AMBIO project conducted a comprehensive video-based baseline assessment of coral reef fish communities and associated habitats in the New Caledonian lagoons. Observation relies on remote unbaited underwater video, using the STAVIRO rotating technique (Pelletier et al. 2012).  This survey was conducted in 2015 in Entrecasteaux Reefs, both located within the Coral Sea Natural Park, and part of World Heritage site. 109 STAVIRO were validated in 9 days, covering the reefs and geomorphological units in the area. Images were analyzed to characterize the habitat surrounding each station, and fishes based on a list of 565 species (Pelletier et al. 2016).  28 indicators were computed and represented on maps (Sextant server). Indicators were analyzed using the PAMPA computing tool. Outcomes were organized in dashboards per management objective (biodiversity conservation and fisheries management).  190 fish species (and one snake species), belonging to 32 families were observed. Surgeonfish and wrasses were observed on more than 95% of stations. Parrotfish, snappers, butterflyfish and groupers were observed on more than 77% of stations.  Coral health status is good with high living coral covers on outer slopes and lagoon patches, while branch coral was found in internal slopes. Butterflyfish diversity is high, but not their abundance.  Fish communities are exceptionally diversified in all habitats. Abundance is good, but medium in the Living Coral habitat. Groupers are frequent and abundant. Fish community status appears the best among all surveyed sites, except for parrotfish and butterlfyfish.  Sharks are very frequent, as well as jacks. Giant wrasse is regularly observed.  Resources are rather abundant (commercial, fished and spearfished species), but on sandy bottoms. Jacks and spangled emperor are frequent. Favorite targets of surgeonfish and coral trout are equally or less frequent than on other sites.
Tipo: | Text
Idioma: | Francês

Identificador:

http://archimer.ifremer.fr/doc/00406/51760/52357.pdf

http://archimer.ifremer.fr/doc/00406/51760/52664.pdf

http://archimer.ifremer.fr/doc/00406/51760/

Formato: | application/pdf

Fonte:

2017 Ifremer

info:eu-repo/semantics/openAccess

restricted use