Search results
-
An assessment of toothfish in Subarea 48.3 using CASAL
frequencies, and a poor fit to the CPUE data, for which an even higher process error CV was estimated (0.46 ... Abstract: The CASAL software has been successfully applied to an assessment of the stock of ... , with an extensive range of sensitivity tests and examination of diagnostics. A baseline assessment ... the catch length frequencies, but a poor fit to the early CPUE data, for which a substantial process ...
Meeting Document : WG-FSA-05/16 : Author(s): R.M. Hillary, G.P. Kirkwood and D.J. Agnew (United Kingdom)
-
An integrated stock assessment of Patagonian toothfish (Dissostichus eleginoides) in CCAMLR Subarea 48.4
Abstract: This paper describes an update to the CASAL assessment of Patagonian toothfish (D ... . eleginoides) in Subarea 48.4. The assessment data time series are updated with the observations for the 2014 ... data for the full time series, a revised maturity ogive, and changes to the assumed tag growth ... retardation period. Stock projections indicate that the stock is in healthy condition and that an annual yield ...
Meeting Document : WG-FSA-15/28 : Author(s): M. Soeffker, V. Laptikhovsky, T. Earl and C. Darby (United Kingdom)
-
AN UPDATED DESCRIPTION AND PARAMETERISATION OF THE SPATIAL MULTI-SPECIES OPERATING MODEL (SMOM )
Abstract: An updated version of the Spatial Multi-species Operating Model (SMOM) of krill ... -predator-fishery dynamics is described. This has been developed in response to requests for scientific ... advice regarding the subdivision of the precautionary catch limit for krill among 15 small-scale ... using the WG-SAM set of reference observations for Area 48 (the SAM calendar) is described. Alternative ...
Meeting Document : WG-SAM-08/17 : Author(s): É.E. Plagányi and D.S. Butterworth (South Africa)
-
Development of an acoustic sensor to estimate catch directly from the trawl during continuous krill harvesting
Abstract: This paper describes experiments and plans for development of an acoustic sensor to ... support precise catch reporting for the continuous krill harvesting fishery. Author(s): O.R. Godø, B ... . Krafft and F. Grebstad Title: Development of an acoustic sensor to estimate catch directly from the ... Secretariat Workflow Status: Content Approved Document Release Consent: No Delegation responsibility for ...
Meeting Document : WG-EMM-2019/15 : Author(s): O.R. Godø, B. Krafft and F. Grebstad
-
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 : Author(s): G.P. Ewing, D.C. Welsford and A.J. Constable (Australia)
-
An assessment of the use of ocean gliders to undertake acoustic measurements of zooplankton: the distribution and density of Antarctic krill in the Weddell Sea
Abstract: A calibrated 120 kHz single-beam echo-sounder was integrated into an ocean glider and ... deployed in the Weddell Sea, Southern Ocean. The glider was deployed for two short periods in January 2012 ... density estimates by up to 8-fold. Glider-based, echo-sounder–derived krill density profiles for the two ... significant difference from observed profiles. Simulated glider dives required at least an order of magnitude ...
Meeting Document : WG-EMM-14/P02 : Author(s): D. Guihen, S. Fielding, E. Murphy, K. Heywood and G. Griffiths
-
An initial analysis of data provided from the deployment of scientific observers in the krill fishery
for future sampling scheme, including the potential for an adaptive responding to the variability in ... Abstract: An analysis of the observer data provided from the krill fishery was undertaken using a ... (CCAMLR Secretariat) Title: An initial analysis of data provided from the deployment of scientific ...
Meeting Document : WG-EMM-12/60 : Author(s): S. Thanassekos (CCAMLR Secretariat), S. Candy (Australia), E. Appleyard (CCAMLR Secretariat), S. Kawaguchi (Australia) and K. Reid (CCAMLR Secretariat)
-
Demersal fishing interactions with marine benthos in the Southern Ocean: an assessment of the vulnerability of benthic habitats to impact by demersal gears
shelf • An assessment of the vulnerability of benthic habitats to impact by demersal gears in the Sub ... -Antarctic and high latitudes of the Southern Ocean • Recommendations for practical mitigation strategies to ... trawl on longline gear, and the footage captured indicates there is great potential for such systems to ... ): Delegation of Australia Title: Demersal fishing interactions with marine benthos in the Southern Ocean: an ...
Meeting Document : SC-CAMLR-XXVI/BG/30 : Author(s): Delegation of Australia
-
AN ASSESSMENT OF ARTIFICIAL BAIT (NORBAIT™) AS A MEANS OF REDUCING THE INCIDENTAL CATCH OF MACROURUS AND OTHER BYCATCH SPECIES IN HIGH LATITUDE TOOTHFISH FISHERIES
line with control mags baited with squid, the vessel’s preferred bait for toothfish and alternating ... mags using an artificial or reconstituted bait (Norbait 800C™). Results from Subarea 48.4 indicated ... trials were carried out. In this area although Norbait reduced the incidental bycatch of Macrourus, an ... . These reductions effectively meant an increase in fishing effort and time to achieve the same target ...
Meeting Document : WG-FSA-08/52 : Author(s): J.M. Fenaughty (New Zealand)
-
Calibration of an acoustic echo-integration system in a deep tank, with system gain comparisons over standard sphere material, water temperature and time
Abstract: This paper outlines the theory and procedures for calibrating an echo integration ... acoustic system with a standard sphere. It presents the results of an extensive calibration of a Simrad ... biomass estimation. Author(s): D.A. Demer and R.P. Hewitt (USA) Title: Calibration of an acoustic echo ...
Meeting Document : WG-KRILL-92/17 : Author(s): D.A. Demer and R.P. Hewitt (USA)