Search results
-
Comparison of age readings by two otolith preparation techniques and readers
Abstract: During the 2012 CCAMLR toothfish ageing workshop, otoliths from 31 Antarctic toothfish were exchanged between Russia and New Zealand ageing programmes to compare consistency in ages estimated by different readers and using different methods. Both “break and burn” and “bake and embed”
Meeting Document : WG-FSA-14/53 : Author(s): S.J. Parker (New Zealand), A.F. Petrov (Russia), C.P. Sutton (New Zealand) and E.N. Kuznetsova (Russia)
-
The 2014 annual random stratified trawl survey in the waters of Heard Island (Division 58.5.2) to estimate the abundance of Dissostichus eleginoides and Champsocephalus gunnari
Abstract: The annual random stratified trawl survey (RSTS) at HIMI was conducted during June of 2014, with the completion of 158 stations. An additional five stations were completed at Shell Bank, which had not been sampled since 2005. The catches of C. gunnari were less than half of those in 2013
Meeting Document : WG-FSA-14/41 : Author(s): G.B. Nowara, T.D. Lamb and D.C. Welsford (Australia)
-
Updated models of the habitat use of Patagonian toothfish (Dissostichus eleginoides) on the Kerguelen Plateau around Heard Island and the McDonald Islands (Division 58.5.2)
Abstract: The Kerguelen Plateau supports the largest fishery for Patagonian toothfish (Dissostichus eleginoides) in the CCAMLR area, with landings of >5000 t.yr-1 from the French EEZ (Division 58.5.1) around îles Kerguelen and 2730 t.yr-1 from the Australian EEZ around Heard and McDonald
Meeting Document : WG-FSA-14/42 : Author(s): C. Péron and D.C. Welsford (Australia)
-
Development of the Patagonian toothfish (Dissostichus eleginoides) tagging program in Division 58.5.2, 1997–2014
Abstract: Patagonian toothfish have been tagged during commercial fishing and research activities adjacent to Heard Island and the McDonald Islands (HIMI, CCAMLR Division 58.5.2) since 1998, with 27,679 toothfish tagged and released, and 4925 recaptures. The data derived from this program has been
Meeting Document : WG-FSA-14/43 : Author(s): D.C. Welsford, C. Péron, P.E. Ziegler and T.D. Lamb (Australia)
-
A preliminary assessment of mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2014 random stratified trawl survey
Abstract: The annual Random Stratified Trawl Survey was undertaken in Division 58.5.2 in the vicinity of Heard Island during June 2014. This paper provides a preliminary assessment of mackerel icefish population structure, abundance and yield for the area of Division 58.5.2 to the west of 79° 20’
Meeting Document : WG-FSA-14/44 : Author(s): D.C. Welsford (Australia)
-
An update of the ageing program for Patagonian toothfish (Dissostichus eleginoides) at the Australian Antarctic Division, including a summary of new data available for the Integrated Stock Assessment for the Heard Island and the McDonald Islands fishery (Division 58.5.2)
Abstract: The Australian Antarctic Division (AAD) has recently received funding to continue an ageing program for the purposes of routine processing of Patagonian toothfish (Dissostichus eleginoides) otoliths from the Heard Island and McDonald Islands fishery. With the reinitiation of this program
Meeting Document : WG-FSA-14/45 : Author(s): B.M. Farmer, E.J. Woodcock and D.C. Welsford (Australia)
-
Investigating the uncertainty of age determinations for Patagonian toothfish (Dissostichus eleginoides) and the implications for stock assessment
Abstract: We revised the method of Candy et al. (2012) to estimate the ageing error matrix (misclassification matrix) to address some issues regarding true ages not being the mode at the extremes of the matrix and a lack of smoothness in the probabilities for ages above 25 years. Positive errors
Meeting Document : WG-FSA-14/46 : Author(s): P. Burch, P. Ziegler, W. de la Mare and D. Welsford (Australia)
-
Demersal fishing 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
Author(s): D.C. Welsford, G.P. Ewing, A.J. Constable, T. Hibberd and R. Kilpatrick (Eds) Title: Demersal fishing 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 Approval: Approved
Meeting Document : WG-FSA-14/P06 : Author(s): D.C. Welsford, G.P. Ewing, A.J. Constable, T. Hibberd and R. Kilpatrick (Eds)
-
Report on the CCAMLR marine debris monitoring program
Abstract: Data on beach surveys, debris associated with seabird colonies, marine mammal entanglements and hydrocarbon soilings were received for 2014 from South Africa, the United Kingdom, and Uruguay. Non-fishing items such as plastics, packaging materials and wood remain the most common type of
Meeting Document : WG-FSA-14/68 : Author(s): Secretariat
-
Macrourus ID guide for observers for CCAMLR Subareas 48.3 and 48.4
Author(s): J. McKenna, K.A. Ross and M. Belchier (United Kingdom) Title: Macrourus ID guide for observers for CCAMLR Subareas 48.3 and 48.4 Approval: Approved
Meeting Document : WG-FSA-14/25 : Author(s): J. McKenna, K.A. Ross and M. Belchier (United Kingdom)