Accueil Accueil

CCAMLR

Commission pour la conservation de la faune et la flore marines de l'Antarctique

  • Accueil
  • Accès au texte
  • S'identifier

Formulaire de recherche

  • La CCAMLR
  • Mesures de conservation
  • Science
  • Pêcheries
  • Conformité
  • Données
  • Réunions
  • Publications
  • English
  • Français
  • Русский
  • Español
  • Accueil
  • Réunions
  • WG-EMM-04/49
Print this page
Increase font size
Decrease font size

Krill caught by predators and nets revisited: interpreting prey selection in proper temporal–spatial scales

Doc Number: WG-EMM-04/49
Auteur(s): M.E. Goebel, V. Loeb, D.P. Costa, S.N. Sexton, A.R. Banks, J.D. Lipsky and A.C. Allen (USA)
Submitted By: ()

Please complete a document request form to access this document

Connexion utilisateur

  • Demander un nouveau mot de passe
Abstract: 

Krill demography and recruitment are tracked through time using scientific net sampling and predator diet sampling. Comparisons of these two methods show broadly coherent results but also frequently show differences that have fueled speculation of prey selectivity by predators. Krill, however, are not homogenously distributed and matching temporal-spatial scales of sample collections can be problematic. In this paper we use ARGOS satellite location data from foraging female fur seals to first identify foraging habitat and its proximity to breeding colonies where diet studies are conducted. We compare krill length frequency data collected over the entire West area of the U.S. AMLR survey grid with that collected only in fur seal foraging habitat. Both are compared to krill in fur seal diet. When spatial temporal scales for the two data sets are approximated as close as possible we found no difference in krill length frequency distributions. We suggest that fur seals are not selecting large krill while foraging but are instead selecting foraging locations that have larger krill in densities that maximize energy gain.

This page was last modified on 30 Sep 2011

Nous contacter

E-mail: ccamlr [at] ccamlr [dot] org
Téléphone: +61 3 6210 1111
Fax: +61 3 6224 8744
Adresse: 181 Macquarie Street, Hobart, 7000, Tasmania, Australia
Adresse postale: PO Box 213, North Hobart 7002, Tasmania, Australia

 

Liens rapides

  • Postes vacants
  • Liste officielle des mesures de conservation en vigueur en 2019/20
  • Assistance
  • Bulletin statistique

Réunions récentes et prochaines réunions

  • WG-ASAM-2020 - 01 juin 2020 - 05 juin 2020
  • WG-SAM-2020 - 29 juin 2020 - 03 juil 2020
  • WG-EMM-2020 - 06 juil 2020 - 17 juil 2020
  • WG-FSA-2020 - 12 oct 2020 - 23 oct 2020
  • SC-CAMLR-39 - 26 oct 2020 - 30 oct 2020

Footer Links French

  • S'identifier
  • Messagerie
  • e-groupes CCAMLR
  • Assistance technique
  • Droits d’auteur
  • Clause de non-responsabilité et politique de confidentialité
  • Plan du site
© Copyright - the Commission for the Conservation of Antarctic Marine Living Resources 2019, Tous droits réservés.  |  Haut de la page  |  Site créé par Eighty Options