Résultats de la recherche
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Diurnal variations in biological characteristics of krill, Euphausia superba Dana, to the west of the South Orkney Islands, 24 March to 18 June 1990 - based on data reported by a biologist-observer
average size of males was consistently larger than that of females (Makarov, 1991). It should be stressed ... that 50% level of sex ratio of E. superba for all samples from every station corresponded with ... occupy deep layers, the segregation by size does not occur (Station VI). It may be concluded that ... be several causes of this decrease (see also Vagin, 1991 - Figure 2). It may be connected with post ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 201–222 : Auteur(s): Vagin, A.V., R.R. Makarov and L.L. Menshenina
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Natural mortality rate in the mackerel icefish (Champsocephalus gunnari) around South Georgia
provide an estimate that is unaffected by confounding effects mainly due to recruitment variation, but ... of harvesting, when by definition F will be zero, Z will equate to M so that a good estimate can be ... ), although that paper proposes a value of 0.55) and 0.35 (from SC-CAMLR, 1988) should be used. The ... Mean age 5.8 4.9 4.3 4.1 These results indicate that the mortality rate is probably increasing with ... intervals associated with the mean values, it is impossible to determine whether the results should be ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 245–257 : Auteur(s): Everson, I
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The status of krill (Euphausia superba DANA) resources in CCAMLR Statistical Divisions 58.4.2 and 58.4.3 from 1988 to 1990. Results of acoustic surveys
paper. It was found that the increase in krill biomass observed in the area in 1990 is linked with the ... abundant 1986 and 1987 year-classes and with a diminished rate of emigration of krill of these year-classes ... ). Results of surveys conducted from 1988 to 1990 are discussed in the paper. It was found that the increase ... in krill biomass observed in the area in 1990 is linked with the abundant 1986 and 1987 year-classes ... and with a diminished rate of emigration of krill of these year-classes from the area in 1989/1990 ... bridge device with a working frequency of 136 kHz. A copper ball, 26 mm in diameter, was used to ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 163–173 : Auteur(s): Bibik, V.A. and V.N. Yakovlev
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Beach litter survey Signy Island, South Orkney Islands, 1992/93
their origin noted. At Foca Cove, a total of 23 items were recovered with a combined weight of 4.45 kg ... . Comparison with the 1990/91 and 1991/92 litter surveys showed a dramatic drop in both the weight of debris ... are unclear. It may be due to a reduction in fishing activity around the South Orkney Islands because ... the area has been closed to fin-fishing, or to ships complying with recently agreed regulations ...
Meeting Document : CCAMLR-XII/BG/07 : Auteur(s): Delegation of United Kingdom
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Fatty acids composition of spiny icefish Chaenodraco wilsoni in the Bransfield Strait and its implication to local food availability
Strait is complex, with warm, low-salinity surface waters found in the western and northern BS and colder ... Islands. The local food availability of C. wilsoni may be influenced by those waters. The fatty acids can ... marker fatty acids of C. wilsoni between the Transitional Zonal Water with Bellingshausen Sea influence ... (TBW) and the Transitional Zonal Water with Weddell Sea influence (TWW) in the Bransfield Strait. C ...
Meeting Document : WG-FSA-18/76 : Auteur(s): Q.Y. Yang, G.P. Zhu and K. Reid
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CCAMLR spatial management GIS: potential applications for informing the development of a representative system of MPAs
spatially derived parameters through the database may be useful in the design and implementation of ... specific statistics including proportions of areas with particular characteristics. We present database ... information on the location and status of designated MPAs, which will be a key requirement for the effective ...
Meeting Document : WS-MPA-11/20 : Auteur(s): S.M. Grant, S.L. Hill and P.T. Fretwell (UK)
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Research plan for exploratory fishing for toothfish (Dissostichus spp.) in East Antarctica (Divisions 58.4.1 and 58.4.2) by Australia
conjunction with fish biological measurements, tagging and aging, will be used to develop a stock assessment ... rules remain to be determined for these Divisions. Accordingly, a research plan has been developed under ...
Meeting Document : WG-SAM-15/10 : Auteur(s): Delegation of Australia
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Research plan for exploratory fishing for toothfish (Dissostichus spp.) in 2016/17 in Division 58.4.1 by France
. Robust stock assessment and catch limits according to CCAMLR decision rules remain to be determined for ... this Division. France notifies its wish to collaborate in this research fishery with the other ... of allocation and collaboration between Members should be maintained. Author(s): Delegation of ...
Meeting Document : WG-SAM-16/01 : Auteur(s): Delegation of France
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Distribution, biological characteristics and biomass of mackerel icefish based on the results of the trawling survey carried out at RV Atlantida in February 2000
by Russia at R/V Atlantida in February 2000 in Subarea 48.3 are presented. During that period ... length and 2-3 years old predominated. Fish biomass distributed near the bottom estimated with different ... coefficient. The objective evidences are submitted to prove that a certain part of C.gunnari stock may stay in ... proportion distributing near the bottom at that moment. It is proposed to review the survey method ...
Meeting Document : WG-FSA-00/51 : Auteur(s): Zh.A. Frolkina and P.S. Gasiukov (Russia)
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Updated species profile for Antarctic toothfish (Dissostichus mawsoni)
Antarctic toothfish (Dissostichus mawsoni, Norman), was developed by Hanchet (2006). That document ... overlap with D. eleginoides, stock structure, reproduction, age and growth, food and feeding, predation ... the Ross Sea fishery because that was where most of the work had been carried out. The aim of the ... intended that this report form the basis of a species profile of D. mawsoni as requested at the 2009 CCAMLR ...
Meeting Document : WG-FSA-10/24 : Auteur(s): S.M. Hanchet (New Zealand)