AustralieFrV1, Main, Exploration, bibRecord, 00BF15

Adélie penguin foraging behaviour and krill abundance along the Wilkes and Adélie land coasts, Antarctica

Identifieur interne : 00BF15 ( Main/Exploration ); précédent : 00BF14; suivant : 00BF16

Adélie penguin foraging behaviour and krill abundance along the Wilkes and Adélie land coasts, Antarctica

Auteurs : B. C Wienecke [Australie] ; R. Lawless [Australie] ; D. Rodary [France] ; C.-A Bost [France] ; R. Thomson [Australie] ; T. Pauly [Australie] ; G. Robertson [Australie] ; K. R Kerry [Australie] ; Y. Lemaho [France]

Source :

Deep-Sea Research Part II [ 0967-0645 ] ; 2000.

RBID : ISTEX:6D20F10208C0641BF61493F2E98072BEA358A7EB

Descripteurs français

Pascal (Inist)
- Comportement alimentaire, Euphausia superba, Krill, Mers Antarctiques, Pygoscelis adeliae, Régime alimentaire, Spheniscidae, Surveillance écologique, Zooplancton.
Wicri :
- topic : Antarctique, Biomasse, Plateau continental.

English descriptors

KwdEn :
- Adelie, Adelie penguins, Adelie penguins pygoscelis adeliae, Ainley, Antarctic, Antarctic krill, Antarctica, Aurora australis, Biomass, Ccamlr, Continental shelf, Creche, Creche period, Creche periods, Creche stages, Crystallorophias, Deployment, Diet, Dive depths, Dsrii, East antarctica, Environmental monitoring, Euphausia superba, Feeding behavior, Foraged, Foraging, Foraging grounds, Foraging locations, Foraging trips, Guard period, Guard phase, Hydroacoustic survey, Krill, Krill distribution, Maximal distances, Open water, Pauly, Penguin, Penguins foraged, Percentage distribution, Petrel, Petrel island, Petrel islands, Pygoscelis adeliae, Shing, Shirley, Shirley island, Shirley islands, Southern Ocean, Southern ocean, Stomach samples, Study colonies, Superba, Total distance, Trawl, Trip duration, Trip durations, Water column, Wienecke, Zooplankton.
Teeft :
- Adelie, Adelie penguins, Adelie penguins pygoscelis adeliae, Ainley, Antarctic, Antarctic krill, Antarctica, Aurora australis, Biomass, Ccamlr, Continental shelf, Creche, Creche period, Creche periods, Creche stages, Crystallorophias, Deployment, Dive depths, Dsrii, East antarctica, Foraged, Foraging, Foraging grounds, Foraging locations, Foraging trips, Guard period, Guard phase, Hydroacoustic survey, Krill, Krill distribution, Maximal distances, Open water, Pauly, Penguin, Penguins foraged, Percentage distribution, Petrel, Petrel island, Petrel islands, Shing, Shirley, Shirley island, Shirley islands, Southern ocean, Stomach samples, Study colonies, Superba, Total distance, Trawl, Trip duration, Trip durations, Water column, Wienecke.

Abstract

Abstract: The foraging behaviour of Adélie penguins Pygoscelis adeliae was studied simultaneously at Shirley Island (SI, 110°E) and at Petrel Island (PI, 140°E) in approximate conjunction with the ship-based krill survey conducted on board the RSV Aurora Australis. Acoustic and trawl data were collected near both study sites, albeit at the end of the penguins’ breeding season. The distances travelled by Adélie penguins from Shirley Island were significantly greater than those travelled by penguins from Petrel Island (SI 31–144km; PI 6–79km). Mean foraging trip durations and mean maximal distances travelled were also significantly different between colonies (duration: SI guard 55±32h, crèche 113±17h; PI guard 32±9h, crèche 25±7h; distance: SI guard 182±135km, crèche 353±93km; PI guard 100±42km, crèche 86±28km). All penguins foraged over the continental shelf or the shelf break and not in oceanic waters. The percentage distribution of dive depths was similar at both colonies; nearly 70% of all dives were to <35m. Trawls from the ship contained krill Euphausia superba and E. crystallorophias near SI but only E. superba near PI. Biomass measurements showed that near SI 61% of krill biomass occurred at 63–97m but the penguins dived to this depth range only 12% of their time; near PI 83% of the biomass was found from 43 to 63m and 20% of dives reached these depths. The diet of the SI penguins consisted mainly of E. crystallorophias (51–53% by mass), while penguins from PI ingested large amounts of both euphausiids (27–38% E. superba, 22–39% E. crystallorophias). At SI, the remainder of the diet consisted of fish, mainly Pleuragramma antarcticum (26–30%), and amphipods (<1%). Similarly, at PI, fish contributed 19–37% to the penguins’ diet and amphipods constituted 1–3%.

Url:

https://api.istex.fr/document/6D20F10208C0641BF61493F2E98072BEA358A7EB/fulltext/pdf

DOI: 10.1016/S0967-0645(00)00036-9

Affiliations:

Le document en format XML

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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adelie</term>
<term>Adelie penguins</term>
<term>Adelie penguins pygoscelis adeliae</term>
<term>Ainley</term>
<term>Antarctic</term>
<term>Antarctic krill</term>
<term>Antarctica</term>
<term>Aurora australis</term>
<term>Biomass</term>
<term>Ccamlr</term>
<term>Continental shelf</term>
<term>Creche</term>
<term>Creche period</term>
<term>Creche periods</term>
<term>Creche stages</term>
<term>Crystallorophias</term>
<term>Deployment</term>
<term>Diet</term>
<term>Dive depths</term>
<term>Dsrii</term>
<term>East antarctica</term>
<term>Environmental monitoring</term>
<term>Euphausia superba</term>
<term>Feeding behavior</term>
<term>Foraged</term>
<term>Foraging</term>
<term>Foraging grounds</term>
<term>Foraging locations</term>
<term>Foraging trips</term>
<term>Guard period</term>
<term>Guard phase</term>
<term>Hydroacoustic survey</term>
<term>Krill</term>
<term>Krill distribution</term>
<term>Maximal distances</term>
<term>Open water</term>
<term>Pauly</term>
<term>Penguin</term>
<term>Penguins foraged</term>
<term>Percentage distribution</term>
<term>Petrel</term>
<term>Petrel island</term>
<term>Petrel islands</term>
<term>Pygoscelis adeliae</term>
<term>Shing</term>
<term>Shirley</term>
<term>Shirley island</term>
<term>Shirley islands</term>
<term>Southern Ocean</term>
<term>Southern ocean</term>
<term>Stomach samples</term>
<term>Study colonies</term>
<term>Superba</term>
<term>Total distance</term>
<term>Trawl</term>
<term>Trip duration</term>
<term>Trip durations</term>
<term>Water column</term>
<term>Wienecke</term>
<term>Zooplankton</term>
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<term>Euphausia superba</term>
<term>Krill</term>
<term>Mers Antarctiques</term>
<term>Pygoscelis adeliae</term>
<term>Régime alimentaire</term>
<term>Spheniscidae</term>
<term>Surveillance écologique</term>
<term>Zooplancton</term>
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<term>Adelie penguins</term>
<term>Adelie penguins pygoscelis adeliae</term>
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<term>Antarctic</term>
<term>Antarctic krill</term>
<term>Antarctica</term>
<term>Aurora australis</term>
<term>Biomass</term>
<term>Ccamlr</term>
<term>Continental shelf</term>
<term>Creche</term>
<term>Creche period</term>
<term>Creche periods</term>
<term>Creche stages</term>
<term>Crystallorophias</term>
<term>Deployment</term>
<term>Dive depths</term>
<term>Dsrii</term>
<term>East antarctica</term>
<term>Foraged</term>
<term>Foraging</term>
<term>Foraging grounds</term>
<term>Foraging locations</term>
<term>Foraging trips</term>
<term>Guard period</term>
<term>Guard phase</term>
<term>Hydroacoustic survey</term>
<term>Krill</term>
<term>Krill distribution</term>
<term>Maximal distances</term>
<term>Open water</term>
<term>Pauly</term>
<term>Penguin</term>
<term>Penguins foraged</term>
<term>Percentage distribution</term>
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<term>Petrel island</term>
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<front><div type="abstract" xml:lang="en">Abstract: The foraging behaviour of Adélie penguins Pygoscelis adeliae was studied simultaneously at Shirley Island (SI, 110°E) and at Petrel Island (PI, 140°E) in approximate conjunction with the ship-based krill survey conducted on board the RSV Aurora Australis. Acoustic and trawl data were collected near both study sites, albeit at the end of the penguins’ breeding season. The distances travelled by Adélie penguins from Shirley Island were significantly greater than those travelled by penguins from Petrel Island (SI 31–144km; PI 6–79km). Mean foraging trip durations and mean maximal distances travelled were also significantly different between colonies (duration: SI guard 55±32h, crèche 113±17h; PI guard 32±9h, crèche 25±7h; distance: SI guard 182±135km, crèche 353±93km; PI guard 100±42km, crèche 86±28km). All penguins foraged over the continental shelf or the shelf break and not in oceanic waters. The percentage distribution of dive depths was similar at both colonies; nearly 70% of all dives were to <35m. Trawls from the ship contained krill Euphausia superba and E. crystallorophias near SI but only E. superba near PI. Biomass measurements showed that near SI 61% of krill biomass occurred at 63–97m but the penguins dived to this depth range only 12% of their time; near PI 83% of the biomass was found from 43 to 63m and 20% of dives reached these depths. The diet of the SI penguins consisted mainly of E. crystallorophias (51–53% by mass), while penguins from PI ingested large amounts of both euphausiids (27–38% E. superba, 22–39% E. crystallorophias). At SI, the remainder of the diet consisted of fish, mainly Pleuragramma antarcticum (26–30%), and amphipods (<1%). Similarly, at PI, fish contributed 19–37% to the penguins’ diet and amphipods constituted 1–3%.</div>
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<name sortKey="Thomson, R" sort="Thomson, R" uniqKey="Thomson R" first="R" last="Thomson">R. Thomson</name>
<name sortKey="Wienecke, B C" sort="Wienecke, B C" uniqKey="Wienecke B" first="B. C" last="Wienecke">B. C Wienecke</name>
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Serveur d'exploration sur les relations entre la France et l'Australie

Adélie penguin foraging behaviour and krill abundance along the Wilkes and Adélie land coasts, Antarctica

Adélie penguin foraging behaviour and krill abundance along the Wilkes and Adélie land coasts, Antarctica

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Descripteurs français

English descriptors

Abstract

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Pour manipuler ce document sous Unix (Dilib)

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