Resultados de la búsqueda
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Status of the coastal stocks of Dissostichus spp. in East Antarctica (Divisions 58.4.1 and 58.4.2)
with the Ross Sea, where an analytical assessment has been possible for several years, and through ... (only five where time at liberty was a year or more). These recaptures were inconsistent with ... participation in the fishery, with only some Small-scale Research Units (SSRUs, consisting of 10° longitude ... there are two stocks in the area, one in Division 58.4.1 and one in Division 58.4.2, with the division ... alternate SSRUs have been open for fishing over the last three years, some early data (pre 2005) do exist ... quantities. There is a clear distinction between the eastern and western parts of SSRU 5841C, with the area ... closed for the last three years. Dissostichus eleginoides have only been recorded from this eastern ... , with a higher proportion of later maturity stage animals (particularly stages II and III) in the east ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 71–100 : Autor(es): Agnew, D.J., C. Edwards, R. Hillary, R. Mitchell and L.J. López Abellán
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Estimates of fish stock biomass around South Georgia in January/February 1985
fishery is dependant on the abundance of the recruiting year class. Conservation measures adopted by ... were seen domi na ted by 3 years old. fish (age class II) which is presumably the recruit i ng year ... composition (fig.6) indicates that with the exception of the early juve- - 6 - niles (age class O and 1 ... . El tamafio - 3 - de las reservas de N. gibberifrons y Ps. georgianus estaban a un nivel de ... to be adopted as a conserva- tive approach, - 5 - 3 Results Evaluations were carried out for ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/2 (Selected Scientific Papers, SC-CAMLR-SSP/2) : 1-32 : Autor(es): Kock, K.-H.
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e-sc-xiii-a4.pdf
... 2-, 3- and 4-year-old fish for 1990, 1991, 1992 and 1994 to provide indications of levels of ... Growth Reproduction and Early Life Trophic Relationships Management Units Seabed Areas ASSESSMENT ... WITH FUR SEALS BY-CATCH OF YOUNG FISH IN THE KRILL FISHERY INTERACTIONS WITH WHALES RESEARCH ... REQUIREMENTS SOFTWARE AND ANALYSES REQUIRED WORKING GROUP ORGANISATION 3 FUTURE MEETINGS OTHER
application/pdf attached to:WG-FSA-94Meeting Report : WG-FSA-94
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A preliminary assessment of age and growth of Antarctic silverfish (Pleuragramma antarcticum) in the Ross Sea, Antarctica
-growing with a moderate longevity; the maximum estimated age was 14.3 years. Von Bertalanffy parameters ... derived for both sexes combined are: L ∞ 22.1 cm SL; K 0.167 y –1; t 0 –0.4 years. Parameter estimates ... –11.0 and 15.1–15.5 cm. Mean lengths of 4.9 and 7.3 cm (at ages 1.3 and 2.3 years respectively) are ... consistent with those presented in the literature. The age-frequency distribution exhibited a mode from age 6 ... year of reader 1’s first readings, and none dif- fered by more than 3 years. The betweenreader APE ... relatively slowgrowing with a moderate longevity; the maximum estimated age was 14.3 years. Von Bertalanffy ... in years by adding 0.3. Interpretation of ‘annuli’ was very difficult for the first 2–3 zones. It ... sagittal otoliths from age group 3+ (3.3 years old) and 8+ (8.3 years old) Antarctic silverfish respec ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 75–86 : Autor(es): Sutton, C.P. and P.L. Horn
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e-sc-xii-a5-appE.pdf
... limited. For example, with the data available from the first year of fishing around South Georgia ... . Everson (UK), Agenda Item 2 (iv); Dr M. Basson (UK), Agenda Item 3; Dr A. Rosenberg (USA), Agenda Item ... harvest levels and methods in accordance with Article II of the Convention, for review by the Scientific ... interest in the future. 3 2.3 The two species have similar geographic distributions and are known
application/pdf attached to:WS-CRAB-93Meeting Report : WS-CRAB-93
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Analysis of results from demersal fish surveys at South Georgia, undertaken by the United Kingdom and the USSR, January and February 1990
hauls interspersed with a few large catches. The small number of large catches cause a disproportionate ... five years. He felt that there was some tendency for the fish to migrate within Subarea 48.3 with the ... interspersed with a few large catches. The small number of large catches cause a disproportionate increase in ... draft agenda had been circulated in advance of the workshop and this was agreed with minor ... and sample data. No age data were available because samples had not been fully analyzed. 224 3 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 223–254 : Autor(es): (Report of a Joint UK/USSR Workshop, 23 to 27 July 1990)
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Distribution and size–age composition of Antarctic krill (Euphausia superba) in the South Orkney Islands region (CCAMLR Subarea 48.2).
distribution of size–age groups in association with particular water masses indicated that age 2+ krill ... dominated in cold Weddell Sea waters in the southern parts of the fishing area, while older age classes (3 ... life-span of E. superba range from 3 to 8 years (Marr, 1962; Makarov, 1983; Aseev, 1984; Ikeda, 1984 ... in 2009 and 0.8 in 2010 (Figure 4a, b). Swarms with predominantly older (3+, 4+ and 5+) and younger ... (2+, 3+) cohorts of krill were found. Furthermore, there were mixed swarms with inter- mediate mean ... absent in both years (Figure 3). The absence of the 1+ age cohort in the area around the South Orkney ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 123–134 : Autor(es): Sologub, D.O. and A.V. Remeslo
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Effects of recruitment variability and natural mortality on generalised yield model projections and the CCAMLR decision rules for Antarctic krill
(Euphausia superba) fishery. The current precautionary catch limit was based on supplying the GYM with a ... krill around the Antarctic Peninsula (Subarea 48.1) along with increasing rates of natural mortality ... the annual size distributions of krill in penguin diets. Simulations with either no fishing, or with ... to 45%) and finally to 3 (5% annual survival). The scenarios with a variable range of annual ... = 3, was the escapement rule with catches at the precautionary catch limit appreciably triggered for ... either a high proportion or a low proportion of recruits, with fewer years having intermedi- ate ... years with low total abundance would have less effect on future population sizes than smaller ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 81–96 : Autor(es): Kinzey, D., G. Watters and C.S. Reiss
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e-imaf-01 report.pdf
... opportunity, together with information on by-catch mitigation measures in use in each of these three years ... WG-FSA-01/22, is summarised in Table 56 in comparison with similar data from previous years, when ... with the specifications in Conservation Measure 29/XIX (Table 57). In the last four years the highest ... Rustava) have failed to comply with this simple and important measure. 7.69 As in previous years the
application/pdf attached to:Ad Hoc WG-IMAF-01Meeting Report : Ad Hoc WG-IMAF-01
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A potential feedback approach to ecosystem-based management: Model Predictive Control of the Antarctic krill fishery
optimisationbased approaches such as MPC are computationally capable of dealing with EBM-type problems. They are ... . Mar. Sci., 57 (3): 778–791. Couchman, P.D., M. Cannon and B. Kouvaritakis. 2006. Stochastic MPC with ... capable of dealing with EBM-type problems. They are also useful for assessing the feasibility of ... unacceptable levels. Hill and Cannon 120 Maguire, 2002), which is concerned with control- ling the states ... (Walters, 1986). Robust control aims to achieve specified objectives for the state of systems with ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 119–137 : Autor(es): Hill, S.L. and M. Cannon