Résultats de la recherche

1. Variation in standing stock of the mackerel icefish Champsocephalus gunnari at South Georgia

   . 6. The study demonstrates how a key predator can have an over-riding impact on a commercial fish ... Abstract:  1. Bottom trawl surveys on the South Georgia shelf indicate episodic declines in the ... commercial fishing. 2. The greatest effect has been observed in years when krill are known to have been ... scarce on the South Georgia shelf. 3. It is thought that C. gunnari survivorship is closely related to ...

   Meeting Document : WG-FSA-99/63 : Auteur(s): I. Everson, G. Parkes (United Kingdom), K.-H. Kock (Germany) and I. Boyd (United Kingdom)

2. Updated assessment of Patagonian toothfish (Dissostichus eleginoides) in the vicinity of Crozet Islands (Subarea 58.6)

   Abstract:  This paper presents the latest developments in Casal models for Crozet with an updating ... for releasing documents:  France ... of input data from the more recent years (up to 2015/16 season) and a reassessment of stocks taking ...

   Meeting Document : WG-FSA-16/52 : Auteur(s): R. Sinegre and G. Duhamel

3. How much do icefish (Notothenioidei, Channichthyidae) eat in the southern Scotia Arc and the Antarctic Peninsula region?

   the krill – feeding C. gunnari and C. wilsoni, both within an area and between areas. Food intake was ... of the Antarctic Peninsula. Variability of food consumption was comparatively low between years in ... more variable in C. aceratus and C. antarcticus which, as larger fish, rely heavily on fish as their ... primary dietary component. Their food intake varied by a factor of 2 or 3 between years. Most estimates of ...

   Meeting Document : WG-FSA-10/18 : Auteur(s): K.-H. Kock (Germany), C.D. Jones (USA), J. Gröger and S. Schöling (Germany)

4. Entanglement of pinnipeds at Marion Island

   Abstract:  Forty-two sightings of 28 individual pinnipeds with neck collars were observed from ... April 1991 to June 1995 at Marion Island, Southern Ocean. One of the individuals was an elephant seal ... . tropicalis. Fifty percent of neck collars on fur seals were removed. The incidence of entanglement of fur ...

   Meeting Document : SC-CAMLR-XIV/BG/17 : Auteur(s): Delegation of South Africa

5. Comparison of krill density estimated with swarm-based and dB-difference method using acoustic data collected by Chinese fishing vessel participating in the 2019 Area 48 survey

   from various identification methods, except for the estimates from [-20 20] identification window and ... set to four ranges including [-20 20], [2 16], [0.4 12] and without dB window (only 120kHz used ... Workflow Status:  Content Approved Document Release Consent:  No Delegation responsibility for releasing ... Abstract:  To address the effect of various identification methods on krill biomass estimates ...

   Meeting Document : SG-ASAM-2019/06 : Auteur(s): X. Yu, X. Wang, J. Zhang and X. Zhao

6. Changes in the fish biomass around Elephant Island (Statistical Subarea 48.1) from 1976 to 1996

   two years of the fishery. Results of bottom trawl surveys conducted by Germany in the vicinity of ... apparent from length compositions obtained in the 1980s. The Antarctic Peninsula region was closed for ...

   Meeting Document : WG-FSA-97/27 : Auteur(s): Kock, K.-H.

7. Population dynamics of black-browed and grey-headed albatrosses Diomedea melanophris and D. chrysostoma at Bird Island, South Georgia

   Island, South Georgia for 17 consecutive years (1975-1991). Over this period almost all the Grey-headed ... Albatross colonies decreased, at an average rate of 1.8% per annum. Although the total Black-browed ... ) decreased. Black-browed Albatrosses follow an annual breeding cycle, with over 80% of birds successful in ... rearing a chick and 75% of those failing to do so returning to breed the next year, 5-10% of both ...

   Meeting Document : SC-CAMLR-XII/BG/21 : Auteur(s): Delegation of United Kingdom

8. The Patagonian toothfish: biology, ecology and fishery

   , before undertaking an ontogenetic migration into deeper water. Although they are active predators and ... toothfish are a long-lived species (> 40 years), which initially grow rapidly on the shallow shelf areas ... supports valuable fisheries throughout the Southern Ocean. D. eleginoides are found on the southern shelves ... habitat at around 100 mm (1 yr old), and inhabit relatively shallow water (< 200m) until 6-7 years of ...

   Meeting Document : WG-FSA-10/P05 : Auteur(s): M.A. Collins, P. Brickle, J. Brown and M. Belchier

9. Updated assessment of Patagonian toothfish (Dissostichus eleginoides) in the vicinity of Crozet Islands (Subarea 58.6)

   recent ones (Sinègre & Duhamel, 2016) with an updating of input data from the more recent years (up ... Abstract:  This paper presents the latest developments in models for Crozet following the more ... :  Approved Secretariat Workflow Status:  Content Approved Delegation responsibility for releasing documents ...

   Meeting Document : WG-FSA-17/59 : Auteur(s): R. Sinegre, G. Duhamel and J.B. Lecomte

10. Results of a CCAMLR-sponsored research survey to monitor abundance of pre-recruit Antarctic toothfish in the southern Ross Sea, February 2012

    mainly 70–110 cm TL, 5–10 year old, Antarctic toothfish. It provided new data on the depth distribution ... . The survey had two main objectives: (i) To establish the feasibility of developing a time series of ... most appropriate depth strata for future annual surveys. The survey demonstrated it is possible to ... survey biomass estimate had an overall c.v. of 9%, which met the target c.v. of 10%. The survey caught ...

    Meeting Document : WG-FSA-12/41 : Auteur(s): S.M. Hanchet, S. Mormede, S. Parker, A. Dunn (New Zealand) and H.-S. Jo (Republic of Korea)

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