Open WL Archief (OWA)

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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.

Basisinformatie over ‘Open Access to scholarly information'.

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one publication added to basket [312715]

Cook Islands Pyle, R.L.; Copus, J.M.; McCormack, G. (2019). Cook Islands, in: Loya, Y. et al. Mesophotic coral ecosystems. Coral Reefs of the World, 12: pp. 409-423. https://dx.doi.org/10.1007/978-3-319-92735-0_23 In: Loya, Y. et al. (Ed.) (2019). Mesophotic coral ecosystems. Coral Reefs of the World, 12. Springer: Cham. ISBN 978-3-319-92734-3. https://dx.doi.org/10.1007/978-3-319-92735-0, meer In: Coral Reefs of the World. Springer: Dordrecht. ISSN 2213-719X, meer

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Beschikbaar in	Auteurs
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Trefwoorden

Pisces [WoRMS] Marien/Kust

Author keywords

Mesophotic coral ecosystems; Rarotonga; Coral reefs; Fish; Technical diving

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Auteurs		Top
Pyle, R.L., meer Copus, J.M. McCormack, G.

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Abstract

The Cook Islands are located in the southern Pacific Ocean, east of Fiji and west of the Society Islands. They consist mostly of coral atolls in the north and high basaltic islands in the south. The islands have a narrow fringing reef, a shallow-reef area several hundred meters wide sloping gently to a depth of about 30 m, and a precipitous drop-off extending to 200 m or more. Research on fishes in mesophotic coral ecosystems (MCEs) in Rarotonga, the largest and most populous island, were documented during expeditions from 1989 to 2012 using conventional SCUBA and technical diving, resulting in the discovery of many new species. Very little is known about other groups in MCEs, but data downloaded from the Global Biodiversity Information Facility (GBIF) reveals a clear pattern of undersampling on MCEs for all taxonomic groups. Patterns of diversity and species richness among fishes are similar to those for reef fishes in general, but differ in several ways, including an underrepresentation of Gobiidae (likely due to sampling bias) and an overrepresentation of Acanthuridae. The primary threats to Cook Islands MCEs are the same general threats that apply to shallow reefs, as well as all reefs at all depths worldwide (i.e., climate change, ocean acidification, and overfishing of food fishes). Over the course of more than 20 years of direct, albeit qualitative, observations in Rarotonga, there have been no major changes in the overall health, abundance, and diversity of organisms on shallow or MCE habitats.

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