Search results
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Seamount-specific biomass estimates from SSRU 88.2H in the Amundsen Sea derived from mark-recapture data
on almost every seamount in every year and usually in proportion to the level of tagging on the ... in recapture rates of annual cohorts of tagged fish through time in SSRU 88.2H indicates a decrease ... in the percentage of the population tagged due to the annual immigration of untagged fish, along with ... catch and emigration of tagged and untagged fish resulting in a decreasing trend in biomass overall ...
Meeting Document : WG-FSA-14/58 : Author(s): S.J. Parker and S. Mormede (New Zealand)
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Preliminary report on the South Sandwich Island research cruise by RRS Discovery (DY098) in January-February 2019
Abstract: This paper describes the structure and preliminary results of the research cruise to ... investigate the marine pelagic ecosystem around the South Sandwich Islands in the austral summer of 2019. The ... research cruise consisted of a large scale acoustic survey, following track lines established during the ... CCAMLR 2000 acoustic survey of Antarctic krill. Conductivity-Temperature-Depth (CTD) stations and net ...
Meeting Document : WG-EMM-2019/78 : Author(s): S. Fielding, C. Manno, G. Stowasser, B. Apeland, D. Ashurst, A. Ariza, M. Baines, L. Cornwell, A.B. Hulbert, K.R. Jones-Williams, C. Lacey, E.G. Langan, E.D. McRae, F.A. Perry, S. Pinder, E.J. Rowlands, F. Saccomandi, C. Silverstri, M.E.S. Sørensen, A. Slomska, J. Jackson, E.J Murphy, M. Reichelt, S. Thorpe, P. Trathan and G. Tarling
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Soviet krill fishery in 1977–1992, Part 1. Distribution, fishing effort, interannual situation patterns
types of FE distribution in subsequent groups of years: Type I: 1981 and 1982, partly 1979/1980: FE was ... : FE was developed mostly in subarea 48.2, since 1985 the role of 48.3 is increasing. Type III: 1987 ... discussed several groups of factors influencing FE distribution, it is very difficult to determine the key ... one between them. However, it was revealed that the determined types of FE distribution well ...
Meeting Document : WG-EMM-01/57 : Author(s): F.F. Litvinov, V.A. Sushin, G.A. Chernega and O.A. Berezhinskiy (Russia)
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THE ROSS SEA AS A UNIQUE EVOLUTIONARY SITE
Abstract: The case is made that the Ross Sea is an evolutionary site on par with those of the ... Antarctic marine groups. The Ross Sea fish fauna includes 95 species of fishes, dominated by 61 species of ... notothenioids, an endemic perch-like group. Relative to fish fauna in warmer regions, the nature of the Ross Sea ... fish diversity overshadows the absolute numbers of species. Antarctic notothenioid fishes, living at ...
Meeting Document : WG-EMM-09/13 : Author(s): J.T. Eastman and D.G. Ainley (USA)
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Krill CPUE standardisation and comparison with acoustic data based on data collected from Chinese fishing vessels in Subarea 48.1
Abstract: The usability of CPUE data as Antarctic krill abundance index was a widely discussed ... than catch per day data. The veridical distribution and movement of krill could be important source of ... differences between CPUE and acoustic data. The uncertainties and biases of CPUE data implied that CPUE used ... to indicate the krill stock abundance should be very caution. However, the dynamics of CPUE could ...
Meeting Document : WG-EMM-17/41 : Author(s): Y. Ying, X. Wang, J. Zhu and X. Zhao
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Preliminary results from the International Synoptic Krill Survey in Area 48, 2019
presented. Of the six vessels that participated in the survey, this report provides methods and preliminary ... results from four (vessels from the Association of Responsible Krill harvesting companies (ARK), Norway ... , Ukraine, and the United Kingdom), covering 8719 n. miles of acoustic transects and occupying 149 sampling ... distribution maps of krill NASC (nautical area scattering coefficient). A preliminary spatial cluster analysis ...
Meeting Document : WG-EMM-2019/47 : Author(s): G. Macaulay, G. Skaret, T. Knutsen, O.A. Bergstad, B. Krafft, S. Fielding, S.G. Choi, S. Chung, K. Demianenko, V. Podhornyi, K. Vishnyakova, L. Pshenichnov, A. Chuklin, A. Shishman and M.J. Cox
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Growth models for D. eleginoides for the Heard Island plateau region (Division 58.5.2) calibrated from otolith-based length at age data and validated using mark-recapture data
(VP) of sampling lengths. A segmented linear trawl fishing selectivity function was used where the ... upper-arm was estimated, as described elsewhere, from comparisons of longline LF samples to that for ... trawls for seasons where both fishing methods were used. Due to the small number of fish in the aged ... sample that were older than 20 years the general trend in the data of length with age did not exhibit ...
Meeting Document : WG-FSA-05/64 Rev. 1 : Author(s): S.G. Candy, T. Lamb, A.J. Constable and R. Williams (Australia)
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Catch removals due to killer and sperm whale interactions across sub-Antarctic fisheries
investigated the extent of this conflict in multiple commercial Patagonian toothfish (Dissostichus eleginoides ... , and Heard Island and McDonald Islands (Indian sector of the Southern Ocean) fisheries, statistical ... . The results indicated that these removals were large, totalling more than 6,600 t of toothfish between ... 2009 and 2016 with an overall annual mean of 837 t [95% CI 480-1,195 t], comprised of 317 t [232-403t ...
Meeting Document : WG-FSA-2019/33 : Author(s): P. Tixier, P. Burch, F. Massiot-Granier, P. Ziegler, D. Welsford, M.-A. Lea, M.A. Hindell, C. Guinet, S. Wotherspoon, N. Gasco, C. Péron, G. Duhamel, R. Arangio, R. Tascheri, S. Somhlaba and J.P.Y. Arnould
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By-catch observation during krill fishing cruise (48.1, 48.2 Statistical Subareas, 2011)
Abstract: 359 Antarctic krill catches were analysed for by-catch, it took 48.5% of observed ... catches and 31.3% of total catches. Fish by-catches were usual in the sector 48.1 (89.1% of cases); the ... most of by-caught fishes belonged to families Nototheniidae (NOX) (66.3%). Fish by-catches in the ... sector 48.2 were recorded in 50% examined catches; the most frequent were fishes of families Myctophidae ...
Meeting Document : WG-FSA-11/41 : Author(s): K. Vyshniakova (Ukraine)
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Krill fishery information
Abstract: The paper presents a compilation of information and work pertaining to the krill ... 2000 to November 2001) and an update on catches in the current 2000/01 season; • measures of overlap ... between the krill fishery and krill predators; • further development of the plan for the krill fishery in ... Area 48; • evaluation of available methods for forecasting closure dates; and • further development of ...
Meeting Document : WG-EMM-02/6 : Author(s): Secretariat