Результаты поиска

1. An assessment of toothfish in Subarea 48.3 using CASAL

   Abstract:  The CASAL software has been successfully applied to an assessment of the stock of ... single fleet, as it is possible that overall trends in the CPUE series were not fully taken into account ... in the two fleet assessment. This alternative assessment produced worse fits to the catch length ... 45,893 t, and the spawning stock biomass was estimated to be 120,360 t, around 67% of its unexploited ...

   Meeting Document : WG-FSA-05/16 : Автор(ы): R.M. Hillary, G.P. Kirkwood and D.J. Agnew (United Kingdom)

2. Results of E.L. Holmberg 1995 fish survey in Subarea 48.3

   Abstract:  The survey comprised 48 bottom trawl hauls taken in subarea 48.3. About 80% of the ... hauls were intended as replicates of the position of hauls in the 1994 survey, allowing site by site ... aggregation of stations in a nested ANOVA model. An increase over last year's values was observed in the ... . The age and size structure of this species in the whole subarea 48.3 is characterized the predominance ...

   Meeting Document : WG-FSA-95/35 : Автор(ы): Marschoff, E., Madirolas, A., Balestrini, C., Tossonotto, G., Gonzalez, B., Calcagno, J.

3. Preliminary model of krill fishery behaviour in Subarea 48.1

   :  A simple model of the behaviour of the krill fishery in FAO Statistical Subarea 48.1 (South Shetland ... catches in the subarea. A number of management scenarios are considered which involve the closure of (i) a ... . However, in this scenario, the catch would be more concentrated in foraging areas of land-based predators ... Paper Title:  Preliminary model of krill fishery behaviour in Subarea 48.1 Abstract / Description ... compares well with the mean distribution of all catches in the study area over the years 1988 to 1992 as ... simple model of the behaviour of the krill fishery in FAO Statistical Subarea 48.1 (South Shetland ... catches in the subarea. A number of management scenarios are considered which involve the closure of (i ... at present. However, in this scenario, the catch would be more concentrated in foraging areas of ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 71–79 : Автор(ы): Agnew, D.J. and V.H. Marín

4. Selectivity and two biomass measures in an age-based assessment of Antarctic krill (Euphausia superba)

   selectivities were examined. Parameters were estimated in phases with the sequential order of the phases ... quantities was tested using simulated data. Annual trends in the estimates of total biomass, spawning biomass ... selectivity to investigate the population dynamics of Antarctic krill (Euphausia superba) near the Antarctic ... the South Shetland Islands from 1992 to 2011. Two indices of krill biomass based on (1) trawl-net ...

   Meeting Document : WG-EMM-15/P07 : Автор(ы): D. Kinzey, G.M. Watters and C.S. Reiss

5. Diet composition of Champsocephalus gunnari in Subarea 48.3, Dr Eduardo Holmberg survey, February/ March 1994

   Abstract:  The diet composition of the icefish Champsocephalus gunnari caught in the Subarea 48.3 ... in February/March 1994 was analyzed using the frequency of occurrence (%) method. Krill (Euphausia ... Georgia, in parallel with the virtual absence of mysids and Thysanoessa spp.. Krill was available for fish ... particular spatial distribution of krill in the area in the period of study, but no previous data are ...

   Meeting Document : WG-FSA-94/27 : Автор(ы): E. Barrera-Oro, R. Casaux and A. Roux (Argentina)

6. Population assessment of Patagonian toothfish in Subarea 48.4

   Abstract:  This paper presents an update of the assessment of toothfish (Dissostichus spp.) in ... from the Petersen biomass estimates of Dissostichus spp. in the southern region and application of the ... development of the assessment of toothfish in Subarea 48.4 are considered. Author(s):  R. Scott (United ... Subarea 48.4. The Subarea is divided into two management regions and assessed using a CASAL assessment of ...

   Meeting Document : WG-FSA-12/36 : Автор(ы): R. Scott (United Kingdom)

7. Changes to seabird avoidance regulations in Alaska demersal longline fisheries based on scientific research on effectiveness of mitigation measures

   Washington Sea Grant Program (WSGP) on the effectiveness of seabird avoidance measures in the longline ... existing regulations for seabird avoidance measures required in the groundfish and halibut demersal ... longline fisheries off Alaska. One of the main recommendations is for the required use of paired streamer ... fisheries off Alaska. For complete details of the research, results, and recommendations, see the WSGP final ...

   Meeting Document : WG-FSA-02/53 : Автор(ы): K.S. Rivera (USA)

8. A review of conversion factors used in CCAMLR toothfish fisheries

   reconciliation between the reported catch for a vessel and the weight of product reported in a catch document ... submitted to the CDS should be based on a conversion of the ‘green weight’ for each haul in the C2 data to a ... Abstract:  The product to green-weight conversion factors used in the toothfish fishery are ... integral to the reporting of catches and reconciling those catches with data reported via the CDS. This ...

   Meeting Document : WG-FSA-15/02 : Автор(ы): CCAMLR Secretariat

9. Selectivity of commercial and research trawls in relation to krill

   more large krill (35-58 mm) than catches of the research trawl (30-54 mm). The maximum difference in ... selectivity properties of the trawl used in acoustic surveys have different effects on the accuracy of krill ... the selectivity properties of trawls used in acoustic surveys than are estimates of krill numerical ... Paper Title:  Selectivity of commercial and research trawls in relation to krill Abstract ... large krill (35-58 mm) than catches of the research trawl (30-54 mm). The maximum difference in mean ... difference between mean values of krill length in the research trawl samples, on the other hand, was ... the basis of mean krill length in trawl samples. Krill density estimates (individuals/m2) were ... Length (mm) Length (mm) Parameter Mean length of krill in the sample (mm) Target strength (dB ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 161–169 : Автор(ы): Kasatkina, S.M

10. A method to evaluate selection of Antarctic krill in towed fishing gears

    the morphology of the species in quest and the shapes of the relevant mesh types, to predict the size ... understanding of the catching process of E. superba and the selective properties in different fishing gear ... Abstract:  The pelagic trawlers involved in the fishery for Antarctic krill (Euphausia superba ... ) apply different trawl designs. Very little information exists on the size selectivity of E. superba ...

    Meeting Document : WG-EMM-13/34 : Автор(ы): L.A. Krag, B. Herrmann (Denmark), S. Iversen, A. Engås, S. Nordrum and B.A. Krafft (Norway)

Страницы