Resultados de la búsqueda
-
Patagonian toothfish maturity in fishing area 48.3 (South Georgia and Shag Rocks)
maturity ogive was drawn and compared with size composition in catches of recent years to show that ... that male Patagonian toothfish attained maturity being of a smaller size than female individuals. Half ...
Meeting Document : WG-FSA-03/99 : Autor(es): K.V. Shust and A.N. Kozlov (Russia)
-
Professional development in the CCAMLR Secretariat
Abstract: The CCAMLR Secretariat has been tasked with developing a program for CCAMLR along the ... task and provides information to be considered on the future of such a program in the CCAMLR ...
Meeting Document : CCAMLR-XXVI/09 : Autor(es): Secretariat
-
Selectivity-induced bias in growth parameter estimates
being included in catch samples. Fish were included in catch samples from the population with ... Subarea 48.3. Substantial selectivity-induced bias was demonstrated, with the simulated catch sample data ... (2004, WG-FSA- 04/86). This suggests that the growth parameters used in the current toothfish ... assessments in Subarea 48.3 are not incompatible with the Belchier (2004, WG-FSA-04/86) data. Author(s): G.P ...
Meeting Document : WG-FSA-SAM-05/19 : Autor(es): G.P. Kirkwood (United Kingdom)
-
Comparing two and three frequency dB window identification techniques for estimating Antarctic krill density
that only the 120-70 kHz (S v120-70) identification window was comparable with the regularly used 120 ... model. A Bland-Altman analysis with a pre-set nominal cut-off of ≤5 gm-2 bias between methods identified ... ) identification window was comparable with the regularly used 120-38 and 200-120 kHz (S v120-38 & S v200-120 ...
Meeting Document : SG-ASAM-18/01 : Autor(es): S. Fielding
-
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 : Autor(es): Vagin, A.V., R.R. Makarov and L.L. Menshenina
-
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 : Autor(es): Everson, I
-
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 : Autor(es): Bibik, V.A. and V.N. Yakovlev
-
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 : Autor(es): Delegation of United Kingdom
-
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 : Autor(es): Q.Y. Yang, G.P. Zhu and K. Reid
-
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 : Autor(es): S.M. Grant, S.L. Hill and P.T. Fretwell (UK)