Search results
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Progress by WG-EMM-STAPP in estimating krill consumption by air-breathing predators within CCAMLR areas
Abstract: This paper summarises progress by WG-EMM-STAPP in estimating krill consumption by air ... -breathing predators in CCAMLR management units. There have been significant advances in estimating krill ... are now available for Areas 48, 88 and 58. Krill consumption by crabeater seals, the most important krill ... of krill consumption by penguins to be developed in all Areas in the near future. Work to partition krill ...
Meeting Document : WG-EMM-16/68 : Author(s): C. Southwell and P. Trathan
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Estimating density and biomass of Antarctic krill around South Sheltland Islands using the 2-dB difference method
Abstract: The distribution and abundance of krill aggregation inhabiting the Subarea 48.1, which ... in 2016 and 38 and 200 kHz from March 6 to 14 in 2017. Krill were collected by the commercial middle trawl ... survey. The weighted krill density and biomass were estimated to be 0.20 g/m 2 and 18 thousand tons (CV ... S v difference-3.0-13.8 dB in 2017, respectively. Krill density and biomass were significantly higher in 2016 ...
Meeting Document : WG-EMM-17/08 : Author(s): S.-G. Choi, K. Lee and D. An
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Estimating density and biomass of Antarctic krill (Euphausia superba) around South Shetland using the 2-dB difference method
Abstract: The distribution and abundance of krill aggregation inhabiting the Subarea 48.1, which ... in 2016 and 38 and 200 kHz from March 6 to 14 and 38 and 120 kHz on April 27 and May 5 in 2017. Krill were ... identification) based on data from a transect-based survey. The weighted krill density and biomass were estimated ... thousand tonnes (CV=31.4%) applying S v difference-3.0-13.8 dB in 2017, respectively. Krill density ...
Meeting Document : SG-ASAM-18/08 : Author(s): S. Choi, K. Lee and D. An
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Dynamics of Notothenia rossii rossii size-age structure on the Kerguelen Islands shelf
of fisheries, the share of the fish spawning for the first time increased considerably in catches and in some ... years (1981-1985) fisheries were based practically on recruitment. After the closure of the specialised ... fishery in 1985 and after the marbled rockcod by-catch at other fisheries was limited to 500 tons ... . The author consideers the demographic populational structure in 1991 to be close to that observed ...
Meeting Document : WG-FSA-94/04 : Author(s): P.B. Tankevich (Ukraine)
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Comparing two and three frequency dB window identification techniques for estimating Antarctic krill density
frequency echosounder (38, 70, 120 and 200 kHz), were used to characterise Antarctic krill. Identification ... of krill targets was carried out using different permutations of two and three-frequency windows. Density ... was estimated, from identified krill targets, using the 120 kHz data and an acoustic scattering model. A Bland ... techniques for estimating Antarctic krill density Approval: Approved Secretariat Workflow Status: Content ...
Meeting Document : SG-ASAM-18/01 : Author(s): S. Fielding
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An outline of narrowband echosounder survey methods to estimate biomass of Antarctic krill in CCAMLR Division 58.4.1 during 2018/19 season by the Japanese survey vessel, Kaiyo-maru
Abstract: Japanese multidisciplinary survey with a focus on biomass estimation of Antarctic krill ... -frequency (38, 120 and 200 kHz) krill identification method which is the current CCAMLR standard ... impedances (mass density and sound-speed contrasts) of krill will also be conducted during the survey ... and H. Murase Title: An outline of narrowband echosounder survey methods to estimate biomass of Antarctic krill ...
Meeting Document : SG-ASAM-18/02 : Author(s): K. Abe, K. Amakasu, R. Matsukura, T. Mukai and H. Murase
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SISO
Definition: Scheme of International Scientific Observation Status: Content Approved Site Section ... Scheme of International Scientific Observation ...
Acronym
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A RE-APPRAISAL OF THE TOTAL BIOMASS AND ANNUAL PRODUCTION OF ANTARCTIC KRILL
fishery, our net-based data help to set a conservative estimate of total krill biomass. Author ... acoustic methodology, plus the need for precautionary management of the developing krill fishery, our net ... and production are still very uncertain. Recently, circumpolar krill databases, combined with growth models ... on a standardised net sampling methodology but they integrate over the period 1926-2004, during which krill ...
Meeting Document : WG-EMM-08/17 : Author(s): A. Atkinson (United Kingdom), V. Siegel (Germany), E.A. Pakhomov (South Africa), M.J. Jessopp (United Kingdom) and V. Loeb (USA)
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Preliminary report on the South Orkneys Ecosystem Studies (SOES) field work undertaken by RRS James Clark Ross (JR15004) and associated field camps in January–February 2016
information on important interactions between krill, krill predators and the commercial fishery ... information on important interactions between krill, krill predators and the commercial fishery ... on the krill-based ecosystem in the main fishing area in Subarea 48 undertaken in the austral summer of 2015-16 ... of krill and its predators across a range of temporal and spatial scales using acoustics, nets and cameras ...
Meeting Document : WG-EMM-16/19 : Author(s): J. Watkins, O.R. Godø, S. Fielding, C. Reiss, P. Trathan and E. Murphy
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Fishery Report 2016: Dissostichus eleginoides Kerguelen Islands French EEZ (Division 58.5.1)
Description / Abstract: Fishery Report 2016: Dissostichus eleginoides Kerguelen Islands French ... Fishery Report 2016: Dissostichus eleginoides Kerguelen Islands French EEZ (Division 58.5.1) ... Fishery Report 2016: Dissostichus eleginoides Kerguelen Islands French EEZ (Division 58.5.1) ... Observation. In longline fisheries targeting D. eleginoides, biological data collection includes ... and effects 34. There is no formal evaluation available for this fishery, but fishery observers collect ... November 2015). Fishery Report 2016: Dissostichus eleginoides Kerguelen Islands ... French EEZ (Division 58.5.1) Fishery Report 2016: Dissostichus eleginoides ...
Document : Site Section: Publications