Résultats de la recherche

1. Global MPAs and marine reserves: lessons learned and implications for CCAMLR

   . One major study published this year identified five characteristics of MPAs that achieved ... achieve better conservation outcomes for marine areas. As these areas grow in number, it is important to ... Zealand’s system of marine reserves, which has now been in place for several decades, indicate unexpected ... benefits for scientists and scientific research. NZ’s no-take reserves have effectively served as “control ...

   Meeting Document : CCAMLR-XXXIII/BG/20 : Auteur(s): Submitted by ASOC

2. Revised research plan for toothfish in Divisions 58.4.4 a and 58.4.4b by Shinsei maru No. 3 in 2012/13

   aimed the establishment of CASAL catch-at-age model for this Division by 2016/17. Author(s):  Delegation ... three years with an annual research catch of approximately 50 tonnes. The estimate (976 tonnes) using ... 2011/12 fishing season with the aims of providing the data required for assessments of the population ... . An approximate stock biomass level of Dissostichus spp. in the survey area was tentatively estimated ...

   Meeting Document : WG-FSA-12/58 Rev. 1 : Auteur(s): Delegation of Japan

3. On Ageing Technique for Icefish (champsocephalus gunnari Lönnberg 1905) from South Georgia Island Shelf

   adjustment to age determination of fish longer than 30 cm with an enlarged otolith centre. An age-length key ... . This was done using specimens from strictly’ defined age groups. These radii measurements suggest an ... for the third quarter of the year is appended Author(s):  Zh.A. Frolkina (USSR) Title:  On Ageing ... Technique for Icefish (champsocephalus gunnari Lönnberg 1905) from South Georgia Island Shelf Approval ...

   Meeting Document : WG-FSA-89/19 : Auteur(s): Zh.A. Frolkina (USSR)

4. Theoretical considerations for estimating the density of cohorts and mean recruitment of Patagonian toothfish (Dissostichus eleginoides) based on research trawl survey data

   was an urgent need to review and revise the recruitment series for D.eleginoides in Subarea 48.3 ... , recognizing the importance of obtaining a consistent and reliable recruitment series for review at the 2004 ... analyses; which age groups should be included in the estimation of recruitment, and the need for a clear ... Abstract:  The current method used by the Working Group on Fish Stock Assessment (WG-FSA) for ...

   Meeting Document : WG-FSA-04/92 : Auteur(s): C.R. Davies, E.M. van Wijk and A.J. Constable (Australia)

5. Population demography of Antarctic fur seals: the costs of reproduction and implications for life-histories

   age, after accounting for variation due to pregnancy and calendar year. Survival was reduced as a ... age classes with the highest reproductive output (ages 5-8 years). 5. Mean pregnancy rate was 0•70 (SD ... age 3–4 years, pregnancy rate peaked at age 8 years and declined thereafter. Otherwise pregnancy rate ... . 2. Population age structures were used, in conjuction with the measured age-specific survival rates ...

   Meeting Document : WG-EMM-95/26 : Auteur(s): Reid, K., Croxall, J.P., Lunn, N.J., Boyd, I.L.

6. Rajid by-catch in the longline fishery for toothfish in Subarea 48.3

   Rocks and South Georgia, achieved average catch rates of over 1 ray/thousand hooks, and 20-30 rays ... was 65-69cm for males and 80-84cm for females, for B. murrayi was 65-69cm and 70-74cm for males and ... 34.7/thousand hooks for toothfish and 2.2/thousand hooks for grenadier species. Generalised linear ... models demonstrated that there are significant differences between the catch rates of rays for different ...

   Meeting Document : WG-FSA-99/40 : Auteur(s): D.J. Agnew, J. Taylor and I. Everson (United Kingdom)

7. A revised estimate of short-term yield for the mackerel icefish (Champsocephalus gunnari) off Heard Island based on a trawl survey in 1998

   in 2000 will be predominantly on Age 5 fish. After this time, catch limits may need to be set at an ... population. Unlike the previous 3 years, the Age 2 cohort in 1998 is very weak and is expected to contribute ... little to the biomass in subsequent years. If recruitment to Age 2 in 1999 is also weak then the fishery ... Shell Bank) in the vicinity of Heard Island enabled a revised estimate of yield for the coming 2 seasons ...

   Meeting Document : WG-FSA-98/54 : Auteur(s): A. Constable and D. Williams (Australia)

8. Near-shore acoustic surveys for Antarctic krill at South Georgia, January 2004

   observations from the past 20 years. A low density was perhaps not unexpected in line with recent cyclical ... to be well suited as an acoustic survey platform. The echosounder transducers were deployed on a ... were collected in seastate 6 with winds up to 30 knots and swells of approximately 2.5 m at survey ... patterns in density but may have been exacerbated by the presence of a large iceberg (40 miles by 30 miles ...

   Meeting Document : WG-EMM-04/35 : Auteur(s): A.S. Brierley, P.N. Trathan, J. Poncet and A. Morton (United Kingdom)

9. Proposal for a longline survey on toothfish in Statistical Subarea 48.6 in 2017/18

   . This initial year will be used for exploration with particular emphasis on tagging efforts and habitat ... and acoustic techniques. The proposed research is pertinent to issues raised by the Scientific ... Patagonian and Antarctic toothfish, tagging toothfish for biomass estimation and for stock linkage studies ... collaborating members. In 2018 a new Norwegian fishing vessel will be available, equipped with advanced ...

   Meeting Document : WG-FSA-17/61 Rev. 1 : Auteur(s): Delegation of Norway

10. A method for spreading the risk of localised effects of catches of Antarctic krill up to the trigger level, during the development of stage 2 of feedback management

    an approach for undertaking the review and providing advice on a future spatial distribution of the ... in Area 48 to develop a framework for the review of CM51-07.  We first consider the requirements for ... distribute the catch.  In the second section, we review the best scientific evidence available for krill ... Abstract:  Conservation Measure 51-07 provides an interim distribution of the trigger level in the ...

    Meeting Document : WG-EMM-16/69 : Auteur(s): A.J. Constable, S. Kawaguchi and M. Sumner

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