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On problem of natural subdividing of Antarctic krill’s geographic area (an application to the monitoring of fishing)
trawlers as well as data from searching ships are a serious help in this respect for intermediate years ... (Russia) Title: On problem of natural subdividing of Antarctic krill’s geographic area (an application to ... with emphasis on fisheries regions distribution are considered on the base of consisting data of ... position of regions of increased abundance of krill creates strong difficulties for determination of the ...
Meeting Document : WG-KRILL-93/37 : Автор(ы): R.R. Makarov and L.L. Menshenina (Russia)
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Influence of the quality and quantity of data from a multi-year tagging program on bias and precision of biomass estimates from an integrated stock assessment – update
estimates from an integrated tag-based assessment are influenced by various aspects of a multi-year tagging ... : Influence of the quality and quantity of data from a multi-year tagging program on bias and precision of ... and the resulting data should not be used in stock assessments with only few years of data available ... collected in short tagging programs were sufficient for relatively robust assessments. Estimation errors of ...
Meeting Document : WG-FSA-12/18 : Автор(ы): P.E. Ziegler (Australia)
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An assessment of the impact of krill fishery on penguins in the South Shetlands
fishery is very unlikely to have an adverse impact on the local krill biomass and hence on penguins ... season (December-March) in the South Shetland Islands (Subarea 48.1) was assessed based on available ... information on fishery, penguins and krill biomass. The catch is very low in December followed by roughly ... equivalent amount (3,000-10,000 t/10-day) for the following three months, with its increased fishing ...
Meeting Document : WG-KRILL-93/07 : Автор(ы): T. Ichii, M. Naganobu and T. Ogishima (Japan)
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Update on the ‘Demersal interactions with marine benthos in the Australian EEZ of the Southern Ocean: an assessment of the vulnerability of benthic habitats to impact by demersal gears’ project
Abstract: We provide an update on progress in the FRDC and industry-funded project “Demersal ... interactions with marine benthos in the Australian EEZ of the Southern Ocean: an assessment of the ... technologies and unique datasets for quantifying the dynamics and extent of the interactions between demersal ... fishing gears and deep sea habitats in the Southern Ocean, will assist with providing key components for ...
Meeting Document : WG-EMM-10/23 : Автор(ы): G.P. Ewing, D.C. Welsford and A.J. Constable (Australia)
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Influence of tag numbers, size of tagged fish, duration of the tagging program, and auxiliary data on bias and precision of an integrated stock assessment
auxiliary data on bias and precision of an integrated stock assessment Approval: Approved ... estimate annual recruitment and year class strengths. (3) For a simulated lightly fished stock, CASAL ... Abstract: Using a modeling framework for toothfish population dynamics, fishing and data ... numbers were important particularly in the early stages of an exploratory fishery to ensure some ...
Meeting Document : WG-SAM-12/24 : Автор(ы): P.E. Ziegler (Australia)
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A proposal to adopt a conservation measure seeking an interim prohibiting on deep sea gillnet fishing in the Convention Area
): Delegation of Australia Title: A proposal to adopt a conservation measure seeking an interim prohibiting on ... Abstract: Australia proposes that the possession and/or use of gillnets for commercial purposes ... be prohibited until such time as (1) the Scientific Committee has investigated and reported on the ... potential impacts of this gear in the Convention Area, and (2) the Commission has agreed on the basis of ...
Meeting Document : WG-FSA-06/46 : Автор(ы): Delegation of Australia
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Influence of data quality and quantity from a multiyear tagging program on an integrated fish stock assessment
tagging program on an integrated fish stock assessment Approval: Approved ... Abstract: Using a modeling framework for toothfish (Dissostichus spp.) population dynamics ... an integrated tag-based assessment are influenced by various aspects of a multiyear tagging program ... % tag size-overlap were sufficient for robust and unbiased assessments. Particularly in the early stages ...
Meeting Document : WG-FSA-13/P03 : Автор(ы): P. Ziegler
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Progress on the application of an age-structured production model fitted to commercial catch-rate and catch-at-length data to assess the toothfish (Dissostichus eleginoides) resource in the Prince Edward Island vicinity
on the application of an age-structured production model fitted to commercial catch-rate and catch-at ... -at-length and GLM standardised CPUE data are all extended for one further year. Despite model ... particular, to accommodate the view of the August 2003 meeting of the Subgroup on assessment methods that 0.2 ... yr-1 is likely the largest value of natural mortality M that is plausible for toothfish. Catch, catch ...
Meeting Document : WG-FSA-03/97 : Автор(ы): A. Brandão and D.S. Butterworth (South Africa)
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An assessment of temporal variability and interrelationships between CEMP parameters collected on Adélie penguins at Béchervaise Island
period 1991/92 to 2001/02 on Adélie penguins at Béchervaise Island. Parameters relating to chick survival ... ) the absolute number of chicks on the island which fully crèche and 2) the number of chicks crèched per ... supports the notion that events occurring during the hatching period are crucial for chick survival. The ... birds is important for understanding interrelationships between CEMP parameters and breeding success ...
Meeting Document : WG-EMM-02/46 : Автор(ы): L.M. Emmerson, J. Clarke, K. Kerry and C. Southwell (Australia)
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An ecosystem-based approach to management: using individual behaviour to predict the indirect effects of Antarctic krill fisheries on penguin foraging
human disturbance on ecosystems. Author(s): S.H. Alonzo, P.V. Switzer and M. Mangel (USA) Title: An ... have indirect effects on other species in a community. Although ecosystem approaches to management are ... conditions on these interactions. In this study, we extended a behavioural model used previously to ... understand the interactions between penguins and krill to determine the indirect effect of krill fisheries on ...
Meeting Document : WG-EMM-03/34 : Автор(ы): S.H. Alonzo, P.V. Switzer and M. Mangel (USA)
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