Search results
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Assessing data requirements for tag-based estimates of local biomass in data-poor and exploratory fisheries
of achieving the same level of accuracy to 80%, a minimum of 20 tagged fish recaptures were required when ... the same level of accuracy to 80%, a minimum of 20 tagged fish recaptures were required when approximately ...
Meeting Document : WG-SAM-17/13 : Author(s): L. Robinson, P. Burch and K. Reid
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The recent decline in recruitment of Gobionotothen gibberifrons in the South Shetland Islands (CCAMLR Subarea 48.1)
Shetland Islands ceased after the 1989/90 season. One of the larger and most abundant species in the area ... ’s. In 2012, the proportion of immature fish (<30 cm) in the population was less than 10%. Recruitment ... a number of years of very low recruitment around Elephant Island and the lower South Shetland Islands ... ceased after the 1989/90 season. One of the larger and most abundant species in the area, Gobionotothen ...
Meeting Document : WG-FSA-12/20 : Author(s): K.-H. Kock (Germany) and C.D. Jones (USA)
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The biology of the spiny icefish (Chaenodraco wilsoni Regan, 1914)
attempts suggested a maximum age of about 8 – 10 years. Author(s): K.-H. Kock, L.V. Pshenichnov, C.D ... suggested a maximum age of about 8 – 10 years. ... and myctophids to some extent in other areas. Age determination still awaits validation. Preliminary ageing ... to some extent in other areas. Age determination still awaits validation. Preliminary ageing attempts ...
Meeting Document : WG-FSA-07/P1 : Author(s): K.-H. Kock, L.V. Pshenichnov, C.D. Jones, J. Gröger and R. Riehl. (Polar Biol., 31 (3): 381–393 (2007))
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Preliminary assessment of Dissostichus eleginoides on the Heard Island Plateau (Division 58.5.2) based on a survey in April–May 2003
tests of length at age assumptions indicated that using a specified length at age vector that did ... is required to evaluate the implications of current uncertainty in the rate of growth beyond this age ... tests of length at age assumptions indicated that using a specified length at age vector that did ... is required to evaluate the implications of current uncertainty in the rate of growth beyond this age ...
Meeting Document : WG-FSA-03/33 : Author(s): A.J. Constable, C.R. Davies, R. Williams and T. Lamb (Australia)
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Preliminary reports on abundance and biological information of toothfish in Division 58.4.3b by Shinsei Maru No. 3 in the 2011/12 and proposal of the consecutive survey in the 2012/13
and the wasteful use of baits also lead to the decline of the stability of the vessel. The above mentioned ... was identical between the two years nevertheless the numbers of hooks for the trotline configuration ... and the wasteful use of baits also lead to the decline of the stability of the vessel. The above mentioned ... and the CPUE was identical between the two years nevertheless the numbers of hooks for the trotline ...
Meeting Document : WG-SAM-12/15 Rev. 1 : Author(s): K. Taki, T. Iwami, M. Kiyota and T. Ichii (Japan)
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Age-structured production model for toothfish at South Georgia
decaying function of age, with three easily interpretable parameters. When only a single selectivity curve ... . Agnew (United Kingdom) Title: Age-structured production model for toothfish at South Georgia Approval ... of age, with three easily interpretable parameters. When only a single selectivity curve was fitted ... Age-structured production model for toothfish at South Georgia ...
Meeting Document : WG-FSA-SAM-05/18 : Author(s): A. Payne, G.P. Kirkwood, R. Hillary and D.J. Agnew (United Kingdom)
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Catches of target species in the Convention Area
20 September 2018, are presented with dates of closures of fisheries implemented by the Secretariat ... in accordance with Conservation Measure 24-01. Monthly catch totals for 2017/18, based on data reported to 30 ... reported to 3020 September 2018, are presented with dates of closures of fisheries implemented ...
Meeting Document : SC-CAMLR-XXXVII/BG/01 Rev. 4 : Author(s): CCAMLR Secretariat
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Preliminary assessment of Champsocephalus gunnari on the Heard Island Plateau (Division 58.5.2) based on a survey in May 2002
estimates of length at age parameters would be for most of the fish to be three year olds. However, given ... the abundance of fish in the population and the age structure of fish last year, it would be more reasonable ... to conclude that most of the fish are four years old, as this age class comprised the larger fraction (93 ... of length at age parameters would be for most of the fish to be three year olds. However, given ...
Meeting Document : WG-FSA-02/47 : Author(s): A.J. Constable, R. Williams and T. Lamb (Australia)
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Estimation of natural mortality for the Patagonian toothfish at Heard and McDonald Islands using catch-at-age and aged mark-recapture data from the main trawl ground
using proportions-at-length and fishery and year specific age length keys (ALKs) for years 1998 to 2008 ... proportions-at-length and fishery and year specific age length keys (ALKs) for years 1998 to 2008. A large ... . An alternative strategy was adopted whereby the catch-at-age and mark-recapture data were restricted to the main ... and recaptures of tagged fish were available. Catch and releases by age class for this fishery were obtained ...
Meeting Document : WG-FSA-10/41 : Author(s): S. Candy, D. Welsford, T. Lamb, J. Verdouw and J. Hutchins (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
Abstract: The CAMLR Scientific Committee in 2017 reviewed the scientific background document SC ... 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 ...
Meeting Document : SC-CAMLR-XXXVII/BG/15 : Author(s): Delegation of Germany