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
  • Content Approved
Print this page
Increase font size
Decrease font size

Content Approved

Antarctic Endurance

Flag: 
Norway
  • Lire la suite de Antarctic Endurance

Preliminary agendas for CCAMLR-XXXVII and SC-CAMLR-XXXVII

  • Lire la suite de Preliminary agendas for CCAMLR-XXXVII and SC-CAMLR-XXXVII
  • English

Polus 1

Flag: 
Ukraine
  • Lire la suite de Polus 1
Abstract: 

This report presents activities and preliminary results from a krill and ecosystem monitoring survey conducted in February 2018 at the South Orkney Islands.

Saga Sea

Flag: 
Norway
  • Lire la suite de Saga Sea

Antarctic Sea

Flag: 
Norway
  • Lire la suite de Antarctic Sea

Volk Arktiki

Flag: 
Russian Federation
  • Lire la suite de Volk Arktiki
Abstract: 

Climate change is a threat to marine ecosystems and the services they provide, and reducing fishing pressure is one option for mitigating the overall consequences for marine biota. We used a minimally realistic ecosystem model to examine how projected effects of ocean warming on the growth of Antarctic krill, Euphausia superba, might affect populations of krill and dependent predators (whales, penguins, seals, and fish) in the Scotia Sea. We also investigated the potential to mitigate depletion risk for predators by curtailing krill fishing at different points in the 21st century. The projected effects of ocean warming on krill biomass were strongest in the northern Scotia Sea, with a ≥ 40% decline in the mass of individual krill. Projections also suggest a 25% chance that krill biomass will fall below an established depletion threshold (75% of its unimpacted level), with consequent risks for some predator populations, especially penguins. Average penguin abundance declined by up to 30% of its unimpacted level, with up to a 50% chance of falling below the depletion threshold. Simulated krill fishing at currently permitted harvest rates further increased risks for depletion, and stopping fishing offset the increased risks associated with ocean warming in our model to some extent. These results varied by location and species group. Risk reductions at smaller spatial scales also differed from those at the regional level, which suggests that some predator populations may be more vulnerable than others to future changes in krill biomass. However, impacts on predators did not always map directly to those for krill. Our findings indicate the importance of identifying vulnerable marine populations and targeting protection measures at appropriate spatial scales, and the potential for spatially-structured management to avoid aggravating risks associated with rising ocean temperatures. This may help balance tradeoffs among marine ecosystem services in an uncertain future.

Antarctic Endeavour

Flag: 
Chile
  • Lire la suite de Antarctic Endeavour

Fu Rong Hai

Flag: 
China
  • Lire la suite de Fu Rong Hai

Pages

  • « premier
  • ‹ précédent
  • …
  • 264
  • 265
  • 266
  • 267
  • 268
  • 269
  • 270
  • 271
  • 272
  • …
  • suivant ›
  • dernier »
S'abonner à RSS - Content Approved

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

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

Current and Upcoming Meetings

  • WG-ASAM-2025
  • WG-EMM-2025
  • WG-FSA-2025
  • SCIC-2025
  • SC-CAMLR-44

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