Data/hora: 10/06/2024 18:28:08

Provedor de dados: | 5
País: | France
Título: | Etat de santé des habitats et peuplements de poissons de la Corne Sud, zone inscrite au Patrimoine Mondial de l’Humanité - Evaluation initiale par stations vidéo rotatives STAVIRO
Autores: | Bockel, Thomas; Schohn, Thomas; Pelletier, Dominique; Carpentier, Liliane.
Data: | 2017-05-18
Ano: | 2017
Palavras-chave: | Biodiversité Ichtyofaune Habitat Vidéo sous-marine STAVIRO Evaluation Suivi Patrimoine mondial; Ecosystème corallien Nouvelle-Calédonie Indicateur Tableau de bord Serveur de cartes Sextant PAMPA Biodiversity Fish Habitat Underwater video STAVIRO Monitoring and assessment World Heritage Coral reefs New Caledonia Indicator Dashboard Map server 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. The survey relies on remote unbaited underwater video observations, using the STAVIRO rotating technique. The present study deals with the Corne Sud area, in the south of New-Caledonia, and located within the “Grand Lagon Sud” World Heritage Property. The survey design covers the entire area. 155 stations were validated within 9 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). 27 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). 170 fish species (and one turtle species), belonging to 23 families were observed. Surgeonfish and parrotfish were observed on 95% of the stations. Wrasses, butterflyfish, goatfish and groupers were observed on 50% to 80% of the stations. Live coral habitat was dominant (almost 60% of stations). Coral cover status was very good on the external slope, good on fringing reefs. Branch coral cover was high in sheltered locations, islet fringing reefs and coral patches. Butterflyfish diversity was very high (26 species). Fish communities are among the most diversified in New Caledonia, particularly on barrier reef and lagoon coral patches. Fish abundance is heterogenous, high on the barrier reef and coral patches, and medium on islet fringing reefs. Turtles, sharks, rays and giant wrasse are regularly observed on their favorite habitats. Ressource status is good for fished species and species targeted by spearfishing and line. In particular, blue spine unicorn, coral trout and “picot kanak” (Acanthurus blochii, dussumieri and nigricauda) are both more frequent and more abundant than in the other sites studied.
Tipo: | Text
Idioma: | Francês

Identificador:

http://archimer.ifremer.fr/doc/00406/51758/52355.pdf

http://archimer.ifremer.fr/doc/00406/51758/52448.pdf

DOI:10.13155/51758

http://archimer.ifremer.fr/doc/00406/51758/

Formato: | application/pdf

Fonte:

2017 Ifremer

info:eu-repo/semantics/openAccess

restricted use