Search results

1. Potential impacts of bottom trawling on benthic communities in Prydz Bay, Antarctica

   that bottom trawling in the past 20 years has had a considerable effect on the community structure ... B 3aJIHBe TIpIO~3 B 1990/91 r. C06paHHble ~aHHble HCnOJIb- 30BaJIHCb B H3Y'-leHHH nOTeH~HaJIbHOrO B03 ... integridad. 1. INTRODUCTION In the last 10 years, a number of studies have highlighted the impacts ... for a standard haul duration on the bottom of 30 minutes at 3 knots. The sweeps (25 mm diameter combination rope ... 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 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 403–410 : Author(s): Constable, A.J.

2. By-catch of fishes captured by the krill fishing vessel Chiyo Maru No. 2 in Statistical Area 58 (January to March 1995)

   , Armstrong's fish by-catch data were not presented in a standardised manner. This paper presents a brief ... one non-zero observation, the mean of delta-distributed data is estimated as where 11 is the total ... (n+1)(n+3) ...( n+2j-3) . (3) The variance of delta-distributed data with more than one non-zero observation ... is estimated as The variance of the mean of delta-distributed data with more than one non-zero observation ... by-catches of all fish species combined. The data from one haul (Table 1, haul no. 17) were excluded from ...

   Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 111–123 : Author(s): Watters, G

3. 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

   tows per station, over one day). An increase in the total average size of animals caught in periods ... (only one sample of krill per station) is discussed. A gradual decrease in the average size of krill ... of a series of catches made using a standard commercial trawl (9 to 12 tows per station, over one day ... of these observations in relation to krill size composition data obtained from standard surveys (only one sample ... one day). An increase in the total average size of animals caught in periods of light or darkness ... (only one sample of krill per station) is discussed. A gradual decrease in the average size of krill ... of only one sample per station. These samples are collected on different days and at different times ... trawl. From every catch one hundred specimens of E. superba were examined and subjected to biological ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 201–222 : Author(s): Vagin, A.V., R.R. Makarov and L.L. Menshenina

4. Remarks on the natural mortality of Dissostichus eleginoides in Subarea 48.3

   entre les hame~ons courbes NQ14 et les hame~ons droits NQ 22. La valeur moyenne generale de M calculee ... types d'hame~ons dans la sous-zone 48.3. Mortalite naturelle (M) calcu16e pour deux strates de ... ) 6bIJIa BbI1.IHCJIeHa no MeTo~y Cnappe (Sparre, 1989). BbIJIH HCnOJIb30BaHbI napaMeTpbI pOCTa BepTaJIaH ... , captura total y una submuestra de 30 ejemplares por lance, de los cuales se obtuvo la composicion por ... Paper Title:  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 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 21–30 : Author(s): Moreno, C.A. and P.S. Rubilar

5. 1989/1990 stock status and TAC assessment for Patagonotothen brevicauda guntheri in South Georgia subarea (48.3)

   the regression equation between fishing mortality and standardized fishing effort for each age-class. Stock has ... mortality and standardized fishing effort for each age-class. Stock has been assessed at 123.1 thousand ... in South Georgia subarea (48.3) Abstract / Description:  The 1989/90 stock status and TAC assessments ... of 1989/90 fishing season. File:  08-Shilbanov.pdf ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 101–110 : Author(s): Shlibanov, V.I.

6. Joint Polish/American hydroacoustic survey of Elephant Island and the vicinity of King George Island, 1988

   in most areas covered by last year’s survey. The total biomass in the vicinity of Elephant Island ... The hydroacoustic survey found a low krill abundance in most areas covered by last year&rsquo ... selected (6-250 m) was then calculated. One-min estimates then were recorded on magnetic disk files ... 137.31 20.19 60.55 BC3 132.00 1013.00 39.26 89.06 39.77 90.22 03 109.00 742.00 21.74 34.77 16.13 25.80 ... 83.10 Avg. (8S) 35.50 723.50 13.12 30.00 9.65 20.77 ELEPHANT ISLAND (El) C1 9.00 223.00 18.70 ... ~ = 20~ KHZ BIOMASS 1988 TONS/1000. (Bransfield Strait) 200r-----~----~--~----_, 160 80 4111 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 357–377 : Author(s): Macaulay, M.C.

7. Catch-at-age analysis applied to new fisheries: the case of Dissostichus eleginoides

   Paper Title:  Catch-at-age analysis applied to new fisheries: the case of Dissostichus eleginoides ... -at-age data derived from research cruises may provide an alternative to other methods of estimating ... Catch-at-age analysis applied to new fisheries: the case of Dissostichus eleginoides ... model assumptions. This paper demonstrates that for the new fishery, analyses using catch-at-age data ... ); and • fishing mortality is separable by age (Doubleday, 1976). Catch-at-age for all recruited year classes ... survey duration (in years) R = recruitment t r = age at recruitment t m = terminal age L\ = time ... at ages greater than 12. This raises doubts about estimates of M and Z obtained from catch curves ... 4 5 6 7 8 9 Tableau 1: Ta6JIHl.(a 1: Tabla 1: to = - 0.477 years Woo = 97.153 kg Catch Age Catch Age Catch ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 3–9 : Author(s): Zuleta, A.V. and C.A. Moreno

8. Areas of seabed within selected depth ranges in CCAMLR Subarea 48.3, South Georgia

   WG-FSA-90/8 AREAS OF SEABED WITHIN SELECTED DEPTH ... KapTaM 6bIJla onpe,lleJleHa nJlOlIla,llb yqaCTKOB MopCKoro ,llHa no r Jly6HHHbIM ropH30HTaM OT 50 ,llO ... ' - 54°42' 53°36' - 54°58' 53°10' - 54°59' 53°50' - 54°25' 54°00' - 54°15' 54°02' - 54°20' 54°14 ... ' - 54°33' 54°20' - 54°33' 54°05' - 54°23' 54°03' - 54°23' 53°50' - 54°15' Longitude Range ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 459–466 : Author(s): Everson, I. and S. Campbell

9. Cephalopod research in the Antarctic

   span is approximately one year; spawning occurs once and is quickly followed by death. Size ... and the Falkland Islands - and there has been at least one exploratory squid-fishing expedition, south ... of estimating age. Recent advances in validating the daily nature of micro-growth increments in the cephalopod ... statolith (Dawe et al., 1985; Hurley et al., 1985; Lipinski, 1986; Yang et al., 1986) now enable age ... of future commercial exploitation. Research is being carried out at BAS on the species composition ... cephalopods should be fully monitored, research should be concentrated on population biology and trophic ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 323-334 : Author(s): Rodhouse, P.G.

10. Trawl selectivity for Champsocephalus gunnari

    speed was 3.5 knots. Icefish comprised 90 to 100% of catches. The logistic selectivity curves were ... size. Trawling speed was 3.5 knots. Icefish comprised 90 to 100% of catches. The logistic selectivity ...

    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

Pages