Search results
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An interlaboratory comparison of ages estimated for Dissostichus eleginoides from the Argentine Sea, southwest Atlantic Ocean
the effects on readings of different otolith processing methods, scales and otoliths were taken from ... University, Norfolk, Virginia, United States of America. (CQFE). As a consequence of the exchange of otoliths ... carried out with NIWA, and the results presented, it is apparent that the NIWA preparation method produced ... a clearer section. More hyaline bands were visible in the NIWA preparations, particularly near the ...
Meeting Document : WG-FSA-04/45 : Author(s): M.C. Cassia (Argentina), P.L. Horn (New Zealand) and J.R. Ashford (USA)
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in Subarea 88.2 SSRU 88.2E for the years 2002–03 to 2010–11
Abstract: We provide an update of the Bayesian sex and age structured population stock assessment ... model for Antarctic toothfish (Dissostichus mawsoni) in the SSRU 88.2E, using revised catch, catch-at ... -age and tag-recapture data from selected trips and all vessel trips. The 2011 reference case model ... resulted in a 30% higher estimate of initial biomass than for the 2009 base case. The main reason for this ...
Meeting Document : WG-FSA-11/44 : Author(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)
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Development of methods for evaluating the management of benthic impacts from longline fishing using spatially explicit production models, including model validation
Abstract: An important management objective for CCAMLR in the high seas region of the Antarctic ... investigate a range of scenarios for simulating the effect and management of benthic impacts from longline ... extreme case studies to validate the underlying model and code. In general, the model simulations were ... management by areal closures. The management action simulated considered a range of areal closure radii and ...
Meeting Document : WG-FSA-10/29 : Author(s): A. Dunn, S.J. Parker and S. Mormede (New Zealand)
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An approach to feedback management (FBM) of the krill fishery based on routine acoustic data collection and intermittent land-based predator studies
Abstract: The conservation measure regarding (or stipulating) the interim distribution of trigger ... level in the fishery of Antarctic krill in Subareas 48.1 through 48.4 (CM 51-07) has continuously been ... renewed due the CCAMLR’s inability to establish an agreed, operational feedback management (FBM) approach ... . As the trigger level lacks any form of relationship with the actual stock condition this approach is ...
Meeting Document : SC-CAMLR-XXXVI/BG/20 : Author(s): Delegations of Norway, China and Chile
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Otolith chemistry reveals local population structure of Antarctic toothfish (Dissostichus mawsoni) within the CCAMLR Subarea 48.6
and economical value and that distributed in the high latitude of the Southern Ocean. The CCAMLR ... subarea 48.6 is one of an important fishing zone, however, the local population structure of D. mawsoni is ... unknown in this regions, which hampered the understanding on population dynamics of this species and the ... management of toothfish fishery. The chemistry in the otolith can often be used to distinguish population ...
Meeting Document : WG-FSA-18/75 : Author(s): L. Wei, G.P. Zhu, S. Somhlaba, X.Y. Yu and M. Duan
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Exploration of CPUE standardisation variances in the Ross Sea (Subareas 88.1 and 88.2A South of 70°s) Antarctic toothfish (Dissostichus mawsoni) exploratory longline fishery
fisheries without integrated assessments in the CPUE by seabed area method to estimate stock biomass in the ... interim of collecting sufficient tag recaptures. Here, we address the two questions: (1) which unit of ... trend and magnitude of catch rates. Using data from the Ross Sea Antarctic toothfish fishery, we ... (hooks/cluster) with Generalised Linear Models (GLMs). The model with total hook numbers was preferred ...
Meeting Document : WG-SAM-2019/25 : Author(s): D. Maschette, S. Wotherspoon and P. Ziegler
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Long-term change in zooplankton communities of the Southern Ocean between 1997 and 2018: implications for fisheries and ecosystems
Abstract: We provide an analysis of zooplankton distributions in the circumpolar Southern Ocean ... based on samples collected by the international Southern Ocean Continuous Plankton Recorder Survey (SO ... observations over the period 1997–2018. These environmental data were: phytoplankton biomass, primary ... productivity, sea-surface temperature (SST), mixed layer depth, sea ice and the spatial gradient of SST (as an ...
Meeting Document : WG-EMM-2019/66 : Author(s): M.H. Pinkerton, M. Decima, J. Kitchener, K. Takahashi, K. Robinson, R. Stewart and G.W. Hosie
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Towards an initial operational management procedure for the krill fishery in Subareas 48.1, 48.2 and 48.3
requires a basis for the assessment of resource status, and an algorithm for specifying the levels of ... regulatory mechanisms (e.g. a catch control law) that depends on the results of the assessment. Developing ... and selecting a procedure requires a basis for the simulation testing of procedures, and an ... . Suggestions are made under each of these headings. Assessment of resource status is provided by the CPUE " ...
Meeting Document : SC-CAMLR-VIII/BG/17 : Author(s): Delegation of South Africa
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Results of the groundfish survey carried out in CCAMLR Subarea 48.3 in January 2010
Abstract: In January 2010, the UK carried out the annual groundfish survey in CCAMLR Sub-Area ... 48.3 on the FV Sil. Seventy-five random hauls were completed with good coverage across the shelf ... , representing an increase in effort overall compared with surveys carried out in 2008 and 2009 on the same ... dominated the population, 2+ and 1+ sized fish were also present, and in larger proportions than in 2009. A ...
Meeting Document : WG-FSA-10/38 : Author(s): R.E. Mitchell, M. Belchier, S. Gregory, L. Kenny, J. Nelson, J. Brown and L. Feathersone (UK)
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Resource support for conducting scientific programs in the Ross Sea region MPA: comments and proposals
Abstract: Although the Ross Sea Region MPA (RSRMPA) has existed for three years, it is still ... unclear how research catch limits in the MPA should be allocated. The Scientific Committee's current ... recommendations on the allocation of allowable catch for surveys in MPAs from the TAC set for the exploratory ... Olympic fishery outside MPAs in the Ross Sea Region have no scientific justification and do not meet the ...
Meeting Document : SC-CAMLR-38/12 : Author(s): Делегация Российской Федерации