Résultats de la recherche

1. Characterisation of the Antarctic polar frontal zone to the north of South Georgia in summer 1994

   possibly of crucial importance to many predator species breeding at the northern end of South Georgia ... to be consistent with the physical observations. A second examination of the region after a period of ... Abstract:  The Polar Front (PF) forms the southern boundary to the Polar Frontal Zone (PFZ) along ... the northern edge of the Antarctic Circumpolar Current (ACC). In a number of areas the position of the ...

   Meeting Document : WG-EMM-97/40 : Auteur(s): Brandon, M.A., Trathan, P.N., Murphy, E.J.

2. Size compositions of males and females in the course of the life cycle of Euphausia superba

   Paper Title:  Size compositions of males and females in the course of the life cycle of Euphausia ... size and sex composition of samples from commercial catches are analyzed over the reproductive season ... , using samples from different years. The observed variations were related to stages of krill maturity ... during the reproductive cycle. Information on size composition by sex is considered to be vital for an ... the active reproduction period - from the beginning of maturation of E. superba in spring to the end ... . Specimens were measured to the nearest 1 mm from the tip of rostrum to the end of telson. An abbreviated ... ). Towards the end of spawning season (females at stage C are dominant) size composition becomes most ... : Size composition of E. superba males and females towards the end of spawning season. (For legend, see ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 3–16 : Auteur(s): Makarov, R.R.

3. The survivorship of rays discarded from the South Georgia longline fishery

   Paper Title:  The survivorship of rays discarded from the South Georgia longline fishery Abstract ... / Description:  Post-haulage survival experiments were conducted on 95 Raja sp. anon. cut off longlines at the ... sea surface by the Chilean fishing vessel Isla Sofía in May and June 2003 during the toothfish fishing ... season in Subarea 48.3. Capture depth had a consistently significant influence on the mortality of skates ... the line being hauled (b = beginning, m = middle, e = end) on skate survival. Endicott and Agnew ... survived to the end of the experiment might not survive long term if they were seriously damaged by ... mouthparts. • The skate is found to be actively swimming around the tank at the end of the twelfth hour of ... were expected to signifi cantly affect the ability of the skate to survive after haulage. Findings ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 155–164 : Auteur(s): Endicott, M. and D.J. Agnew

4. Oceanological factors affecting formation of mackerel icefish aggregations in the South Georgia area during different seasons of the year

   spawning migration beginning is the near-bottom water warming in the spawning ground up to 1.6º?. The ... disperse at the depths more than 250 m within rather narrow temperature range (1.6-1,7ºC). In this period ... the water temperature is a limiting factor restricting fish distribution. In spring-summer icefish are ... feeding at the water temperature from 0.0ºC to 1.9ºC in the South Georgia area and to 2.0ºC near Shag ...

   Meeting Document : WG-FSA-05/76 : Auteur(s): Zh.A. Frolkina (Russia)

5. Reasons of differences between distribution and density of mackerel icefish (Champsocephalus gunnari) aggregations in the South Georgia area during summer and autumn periods in different years from the bottom trawl survey data

   the largest aggregations of food organisms are concentrated at the beginning of the spring period ... beginning of the spawning period is determined in the first place by oceanological factors. Author(s):  Zh.A ... Abstract:  During the feeding period icefish aggregations are confined to a frontal zone between ... . Icefish concentrations were detected at the periphery of a cyclonic meander or in the centre of the ...

   Meeting Document : WG-FSA-05/77 : Auteur(s): Zh.A. Frolkina (Russia)

6. New data on spawning, hatching and growth of Champsocephalus gunnari on the shelf of the Kerguelen Islands

   Paper Title:  New data on spawning, hatching and growth of Champsocephalus gunnari on the shelf of ... the Kerguelen Islands Abstract / Description:  Combined studies on the inner and outer northeastern ... part of the Kerguelen shelf during the 1989/90 to 1993/94 period provide new information on the stock ... the inner shelf has enabled a new cohort of fish to be identified each year. However, annual ... present and the 1988 one can be followed from the beginning (spring 1989/90: 8 to 18 cm) to the end of ... , stage 3 (developing) is common at the end of autumn. Post-spawning fish (stage 5) were recorded in the ... summer sample of January 1992 (37 of the 194 specimens analysed, size range: 25 to 35 cm). At the end ... cm/day with the maximum increment occurring during spring and the minimum after autumn. Specimens ...

   Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 21–34 : Auteur(s): Duhamel, G

7. Abundance, size and maturity of krill (Euphausia superba) in the krill fishing ground of Subarea 48.1 during the 1990/91 austral summer

   Paper Title:  Abundance, size and maturity of krill (Euphausia superba) in the krill fishing ... ground of Subarea 48.1 during the 1990/91 austral summer Abstract / Description:  Acoustic and net ... sampling surveys for krill were conducted in the krill fishing ground north of the South Shetland Islands ... of krill were observed. The survey area was divided into four zones: oceanic, slope frontal, neritic ... the end of the telson. All measurements were carried out by a single observer to avoid ... underestimation but as a true reflection of lower biomass at the end of January in the 1990/91 season. The krin ... only in the last two zones by the end of February, 1991. Post- spawned krill were observed in their ... , and migrate into the neritic and nearshore zones. It is therefore considered that toward the end of ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 183–199 : Auteur(s): Ichii, T., H. Ishii and M. Naganobu

8. The distribution of seabirds on the Alaskan longline fishing grounds: 2002 data report

   Abstract:  Beginning in 2004, improved seabird avoidance measures are required in the Alaska (USA ... ) demersal longline fisheries for groundfish and Pacific halibut based on the results of extensive ... collaborative research. Due to the lack of data on the distribution of seabirds, especially albatrosses and ... . Dietrich, K. Van Wormer and T. Geernaert (USA) Title:  The distribution of seabirds on the Alaskan longline ...

   Meeting Document : WG-FSA-04/46 : Auteur(s): E. Melvin, K. Dietrich, K. Van Wormer and T. Geernaert (USA)

9. Distribution and size of Antarctic krill (Euphausia superba Dana) in Polish commercial catches taken in the Atlantic sector of the Southern Ocean from 1997 to 1999

   commercial catches taken in the Atlantic sector of the Southern Ocean from 1997 to 1999 Abstract ... / Description:  The distribution and internal structure of commercial krill concentrations were investigated in ... the areas of the South Shetland, Elephant, South Georgia and South Orkney Islands in the spring and ... summer from 1997 to 1999. The density of concentrations varied with area and season. The densest ... min (SD: 15.2 and 27.6 respect- ively). Records of the beginning and the end of each trawling were ... which shooting was completed and the net began to fi sh. The end of trawling was the time at which ... since the beginning of commercial exploitation. However, most of these studies have been short term ... used in order to determine the dura- tion of each haul. The beginning of trawling was the time at ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 83–105 : Auteur(s): Jackowski, E

10. Estimates of the tag loss rates for single and double tagged toothfish (Dissostichus mawsoni) fishery in the Ross Sea

    ; declining to 94.6% after six years; and to 88.4% after ten years. Comparison of the different loss rate ... -estimated for double tagged fish in the first four years and under-estimated after that. However, the tag ... that the impact on the assessment of ignoring tag recapture data after a six year period was to ... Abstract:  The rate at which tags are lost from tagged toothfish is an important parameter in ...

    Meeting Document : WG-SAM-11/18 : Auteur(s): A. Dunn, M.H. Smith (New Zealand), D.J. Agnew (UK) and S. Mormede (New Zealand)

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