Résultats de la recherche
-
A von Bertalanffy growth model for toothfish at Heard Island fitted to length-at-age data and compared to observed growth from mark–recapture studies
using a von Bertalanffy (VB) growth model taking into account response-biased sampling of fish that were ... aged. Subsampling of random lengthfrequency (LF) data used to obtain the samples of fish for ageing ... used length-bin sampling involving a fixed sample size per bin. Estimation of the VB parameters used a ... definition of the likelihood function based on variable probability (VP) sampling due to the prespecified ... . Lamb and R. Williams Department of Environment and Water Resources Australian Antarctic Division 203 ... fi tted using a von Bertalanffy (VB) growth model taking into account response-biased sampling of fi ... sh that were aged. Subsampling of random length- frequency (LF) data used to obtain the samples of fi ... sh for ageing used length-bin sampling involving a fi xed sample size per bin. Estimation of the VB ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 43–66 : Auteur(s): Candy, S.G., A.J. Constable, T. Lamb and R. Williams
-
Fish and invertebrate by-catch from Australian fisheries for D. eleginoides and C. gunnari in Division 58.5.2
gunnari. This paper presents available by-catch information for the three fisheries including estimates of ... total removals by fishing season and ground, and length composition of rajids and macrourids ... . Preliminary results from a rajid tagging program are also presented. Total removals of by-catch in the trawl ... fisheries are estimated to be very low. From 1996/1997 to 2002/2003, a total of 115 tonnes of by-catch was ...
Meeting Document : WG-FSA-03/73 : Auteur(s): E.M. van Wijk and R. Williams (Australia)
-
Beach litter survey - Signy Island, South Orkney Islands 1995/96
other beach surveys were carried out. This was because of logistical difficulties caused by the late ... break out of sea-ice and the redevelopment of the British Antarctic Survey (BAS) research station on ... Signy Island. At Foca Cove, 26 items were found with a combined weight of 1.20 kg, and at Cummings Cove ... almost all debris found on Signy Island originates from accidental or deliberate dumping of rubbish or ...
Meeting Document : CCAMLR-XV/BG/16 : Auteur(s): Delegation of the United Kingdom
-
Pilot study on electrophoretic variation and stock structure in the mackerel icefish, Champsocephalus gunnari, South Georgia waters
Abstract: The use of allozymes as a tool in stock structure analysis was examined in the ... commercially-exploited mackerel icefish, Champsocephalus gunnari, together with a preliminary assessment of ... stock separation among samples in South Georgia waters. Four samples (116 individuals) of icefish were ... . Clearly resolved enzyme phenotypes were obtained at 18 loci, of which 7 exhibited polymorphism at the 0.95 ...
Meeting Document : WG-FSA-90/10 : Auteur(s): G.R. Carvalho and D.P. Lloyd-Evans (United Kingdom)
-
Towards a strategic framework for assessing uncertainty in ecosystem dynamics models: objectives are sensitive too
simulations of krill, its predators and fishery. It has been used to provide advice on the spatial allocation ... of the precautionary catch limit for krill. Foosa might therefore be a suitable simulation platform ... has 50 categories of input parameter and the four parameterisations used to provide spatial allocation ... advice each required values for 2,311 distinct inputs. In the absence of guidance about management ...
Meeting Document : WG-EMM-12/20 Rev. 1 : Auteur(s): S. Hill and J. Matthews (United Kingdom)
-
Correlation between krill and Champsocephalus gunnari stocks in the South Georgia Area 48.3
Abstract: After almost a ten-year gap in fishing for Champsocephalus gunnari in the area of South ... short-time fishing operation in February-March, 1999. Overall, 85 pelagic trawlings yielded 264 tons of ... determine a clear correlation between concentrations of adult fish and krill on the north-western shelf of ... South Georgia. At the same time, lasting of the feeding stocks of C. gunnari depended on weather ...
Meeting Document : WG-EMM-99/27 : Auteur(s): K.V. Shust, V.L. Senioukov, P.N. Kochkin andN.A. Petrukhina (Russia)
-
REPORT ON THE ABANDONED GILLNET RETRIEVAL OPERATION CONDUCTED BY AUSTRALIA IN CCAMLR STATISTICAL DIVISION 58.4.3B (BANZARE BANK)
gillnets as a fishing method to target toothfish in the Convention area. Estimating the impact of IUU ... fishing is hampered by a lack of data on the design, deployment, catch and bycatch rates of gill nets ... (Statistical Division 58.4.3b), and the toothfish and bycatch found when a section of the gillnet was retrieved ... . Based on the amount of toothfish found in the 8 km long section of net retrieved, upwards of 29 tonnes ...
Meeting Document : CCAMLR-XXVIII/BG/22 : Auteur(s): Delegation of Australia
-
A new approach to selecting Marine Protected Areas (MPAs) in the Southern Ocean
Abstract: Conservation of the high seas marine environment poses a significant challenge to ... policy-makers and managers. Marine conservation efforts are often hindered by the lack of data and the ... difficulties in addressing multiple, and typically conflicting uses. The majority of extant Marine Protected ... Areas (MPAs) are in coastal or tropical regions within national jurisdiction. Conservation of high seas ...
Meeting Document : WS-BSO-07/P3 : Auteur(s): Harris, J., M. Haward, J. Jabour and E.J. Woehler
-
Toothfish, skate and longline by-catch survey in Subarea 48.3
Abstract: This was the first deep-water trawl survey of the South Georgia Maritime Zone funded by ... the Government of South Georgia and the South Sandwich Islands (GSGSSI) as part of the South Georgia ... ecology of Patagonian toothfish (Dissostichus eleginoides) at South Georgia as well as providing ... information on bycatch species of the longline fishery, particularly grenadiers (Macrourids) and Skates ...
Meeting Document : WG-FSA-03/15 : Auteur(s): M. Belchier, M. Collins, M. Endicott, I. Everson, S. Hawkins, T. Marlow, T. Mulvey and R. Paterson (United Kingdom)
-
An exploratory fishing expedition for Dissostichus eleginoides around the South Sandwich Islands, Antarctica
Subarea 48.4), to establish the presence and abundance of the Patagonian Tootfish Dissostichus eleginoides ... with a view to opening a new fishery under the auspices of the Commission for the Conservation of ... following guidelines set out in the CCAMLR Scientific Observers Manual and in a memorandum of understanding ... between the Governments of Chile and the UK. A new fishery in Subarea 48.4 was found not be commercially ...
Meeting Document : SC-CAMLR-XII/BG/04 : Auteur(s): Delegations of Chile and United Kingdom