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
  • Circulaires
  • English
  • Français
  • Русский
  • Español
  • Accueil
  • Publications
  • CCAMLR Science
  • Selected Scientific Papers, SC-CAMLR-SSP/7
  • Selected Scientific Papers, SC-CAMLR-SSP/7 (1990):189–219

Publications

  • Documents de base
  • Bulletin statistique
    • Archives du Bulletin statistique
  • Brochure CCAMLR
  • CCAMLR Science
    • CCAMLR Science : Tous les volumes
  • Mesures de conservation
    • Parcourir les mesures de conservation
    • Mesures de conservation passées et actuelles
  • Rapports de pêcheries
  • Archive des rapports de pêcheries
  • Documents relatifs à la pêche
  • Manuels
  • Affiches et autres documents promotionnels
  • Résumés scientifiques
  • Commander une publication
    • Rapports de réunions (2013) – Achat des rapports sur support papier
  • Bibliothèque de référence des engins de pêche
Print this page
Increase font size
Decrease font size

Selected Scientific Papers, SC-CAMLR-SSP/7 (1990):189–219

Journal Volume:
Selected Scientific Papers, SC-CAMLR-SSP/7
Page Numbers:
189–219
Auteur(s):
Butterworth, D.S.
download attachmentTéléchargement (1.49 Mo)

Towards an initial operational management procedure for the krill fishery in Subareas 48.1, 48.2 and 48.3

Abstract / Description: 

An operational management procedure for krill (Euphausia superba) in Subareas 48.1, 48.2 and 48.3 requires a basis for the assessment of resource status, and an algorithm for specifying the levels of regulatory mechanisms (e.g., a catch control law) that depends on the results of the assessment. The development and selection of a procedure requires a basis for the simulation testing of procedures, and an operational definition of CCAMLR Article II to provide criteria against which to assess procedure performance. Suggestions are made under each of these headings. Assessment of resource status is provided by the CPUE ‘Composite Index’ proposed by the Workshop on the Krill CPUE Simulation Study. Annual TACs are restricted to an initial ceiling (Cc) for a five year period, with a reference CPUE level (CPUEref) calculated as the average CPUE over that time. Thereafter TACs may increase by Cr% per annum. However, this increase may be suspended or reversed in any year, depending on how many of the previous three years' CPUE values fall below a target level of 0.75 CPUEref. An operating model of krill dynamics in the region is developed for simulation testing purposes. A provisional operational interpretation of Article II is proposed: the primary objective is to prevent the expected lowest biomass of krill over a 20-year harvesting period from falling below 60% of its average unexploited level; subject to this constraint, accumulated catches should be as large as possible without substantial associated probability that TAC reductions may prove necessary during the 20-year period considered. Simulation tests, including one particular test of robustness to the assumptions of the operating model, are carried out to illustrate the overall process proposed; for this illustrative exercise, the choice of catch control law parameters would probably lie between (Cc=1 million tonnes; cr=15%) and (Cc=2 million tonnes; cr=10%). Suggestions for proceeding with further investigations of possible operational management procedures are made. It is proposed that possible alternative suggestions for such procedures should be made in a similar fashion to that set out in the paper. Suggestions by others for alternative forms and parameter values (or their probable ranges) for the krill dynamics operating model used for testing procedures are encouraged.

This page was last modified on 11 Feb 2016

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

 

Liens rapides

  • Liste des navires autorisés
  • Postes vacants
  • Liste officielle des mesures de conservation en vigueur 2024/25
  • Accomplissements de la CCAMLR

Current and Upcoming Meetings

  • WG-SAM-2025
  • WG-ASAM-2025
  • WG-EMM-2025

Footer Links French

  • S'identifier
  • Messagerie
  • e-groupes CCAMLR
  • Assistance technique
  • Groupes de discussion de la CCAMLR
  • 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 2025, Tous droits réservés.  |  Haut de la page  |  Site créé par Eighty Options