Search results
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Evaluation of the results of trawl selectivity experiments by Poland, Spain and USSR in 1978/79, 1981/82 and 1986/87
2.7 30.0 20;30 18-44 3.1 33.7 ..... 00 \0 Table 7.2: Species: Area: MonthlYear: Mesh size ... ~ 28 ~ 27 + z 26 w -l I 25 (f) G: 24 + 23 22 20 22 24 26 28 30 32 34 MEAN FISH LENGTH ... z 2.6 0 f= u 2.5 w -l w 2.4 (f) +. 2.3 2.2 2.1 + 2.0 20 22 24 26 28 30 32 34 MEAN FISH ... 122 30 218.85 124 30 36.38 126 30 97.40 127 30 77.35 128 30 20.30 Champsocephalus gunnari South ... in 1978/79, 1981/82 and 1986/87 Abstract / Description: Trawl selectivity for several species of ... rates and catch composition. Details of these data were analyzed and minimum mesh sizes for several ... species were calculated. It is recommended that introduction of these mesh sizes should be considered for ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 163–196 : Author(s): Slosarczyk, W., E. Balguerias, K. Shust and S. Iglesias
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Response to Everson (2008)
approach. The two methods are however quite different, particularly in the ways in which SD is calculated ... ., 2001 for the CCAMLR- 2000 strata). Stratum biomass is determined from the mean transect density raised ... method’ as Dr Everson suggested, indeed the pre- cision and accuracy of the two approaches may well ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 195–198 : Author(s): Brierley, A.S., B.G. Heywood and S.F. Gull
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Long-term trends in the foraging patterns of female Antarctic fur seals at South Georgia
trips, with 1979 being the year with the fewest trips made during the entire 20 year period. (In press ... with the fewest trips made during the entire 20 year period. (In press in: Sahrhage, D. (ed). Antarctic Ocean ... Bird Island, South Georgia, was analyzed to estimate: 1) birth year of individuals, and 2) the number ... , was analyzed to estimate: 1) birth year of individuals, and 2) the number of feeding trips made ... of feeding trips, with 1979 being the year with the fewest trips made during the entire 20 year period ... voyages ont ete les moins nombreux sur la periode de 20 ans. Sous presse dans Sahrhage, D. (ed ... OKa3anCH rOAoM, KorAa 6bInO cAenaHo HaWMeHbwee KOnWqeCTBO BhlxoAoB 3a BeCb 20-neTHwfI nepwoA ... from Bird Island, South Georgia, was analyzed to estimate: 1) birth year of individuals ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 441-443 : Author(s): Bengtson, J.L.
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Operational interactions of sperm whales and killer whales with the Patagonian toothfish industrial fishery off southern Chile
le s (in di vi du al s) 0 10 20 30 40 50 60 70 80 90 E ffo rt ( ha ul s ob se ... rv ed ) (a) 0 5 10 15 20 25 30 35 40 45 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ... Month K ill er w ha le s (in di vi du al s) 0 10 20 30 40 50 60 70 80 90 E ffo rt ... + 173.06 R2 = 0.8552 0 5 10 15 20 25 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 ... eleginoides) fishery operations were assessed in southern Chile during surveys with observers on board ... industrial fishing vessels between April 2002 and March 2003. For the 180 hauls monitored, the evidence of ... mode and median of the depredation rate was 0, the global impact of cetaceans on the fishing yield is ... depredation decreased to 0%; this could be the result of killer whales preferring to predate on sperm whales ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 127–140 : Author(s): Hucke-Gaete, R., C.A. Moreno and J. Arata
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Fishing for toothfish using pots: results of trials undertaken around South Georgia, March–May 2000
~yqee 3TOTO MeTOAa AnX IIpOMbICJIOB KnbIKaqa B 3 o ~ e A ~ ~ ~ C T B M R OHBeHUPIPI AHTKOM ... . ~ P H npPIMeHeHPIPI 3TOrO MeTOAa 6b1n IIOJlyYeH D. elegii~oiries, onHaKo ~a6nm~ancx H 6onbmofi npHnoB ~pa6oB. Kos ... . H p a ~ e u a ~ e n b ~ o , YTO IICIIOnb30BaHMe JIOBYLLlCK YCTpaHPInO IIPIZAOB IITHQ. Y~0661 M?lKCPIMI.I3IIPOBaTb IIOnb3y OT ... ), which brings together the result of all UK through enclosure in mesh. This still allowed the tagging ... Paper Title: Fishing for toothfish using pots: results of trials undertaken around South Georgia ... commercial viability of this fishing method for toothfish fisheries in the CCAMLR Convention Area. While the ... eliminated bird by-catch. To capitalise on this feature, there is a need to improve the commercial viability ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 93–105 : Author(s): Agnew, D.J., T.M. Daw, G.M. Pilling and M.G. Purves
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Methodology of data collection on net selectivity and accidental mortality of fish passing through the mesh of the codend
IIIBOB, nO~HnHH H ToneHaHTOB. Bcero H3MepReTcR 30 R~e:tl:: 10 B Ha~ane, 10 B cepe~HHe H 10 B KOH ... p~6, npoillegmnx CKB03b ~eID, 3anOnHRIDT oTgenbHo Ha Ka~ goe 3a~eTHoe TpaneHHe. KapTO~Ka ceneKTHBHOCTH TpanOB ... 6 16 26 7 17 27 8 18 28 9 19 29 10 20 30 - 114 - ___ .n, ____ _6~ _ '\_ h -y. a l cl ... orrpe~eneHHIO ceneKTHBHhlX cBoAcTB ceTHoro rronOTHa KYTKa Tpana, C Hcrron h30BaHHeM Crre~HaJI hHoro ... 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 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 99-121 : Author(s): VNIRO (USSR)
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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 : Author(s): Frolkina, Zh.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
, of which D. eleginoides comprised 20.502 tonnes (96%). The seamounts differed substantially in relation ... comprised 20.502 tonnes (96%). The seamounts differed substantially in relation to seabed topography ... comprised 20.502 tonnes (96%). The seamounts differed substantially in relation to seabed topography ... tonnes dont 20,502 tonnes de D. eleginoides (soit 96%). Les hauts-fonds se distinguent par la ... strate ou l'on a realise la plus grande capture (en poids) par unit6 d'effort est celle des 600 B 800 ... T , H 3 Y e r O 20,502 T (96%) n p H r u n o c b Ha D. eleginoides ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 99–116 : Author(s): López Abellán, L.J. and J.F. González Jiménez
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On the instantaneous natural mortality rate of Champsocephalus gunnari, South Georgia (Subarea 48.3)
o~eHeH meCTblO HMeIOIllHMHC5I MeTO,l(aMH. B paC1.IeTaX 6bIJlH HCnOJlb30BaHbI ,l(aHHbIe no pa3MepHoMY ... r. B pe3YJlbTaTe 6bIJI nOJlY1.IeH mHpoKHtf ,l(Hana30H Ol.\eH01.lHblX 3Ha1.leHHtf KoacpCPHl.\HeHTa M. AHaJlH3 ... HCnOJlb30BaTb M=O,56. Resumen Se evalua el coeficiente de mortalidad natural instantanea (M) de ... individual season and for the entire period. Age composition over all seasons was . determined using two ... 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 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 313–326 : Author(s): Frolkina, G.A. and R.S. Dorovskikh
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Factors that may influence the accuracy of abundance estimates from CCAMLR tag-recapture programs for Dissostichus spp. and best practice for addressing bias
programs that are currently active in CCAMLR are identified. CCAMLR Science, Vol. 20 (2013): 63–72 63 ... to the total population in a closed and fully mixed population will be equal to the ratio of tagged animals ... in a sample to the total sample size: M R N C = (1) where M is the total number of tagged animals ... number of tagged animals recaptured in a sample, and C is the total number of animals caught ... spatially explicit modelling approaches is also an important next step for Dissostichus spp. assessments ... -recapture programs for Dissostichus spp. and best practice for addressing bias Abstract / Description: The ... Lincoln-Petersen equation, the simplest form of an abundance estimator using tag-recapture data, was used ... account for their effects in stock assessments for Dissostichus spp. are also summarised. In nearly all ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 63–72 : Author(s): Welsford, D.C. and P.E. Ziegler