Horizon / Plein textes La base de ressources documentaires de l'IRD

IRD

 

Publications des scientifiques de l'IRD

Adjeroud Mehdi, Kayal M., Peignon Christophe, Juncker M., Mills S. C., Beldade R., Dumas Pascal. (2018). Ephemeral and localized outbreaks of the coral predator Acanthaster cf. solaris in the southwestern lagoon of New Caledonia. Zoological Studies, 57, 4. ISSN 1021-5506

Accès réservé (Intranet IRD) Demander le PDF

Lien direct chez l'éditeur doi:10.6620/zs.2018.57-04

Titre
Ephemeral and localized outbreaks of the coral predator Acanthaster cf. solaris in the southwestern lagoon of New Caledonia
Année de publication2018
Type de documentArticle référencé dans le Web of Science WOS:000425372700001
AuteursAdjeroud Mehdi, Kayal M., Peignon Christophe, Juncker M., Mills S. C., Beldade R., Dumas Pascal.
SourceZoological Studies, 2018, 57, p. 4. p. 4 ISSN 1021-5506
RésuméOutbreaks of the coral predator Acanthaster spp., the crown-of-thorns seastar (COTS), cause major coral declines across the Indo-Pacific. However, the processes surrounding the initiation and propagation of COTS outbreaks are still unclear. We observed COTS outbreak abundances on several mid-shelf and inner-barrier reefs in the southern section of the New Caledonian lagoon, a multi-location initiation event that we expected to precede a broader region-wide disturbance. However, reef monitoring over 3 years revealed the highly localized and ephemeral character of these outbreaks. Outbreaks that were observed at four reef locations at the beginning of the survey simply faded away, without any specific management actions such as culling efforts. We also found no distinct reef biotope on which COTS outbreaks originated, although mid-shelf and inner-shelf barrier reefs seem to be favoured. New Caledonia has been exempted from to widespread regional COTS outbreaks, which is surprising given its proximity to the Australian Great Barrier Reef - a reef complex particularly vulnerable to COTS - and Vanuatu - where large-scale outbreaks were recorded during the same period. The availability of coral prey is probably not a limiting factor for the propagation of COTS outbreaks on New Caledonian reefs, given the high abundance and diversity of coral assemblages. Our findings reveal that localized and ephemeral COTS outbreaks can be naturally contained and do not necessarily result in widespread disturbances.
Plan de classementLimnologie biologique / Océanographie biologique [034] ; Ecologie, systèmes aquatiques [036]
Descr. géo.NOUVELLE CALEDONIE ; PACIFIQUE
LocalisationFonds IRD [F B010072365]
Identifiant IRDfdi:010072365
Lien permanenthttp://www.documentation.ird.fr/hor/fdi:010072365

Export des données

Disponibilité des documents

Télechargment fichier PDF téléchargeable

Lien sur le Web lien chez l'éditeur

Accès réservé en accès réservé

HAL en libre accès sur HAL


Accès aux documents originaux :

Le FDI est labellisé CollEx

Accès direct

Bureau du chercheur

Site de la documentation

Espace intranet IST (accès réservé)

Suivi des publications IRD (accès réservé)

Mentions légales

Services Horizon

Poser une question

Consulter l'aide en ligne

Déposer une publication (accès réservé)

S'abonner au flux RSS

Voir les tableaux chronologiques et thématiques

Centres de documentation

Bondy

Montpellier (centre IRD)

Montpellier (MSE)

Cayenne

Nouméa

Papeete

Abidjan

Dakar

Niamey

Ouagadougou

Tunis

La Paz

Quito