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A statistical method for analysing the extent of IUU fishing in CCAMLR waters: application to Subarea 48.3
the known encounters of FPV with licensed vessels. Thus for each encounter between an IUU vessel and ... birds was calculated separately for summer and winter using previously published CCAMLR observer data ... estimate the total number of days of IUU fishing that could occur during each year. For each IUU incident ... IUU fishing time using a simulation model. For each year, the model simulated 1000 IUU fishing ...
Meeting Document : WG-FSA-02/4 : Автор(ы): D.J. Agnew and G.P. Kirkwood (United Kingdom)
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Medium-term research plan for the Ross Sea toothfish fishery
to identify key research objectives for the fishery over the next 3–5 years in relation to Article II ... Abstract: The aim of this paper is to review the management of the Ross Sea toothfish fishery and ... uncertainties in our current knowledge that need to be addressed to fulfil the requirements of Article II. These ... include, for example, uncertainty in the biological parameters and stock assessment of Antarctic toothfish ...
Meeting Document : WG-FSA-14/60 : Автор(ы): Delegations of New Zealand, Norway and the United Kingdom
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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 ... years), large (>100km 2) and isolated by deep water or sand” (Edgar et al. 2014). Two analyses of New ... Zealand’s system of marine reserves, which has now been in place for several decades, indicate unexpected ...
Meeting Document : CCAMLR-XXXIII/BG/20 : Автор(ы): Submitted by ASOC
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Revised research plan for toothfish in Divisions 58.4.4 a and 58.4.4b by Shinsei maru No. 3 in 2012/13
three years with an annual research catch of approximately 50 tonnes. The estimate (976 tonnes) using ... aimed the establishment of CASAL catch-at-age model for this Division by 2016/17. Author(s): Delegation ... 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 : Автор(ы): Delegation of Japan
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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 : Автор(ы): Zh.A. Frolkina (USSR)
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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 : Автор(ы): C.R. Davies, E.M. van Wijk and A.J. Constable (Australia)
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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 ... consecutive years, including 3 years when several indices showed that food availability was well below average ...
Meeting Document : WG-EMM-95/26 : Автор(ы): Reid, K., Croxall, J.P., Lunn, N.J., Boyd, I.L.
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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 : Автор(ы): D.J. Agnew, J. Taylor and I. Everson (United Kingdom)
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A revised estimate of short-term yield for the mackerel icefish (Champsocephalus gunnari) off Heard Island based on a trawl survey in 1998
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 ... in 2000 will be predominantly on Age 5 fish. After this time, catch limits may need to be set at an ... 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 : Автор(ы): A. Constable and D. Williams (Australia)
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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 : Автор(ы): A.S. Brierley, P.N. Trathan, J. Poncet and A. Morton (United Kingdom)
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