Результаты поиска

1. Dynamics of Antarctic krill in the Bransfield Strait during austral summer and autumn investigated using acoustic data from a fishing vessel

   fishing vessels might help provide such insight. In the present work, the dynamics of krill with regards ... integration assuming they constituted the bulk of krill biomass. Our results indicated a major shift in mid ... daytime in May, and also a shift in the length distribution of krill. The results strongly support recent ... operated in areas of very high swarm encounter rates, and that the trawling occurred on the highest krill ...

   Meeting Document : WG-EMM-17/40 : Автор(ы): X. Wang, G. Skaret, O.R. Godø and X. Zhao

2. Preliminary assessment of mackerel icefish, Champsocephalus gunnari, on the Heard Island Plateau (Division 58.5.2) based on a survey in April–May 2003

   approximately 20% of the 2002 estimate. This decline in abundance is consistent with the passage of the strong ... evident in the survey were not fully sampled and as such are not included in the assessment. Estimates of ... in recruitment, natural mortality and growth of these fish, combined with the need to maintain a ... steady yield if possible need to be explored further in the development of a management procedure that ...

   Meeting Document : WG-FSA-03/32 : Автор(ы): A.J. Constable, C.R. Davies, R. Williams and T. Lamb (Australia)

3. Trophic interactions and population trends of killer whales (Orcinus orca) in the southern Ross Sea

   coincident with a decrease in the number and size of an important prey: Antarctic toothfish (Dissostichus ... contrast, the prevalence of the larger, mammal-eating Type-B killer whales has not changed in the southern ... small penguins, such as Adélies (Pygoscelis adeliae), are presented. In the case of both killer whale ... forms, the progressive seasonal breakup of fast ice in large bays bordering the Ross Sea likely provides ...

   Meeting Document : WG-FSA-12/P03 : Автор(ы): D.G. Ainley and G. Ballard

4. Research plan for the 2016/17 exploratory longline fishery of Dissostichus spp. in Subarea 48.6 by South Africa and Japan

   estimate the biomasses of D. mawsoni because the recaptures were concentrated in the southern area. In ... consistent with the observed numbers for D. mawsoni in the southern area of block 48.6_2, and blocks 48.6_3 ... . We estimated predicted numbers of recaptures in the next three years using present catch limit and ... northeastward extension of the current research block 48.6_2 in order to elucidate the stock structure. Details ...

   Meeting Document : WG-SAM-16/07 : Автор(ы): Delegations of Japan and South Africa

5. Summer distribution, abundance and structure of krill populations (Euphausia superba and Euphausia crystallorophias) sampled by plankton net in the western Ross Sea (January–February 2000)

   double oblique tow. Mean relative biomass of Antarctic krill Euphausia superba, in the area north of ... dominance in the High Antarctic Zone (south of 74°), with a mean relative biomass of 3.0 (±26%) g/l000m3 and ... mean density of 16.8 (±10%) individuals per 1000m3. The present data have demonstrated that in the Ross ... analysed. This indicated that the composition of the aggregations in terms of the mean length, sex ratio ...

   Meeting Document : WG-EMM-00/38 : Автор(ы): M. Azzali, A. Sala and G. Brancato (Italy)

6. Entanglement of Antarctic fur seals Arctocephalus gazella in man-made debris at Bird Island, South Georgia during the 1994 winter and 1994/95 pup-rearing season

   juveniles. Of entangled animals the proportion of males affected was 67%, approximately the same as in 1993 ... and 1991, but two-thirds of the value recorded in 1990 and 1992. The proportion of entangled animals ... 1994 winter. In the 1994/95 summer the number of entangled seals (20) was also the lowest yet recorded ... Abstract:  Surveys of Antarctic fur seals entangled in man-made marine debris were carried out for ...

   Meeting Document : SC-CAMLR-XIV/BG/08 : Автор(ы): Delegation of the United Kingdom

7. Notothenia (p.) gibberifrons Stock Status and TAC Estimation in the Area of Shag Rocks (Subarea 48.3)

   -term mean (5947 million specimens), the abundance of N. guntheri in 1987/77 was 152 thousand tons. Then ... ) Fishing intensity in the predicted period is at the level of 1987/88; c) Fishing intensity in the ... ) Title:  Notothenia (p.) gibberifrons Stock Status and TAC Estimation in the Area of Shag Rocks (Subarea ... the mean value of fishing mortality for the main commercially taken age groups (2- 4 years); b ...

   Meeting Document : WG-FSA-88/33 : Автор(ы): R. Borodin and K. Shust (USSR)

8. Discharge of offal in the Ross Sea – follow up to COMM CIRC 15/15–SC CIRC 15/06

   an analysis of the information provided by New Zealand in previous years (COMM CIRC 13/09), along ... facilitate further investigation. In 2013 reports of offal were tightly clustered in a small area on the ... border of SSRUs 88.H and J, whereas in 2015 the reports were received from a broader area. For each ... . Identifying the provenance of offal found in the stomachs of toothfish is inconclusive in many cases, however ...

   Meeting Document : CCAMLR-XXXIV/BG/10 : Автор(ы): CCAMLR Secretariat

9. An updated descriptive analysis of the toothfish (Dissostichus spp.) tagging program in Subareas 88.1 and 88.2 for 2006/07

   Abstract:  Descriptive analyses of the toothfish tagging programme carried out in Subareas 88.1 ... described in this paper for the first time. Overall, a reported total of 12 177 Antarctic toothfish have ... . The number of tags recaptured in the Ross Sea in 2007 by New Zealand vessels was the highest annual ... recapture to date and double the number caught in 2006, although the nature of these recaptures suggests ...

   Meeting Document : WG-SAM-07/5 : Автор(ы): A. Dunn, S.M. Hanchet and S.L. Ballara (New Zealand)

10. LENGTH AND AGE AT SPAWNING OF ANTARCTIC TOOTHFISH DISSOSTICHUS MAWSONI IN THE ROSS SEA

    ) by length. Evidence of skip spawning by females results in a right-shifted ogive, increasing the ... slope with the age distribution in the northern area and the lack of evidence for skip spawning in the ... ogive is biased right (older) by excluding the mature fish in the north depends on the proportion of the ... male Antarctic toothfish Dissostichus mawsoni from fish sampled in the Ross Sea spanning the 2000-2009 ...

    Meeting Document : WG-FSA-09/37 : Автор(ы): S.J. Parker and P.J. Grimes (New Zealand)

Страницы