Resultados de la búsqueda
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Report on fishing effort and seabird interactions during the season extension trials in the longline fishery for Dissostichus eleginoides in Statistical Division 58.5.2
Abstract: CCAMLR XXXIV (para. 5.68) endorsed new pre-season (1-14 April) and post-season (15-30 ... November) trial season extensions, in addition to existing pre-season (15-30 April) and post-season (1-14 ... -FSA-15/48). Australia undertook to report annually on the results of all the trials. This paper ... presents information on fishing effort and seabird interactions with fishing gear collected during the ...
Meeting Document : WG-FSA-17/20 : Autor(es): T. Lamb
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Estimating the impact of depredation by killer whales and sperm whales on longline fishing for toothfish (Dissostichus eleginoides) around South Georgia
, depressing CPUE by up to 20%. Sperm whales have been more frequently encountered in recent years, occurring ... and sperm whales on longline fishing for toothfish (Dissostichus eleginoides) around South Georgia ... Abstract: Observer data collected on longliners between 2003 and 2009 were analysed to look at ... macrocephalus) around South Georgia. Since 2003, cetaceans have been observed on 22% of 14 300 observed lines ...
Meeting Document : WG-FSA-10/P06 : Autor(es): J. Moir Clark and D.J. Agnew
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Evaluation of the effects of illegal, unregulated and unreported (IUU) fishing on the legal catch of fisheries for Dissostichus eleginoides
limit derived from an assessment based on the 2001 WG-FSA assessments, which is approximately 3 000 ... Abstract: CCAMLR currently establishes catch limits each year for Patagonian toothfish ... year to compensate for the effects of historical levels of IUU catches. To date, the rate of reduction ... catch was estimated using the GYM and applied as the legal catch limit for the following year, assuming ...
Meeting Document : WG-FSA-02/69 : Autor(es): A.J. Constable (Australia)
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A Petersen tag-recapture preliminary population assessment of Antarctic toothfish in CCAMLR Subarea 48.4 based on data for the 2009–2014 fishing seasons
tagging returns to be 1,027 tonnes during the 2013/14 season. In previous years the harvest rate used for ... tag-recapture preliminary population assessment of Antarctic toothfish in CCAMLR Subarea 48.4 based on ... data for the 2009–2014 fishing seasons Approval: Approved ...
Meeting Document : WG-FSA-14/30 Rev. 1 : Autor(es): V. Laptikhovsky, R. Scott, M. Söffker, T. Earl and C. Darby (United Kingdom)
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Calculating effective releases and recaptures for stock assessments based on tag detection and tagging mortality indices
estimate effective tag releases and effective numbers of fish inspected for tags based on those indices ... recaptures for stock assessments based on tag detection and tagging mortality indices Approval: Approved ... developed using a methodology which controls for the spatial and temporal variability of fishing operations ... included in the stock assessment for the Ross Sea region and Amundsen Sea region, with the understanding ...
Meeting Document : WG-SAM-14/30 : Autor(es): S. Mormede (New Zealand)
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Procedures for proposals and reporting on research plans in data-poor fisheries
, WG-SAM-17 recommended that the procedures for research plan proposals in data poor fisheries be ... compiled and further developed to bring together the advice from the Scientific Committee and its Working ... , and to provide recommendations for the Scientific Committee to consider with regard to a CCAMLR ... Conservation Measure 41-01, and provide recommendations for streamlining the review of new and ongoing research ...
Meeting Document : WG-FSA-17/13 : Autor(es): S.J. Parker and D.C. Welsford
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On Ageing Technique for Icefish (champsocephalus gunnari Lönnberg 1905) from South Georgia Island Shelf
for the third quarter of the year is appended Author(s): Zh.A. Frolkina (USSR) Title: On Ageing ... adjustment to age determination of fish longer than 30 cm with an enlarged otolith centre. An age-length key ... Abstract: Radii of annual elements were calculated on the basis of studying C. gunnari length ... . This was done using specimens from strictly’ defined age groups. These radii measurements suggest an ...
Meeting Document : WG-FSA-89/19 : Autor(es): Zh.A. Frolkina (USSR)
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A model at the level of the foraging trip for the indirect effects of krill (Euphausia superba) fisheries on krill predators
fishery. 3. The biomass of krill appropriate for the predators (and the fishery) fluctuates from one year ... Abstract: 1. Although the development of fisheries for krill in the southern oceans has prompted ... considerable work on the indirect effects of fisheries on krill predators, to date all work has focused on ... population level effects. Here, we present for. the first time a model at the level of the foraging trip for ...
Meeting Document : WG-EMM-96/20 : Autor(es): Switzer, P.V., Mangel, M.
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A revised estimate of short-term yield for the mackerel icefish (Champsocephalus gunnari) off Heard Island based on a trawl survey in 1998
in 2000 will be predominantly on Age 5 fish. After this time, catch limits may need to be set at an ... Shell Bank) in the vicinity of Heard Island enabled a revised estimate of yield for the coming 2 seasons ... cohorts are still sufficiently strong to provide for a yield greater than estimates of the long term ... precautionary yield. Estimates of yield for the Heard Island Plateau population are 732 tonnes for 1999 and 518 ...
Meeting Document : WG-FSA-98/54 : Autor(es): A. Constable and D. Williams (Australia)
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Preliminary assessment of long-term yield of Patagonian toothfish (Dissostichus eleginoides) for the Heard Island Plateau region (CCAMLR Division 58.5.2) based on a random stratified trawl survey in May 2004
58.5.2 in the vicinity of Heard Island in May 2004 to provide the information for an assessment of short ... for the area of Division 58.5.2 to the west of 79 o 20’ E using standard CCAMLR methods. It presents a ... range of sensitivity analysis for the assessment based on deliberations at WG-FSA 2003 with respect to ... Patagonian toothfish (Dissostichus eleginoides) for the Heard Island Plateau region (CCAMLR Division 58.5.2 ...
Meeting Document : WG-FSA-04/76 : Autor(es): C.R. Davies, T. Lamb, A.J. Constable and R. Williams (Australia)