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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
, to the west of the South Orkney Islands, 24 March to 18 June 1990- based on data reported by a ... Euphausia superba were carried out on the commercial trawler Grigory Kovtun near the South Orkney Islands ... trawl (9 to 12 tows per station, over one day). An increase in the total average size of animals caught ... in the catch, as well as an increased difference between average length of males and females in the ... stations may be subdivided into two groups. Stations I, IT, IV and VI tended towards an increase in krill ... males is clearly visible for Stations I and 11 and more or less clear correlation can be seen on the ... 1990 - BASED ON DATA REPORTED BY A BIOLOGIST -OBSERVER A.V. Vagin, R.R. Makarov andL.L. Menshenina ... out on the commercial trawler Grigory Kovtun near the South Orkney Islands from March to June 1990 ...
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
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Potential impacts of bottom trawling on benthic communities in Prydz Bay, Antarctica
Paper Title: Potential impacts of bottom trawling on benthic communities in Prydz Bay, Antarctica ... Abstract / Description: This paper presents data on benthos retrieved in bottom trawls during a survey of ... examine a potential impact of bottom trawling on benthic communities in this region. The benthos was ... unfished areas in the South Atlantic and suggested that bottom trawling in the past 20 years has had a ... wide with a headline height of 4 to 5 m. Nets were towed for a standard haul duration on the bottom of ... Bay in February 1991 showed that on most occasions the biomass of benthos in the codend after a 30 ... Messrs R. Williams and P. Heyward for their comments on the manuscript. REFERENCES CLARKE, A. 1979 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 403–410 : Autor(es): Constable, A.J.
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On the instantaneous natural mortality rate of Champsocephalus gunnari, South Georgia (Subarea 48.3)
Paper Title: On the instantaneous natural mortality rate of Champsocephalus gunnari, South ... Champsocephalus gunnari in the South Georgia area was assessed using six different methods. Data on size ... composition of catches from 1964/65 to 1968/69 and the age/length key for the first half of 1972 were used in ... the calculations. The results provided a wide range of estimates for M. The discussion of the results ... this value could be used in the future on an equal footing with M=0.35 (CCAMLR-VIII, paragraph 49 ... . Estimates of these components are made for all size classes using data on the age/length key: ' z ! Pz ... wide range of estimates for M (from 0.16 to 1.13). It is interesting to observe that in two of the ... bottom two rows of Table 6 present the mean estimates of M for each season and for the whole period. The ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 313–326 : Autor(es): Frolkina, G.A. and R.S. Dorovskikh
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Results of a longline survey on seamounts in the southeast Atlantic and in Subarea 48.6 and Division 58.4.4
Paper Title: Results of a longline survey on seamounts in the southeast Atlantic and in Subarea ... vary from 1:1. Females accounted for 70% of individuals of more than 90 cm in total length. The stratum ... between areas. Catch per unit effort ranged from a maximum value of 359 kg/1 000 hooks on Ob and Lena ... Banks to a minimum of 185 kg/1 000 hooks on Meteor Bank. File: 08lopez-abellan.pdf ... P.A. Hulley and an anonymous reviewer for their useful comments on the manuscript and for pointing ... the recommen- dations of the CCAMLR Workshop on Methods for the Assessment of D. eleginoides (SC ... -CAMLR, 1995). The development and consolidation of fisheries for D. eleginoides on existing grounds ... strata surveyed in the two regions (Figure 5). A greater percentage of large individuals was present on ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 99–116 : Autor(es): López Abellán, L.J. and J.F. González Jiménez
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On assessment of Bertalanffy growth equation parameters and instantaneous natural mortality rate of South Georgia mackerel icefish
Paper Title: On assessment of Bertalanffy growth equation parameters and instantaneous natural ... mortality rate of South Georgia mackerel icefish Abstract / Description: An analysis and summary of ... extensive published and unpublished data on size-weight and size-age composition of South Georgia mackerel ... icefish (Champsocephalus gunnari) for 1965 to 1987 is presented. The results enable the calculation of ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 29–36 : Autor(es): Frolkina, Zh.A. and R.S. Dorovskikh
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Methodology of data collection on net selectivity and accidental mortality of fish passing through the mesh of the codend
Paper Title: Methodology of data collection on net selectivity and accidental mortality of fish ... passing through the mesh of the codend Abstract / Description: This paper contains advice on determining ... mesh selectivity factors for trawl codends using a special liner. The design and technical ... specifications of the liner are described. It also describes an experiment to determine the accidental mortality ... (U.S.S.R.) Abstract This paper contains advice on determining mesh selectivity factors for trawl ... codend. It contains proposals on standardising data collection and handling for mesh selectivity ... 3 13 23 4 14 24 5 15 25 6 16 26 7 17 27 8 18 28 9 19 29 10 20 30 - 114 - ___ .n ... ON NET SELECTIVITY AND ACCIDENTAL MORTALITY OF FISH PASSING THROUGH THE MESH OF THE COD END VNIRO ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 99-121 : Autor(es): VNIRO (USSR)
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Remarks on the natural mortality of Dissostichus eleginoides in Subarea 48.3
differences in M between fishing sites. On the other hand, when comparing various mean values of M for the ... Paper Title: Remarks on the natural mortality of Dissostichus eleginoides in Subarea 48.3 ... curve hooks No. 14 and straight hooks No. 22. The general mean value of M calculated for the 44 analysed ... sites. On the other hand, when comparing various mean values of M for the different cases, it was ... comments on the estimation of natural mortality for C. gunnari, N. squamifrons and P. guntheri based on ... hook types in Subarea 48.3. Natural mortality (M) calculated for two fishing depth strata in Subarea ... straight hooks No. 22. The general mean value of M calculated for the 44 analysed situations was 0.14 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 21–30 : Autor(es): Moreno, C.A. and P.S. Rubilar
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A rationale for conservation areas within Antarctic waters
marine living resources’ (Article IX 2 (b)). In order to select meaningful boundaries for such areas ... Paper Title: A rationale for conservation areas within Antarctic waters Abstract / Description ... : The application of potential conservation measures listed in Article IX 2 of the Convention requires ... ‘the designation of regions and sub-regions based on the distribution of populations of Antarctic ... " (Article IX 2 (b)). In order to select meaningful boundaries for such areas, first priority has been ... Antarctic ecosystems proposed by the SCAR Sub-Committee on Conservation (1976). Under the Convention for ... regions might suffice as an initial basis for a workable management regime, under the ecosystem ... ecological basis. AN ECOLOGICAL BASIS FOR DELINEATING CONSERVATION AREAS water circulation and ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 513-535 : Autor(es): Chittleborough, R.G.
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Hydrological conditions and characteristics of icefish (Channichthyidae) distribution on the South Georgia shelf in 1986/87
) distribution on the South Georgia shelf in 1986/87 Abstract / Description: Some characteristics of spatial and ... temporal variability of the distribution of icefish (Channichthyidae) on the South Georgia shelf in ... , commercial fisheries and biological data for 1986/87. File: 01-Shnar-and-Shilbanov.pdf ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 3–14 : Autor(es): Shnar, V.N. and V.I. Shlibanov
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Management and assessment options for the crab fishery around South Georgia
for a conservative approach to management. Such an approach includes the use of catch/effort controls ... Paper Title: Management and assessment options for the crab fishery around South Georgia Abstract ... / Description: A new fishery for the lithodid crab, Paralomis spinosissima, started in Subarea 48.3 in 1992 ... . The fishery is also new to CCAMLR, both in terms of the species and fishing gear. We provide an ... exploitable part of the stock. The target for the Alaskan king crab is between 20 and 60% depending on ... , A.M. Kuris and M.J. Fogarty) for useful comments and suggestions on an earlier draft. The inclusion ... and fishing gear. We provide an overview of the management options for crab fisheries in general and ... Convention point to the need for a conservative approach to management. Such an approach includes the use of ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 193–202 : Autor(es): Basson, M. and D.D. Hoggarth