Search results
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Assessment of escape mortality of Antarctic krill (Euphausia superba) in trawls
. The experiment was carried out on the krill fishing grounds off South Orkney Islands (60°35’S, 45°30’W), during ... was carried out on the krill fishing grounds off South Orkney Islands (60°35’S, 45°30&rsquo ...
Meeting Document : WG-EMM-14/14 : Author(s): B.A. Krafft (Norway) and L.A. Krag (Denmark)
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Further computations of the consequences of setting the annual krill catch limit to a fixed fraction of the estimate of krill biomass from a survey
is set as the catch for a 20-year period. Three alternative fishing seasons are considered. Fishing ... is set as the catch for a 20-year period. Three alternative fishing seasons are considered. Fishing ... in summer (near-coincident with the period of krill growth), or throughout the year, allows a greater catch ... in summer (near-coincident with the period of krill growth), or throughout the year, allows a greater catch ...
Meeting Document : WG-KRILL-92/04 : Author(s): D.S. Butterworth, G.R. Gluckman and S. Chalis (South Africa)
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Preliminary assessment of mackerel icefish (Champsocephalus gunnari) in the vicinity of Heard Island and McDonald Islands (Division 58.5.2), based on a survey in July 2007, using the generalised yield model
of Division 58.5.2 to the west of 79o 20’ E using standard CCAMLR methods. Evidence of strong 1+ year class ... for the area of Division 58.5.2 to the west of 79o 20’ E using standard CCAMLR methods. Evidence of strong ... 1+ year class recruiting to the population has led to an increase in the estimated biomass of mackerel ...
Meeting Document : WG-FSA-07/47 : Author(s): D.C. Welsford (Australia)
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Preliminary assessment of Patagonian toothfish, Dissostichus eleginoides, in the vicinity of Heard Island and McDonald Islands (Division 58.5.2), based on a survey in May–June 2006 using the Generalised Yield Model
of yield for the area of Division 58.5.2 to the west of 79°20’ E using standard CCAMLR methods. It also ... length density data from the 1999 survey ii) the exclusion of year classes 6+ which have been included ... of Division 58.5.2 to the west of 79°20’ E using standard CCAMLR methods. It also investigates the impact ... survey ii) the exclusion of year classes 6+ which have been included in previous assessments (WG-FSA ...
Meeting Document : WG-FSA-06/45 Rev. 1 : Author(s): D.C. Welsford, A.J. Constable, T. Lamb and T. Robertson (Australia)
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Data from recent trawl surveys in the vicinity of Heard Island and McDonald Islands (Division 58.5.2), reveal an unusual cohort structure in the mackerel icefish (Champsocephalus gunnari) population
58.5.2 to the west of 79o 20’ E using standard CCAMLR methods. A predicted in 2010, the strong 4+ cohort ... , leading to a situation that is unusual for this region, with four or five successive year classes all ... 58.5.2 to the west of 79o 20’ E using standard CCAMLR methods. A predicted in 2010, the strong ... in the population, leading to a situation that is unusual for this region, with four or five successive year classes ...
Meeting Document : WG-FSA-11/22 : Author(s): D.C. Welsford (Australia)
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A preliminary assessment of mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2014 random stratified trawl survey
population structure, abundance and yield for the area of Division 58.5.2 to the west of 79° 20’ E using ... standard CCAMLR methods. A pattern of multiple year classes being present simultaneously in the population ... population structure, abundance and yield for the area of Division 58.5.2 to the west of 79° 20&rsquo ... ; E using standard CCAMLR methods. A pattern of multiple year classes being present simultaneously ...
Meeting Document : WG-FSA-14/44 : Author(s): D.C. Welsford (Australia)
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Research plan for the exploratory longline fishery for Dissostichus spp. in Divisions 58.4.1, 58.4.2 and Subarea 48.6 in 2014/2015 (including CTD data in 88.1, 88.2)
in Division 58.4.1, 58.4.2 and Subarea 48.6 from 2014/2015 season to 2018/2019 using Korean commercial bottom ... in Division 58.4.1, 58.4.2 and Subarea 48.6 from 2014/2015 season to 2018/2019 using Korean commercial bottom ...
Meeting Document : WG-SAM-14/21 : Author(s): Delegation of the Republic of Korea
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Results from the New Zealand exploratory fishery for Dissostichus spp. in Divisions 58.4.1 and 58.4.2 in the 2004/05 season
C for a catch of 0.372 tonnes of D. mawsoni. San Aspiring undertook 20 research sets in Division 58.4.1 SSRU ... G for a catch of 20.9 tonnes of D. mawsoni and 0.4 tonnes of D. eleginoides. The first sign of the onset ... tonnes of D. mawsoni. San Aspiring undertook 20 research sets in Division 58.4.1 SSRU G for a catch ... of 20.9 tonnes of D. mawsoni and 0.4 tonnes of D. eleginoides. The first sign of the onset of spawning ...
Meeting Document : WG-FSA-05/62 : Author(s): G.J. Patchell (New Zealand)
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Preliminary assessment of Champsocephalus gunnari on the Heard Island Plateau (Division 58.5.2) based on a survey in May 2002
was not significantly different from previous years but the one-sided lower 95% confidence bound was greater than ... of mostly three and four year old fish in May 2002. Given the size of the fish, the expectation from current ... estimates of length at age parameters would be for most of the fish to be three year olds. However, given ... the abundance of fish in the population and the age structure of fish last year, it would be more reasonable ...
Meeting Document : WG-FSA-02/47 : Author(s): A.J. Constable, R. Williams and T. Lamb (Australia)
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Habitat partitioning in Antarctic krill: spawning hotspots and nursery areas
and extracted data spanning 41 years (1976-2016) from the existing KRILLBASE-abundance and KRILLBASE-length ... has been suggested to occur when densities are 39 exceptionally high during years of strong ... and extracted data spanning 41 years (1976-2016) from the existing KRILLBASE-abundance and KRILLBASE-length ... has been suggested to occur when densities are 39 exceptionally high during years of strong ...
Meeting Document : WG-EMM-2019/20 : Author(s): F. Perry, A. Atkinson, S.F. Sailley, G.A. Tarling, S.L. Hill, C.H. Lucas and D.J. Mayor