OperaV1, Main, Exploration, bibRecord, 002134

Habitat structure in soft-sediment environments and abundance of juvenile snapper Pagrus auratus

Identifieur interne : 002134 ( Main/Exploration ); précédent : 002133; suivant : 002135

Habitat structure in soft-sediment environments and abundance of juvenile snapper Pagrus auratus

Auteurs : Simon F. Thrush [Nouvelle-Zélande] ; Diane Schultz [Nouvelle-Zélande] ; Judi E. Hewitt [Nouvelle-Zélande] ; Drew Talley [États-Unis]

Source :

Marine ecology. Progress series : (Halstenbek) [ 0171-8630 ] ; 2002.

RBID : Pascal:03-0098977

Descripteurs français

Pascal (Inist)
- Choix habitat, Sédiment, Organisme benthique, Abondance écologique, Animal jeune, Pêcherie, Gestion ressources, Ressource biologique naturelle, Zone côtière, Nouvelle Zélande, Océan Pacifique Sud, Pagrus auratus.

English descriptors

KwdEn :
- Benthic organism, Coastal zone, Ecological abundance, Fishery, Habitat selection, Natural biological resources, New Zealand, Resource management, Sediments, South Pacific, Young animal.

Abstract

Small-scale biogenic or physical features, such as depressions, burrows, shells, boulders, cobbles and sand waves, dominate soft-sediment coastal and shelf environments. Such structures may provide refuge from predation and feeding areas for juvenile fish. We investigated the potential for juvenile snapper Pagrus auratus to utilise areas characterised by small-scale structures by sampling soft-sediment habitats that varied in both sediment characteristics and biogenic structure. Juvenile snapper abundance was estimated at each site using opera house traps, while variations in small-scale benthic habitat structure were quantified from video transects of the seafloor. The captured fish had 172 ± 43 mm fork length, indicating that they were 1 to 2 yr old. Statistical modelling revealed that complex habitat structure had a positive influence on the abundance of juvenile snapper, suggesting that these areas are preferentially utilised. This finding highlights the potential for disturbance of such structures (by, for example, trawling or dredging) to affect the abundance of juvenile snapper.

Affiliations:

Nouvelle-Zélande, États-Unis

Links toward previous steps (curation, corpus...)

to stream PascalFrancis, to step Corpus: 000536
to stream PascalFrancis, to step Curation: 000112
to stream PascalFrancis, to step Checkpoint: 000523
to stream Main, to step Merge: 002214
to stream Main, to step Curation: 002134

Le document en format XML

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<front><div type="abstract" xml:lang="en">Small-scale biogenic or physical features, such as depressions, burrows, shells, boulders, cobbles and sand waves, dominate soft-sediment coastal and shelf environments. Such structures may provide refuge from predation and feeding areas for juvenile fish. We investigated the potential for juvenile snapper Pagrus auratus to utilise areas characterised by small-scale structures by sampling soft-sediment habitats that varied in both sediment characteristics and biogenic structure. Juvenile snapper abundance was estimated at each site using opera house traps, while variations in small-scale benthic habitat structure were quantified from video transects of the seafloor. The captured fish had 172 ± 43 mm fork length, indicating that they were 1 to 2 yr old. Statistical modelling revealed that complex habitat structure had a positive influence on the abundance of juvenile snapper, suggesting that these areas are preferentially utilised. This finding highlights the potential for disturbance of such structures (by, for example, trawling or dredging) to affect the abundance of juvenile snapper.</div>
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Habitat structure in soft-sediment environments and abundance of juvenile snapper Pagrus auratus

Habitat structure in soft-sediment environments and abundance of juvenile snapper Pagrus auratus

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri