Search results
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Comparison of two methods to assess fish losses due to depredation by killer whales and sperm whales on demersal longline
combination of socio-economical, ecological and conservation issues. However, estimating the amount of ... depredated resource can be especially challenging when depredation occurs on fish in the marine environment ... . This is the case for killer whales (Orcinus orca) and sperm whales (Physeter macrocephalus) depredation ... on the demersal Patagonian toothfish (Dissostichus eleginoides) longline fishery operating within the ...
Meeting Document : WG-FSA-14/10 : Author(s): N. Gasco, P. Tixier, G. Duhamel and C. Guinet (France)
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Monitoring, control and surveillance undertaken by Chile during 2017/18 season
Abstract: Within the framework of the Commission for the Conservation of Antarctic Marine Living ... Resources (CCAMLR), the Government of Chile conducts Fishing Inspection Operations to the area of the ... Convention. For this purpose, it provides the use of the Chilean Navy vessel, the OPV- 83 MARINERO FUENTEALBA ... . Likewise, the Second Commanders of the Navy vessels participating in the Antarctic Campaign are instructed ...
Meeting Document : CCAMLR-XXXVII/BG/18 : Author(s): Delegation of Chile
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In situ target strength measurements of Antarctic zooplankton (Euphausia superba and Salpa thompsoni) at 120 khz and 200 khz, corroboration of scattering models, and a statistical technique for delineating species
midwater trawl was used to sample the zooplankton populations and animal length-frequency data were ... recorded. The TS and length-frequency data were combined to corroborate theoretical scattering models for ... both species. The individual TS measurements were collected at 120 kHz with a split-beam echosounder ... and a single-target detection algorithm. Because the two transducers were essentially collocated ...
Meeting Document : WG-Krill-94/12 : Author(s): D.A. Demer and R.P. Hewitt (USA)
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Observer coverage in CCAMLR krill fisheries from 2011 to 2015
Abstract: The issue of observer coverage in krill fisheries has been the subject of extensive ... discussion at the Commission for a number of years, as the krill fishery is the only CCAMLR fishery that does ... not require 100% observer coverage. The Secretariat analysed the level of observer coverage for the ... past five years comparing the number of days of fishing conducted by vessels in the krill fleet, with ...
Meeting Document : WG-EMM-16/11 : Author(s): CCAMLR Secretariat
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Establishing a formal coordination group for CCAMLR
Abstract: Australia and the United Kingdom propose the establishment of a CCAMLR Bureau to ... coordinate the work of the Commission, Scientific Committee and relevant standing committees and working ... groups, among other benefits. This recognises the value of the Scientific Committee’s informal Vice ... Chairs and Conveners (VCAC) group in coordinating the work plan of the Scientific Committee. Furthermore ...
Meeting Document : CCAMLR-XXXVI/21 : Author(s): Delegations of Australia and the United Kingdom
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Biomass of Antarctic krill around South Shetland using 2-dB difference method in April 2016
Abstract: Antarctic Krill plays an important role in Antarctic ecosystems as the medium that ... connects phytoplankton to penguins, seals, and whales. It is also in the limelight as an important protein ... source for the future food resource. Since Krill is mainly schooled within 200m depth, mass catching is ... operated by Norway, Korea, and Japan, etc. Major fishing area is the surroundings of South Sheltland where ...
Meeting Document : WG-EMM-16/60 : Author(s): Delegation of the Republic of Korea
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Further krill-predator model calculations
Antarctic fur seal dataset. These calculations are extended here. The level of krill fishing intensity ... required to halve the fur seal population (γhalf) is between 0.08 and 0.09, slightly lower than that ... estimated previously. Tests of the estimation procedure indicate that γhalf estimates are likely to be ... biased upwards. The estimator is not robust to incorrect specification of the form of the functional ...
Meeting Document : WG-EMM-97/70 : Author(s): Thomson, R.B., Butterworth, D.S.
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Catchability of midwater trawls in relation to krill fishery
Abstract: The relation between mid-water trawl catchability and its construction, trawling regime ... , krill aggregations distribution in the study area is discussed. It is shown that while the trawl ... selectivity affects krill length composition in each trawl sample, the trawl catchability affects the ... estimation of total krill lengths distribution, obtained on the basis of trawl samples from different catched ...
Meeting Document : WG-EMM-98/20 : Author(s): S.M. Kasatkina (Russia)
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Model-based, ecosystem risk assessments of MPA scenarios in Planning Domain 1
Abstract: The Scientific Committee has previously considered results from the Krill-Predator ... -Fishery Model to assess the risks of distributing catch limits for krill among small-scale management ... units (SSMUs) in Subareas 48.1, 48.2, and 48.3. Here we describe a method to update the ... parameterizations of this model and conduct comparable risk assessments at smaller spatial scales. We use the method ...
Meeting Document : SC-CAMLR-XXXVI/BG/27 : Author(s): Delegation of the USA
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Domain 1 Marine Protected Area Preliminary Proposal – PART C: Biodiversity Analysis by MPA zones
their distribution is complex. The Domain 1 MPA model was generated based on priority areas for ... conservation and taking into consideration the krill fishery and climate change. The model achieved the targets ... for almost 90% of the conservation objects, including the protection for all the areas considered to ... be important for birds, mammals and fishes. The proposed MPA fulfils the level of protection agreed ...
Meeting Document : WG-EMM-17/25 Rev. 1 : Author(s): Delegations of Argentina and Chile