Résultats de la recherche
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UPDATED BIOLOGICAL PARAMETERS FOR THE ANTARCTIC STARRY SKATE, AMBLYRAJA GEORGIANA, FROM THE ROSS SEA
of tagged skates. Biological parameters were reviewed and updated for Amblyraja georgiana. Revised ... length-weight regression relationships for male and female A. georgiana confirmed that male and female ... examined in the laboratory. There was no significant difference between the median length at maturity for ... parameter next year. Author(s): M.P. Francis and S. Mormede (New Zealand) Title: UPDATED BIOLOGICAL ...
Meeting Document : WG-FSA-08/20 : Auteur(s): M.P. Francis and S. Mormede (New Zealand)
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The use of electronic monitoring camera system for the toothfish fishery in CCAMLR Subarea 48.3: a study case to help CCAMLR
CCAMLR observers deployed on the fishing fleet. The collection of this data is important for the ... requires considerable effort and cost with mixed results. For example it is not always possible to achieve ... a reasonable figure/rate of line observation for each setting of the lines. A video recording system ... totalling 31 hours and 57 minutes were observed and recorded. For hauling, a total of 53,403 hooks were ...
Meeting Document : WG-FSA-14/27 : Auteur(s): R.A. Benedet (United Kingdom)
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Progress towards a trophic model of the ecosystem of the Ross Sea, Antarctica, for investigating effects of the Antarctic toothfish fishery
with which to investigate effects of the fishery for Antarctic toothfish (Dissostichus mawsoni). The ... properties, and the population structures. Other recommendations for fieldwork, and work currently underway ... Ross Sea, Antarctica, for investigating effects of the Antarctic toothfish fishery Approval: Approved ... Abstract: We report on the further development of a carbon-budget trophic-model of the Ross Sea ...
Meeting Document : WG-EMM-06/14 : Auteur(s): M. Pinkerton, S. Hanchet and J. Bradford-Grieve (New Zealand)
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Size selectivity of the RMT8 plankton net and a commercial trawl for Antarctic krill
study on krill damaged during trawling operations indicates an effect of trawling duration and total ... has been studied. Selection curves indicate that krill length classes smaller 20 mm are ... underrepresented in the RMT8. For the commercial trawl with a liner mesh size of 12mm the length classes smaller 35 ... commercial trawl for Antarctic krill Approval: Approved ...
Meeting Document : WG-EMM-07/28 : Auteur(s): V. Siegel (Germany)
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Assessing data requirements for tag-based estimates of local biomass in data-poor and exploratory fisheries
Abstract: This study used an operating model to simulate a Dissostichus eleginoides population in ... will have a high risk of over-estimating biomass and that for a given number of tagged fish available a ... minimum numbers of recaptures are required to ensure a low likelihood of biomass overestimation. For ... recaptures when there were approximately 270 tagged fish available for recapture. To increase the chance of ...
Meeting Document : WG-SAM-17/13 : Auteur(s): L. Robinson, P. Burch and K. Reid
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Analysis of observer coverage for Japanese krill fishing vessels
had the largest impacts, and year coverage had moderate impacts on CV for both mean krill length and ... stage cluster sampling units (i.e., vessel, year, subarea, and haul), and examined changes in the ... bycatch. Fish bycatch required moderate coverage for haul but low improvement were made by increasing ... coverage for Japanese krill fishing vessels Approval: Approved ...
Meeting Document : WG-SAM-10/17 : Auteur(s): T. Okuda, M. Kiyota and H. Okamura (Japan)
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Revised assessment models for Patagonian toothfish in research block C of Division 58.4.4, Ob and Lena Banks
were set as follows: parameters for ALK (k, Linf and t0) were fixed; year class strength (YCS) was ... highest for models on the assumption of 22% of total IUU catch and lowest for models with assumption of no ... Abstract: I made six sensitive runs of CASAL models (LENGTH/AGE_IUU_MODEL) for stock status ... the block (Len_3/AgeSing_3 models). Single age-length key (ALK) was used for each age structured model ...
Meeting Document : WG-FSA-14/23 : Auteur(s): K. Taki (Japan)
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OPTIONS FOR USING UNREPLICATED ECOSYSTEM MONITORING DATA TO DETECT IMPACTS
an important challenge. Potential strategies are likely to consist of a method for inferring impacts ... interventions based on subtle indications of an impact. Our example impact was characterised by an increase in ... control sites. Identifying how these data could be used in an ecosystem management strategy is therefore ... either assess the expected probability of an observed value in an unimpacted system, or they assess the ...
Meeting Document : WG-EMM-09/26 : Auteur(s): S. Hill, J. Forcada, P. Trathan and C. Waluda (United Kingdom)
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The Antarctic toothfish: how common a prey for Weddell seals?
common (as evidenced by more than 30 years of sustained research projects on that toothfish population ... the quantity of toothfish captured lead us to suggest that this species is a significant prey item for ... ). Author(s): P.J. Ponganis and T.K. Stockard (USA) Title: The Antarctic toothfish: how common a prey for ... Abstract: Reported herein are observations of Weddell seals (Leptonychotes weddellii) feeding on ...
Meeting Document : WG-EMM-07/P4 : Auteur(s): P.J. Ponganis and T.K. Stockard (USA)
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Estimating the biodiversity of the sub-Antarctic Indian part for the ecoregionalisation of CCAMLR areas 58.5.1 and 58.6: Part II. foraging habitats of top predators from French Antarctic Territories – areas of ecological significance in the Southern Ocean
identify area of importance for conservation in the Southern Ocean. The preliminary results on locations ... Ocean Tuna Commission-IOTC, Commission for the Conservation of Southern Bluefin Tuna-CCSBT, Southern ... Indian Ocean Fisheries Agreement-SIOFA, International Commission for the Conservation of Atlantic Tunas ... -ICCAT, South East Atlantic Fisheries Organization-SEAFO) suggesting the importance of collaboration for ...
Meeting Document : WS-MPA-11/08 : Auteur(s): K. Delord, C. Bost, C. Guinet and H. Weimerskirch (France)