Search results
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Off the hook? Initiatives to reduce seabird by-catch in longline fisheries
Abstract: The recent history of global initiatives to reduce seabird by-catch in longline ... fisheries are reviewed, highlighting in turn the activities of environmental and industry non-governmental ... Fisheries, adopted by the Food and Agriculture Organization of the United Nations in June 1999, has much ... -governmental bodies where appropriate) to implement national plans of action in a way that would solve the ...
Meeting Document : WG-FSA-99/6 : Author(s): J. Cooper (South Africa), J.P. Croxall (United Kingdom) and K.S. Rivera (USA)
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in Subarea 88.2 SSRUs 88.2C–H for the years 2002–03 to 2012–13
biomass than previously estimated, mainly due to the signal in the last three years of tag data. These are ... the data in which we have the highest degree of confidence for this fishery, due to improvements in ... Abstract: This paper presents the Bayesian sex and age structured population stock assessment of ... 88.2C–H). We examined several models including the 2013 implementation of the 2011 base case (R1), using ...
Meeting Document : WG-FSA-13/52 : Author(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)
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Foraging patterns in the Antarctic Shag Phalacrocorax bransfieldensis at Harmony Point, Antarctica
the nests) by incrementing the number of daily foraging trips and the daily time invested in foraging ... Abstract: During the 1995 and 1996 summer seasons the foraging patterns of the Antarctic Shag ... foraged once a day, females early in the morning and males when their partners returned to their nests ... . Compared to those periods, when rearing chicks parents incremented the number of daily foraging trips ...
Meeting Document : WG-EMM-18/03 : Author(s): R. Casaux and M.L. Bertolin
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Draft integrated stock assessment for the Heard Island and McDonald Islands Patagonian toothfish (Dissostichus eleginoides) fishery in Division 58.5.2
than that obtained in 2017, with an MCMC estimate of 70 519 tonnes (95% CI: 65 634- 76 626 tonnes). The ... predicted drop in SSB status by 2021, the time of the next stock assessment, was largely independent of the ... the end of 2019 and observations until the end of 2018. The updated assessment model is based on the ... best available estimates of model parameters, the use of abundance estimates from a random stratified ...
Meeting Document : WG-FSA-2019/32 : Author(s): P. Ziegler
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Commercial fishing in the Ross Sea
currently exist in the Ross Sea. It also highlights some of the findings of Ross Sea independent research ... Abstract: COLTO members have been fishing for toothfish in the Ross Sea for the past 15 years ... . The New Zealand Seafood Industry Council, representing NZ toothfish operators in COLTO, have prepared ... operations in the Ross Sea region. The information sheet provides basic data on Antarctic Toothfish ...
Meeting Document : CCAMLR-XXXI/BG/35 : Author(s): Submitted by COLTO
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Antarctic fur seals in the South Shetland Islands: pup production and population trends
Abstract: Discovered in 1819, the South Shetland Islands soon became the focus of intensive ... censuses over a 15yr period (1987, 1992, 1994, and 1996) indicates the rate of increase in fur seal ... reports the results of a ground survey of all known fur seal colonies from Smith to Elephant Islands from ... %) and San Telmo Islands (21%). Dead pups accounted for 1.37% of the total. A comparison with previous ...
Meeting Document : WG-EMM-02/51 : Author(s): M.E. Goebel (USA), V.I. Vallejos (Chile), W.Z. Trivelpiece, R.S. Holt (USA) and J. Acevedo (Chile)
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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 ... . Based on the amount of toothfish found in the 8 km long section of net retrieved, upwards of 29 tonnes ... gillnets. However these figures are likely to be underestimates of total mortality in gillnets, due to the ... evidence of large numbers of sea-lice depredated fish in the net. Author(s): Snowdon, D., Hamill, J ...
Meeting Document : TASO-09/10 : Author(s): Snowdon, D., Hamill, J., McEachan, F., Welsford, D.
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Connectivity and population structure in Pleuragramma antarcticum along the west Antarctic Peninsula
, reduction in sea-ice along the WAP may lead to extinction of local populations through drastic mortality of ... populations at 1) the north tip of the Peninsula, and 2) the southern WAP encompassing Charcot Island and ... Marguerite Bay, with no mixing between. The presence of a single length mode at Charcot Island and Marguerite ... recruitment since 2001. The collapse in silverfish abundances previously found off Anvers and Renaud Islands ...
Meeting Document : WG-FSA-10/16 : Author(s): J. Ashford, J. Ferguson, A. Piñones, J. Torres and W. Fraser
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Potential modelling structures for a two-area stock assessment model for Antarctic toothfish (Dissostichus mawsoni) in the Amundsen Sea Region
in 2014/15 are expected to better inform the assessment of the entire stock including SSRUs 88.2C–G ... once additional age and tag data have been collected in SSRUs 88.2C–H as part of the two-year research ... Abstract: Two-area population models for Antarctic toothfish in the Amundsen Sea Region were ... developed further as current single area models did not fully explain the patterns in the observed data on ...
Meeting Document : WG-SAM-15/49 : Author(s): S. Mormede, S.J. Parker, A. Dunn and S.M. Hanchet (New Zealand)
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Using acoustic echo counting to estimate grenadier abundance in the Ross Sea (SSRU88.1I)
targets was similar to that predicted based on the expected size range of grenadiers. Variability in ... vessels in SSRU 88.1I. The next step will be to apply to these methods to a wider set of data across the ... Abstract: Grenadiers (Macrourus spp.) are the main bycatch species in the exploratory longline ... fishery for toothfish in the Ross Sea. Previous studies concluded that acoustics methods could be used to ...
Meeting Document : WG-FSA-14/62 : Author(s): Y. Ladroit, R.L. O’Driscoll and S. Mormede (New Zealand)