Resultados de la búsqueda

1. An index of per capita recruitment

   largest with high values of R 1; increasing M tends to offset this effect but only slightly. A simple ... the functional relationship between spawners and recruits. PCR is biased low with age-specific decline ... are skewed toward higher values such that the dynamic range of PCR is largest with high values of R1 ... spawners and recruits. PCR is biased low with age-specific decline in mortality and reduction in the ... with one year of mortality removed: In addition to compounding the results of two PCRy_l ... capita recruitment (PCR). Such a measure could be obtained with surveys in successive years provided ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 179–196 : Autor(es): Hewitt, R

2. Selectivity parameters for Notothenia gibberifrons Lönnberg, 1905 and Champsocephalus gunnari Lönnberg, 1905 obtained during “8611 ANTARCTICA [ANTARTIDA]” expedition

   different methods with a codend mesh of 68 mm were 2.87 for Notothenia gibberifrons and 3.10 for ... . Selection factors calculated following different methods with a codend mesh of 68 mm were 2.87 for ... of Antarctic Fish Selectivity by the 32/36 bottom trawl with various codends. 93 Tabla 1 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 87-105 : Autor(es): Balguerías, E.

3. Natural mortality of grey rockcod (Notothenia squamifrons) in various areas of the Indian sector of the Southern Ocean

   were 0.38, 0.36 and 0.33 for the above areas respectively. These values are comparable with those ... respectively. These values are comparable with those derived for most notothenioids. Resume Le taux de ... ). In order to compare our data with the results obtained by Duhamel (Kock, Duhamel, Hureau, 1985), age ... at maturity for most fish was determined for a population with 50% of mature fish. The values of tn ... -0.4634IgTO ( 3 ) ( 4 ) These calculations are presented here purely to compare our results with the ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 141–146 : Autor(es): Zaitsev, A.K.

4. Preliminary results of a bottom trawl survey around Elephant Island in October and December 1987

   differed significantly from that in previous seasons which argues for an exchange with C. gunnari from ... previous seasons which argues for an exchange with C. gunnari from other shelf areas of the Peninsula ... interactions with the environment and their trophic links with plankton and benthos. In the first years (1975 ... out by RV Polarstern using a 140' bottom trawl with a small meshed liner of 20 mm. Sampling depth ... Polarfuchs on 12 December 1987 using a 4 m beam trawl with a mesh size of 10 mm. Fishing depth varied from ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 185-200 : Autor(es): Kock, K.-H.

5. Trawl selectivity for Champsocephalus gunnari

   area. The trawl bags tested were made of net webbing with 3.1 mm twine and 88.2 mm mesh size. Trawling ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 69–75 : Autor(es): Efanov, S.F., G.E. Bidenko and V.A. Boronin

6. 1989/1990 stock status and TAC assessment for Patagonotothen brevicauda guntheri in South Georgia subarea (48.3)

   . Stock has been assessed at 123.1 thousand tonnes with a TAC of 28.3 thousand tonnes for the initial ...

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

7. Acoustic estimates of krill density at South Georgia, 1981 to 1998

   seems to be an integral feature of the South Georgian marine ecosystem (reviewed by Brierley et al ... , the British Antarctic Survey (BAS) has undertaken numerous cruises to investigate the marine ... be conducted in hours of daylight. With the exception of the 1982 value, all biomass estimates ... . Variances associated with means are, however, typically high, with most coefficients of variation (CV ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 47–57 : Autor(es): Brierley, A.S., J.L. Watkins, C. Goss, M.T. Wilkinson and I. Everson

8. Fish stock assessment survey in Subarea 48.3

   decline by comparison with results from the 1989/90 season. Other species do not show a similar dramatic ... have undergone a major decline by comparison with results from the 1989/90 season. Other species do ... species with particular reference to the icefish, Champsocephalus gunnari. Information is presented in ... accordance with the recommendations of the Task Group for Information Reported to WG-FSA (SC-CAMLR, 1990a ... . The survey design was similar to those of previous years (Parkes et al., 1990) with a series of ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 25–67 : Autor(es): Everson, I., G. Parkes, K.-H. Kock, S. Campbell, Z. Cielniaszek and J. Szlakowski

9. From the Editor

   strengths determined from an SDWBA model in conjunction with the Jolly and Hampton analysis approach. This ... new Editor, I look forward to carrying on where Dr Sabourenkov left off and to enabling many more ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 199

10. Editorial

    management of the marine living resources of the Southern Ocean. There is a truly circumpo- lar feel to this ... volume with papers using data from the Pacific, Indian and Atlantic sectors of the CAMLR Convention Area ... fisheries acoustics, statistics and modelling, ecosystem monitoring and management, vulnerable marine ... ecosystems, incidental mortality associated with fishing, fish stock assess- ment and at-sea operations. A ...

    Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 243

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