Search results
-
Choosing distance between acoustic survey tacks
on the basis of typical size of the surveyed region, allowable relative error in the biomass estimate ... that the suggested criterion be applied in real hydroacoustic surveys. File: 08-Kalikhman-et-al.pdf ... on the basis of typical size of the surveyed region, allowable relative error in the biomass ... recommended that the suggested criterion be applied in real hyroacoustic surveys. CHOISIR LA DISTANCE ... as to provide the desired accuracy of the biomass assessment in the area, in the least time and ... with the lowest expenditure. Since the error in biomass assessment depends on the variability of ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 153-164 : Author(s): Kalikhman, I.L., Z.I. Kizner, B.R. Zaripov and W.D. Tesler
-
Toothfish, Dissostichus eleginoides, at South Georgia
Dissostichus eleginoides fishery at South Georgia has expanded greatly in recent years. It has been claimed ... longliner in January 1990 indicates that the fish are sexually mature and, at the time of sampling, are ... Georgia has expanded greatly in recent years. It has been claimed that the exploited fish are senescent ... examination of the gonads of a small sample of fish taken from a commerciallongliner in January 1990 ... that a TAC of 1200 tonnes be set for Dissostichus eleginoides in Subarea 48.3. That estimate was based ... longline fishery was justified (CCAMLR-VIII, paragraph 106). We know of no fishery anywhere in the World ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 255–261 : Author(s): Everson, I. and S. Campbell
-
Results of fish stock assessment survey, South Georgia, December 1987 - January 1988
complements earlier surveys in the same area and showed that most of the stocks are continuing to decline ... in abundance. File: 02-McKennna-and-Saila.pdf ... these stocks was carried out from December 1987 to January 1988. It complements earlier surveys in the ... no signs of recovery and Champsocephalus gunnari is likely to continue declining in abundance ... stocks have been declining since the late 1970's (Kock 1985,1986; Gabriel 1987). In the early 1970's the ... tonnes in a season (Kock 1986). The decline in abundance of this species since that time has been ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 19-52 : Author(s): McKenna, Jr., J.E. and S.B. Saila
-
Growth and natural mortality of Patagonian rockcod (Patagonotothen guntheri shagensis) from Shag Rocks shelf
-weight data of research and fishery survey cruises in the Shag Rocks area from 1978 to 1986. The natural ... of natural mortality M=0.8 was used in calculations and the optimal age and length for harvesting ... calculated by using age and length-weight data of research and fishery survey cruises in the Shag Rocks ... within a range of 0.63 to 1.06. The mean value of natural mortality M=0.8 was used in calculations and ... . INTRODUCTION The Patagonian rockcod was first found on the Shag and Black Rocks shelf in 1974 and was ... its biology and population dynamics in these areas were initiated in 1973 when commercial catches ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 111–121 : Author(s): Shlibanov, V.I.
-
Trawl selectivity for Champsocephalus gunnari
selectivity for mackerel icefish (Champsocephalus gunnari L.), were collected in 1981 in the South Georgia ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 69–75 : Author(s): Efanov, S.F., G.E. Bidenko and V.A. Boronin
-
Refinements to the strategy for managing depleted fish stocks based on CCAMLR objectives
". 1. IN1RODUCTION In 1988 the Working Group for the Development of Approaches to Conservation (WG-DAC) suggested ... states of a depleted stock, and take into account uncertainty in assessments. Sample calculations show ... that applying a policy of F 0.1 will not always lead to stock recovery in two to three decades, and ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 467–475 : Author(s): de la Mare, W.K. and A. Constable
-
Methods of age determination for mackerel icefish (Champsocephalus gunnari Lönnberg 1905) from the South Georgia Island shelf
analyzing data on length frequency distribution of fish in catches simultaneously with otolith radii of fish ... taken in the period July to September. The latter was done using specimens from strictly defined age ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 37–49 : Author(s): Frolkina, Zh.A.
-
Target strengths of krill at 136 and 20 kHz
, Australia: 141-152. SAMOVOLKIN, V.G. 1980 Rasseyanie uItrozvukovykh voIn krevetkami. Okeanologiya, 14 ... . At the same frequency for aggregations with mean lengths in the range 41 to 47 mm the mean single ... -krill target strength is in the range-76 to-81 dB. File: 08-Kasatkina.pdf ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 141–157 : Author(s): Kasatkina, S.M.
-
Genetic variations and population structure of krill from the Prydz Bay region of Antarctic waters
npo6hl 6hInH nonyqeHhl OT ogHOH H TOH ~e pa3MHo~a~eHCH nonynHLtHH KpHnH. Pe3yn hTa ThI 3Toro ... results of this study agree closely with genetic data from other studies on krill in the Atlantic sector ... under the above title in Polar Biology (1986) 6: 233–236. File: 13-MacDonald-et-al.pdf ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 271-273 : Author(s): MacDonald, C.M., R. Williams and M. Adams
-
Estimating krill recruitment and its variability
recruits in a population sampled by a net haul survey. Preliminary results from a series of five net haul ... surveys in the South Atlantic and the Indian Ocean sectors of the Southern Ocean give a mean recruitment ... of krill density-at-length data into the proportion of recruits in a population sampled by a net ... haul survey. Preliminary results from a series of five net haul surveys in the South Atlantic and the ... and Pitcher (1979), should be carried out in order to determine the proportion of recruits in krill ... samples collected in net surveys. This paper describes a method which has been developed along these ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 55–69 : Author(s): de la Mare, W.K