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e-sc-xii-a6.pdf
... Methods for Penguins Method A1 - Mean Weight on Arrival Method A2 - Duration of Incubation Shift ... to 15s resulted in 20% of dives of fur seals being unrecognised, a 38% increase in mean maximum dive ... is given in paragraphs 6.42 to 6.47. Standard Methods for Penguins Method A1 - Mean Weight ... . Because the standard deviation of the index was frequently larger than the mean, Members questioned ... . A further discussion of this issue is provided in paragraphs 3.3 and 3.4. ADOPTION OF THE ... in the collection of data using CEMP Standard Methods and in other research in support of CEMP. A ... of its work, similar to the Krill Newsletter currently being circulated to scientists in the SCAR ... relevance to the work of WG-CEMP in undertaking predator monitoring: (i) relevant to Existing Standard
application/pdf attached to:WG-CEMP-93Meeting Report : WG-CEMP-93
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Conservative management of the Antarctic krill fishery
Author(s): Submitted by ASOC Title: Conservative management of the Antarctic krill fishery ... Conservative management of the Antarctic krill fishery ...
Meeting Document : SC-CAMLR-XX/BG/26 : Author(s): Submitted by ASOC
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Estimation of natural mortality using catch-at-age and aged mark-recapture data: a multi-cohort simulation study comparing estimation for a model based on the Baranov equations versus a new mortality equation.
the mean (i.e. the expected value across years) recruitment of age-1 fish, defining the parameter K0 ... AS S , where there are A age-classes considered for the population (i.e. so that Sa has a mean of 1), rather ... of mean age-1 recruitment, K0, is available, com- bined with an estimate of the series of YCS, Γ pfy ... parameters that is close to 1, given by ( ){ }2ˆ10000 1Γ -mean was added to the above –2 log-likelihood ... functional form of selectivity was correctly specified in the BODE model, both models gave close to unbiased ... selectivity function, the bias and imprecision in estimates of M increased by no more than 2% for the CCODE ... number of recaptures-at-age and model the population numbersat- age by annual difference equations ... of 500 000. Simulations which passed catch-at-age numbers to the estimation algorithm after ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 1–27 : Author(s): Candy, S.G.
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On the intensity of sampling krill trawl catches
statistically meaningful differences between samples; and • the problem of how frequently commercial krill ... is necessary to obtain statistically meaningful differences between samples; and • the problem of how ... detected differences in mean length should be in order to provide meaningful insights into the underlying ... size of at least 100 animalsltrawl is necessary to obtain statistically meaningful differences ... and to investigate differences in mean length between stations and between areas. Additional statistical procedures ... described in Zar (1984) were used to estimate projected sample sizes, based on variances in mean length ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 29–48 : Author(s): Miller, D.G.M.
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On the instantaneous natural mortality rate of Champsocephalus gunnari, South Georgia (Subarea 48.3)
) The Beverton-Holt Method (1956): -where t t' = mean age in the catch; M=_I_ t - t l = ftrst age group ... and for the period as a whole is shown in Table 3. Mean length by age group for each season was calculated ... as the mean weighted value of length for each age group (Table 4). The data presented served as a starting ... point for determination of parameters of Bertalanffy's growth curve (Table 5). Values for mean length ... composition of catches from 1964/65 to 1968/69 and the age/length key for the first half of 1972 were used in ... Paper Title: On the instantaneous natural mortality rate of Champsocephalus gunnari, South ... Georgia (Subarea 48.3) Abstract / Description: The instantaneous rate of natural mortality (M) of ... Champsocephalus gunnari in the South Georgia area was assessed using six different methods. Data on size ...
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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Dynamics of Notothenia rossii rossii size-age structure on the Kerguelen Islands shelf
, a stable trend towards increase in the mean age and fish length was noted in catches. In May-June 1991 ... the mean length was 59.2 cm, mean age was 7.4 years; some 70% of catch consisted of repeated spawning fish ... increase in the mean age and fish length was noted in catches. In May-June 1991 the mean length was 59.2 ... cm, mean age was 7.4 years; some 70% of catch consisted of repeated spawning fish. The author ...
Meeting Document : WG-FSA-94/04 : Author(s): P.B. Tankevich (Ukraine)
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Chilean krill fishery: analysis of the 1991 season
, by definition, is the conservation of the Antarctic marine living resources. KriU is by far the most abundant ... :::> 0.. () E ::J E .~ ~ Figure 5: Mean CPUE for the Chilean krill fishery from 1987 to 1991. Data is presented by split-years ... data and its use in studying small-scale spatial distribution of catches. The results show that krill ... Paper Title: Chilean krill fishery: analysis of the 1991 season Abstract / Description: This ... paper summarises Chilean catch data for 1991. Special emphasis is given to the analysis of haul-by-haul ... fishing in Subarea 48.1 is particularly intense near CEMP sites. Other ways of using of haul-by-haul data ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 273–287 : Author(s): Marín, V.H., A. Mujica and P. Eberhard
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An initial examination of using CPUE as a fishery performance index for the krill fishery
be used to produce a fishery-scale performance index. The vessels-specific mean CPUE (log catch (kg) per ... as the difference between this overall mean and the mean for each year in which the vessel fished. An overall ... to produce a fishery-scale performance index. The vessels-specific mean CPUE (log catch (kg) per minute ... between this overall mean and the mean for each year in which the vessel fished. An overall fishery ...
Meeting Document : WG-EMM-16/10 : Author(s): CCAMLR Secretariat
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An assessment of longlining operations for Dissostichus eleginoides on board the Chilean-registered longliner BF Cisne Verde during March–May 1997 around South Georgia (Subarea 48.3)
and sex were taken. Mean total length of females caught was higher than males, and length at first ... %, but was only 24% in the female population. The mean daily loss rate of toothfish observed at the hauling point ... was only 0.8% of the mean daily catch rate; total by-catch by numbers was less than 5%. Consistent CPUE ... into one daily sampling schedule. Data for total length, maturity and sex were taken. Mean total length ...
Meeting Document : WG-FSA-97/41 : Author(s): Ashford, J.R., Everson, I.
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The effects of monitoring procedures on Adélie penguins
lavage and ins t rument at tachment (SC-CAMLR, 1991). Disturbance to individuals and colonies ... individually identified by means of either an electronic t r ansponde r tag (TIRISTM, Texas Instruments ... the second summer in an attempt to improve the streamlining of the package. Ins t ruments were ... a t tached to both male and female pengu ins d u r i n g their long incubation-period foraging trips ... Paper Title: The effects of monitoring procedures on Adélie penguins Abstract / Description: The ... effects of flipper bands, implanted tags, gastric lavage and external instrument attachment on the ... , Antarctica. The return rates of birds carrying bands and/or implanted electronic transponders were compared ... to investigate the contribution of bands to bird mortality and to determine rates of band and tag ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 155–164 : Author(s): Clarke, J. and K. Kerry