Search results
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Proposal for a skate tagging program in the Ross Sea region to estimate the local biomass trend for starry skates (Amblyraja georgiana)
biomass. Much of the A. georgiana catch occurs in SSRUs 88.1H and 88.1I in an area remaining open to ... between 1.6 and 2.8%. However, there is still uncertainty in the impact of exploitation on skates, and ... for skates in the Ross Sea region, we summarise skate catch and mark-recapture data through the 2016 ... annually). Catch data show that most of the skate catch consists of Amblyraja georgiana and that this ...
Meeting Document : WG-FSA-18/38 Rev. 1 : Author(s): S. Parker and M. Francis
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea for the years 1997–98 to 2010–13
also consistently shown higher rates of movement between SSRUs and lower rates of recapture in the ... location of release, perhaps indicative of a more mobile population in this location. In contrast the ... evidence of non-convergence in the key biomass parameters, although there was some evidence of non ... -convergence in the annual shift parameters for the shelf fishery. MCMC estimates of initial (equilibrium ...
Meeting Document : WG-FSA-13/51 : Author(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)
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Preliminary analysis on the Kerguelen shelf icefish Champsocephalus gunnari stock from 1996/97 to 2001/02: no evidence in the recovery!
Abstract: The icefish fishery on the Kerguelen shelf has been stopped after the1994/95 fishing ... The icefish fishery on the Kerguelen shelf has been stopped after the1994/95 fishing season when ...
Meeting Document : WG-FSA-02/65 : Author(s): G. Duhamel and J. Claudet (France)
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Seabird by-catch in the Patagonian toothfish longline fishery at the Prince Edward Islands: 1998–1999
% more than the number of hooks set in 1997-98, but only 79 seabirds (150/0 of the total killed in 1997 ... the same vessel, using the same gear design and at the same time of year, show marked decreases in ... Petrels P. cinerea (6%). A worrying development is the increase in numbers of Grey Petrels killed (only ... primarily linked to daytime sets, with most birds caught in the late afternoon or shortly after dusk. Use of ...
Meeting Document : WG-FSA-99/42 Rev. 1 : Author(s): P.G. Ryan and B.P. Watkins (South Africa)
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Monitoring and management in the Antarctic – making the link between science and policy
Abstract: Management of human impacts in the Antarctic requires an effective system of monitoring ... . Human impacts arise as a result of processes that originate in the region (endogenous) and those that ... originate outside the region (exogenous). A number of monitoring programmes have been established in both ... other parts of the world these are generally insufficiently precautionary to be applied in the Antarctic ...
Meeting Document : WG-EMM-07/P9 : Author(s): K. Reid (United Kingdom)
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea including data from the 2006/07 season
model resulted in a slightly lower estimate of initial biomass than the 2006 base case. The inclusion of ... suggested little evidence of non-convergence in the key biomass parameters. MCMC estimates of initial ... Abstract: We provide an update of the Bayesian sex and age structured population stock assessment ... model for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea (Subareas 88.1 and SSRUs 88.2A–B ...
Meeting Document : WG-FSA-07/37 : Author(s): A. Dunn and S.M. Hanchet (New Zealand)
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea including data from the 2005/06 season
those presented in 2005. The inclusion of the 2005 tag-release and the 2006 tag-recapture data had a ... Abstract: We provide an update of the Bayesian sex and age structured population stock assessment ... model for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea (Subareas 88.1 and SSRUs 88.2A–B ... reference case resulted in a much higher estimate of initial biomass, though this appeared to be almost ...
Meeting Document : WG-FSA-06/60 : Author(s): A. Dunn and S.M Hanchet (New Zealand)
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Seabird mortality in the longline fishery for Patagonian toothfish at the Prince Edward Islands: 1996–1997
. Given the low reproductive rate of these species, these levels of mortality (exacerbated by mortality in ... the impact of uncontrolled fishing renders the last option impractical in the short term. It is ... . This paper summarizes the mortality of seabirds associated with this fishery during the year July 1996 ... fishing trips. Some 3.2 million hooks were observed during the period November-June, representing 84 % of ...
Meeting Document : WG-FSA-97/51 : Author(s): Boix-Hinzen, C., Enticott, J.W., Ryan, P.G., Wanless, R., Purves, M., Nel, D.C.
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Seabird by-catch in the Patagonian toothfish longline fishery at the Prince Edward Islands: 1999–2000
sanctioned fishing trips. Fishing effort was 7.4 million hooks, a 45% increase on the number of hooks set in ... that reported in either 1996/97 or 1997/98. The absolute number of birds killed increased more than ... previous years, much of the variance could be explained in terms of fishing season (higher bycatch rate in ... Abstract: This paper summarises seabird bycatch during the fourth year (July 1999-June 2000) of ...
Meeting Document : WG-FSA-00/30 : Author(s): P. Ryan and B. Watkins (South Africa)
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea for the years 1997–98 to 2010–11
increased number of vessels in selected data set and partly as a result of the 2010 and 2011 observations ... little evidence of non-convergence in the key biomass parameters, although there was some evidence of non ... -convergence in the annual shift parameters for the shelf fishery. MCMC estimates of initial (equilibrium ... Abstract: We provide an update of the Bayesian sex and age structured population stock assessment ...
Meeting Document : WG-FSA-11/42 : Author(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)