Результаты поиска

1. Investigation of bias in the mark–recapture estimate of toothfish population size at South Georgia

   Paper Title:  Investigation of bias in the mark–recapture estimate of toothfish population size at ... uneven distribution of tag placements and recapture effort, on bias in the Petersen estimator of ... ) and upwards in a low-density box, so that they tended to be retained in high-density boxes. The model ... allows simulation of releases by box over multiple years. The model performed as expected with test ... of toothfish typically move only 20–30 km each year (Marlow et al., 2003). This paper investigates ... years (40, 41, 12, 5 and 2% of 165 fish respectively). Tags recaptured in the year in which they were ... tags and years. The third step is the tag–recapture process in year t. As previously explained, the ... whole of the fishing area in recent years (SC-CAMLR, 2004), but in the early years there was a ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 47–63 : Автор(ы): Agnew, D.J., G.P. Kirkwood, J. Pearce and J. Clark

2. 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 ... Paper Title:  Selectivity of commercial and research trawls in relation to krill Abstract ... mean length in catches made by both trawls was  ∆L = 6.2 mm. Statistically significant variability in ... krill length composition was observed between catches made by the research trawl, while in commercial ... large krill (35-58 mm) than catches of the research trawl (30-54 mm). The maximum difference in mean ... expressed towards Yu. V. Kadilnikov for his assistance in preparing this article. REFERENCES Greene ... COMMERCIAL AND RESEARCH TRAWLS IN RELATION TO KRILL S.M. Kasatkina Atlantic Research Institute of Marine ... length in catches made by both trawls was AL = 6.2 mm. Statistically significant variability in krill ...

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

3. Moulting interval and growth of juvenile Antarctic krill fed different concentrations of the diatom Phaenodactylum tricornutum in the laboratory

   0.047 mm day –1, which is too slow to support the hypothesised 2-year life-span of this animal in the ... concentrations of the diatom Phaenodactylum tricornutum in the laboratory Abstract / Description:  Juvenile ... field. Growth conditions of krill in the Southern Ocean are discussed, with special reference to the ... available food concentration. Note: The full text of this paper will be published under the above title in ... slow to support the hypothesised 2-year life-span of this animal in the field. Growth conditions of ... OF JUVENILE ANTARCTIC KRILL FED DIFFERENT CONCENTRATIONS OF THE DIATOM PHAENODACTYLUM TRICORNUTUM IN ... krill in the Southern Ocean are discussed, with special reference to the available food concentration ... . Note : The full text of this paper will be published under the above title in Polar Biology (1987 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 223-225 : Автор(ы): Ikeda, T. and P.G. Thomas

4. Growth and age/length structure of populations of Notothenia (Lepidonotothen) squamifrons (Nototheniidae) in various areas of the Indian sector of the Southern Ocean

   paper. It was found that during the first years of life the linear growth rate is 3 to 5 cm per year. It ... ) squamifrons (Nototheniidae) in various areas of the Indian sector of the Southern Ocean Abstract / Description ... ) squamifrons), inhabiting areas of the Ob and Lena Banks and the Kerguelen Island Shelf, are presented in this ... decreases by a maximum of 1 cm during the last years of life. Maximum annual weight increments of 100 to 120 ... 20 to 36 cm in length, aged 4 to 12 (T =8 years) and on the Lena Bank - 22 to 32 cm in length, aged ... composition of N. squamifrons in the Ob Bank area. 134 30 r 20 ~ 10 20 to 30 20 10 20 10 ... of N. squamifrons in the Lena Bank area. 135 136 20 to 1969 n • 425 20 1970 ~ 30 ... from 3 to 5 cm per year in the first years of life to 1 cm in the last years, dependent upon the area ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 123–139 : Автор(ы): Zaitsev, A.K.

5. Krill (Euphausia superba) distribution in relation to water movement and phytoplankton distribution off the northern South Shetland Islands

   Paper Title:  Krill (Euphausia superba) distribution in relation to water movement and ... phytoplankton distribution off the northern South Shetland Islands Abstract / Description:  In December/February ... 1990/91 a survey was conducted by RV Kaiyo Maru in the vicinity of the South Shetland Islands and ... concentration of krill and to estimate krill biomass in the area surveyed. Krill biomass estimation was done by ... levels (0, 10, 20, 30, 40, 50, 75, 100, 125, 150 and 200 m). Chl-a concentration was determined by ... shallower. The top level of the integration depth, 10 m, was changed sometimes to 20 m in order to avoid ... . Since krill in this region tended to be most abundant within the depth range of 30 to 40 m (Fisheries ... curtain drogue (4 m x 1 m) deployed at 30 m depth in order to study flow patterns at this depth. 3 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 123–140 : Автор(ы): Ichii, T., H. Ishii and M. Naganobu

6. A stock assessment model of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea Region incorporating multi-year mark-recapture data

   hence a multi-year mark-recapture tagging program was initiated by New Zealand fishing vessels in 2001 ... model was developed for Antarctic toothfish in the Ross Sea region that incorporates multi-year release ... of tagged fish and subsequent multi-year data of recapture of tagged fish in conjunction with fishery ... Paper Title:  A stock assessment model of Antarctic toothfish (Dissostichus mawsoni) in the Ross ... . _______________________________________________________________ 1 The CCAMLR fishing season starts on 1 December and ends on 30 November in the following year ... years. This was based on work by Hanchet et al. (2008), who hypothesised an ontogenetic move- ment of ... in succes- sive years. A relative index of vessel-specific tag detection performance for the Ross ... north fishery selectivity 10 20 30 40 50 Age Age Age ...

   Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 39–62 : Автор(ы): Mormede, S., A. Dunn and S.M. Hanchet

7. Sea-surface temperature and krill catches around South Georgia in December–February 1989–1991 and 1999–2001

   Subarea 48.3, which includes satellite surveys with GOES-E, Meteosat and in situ monitoring, together with ... conducting a krill fishery in the area during the entire year. The reliability of these forecasts could be ... Paper Title:  Sea-surface temperature and krill catches around South Georgia in December–February ... 1989–1991 and 1999–2001 Abstract / Description:  Monitoring of sea-surface temperatures (SSTs) in ... includes satellite surveys with GOES-E, Meteosat and in situ monitoring, together with further analysis ... conducting a krill fi shery in the area during the entire year. The reliability of these forecasts could be ... ) from December to February was observed each year, there was a decrease in mean SST (both on monthly ... . 9 (2002): 165–172 165 SEA-SURFACE TEMPERATURE AND KRILL CATCHES AROUND SOUTH GEORGIA IN DECEMBER ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 165–174 : Автор(ы): Vanyushin, G.P

8. A hypothetical life cycle for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region

   Paper Title:  A hypothetical life cycle for Antarctic toothfish (Dissostichus mawsoni) in the Ross ... Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region are reviewed. Based on the presumed ... of the smallest toothfish taken in the toothfish fishery. The hypothesis presented is that D. mawsoni ... in CCAMLR Subareas 88.1 and 88.2 spawn mainly on the ridges and banks of the Pacific-Antarctic ridge ... 70°S from December to May for all years and all vessels. Month G S I ( % ) 0 5 10 15 20 25 ... rest, and is setting this time delay for the floats deeper in the water column. After two years the ... provided for 19 sub- regions, each 10° in latitude and 20° in longitude. The number of floats per sub ... the floats released at 146 m depth, about 30% were retained in the area of release, about 12% moved ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 35–53 : Автор(ы): Hanchet, S.M., G.J. Rickard, J.M. Fenaughty, A. Dunn and M.J. Williams

9. Age and growth of the Antarctic skate (Amblyraja georgiana) in the Ross Sea

   ]), where L t is the pelvic length (PL) in centimetres at age t years. Applying this growth curve to the ... Paper Title:  Age and growth of the Antarctic skate (Amblyraja georgiana) in the Ross Sea Abstract ... been validated. The maximum estimated age was 14 years, but this should be regarded as a conservative ... estimate of longevity because of the possibility that thorn growth ceases in large individuals. There was ... pelvic length (PL) in centimetres at age t years. Applying this growth curve to the estimated lengths at ... rst band. Most skates in our sample had estimated ages of 2–9 years. The maximum age estimates were ... ). The maximum estimated age of 14 years found in this study should be regarded as a conservative ... size in just 2–3 years. Previous literature on the growth of Antarctic and sub-Antarctic species ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 183–194 : Автор(ы): Francis, M.P. and C. Ó Maolagáin

10. Information on the status of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps in the lower South Shetland Islands, derived from the 2000–2006 monitoring program at Potter Cove

    sampling period of 24 years which began in 1983, and at Harmony Cove in the summers of 2001to 2003. The ... Notothenia coriiceps in the lower South Shetland Islands, derived from the 2000–2006 monitoring program at ... decline in trammel net catches of fjord Notothenia rossii and Gobionotothen gibberifrons in relation to ... increasing trend of N. rossii catches from 1991 to 2006, the actual levels are half of those found in the ... of 24 years which began in 1983, and at Harmony Cove in the summers of 2001 to 2003. The decline in ... continuous sampling period of 24 years which began in 1983, and from 2001 to 2003 at Harmony Cove (HC). By ... declined from values of over 20% in 1985 to values of less than 5% in 1988. Since then, G. gibberifrons ... abundance of N. rossii in the split-years 1995/96, Table 1: Results of the ANOVAs performed on total and ...

    Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 83–87 : Автор(ы): Barrera-Oro, E.R. and E.R. Marschoff

Страницы