Search results
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Integrated stock assessment for the Heard Island and the McDonald Islands Patagonian toothfish (Dissostichus eleginoides) fishery (Division 58.5.2)
eleginoides) at the Heard and the McDonald Islands (Division 58.5.2) with data until the start of August 2013 ... . Compared to the last assessment in 2011, this assessment updated the growth model and compared the effects ... of the longline hauls into two sub-fisheries that were depth-stratified but not regionally-explicit ... . Alternative trawl sub-fisheries were evaluated within the assessment model in different scenarios. All ...
Meeting Document : WG-FSA-13/24 : Author(s): P. Ziegler, S. Candy and D. Welsford (Australia)
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UPDATED BIOLOGICAL PARAMETERS FOR THE ANTARCTIC STARRY SKATE, AMBLYRAJA GEORGIANA, FROM THE ROSS SEA
Abstract: Photographs of skates taken by observers on New Zealand toothfish longliners in the ... of these were returned in good condition and were considered likely to survive. Estimates of the ... examined in the laboratory. There was no significant difference between the median length at maturity for ... ). Nearly all of the skates caught were returned to the sea (discarded or tagged). A considerable proportion ...
Meeting Document : WG-FSA-08/20 : Author(s): M.P. Francis and S. Mormede (New Zealand)
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How precautionary is the policy governing the Ross Sea Antarctic toothfish (Dissostichus mawsoni) fishery?
the present and future population sizes of the Antarctic toothfish (Dissostichus mawsoni Norman) in ... the likely effects of food web responses to harvesting of toothfish in the Ross Sea, or to predict the ... Abstract: This article reviews the adequacy of data and models currently being used to estimate ... accurate picture of total population size, and that estimates of both the pre-exploitation spawning stock ...
Meeting Document : WG-FSA-13/P02 : Author(s): P.A. Abrams
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Consumption estimates for male Antarctic fur seals at the South Orkney Islands during the post mating migration
Abstract: The estimates of fur seal consumption of krill in subareas 48.1 to 48.3 which have been ... used in ecosystem modelling and CCAMLR’s risk assessment approach, are based on the distribution of fur ... in order to provide more robust estimates of the fur seal impact on this region that can be used to ... their biomass is orders of magnitude less than those of penguins. As a result the estimates of fur seal ...
Meeting Document : WG-EMM-18/10 : Author(s): I. Staniland and S. Hill
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An integrated stock assessment for the Heard Island and the McDonald Islands Patagonian toothfish (Dissostichus eleginoides) fishery (Division 58.5.2)
the proportion of tag-recaptures in survey catch on the main trawl ground. All model runs were ... best available estimates of model parameters, the use of abundance estimates from a random stratified ... composition data to aid with the estimation of year class strength and selectivity functions of sub-fisheries ... . Compared to the 2013 assessment, this assessment takes into account the recommendations of WG-FSA-2013, SC ...
Meeting Document : WG-FSA-14/34 : Author(s): P. Ziegler, D. Welsford, W. de la Mare and P. Burch (Australia)
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Shipboard field operations conducted during the 1989 austral summer by the US Antarctic Marine Living Resources (AMLR) Program
austral summer in waters adjacent to the Antarctic Peninsula and South Georgia are described. Operations ... , 9) net sampling for krill in association with the hydroacoustic survey, 10) sampling for larval ... ): Delegation of USA Title: Shipboard field operations conducted during the 1989 austral summer by the US ... Abstract: Field research activities conducted aboard the NOAA Ship Surveyor during the 1989 ...
Meeting Document : SC-CAMLR-VIII/BG/34 : Author(s): Delegation of USA
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Results from the 2019 annual acoustic krill monitoring off the South Orkney Islands
Abstract: In 2019, the annual IMR regional krill monitoring survey off the South Orkneys was ... conducted by RV Kronprins Haakon as part of the Scotia Sea large scale krill monitoring effort. To allow for ... present the results from the 2019 regional survey processed and analysed in the same way as the annual ... edge north of the Islands. Also the krill areal density measured on the 120 kHz of 69.87 g/m 2 was very ...
Meeting Document : WG-EMM-2019/69 : Author(s): G. Skaret, B.A. Krafft, G. Macaulay, T. Knutsen and O.A. Bergstad
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Report on the first year’s fishing under New Zealand’s exploratory fishery for toothfish within the SPRFMO Convention Area
provided for the consideration of the SPRFMO Scientific Committee meeting in October 2016 such that it can ... San Aspiring pursuant to CMM 4.14, approved by the SPRFMO Commission in January 2016. This update is ... advise the SPRFMO Commission meeting in early 2017 on progress with the exploratory fishery. Author(s ... Abstract: This paper is an update on exploratory fishing for toothfish by the New Zealand vessel ...
Meeting Document : SC-CAMLR-XXXV/BG/32 : Author(s): J. Fenaughty and M. Cryer
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Exploring the ASPM as an alternative method to estimate the Patagonian toothfish biomass at CCAMLR Subarea 48.3
fit with standardized CPUE series and observed length proportions in the catches. In this paper, we ... discuss some of the problems related with available CPUE data and estimate new vulnerability patterns to ... produce a good fit of the model both, to CPUE series and proportion-at-length data from CCAMLR dataset ... . Author(s): O.C. Wöhler, P.A. Martínez and A. Aubone (Argentina) Title: Exploring the ASPM as an ...
Meeting Document : WG-FSA-SAM-05/5 Rev. 1 : Author(s): O.C. Wöhler, P.A. Martínez and A. Aubone (Argentina)
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Reviewing the age structured production model (ASPM) as an alternative method to estimate the Patagonian toothfish biomass at CCAMLR Subarea 48.3
toothfish stock assessment at CCAMLR Subarea 48.3. Results obtained from this model, presented in the last ... meeting of WG-FSA-SAM held in Yokohama (Japan), show acceptable fit with standardized CPUE series, annual ... catches and observed catch length proportions (Wöhler et al., 2005- WG-FSA-SAM 05/5). In this paper, we ... applied the same model, but introducing a function modified from Brandão & Butterworth (2003) to ...
Meeting Document : WG-FSA-05/73 : Author(s): O.C. Wöhler, P.A. Martinez and A. Aubone (Argentina)