Search results
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Modelling growth of Antarctic krill: growth trends with sex, length, season, and region
years accumulation of instantaneous growth rate (IGR) measurements were modelled using a Linear Mixed ... Model (LMM). A model of inter-moult period (IMP) as a function of temperature, required to convert IGR ... this model was used to predict seasonal IMP using a model of the average sea-surface temperature ... seasonal trend for each region. Smaller krill exhibited higher growth rates and a progressive decrease in ...
Meeting Document : WG-EMM-05/29 : Author(s): S. Kawaguchi, S. Candy, R. King (Australia), M. Naganobu (Japan) and S. Nicol (Australia)
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Preliminary report on the South Sandwich Island research cruise by RRS Discovery (DY098) in January-February 2019
research cruise consisted of a large scale acoustic survey, following track lines established during the ... midnight). The net samples included a Rectangular Midwater Trawl 8+1, bongo nets and a NEuston MOdified net ... backscatter attributed to krill using a swarms identification algorithm and a summary of the cetacean ... observations. Author(s): S. Fielding, C. Manno, G. Stowasser, B. Apeland, D. Ashurst, A. Ariza, M. Baines, L ...
Meeting Document : WG-EMM-2019/78 : Author(s): S. Fielding, C. Manno, G. Stowasser, B. Apeland, D. Ashurst, A. Ariza, M. Baines, L. Cornwell, A.B. Hulbert, K.R. Jones-Williams, C. Lacey, E.G. Langan, E.D. McRae, F.A. Perry, S. Pinder, E.J. Rowlands, F. Saccomandi, C. Silverstri, M.E.S. Sørensen, A. Slomska, J. Jackson, E.J Murphy, M. Reichelt, S. Thorpe, P. Trathan and G. Tarling
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Development in maturity stage composition and vertical distribution in an Antarctic krill (Euphausia superba) hotspot
Abstract: Antarctic krill (Euphausia superba) aggregate in various ways depending on a range of ... spawning state is not well described or understood. In the present study, a krill fishing vessel during ... regular operation was used as a platform for frequent collection of biological data to investigate krill ... a 75 km strip on the shelf edge northwest of the South Orkney Islands. The study was carried out ...
Meeting Document : WG-EMM-14/15 : Author(s): B.A. Krafft, G. Skaret and T. Knutsen (Norway)
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Beach debris survey – Main Bay, Bird Island, South Georgia 1999/2000
, South Georgia, a total of 408 items was collected. This represents a 92% increase on the total of 213 ... items collected in 1998/99, but is consistent with numbers in years prior to the 1998/99. A dramatic ... 168 items in 1999/2000 and a 40% increase in the number of items collected during summer reflect a ... constituent of all beach debris collected. This is a cause for concern, and suggests that CCAMLR needs to ...
Meeting Document : SC-CAMLR-XX/BG/02 : Author(s): Delegation of the United Kingdom
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THE NEED FOR TRADE MEASURES IN CCAMLR
Abstract: Last year the Commission considered a proposal for a Conservation Measure concerning ... the adoption of a trade measure that will promote compliance with CCAMLR’s agreed upon rules to bring ... of such a measure is a positive step for CCAMLR. ASOC reviews in this paper the relevant ... international legal framework, and concludes that a measure such as the one proposed does not challenge in any ...
Meeting Document : CCAMLR-XXVII/BG/28 : Author(s): Submitted by ASOC
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THE AUTOLINE SYSTEM – AN UPDATED DESCRIPTIVE REVIEW OF THE METHOD WITH RECOMMENDATIONS TO CLARIFY CCAMLR CONSERVATION MEASURES REGULATING LONGLINE FISHERIES WITHIN THE CONVENTION AREA
discussing circumstances and scenarios occurring with the method. A definition of the fundamental unit of ... gear (a ‘line’) for longlines is proposed for the purposes of regulation and management. Current ... changes are suggested clarify understanding of these measures. The paper includes a recommendation for a ... review of Annex 41-01/B (2007) governing research within exploratory fisheries by WG-FSA with a view to ...
Meeting Document : WG-FSA-08/60 : Author(s): J.M. Fenaughty (New Zealand)
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Estimation of krill (Euphausia superba) mortality and production rate in the Antarctic peninsula region
Abstract: A net sampling survey for krill was carried out by RV ‘Meteor’ along the Antarctic ... exceeded a factor of 35 times, while interannual variability between available surveys reached only a ... factor of 1.6 times. Krill mortality was calculated by linearized catch curve analysis and resulted a ... rate of Z=0.88 (1989/90) and Z=0.96 (1987/88). Production was estimated and resulted a P/B ratio of ...
Meeting Document : WG-KRILL-91/15 : Author(s): Delegation of Germany
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Outline proposal for geographic information services for CCAMLR
Abstract: This document outlines a proposal from the British Antarctic Survey (BAS) to provide a ... Geographical Information System (GIS) for CCAMLR. The proposal offers a web-based GIS that will provide state ... handling geographic information, and a phased handover of system development and maintenance to the ... experience in developing award-winning web-based GIS and spatial data access systems. The proposal offers a ...
Meeting Document : WG-EMM-12/70 : Author(s): Submitted by the Secretariat on behalf of Adrian Fox, British Antarctic Survey (United Kingdom)
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An ecological risk assessment of current conservation measures for krill fishing in East Antarctica (CCAMLR Divisions 58.4.1 and 58.4.2)
involved in any redevelopment of a commercial krill (Euphausia superba) fishery in CCAMLR Divisions 58.4.1 ... has a high likelihood of achieving CCAMLR’s objectives in this region. This paper outlines a ... measures that are relevant to Divisions 58.4.1 and 58.4.2 sufficiently mitigate the risk of a krill fishery ... Divisions 58.4.1 and 58.4.2, suggests a distribution of catch across the four subdivisions. This risk ...
Meeting Document : WG-EMM-18/37 : Author(s): N. Kelly, L. Emmerson, S. Kawaguchi, C. Southwell and D. Welsford
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Mincing, mealing and batching: waste management strategies aimed at reducing seabird interactions with trawl vessels
to a paste before it was discharged reduced the number of seabirds around the vessels. The first ... trial was on a mid-water trawler targeting hoki (Macruronus novaezelandiae), and the experiment on this ... (Nototodarus sloanii). There was no meal plant on board and the mealed treatment was replaced with a batching ... was determined by counting the number of birds within a 40m-radius semi-circular sweep zone behind the ...
Meeting Document : WG-FSA-07/42 : Author(s): E. Abraham and J. Pierre (New Zealand)