Search results
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Further development and progress towards evaluation of an Antarctic toothfish (Dissostichus mawsoni) stock model for the Ross Sea
investigated. The first scenario considered the Ross Sea fishery as a single homogeneous area (single-area ... representation of the some of the observations, although there was a lack of any observations defining migration ... . The first scenario considered the Ross Sea fishery as a single homogeneous area (single-area). The second ... representation of the some of the observations, although there was a lack of any observations defining migration ...
Meeting Document : WG-FSA-SAM-05/12 : Author(s): A. Dunn, D.J. Gilbert and S.M. Hanchet (New Zealand)
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INCORPORATING SAMPLING VARIATION AND RANDOM READER ERROR INTO CALCULATION OF EFFECTIVE SAMPLE SIZE IN THE APPLICATION OF AGE LENGTH KEYS TO ESTIMATION OF CATCH-AT-AGE PROPORTIONS
as observations that contribute to the objective function via a multinomial likelihood. The multinomial likelihood ... requires a nominal sample size for each fishery and year combination. A method is described for estimating ... multinomial replicates of the observed age length key (ALK) with each ALK used to generate a replicate age ... Catch-at-age proportions are generally incorporated into an integrated assessment as observations ...
Meeting Document : WG-SAM-09/08 : Author(s): S.G. Candy (Australia)
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The relative by-catches of taxa associated with vulnerable marine ecosystems by autolines and Spanish longlines
Abstract: We reanalyzed data collected by the longline fishery in Subarea 88.1 to compare ... with positive bycatch, as well as the weights of bycatch when bycatches were observed, were higher for Autolines ... and the probabilities of observing positive bycatches decreased with depth for both gears. We also found that the rate ... We reanalyzed data collected by the longline fishery in Subarea 88.1 to compare the bycatches ...
Meeting Document : WG-FSA-13/41 : Author(s): T. Gerrodette and G.M. Watters (USA)
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Conservation Measure Conservation Measure 44/XI (1992)
in the 1992/93 Season The Commission, Endorsing the application of Chile to conduct a new fishery ... /X, Welcoming the invitation of Chile for one scientist to participate as an observer onboard the vessel ... of proposals to establish a new fishery for this species and Statistical Subarea, Agreeing that no other ... : 1. The new fishery by Chile for Dissostichus eleginoides in Statistical Subarea 48.4 in 1992/93 shall ...
Conservation Measure : 44/XI (1992)
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RAPID WARMING OF THE OCEAN AROUND SOUTH GEORGIA,SOUTHERN OCEAN, DURING THE 20TH CENTURY: FORCINGS, CHARACTERISTICS AND IMPLICATIONS FOR LOWER TROPHIC LEVELS
to 2006). Based on these data, we observe significant warming between the early and late 20th century ... South Georgia is substantial – more so than documented previously for the circumpolar warming ... . It is likely that all of these play a part in the observed temperature increase. However, the role ... ). Based on these data, we observe significant warming between the early and late 20th century ...
Meeting Document : WG-EMM-08/P03 : Author(s): M.J. Whitehouse, M.P. Meredith, P. Rothery, A. Atkinson, P. Ward and R.E. Korb
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Report on an Antarctic cetacean survey on board a Chilean fishing vessel in February 2016
’ around the South Orkney Islands and Elephant Island, a trained marine mammal observer conducted ... mixed-species groups and feeding aggregations of large whales were observed, comprising 217 individuals ... Workflow Status: Content Approved Delegation responsibility for releasing documents: Chile ... ; around the South Orkney Islands and Elephant Island, a trained marine mammal observer conducted ...
Meeting Document : WG-FSA-16/19 : Author(s): S. Viquerat, H. Herr, K.-H. Kock and P. Arana
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Marine debris and entanglements at Bird Island and King Edward Point, South Georgia, Signy Island, South Orkneys and Goudier Island, Antarctic Peninsula 2016/17
November 2016 to 1 March 2017), which is the highest number since observations began in 2010/11 ... . Entanglements of two Antarctic fur seals were observed at Bird Island and one at Signy Island, with three ... albatrosses (90 items; 69 %). There were no observed incidences of hydrocarbon soiling or entangled seabirds ... Delegation responsibility for releasing documents: United Kingdom ...
Meeting Document : SC-CAMLR-XXXVI/BG/35 : Author(s): C. Waluda
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An updated assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity and extension taking commercial catch-at-length data into account
are at variance with the observed length frequency distributions for the fishery. It is important ... with the observed length frequency distributions for the fishery. It is important that the assessment model ...
Meeting Document : WG-FSA-02/76 : Author(s): A. Brandão, D.S. Butterworth, B.P. Watkins and L. Staverees (South Africa)
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Have Antarctic toothfish returned to McMurdo Sound?
, has led to conclusions that the commercial bottom longline fishery for toothfish in the Ross Sea has ... in McMurdo Sound in 2014 have shown toothfish catch rate, fish size and fish age similar to those observed ... to conclusions that the commercial bottom longline fishery for toothfish in the Ross Sea has drastically altered ... have shown toothfish catch rate, fish size and fish age similar to those observed prior to 2002 ...
Meeting Document : WG-FSA-15/P01 : Author(s): S.J. Parker, S. Mormede, A.L. DeVries, S.M. Hanchet and R. Eisert
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Revised input parameters and implications for the Antarctic toothfish (Dissostichus mawsoni) stock assessment in Subareas 88.1 and 88.2
of the Antarctic toothfish stock assessment for the Ross Sea fishery. In particular we review catch history, length ... in length frequencies over the duration of the fishery. Including terms for nation, vessel, or vessel type ... variables. The catch and CPUE indices for the Ross Sea Antarctic toothfish fishery were updated, as are some ... of observations of the 2006 fish recaptured in 2007 had the greatest impact on the assessment model results. Dunn ...
Meeting Document : WG-SAM-07/6 : Author(s): A. Dunn and S.M. Hanchet (New Zealand)