Résultats de la recherche

1. CPUEs, body length and greenness of Antarctic krill during 1987/88 season in the fishing ground north of Livingston Island

   , compared with those in later seasons, 45.1 to 46.7 mm, there was no significant difference in mean body ... in this area were conducted from early January to late March 1988. It was in this area that RV Kaiyo ... Maru conducted a co-operative survey with a Japanese trawler on the target strength of krill ... from early January to late March as a case study to identify whether or not they show a marked change ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 323–338 : Auteur(s): Endo, Y. and T. Ichii

2. Status of the coastal stocks of Dissostichus spp. in East Antarctica (Divisions 58.4.1 and 58.4.2)

   (only five where time at liberty was a year or more). These recaptures were inconsistent with ... with the Ross Sea, where an analytical assessment has been possible for several years, and through ... 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 ... of toothfish in an area, with animals only being replaced by immigration over the scale of a year ... quantities. There is a clear distinction between the eastern and western parts of SSRU 5841C, with the area ... alternate SSRUs have been open for fishing over the last three years, some early data (pre 2005) do exist ... 58.4.2. Fishing years extend from 1 December of the previous year to 30 November of the named year ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 71–100 : Auteur(s): Agnew, D.J., C. Edwards, R. Hillary, R. Mitchell and L.J. López Abellán

3. 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 ... composition (fig.6) indicates that with the exception of the early juve- - 6 - niles (age class O and 1 ... were seen domi na ted by 3 years old. fish (age class II) which is presumably the recruit i ng year ... fishery is dependant on the abundance of the recruiting year class. Conservation measures adopted by ... distributed over the whole shelf area with some larger concentrations in the southeast (fig. 5).The length ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/2 (Selected Scientific Papers, SC-CAMLR-SSP/2) : 1-32 : Auteur(s): Kock, K.-H.

4. 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 ... consistent with those presented in the literature. The age-frequency distribution exhibited a mode from age 6 ... 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 ... + year classes. Hubold (1985) examined silverfish occurring in the eastern and southern Weddell Sea and ... ) studied the early life­history of Antarctic silverfish occurring in the eastern and southern Weddell Sea ... 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 ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 75–86 : Auteur(s): Sutton, C.P. and P.L. Horn

5. 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 ... . DESCRIPTION OF SURVEYS Both surveys had been undertaken in accordance with the design submitted by Dr ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 223–254 : Auteur(s): (Report of a Joint UK/USSR Workshop, 23 to 27 July 1990)

6. 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 ... +; modal length 25–30 mm) and 2-year-old krill (age 2+; modal length 40–45 mm); the 3-, 4- and 5-year-old ... 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 ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 123–134 : Auteur(s): Sologub, D.O. and A.V. Remeslo

7. 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 ... individuals less than 36 mm in all areas and legs that were sampled suggest it was a year with relatively ... ), so a high-abundance year with 20% recruitment would produce twice the recruits as a low-abundance ... year with 90% recruitment during this period if mortalities, etc. were similar. Regarding time- series ... Peninsula might be serially correlated over time, with good recruitment periods of a year or two occurring ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 81–96 : Auteur(s): Kinzey, D., G. Watters and C.S. Reiss

8. 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 : Auteur(s): Hill, S.L. and M. Cannon

9. Factors affecting the incidental mortality of seabirds in the Dissostichus eleginoides fishery in the southwest Atlantic (Subarea 48.3, 1995 season)

   with the information collected by international scientific observers from each vessel. It was thus ... vessels, one vessel from each country having made two fishing trips, as indicated in Tables 1 and 3 ... XXlIl Mar del Sur Arbumasa XX Total Trip 1 Trip 2 0 3 15 2 6 0 0 2 6 0 0 3 0 0 0 0 3 0 0 0 0 4 0 0 ... national fishing authority and supplemented with the information collected by international scientific ... scientific with the help of the expertise of WC-FSA information on seabird mortality during fishing members ...

   Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 79–91 : Auteur(s): Moreno, C.A., P.S. Rubilar, E. Marschoff and L. Benzaquen

10. A preliminary investigation of the possible effects of rhizocephalan parasitism on the management of the crab fishery around South Georgia

    contrasted with the effects of harvesting healthy animals only. Equilibrium and transition dynamics of the ... total number of adult parasites in the previous year, again with a constant coefficient of ... healthy and infected animals are contrasted with the effects of harvesting healthy animals only ... INTRODUCTION The first fishing trip targeting crabs in Subarea 48.3, by the FV Pro Surveyor, presented in ... with increasing fishing mortality. This generally includes the very important assumption that both ...

    Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 175–192 : Auteur(s): Basson, M

Pages