Search results
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Results of reading tests of TOP otolith sections and time schedule of reading for Dissostichus otoliths caught in regions of data-poor fisheries
-at-age models in 2015 and later. Author(s): K. Taki and T. Ichii (Japan) Title: Results of reading ... Abstract: The correct age-length keys are essential for the stock assessment of Dissostichus spp ... regions of data-poor fisheries. Therefore the analysis is an urgent task. We have made five reading tests ... using images of thin-sectioned TOP otoliths in December 2012 and May 2013. The coefficient of variation ...
Meeting Document : WG-SAM-13/19 : Author(s): K. Taki and T. Ichii (Japan)
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Abundance and richness of key Antarctic seafloor fauna correlates with modelled food availability
show that fluctuating seabed currents are crucial in the redistribution of surface productivity at the ... Abstract: Most seafloor communities at depths below the photosynthesis zone rely on food that ... sinks through the water column. However, the nature and strength of this pelagic–benthic coupling and ... its influence on the structure and diversity of seafloor communities is unclear, especially around ...
Meeting Document : WS-SM-18/P01 : Author(s): J. Jansen, N.A. Hill, P.K. Dunstan, J. McKinlay, M.D. Sumner, A.L. Post, M.P. Eléaume, L.K. Armand, J.P. Warncock, B.K. Galton-Fenzi and C.R. Johnson
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Summary of the seabird and marine mammal observations during observed toothfish (Dissostichus spp.) longline fishing operations in CCAMLR Subareas 88.1 and 88.2
composition reported each year because of variation in the spatial distribution of the seabirds. At-sea ... Abstract: Twenty-eight species of seabird were reported from observations during longline setting ... distribution of fishing effort was dictated by the presence of sea ice and there are differences in the seabird ... identification of some species is difficult and some of the species that were reported from outside their known ...
Meeting Document : WG-FSA-04/42 : Author(s): S.J. Baird (New Zealand)
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A new approach to selecting Marine Protected Areas (MPAs) in the Southern Ocean
and containing approximately 140 000 records of seabird sightings at sea, this study assesses the ... . At-sea ranges, species diversity and the distributions of endangered species may be appropriate ... 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 ...
Meeting Document : WS-BSO-07/P3 : Author(s): Harris, J., M. Haward, J. Jabour and E.J. Woehler
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Coastal weather drives foraging behaviour of chinstrap penguins, Pygoscelis antarctica
Peninsula, undertook fewer, longer foraging trips during the downwelling-affected season compared ... their breeding colonies on Powell Island, Antarctic Peninsula, undertook fewer, longer foraging trips during ...
Meeting Document : WG-EMM-18/P14 : Author(s): A.D. Lowther, P. Trathan, A. Tarroux, C. Lydersen and K.M. Kovacs
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Modifications to the Generalised Yield Model in 2004, version GYM501E.EXE
Abstract: The Generalised Yield Model is used by the WG-FSA in the assessments of Champsocephalus ... of reviewing the methods for estimating the time series of recruitments of D. elegionoides for WG-FSA ... in 2004 an error in the calculation of the recruitment series from survey data was detected. This ... error does not affect the assessments undertaken in recent years. This paper presents the nature of the ...
Meeting Document : WG-FSA-04/91 : Author(s): A.J. Constable (Australia)
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An integrated stock assessment for the Patagonian toothfish (Dissostichus eleginoides) in Division 58.5.2 using CASAL
-at-length data. The estimated long-term yield was 2500 tonnes with depletion probability of 0.081 and ... Division 58.5.2. It updates the model used at WG-FSA in 2006 using data from the 2007 season as well as ... of the coefficient of variation (CV) for length given age, (ii) use of non-informative priors for ... ground, and (v) the use of an improved method of determining effective sample size for commercial catch ...
Meeting Document : WG-FSA-07/53 Rev. 1 : Author(s): S.G. Candy and A.J. Constable (Australia)
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Scientific background document in support of the development of a CCAMLR MPA in the Weddell Sea (Antarctica) – Version 2018 – Reflection on the recommendations by WG-EMM-17 and SC-CAMLR-XXXVI
raised at WG-EMM-17 and SC-CAMLR-XXXVI (SC-CAMLR-XXXVI, Annex 6, §§ 5.1-5.14). The implementation of ... recommendations and questions raised by WG-EMM-17 and SC-CAMLR-XXXVI was already presented at the Workshop of ... Spatial Management (Cambridge, UK, 2 to 6 July 2018), where the great amount of work was acknowledge and ... the updates were welcomed. With this document, the Delegation of Germany would also like to inform the ...
Meeting Document : SC-CAMLR-XXXVII/BG/15 : Author(s): Delegation of Germany
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Distribution and biology of grey notothen (Lepidonotothen squamifrons) around South Georgia and Shag Rocks (Southern Ocean) CCAMLR Subarea 48.3.
during groundfish surveys at South Georgia and Shag Rocks from 1986 to 2012 were analysed to investigate ... east of Shag Rocks and the west of South Georgia. Reliable biomass estimates were not possible due to ... recognisable cohort progression and a trend of increasing size over time indicating a potential recovery of the ... stock. Mean length at first maturity for males and females (37-38cm) was very similar to that described ...
Meeting Document : WG-FSA-12/34 : Author(s): S. Gregory, J. Brown and M. Belchier (United Kingdom)
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Has Notothenia rossii around Elephant Island and the lower South Shetland Islands (Subarea 48.1) recovered from exploitation some 30 years ago?
in the first half of the 1970’s and at Elephant Island in 1979/80. The closure of the fishery for ... more or less evenly distributed over the area at the time of the survey. This assumption is violated in ... this species was one of the first conservation measures the ‘Commission for the Conservation of ... Division or part of it, is commonly estimated by targeting a number of species including N. rossii ...
Meeting Document : WG-FSA-12/19 : Author(s): K.-H. Kock (Germany) and C.D. Jones (USA)