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1. Can toothfish catches be used to predict the presence of vulnerable benthic invertebrate taxa?

   fishing footprint. If high target species catch rates are associated with habitats where VMEs are found ... locations. This study used the catch of the six most common vulnerable invertebrate taxa reported by ... observers on New Zealand vessels during the 2009/10 Ross Sea longline fisheries to correlate toothfish catch ... rates and benthic invertebrate catch rates at the scale of a longline segment, ~1 200 m. Analysis of the ... communities relative to the fishing footprint. If high target species catch rates are associated with ... with respect to fishing locations. This study used the catch of the six most common vulnerable ... to correlate toothfish catch rates and benthic invertebrate catch rates at the scale of a longline ... indicator taxa was informative in predicting Antarctic toothfish (Dissostichus mawsoni) catch at the scale ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 87–96 : Автор(ы): Parker, S.J. and M.H. Smith

2. Sensitivity investigation of the SDWBA Antarctic krill target strength model to fatness, material contrast and orientation

   . (1998) starved animals, was considered as the lower limit and the latter, i.e. the default value for ... the SDWBApackage20050603, to represent the upper limit for krill. In addition, the model was ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 97–122 : Автор(ы): Calise, L. and G. Skaret

3. An assessment of toothfish in Subarea 48.3 using CASAL

   catch level, which makes it a potential tool for determining the long-term catch limit, based on the ... stock, the available data include catch length-frequencies, standardised CPUE data, mark–recapture ... time for MCMC runs. Input data Official CCAMLR catch data were used to calculate catches in tonnes ... from 1985 to 20051 (Table 1). Catch proportions at length were calcu- lated from length-frequency ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 65–95 : Автор(ы): Hillary, R.M., G.P. Kirkwood and D.J. Agnew

4. Estimation of krill (Euphausia superba) mortality and production rate in the Antarctic Peninsula region

   reached only a factor of 1:1.6. Krill mortality was calculated by linearized catch curve analysis and ... calculated by linearized catch curve analysis and resulted a rate of Z = 0.88 (1989/90) and Z = 0.96 (1987 ... time. Working with these 'pseudo-cohort' data we can apply the linearized catch curve equation with ... constant time intervals (Sparre et al., 1989) In C(tl,t2) = g - Zt Figure 4 shows the linearized catch ... regression analysis based on age composition data from various years (linearized catch curve method ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 159–176 : Автор(ы): Siegel, V.

5. CPUE indices used in Soviet krill fishery statistics from 1977 to 1992 and their possible utility for evaluation of relative changes in krill biomass

   possible utility for evaluation of relative changes in krill biomass Abstract / Description:  Key catch-per ... and primary data for their calculations, were examined. The main CPUE indices were catch per vessel ... -days fished (CVDF), catch per extended vessel-days fished (CEVDF) and catch per hour of trawling (CHT ... per day was higher. The correlation between catch and tow time was considered to be an indicator of ... @atlant.baltnet.ru Abstract Key catch-per-unit-effort (CPUE) indices used in Soviet krill fi shery statistics, as ... CPUE indices were catch per vessel-days fi shed (CVDF), catch per extended vessel-days fi shed (CEVDF ... ) and catch per hour of trawling (CHT). A relatively high correlation between mean monthly values of ... catch and tow time was considered to be an indicator of homogeneity in krill distribution. The utility ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 165–177 : Автор(ы): Litvinov, F.F., A.Z. Sundakov and V.I. Arkhipov

6. Supplementary data on exploited stocks in Division 58.5.1 (Kerguelen)

   Notothenia rossii, a species which is at present only fishable as a by-catch. The total biomass of the stock ... reached legal catch size. The value of the selected abundance index (catch per unit effort expressed in ... reduction in catch and fishing effort. This trend could well be reversed by too high a catch in 1988/89 ... fishable as a by-catch. The total biomass of the stock, however, remains very low according to the ... good results in 1988/89, once the cohort had reached legal catch size. The value of the selected ... abundance index (catch per unit effort expressed in tonnes per fishing hour) is, however, lower than those ... in the abundance index, following a reduction in catch and fishing effort. This trend could well be ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 147–161 : Автор(ы): Duhamel, G.

7. Use of the Leslie stock depletion model for the assessment of local abundance of Patagonian toothfish (Dissostichus eleginoides)

   used to examine local patterns in catch per unit effort (CPUE) in the longline fisheries for Patagonian ... modelled using a linear regression of catch per hook against cumulative catch, when single vessels operate ... catchability and insufficiently high catch to cause local depletion. Suggestions are made for further work ... , Chile Abstract The Leslie depletion model has been used to examine local patterns in catch per unit ... analyses to examine whether declines in CPUE can be modelled using a linear regression of catch per hook ... against cumulative catch, when single vessels operate in localised areas for periods of at least three ... catch to cause local depletion. Suggestions are made for further woyk. Resume Le modele ...

   Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 55–77 : Автор(ы): Parkes, G., C.A. Moreno, G. Pilling and Z. Young

8. Analysis of trends in Japanese krill fishery CPUE data, and its possible use as a krill abundance index

   krill abundance index Abstract / Description:  Haul-by-haul logbook catch and effort data from the ... definitions of effort and catch-per-unit-effort (CPUE), variables were modelled using linear mixed models in ... between ‘catch per searching time’ and ‘catch per day’ within their lower ranges, suggesting these may ... -ku Shizuoka, 424-8633 Japan Abstract Haul-by-haul logbook catch and effort data from the Japanese ... of effort and catch-per-unit-effort (CPUE), variables were modelled using linear mixed models in ... observed between ‘catch per searching time’ and ‘catch per day’ within their lower ranges, suggesting ... could be used to give a catch-per-unit-effort (CPUE) index that is a good predictor of krill abundance ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 1–28 : Автор(ы): Kawaguchi, S., S. Candy, S. Nicol, K. Taki and M. Naganobu

9. Length-based assessments revisited – why stock status and fishing mortality of long-lived species such as toothfish cannot be inferred from length-frequency data alone

   about using unstandardised catch rate data have led to a desire to draw inferences about stock status ... - cautionary catch limits. The intent of the data col- lection is to provide sufficient data from research and ... the precautionary catch limits. For new and exploratory fisheries of Patagonian toothfish ... referenced catch and effort data, catch length-frequency data, tag-recapture data, and otoliths or scales ... , 2010, paragraph 5.7). However, robust advice on catch limits according to CCAMLR decision rules has ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 57–73 : Автор(ы): Ziegler, P.E., D.C. Welsford and A.J. Constable

10. A proposed management procedure for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity

    , whereas catch-at-length information indicates that past catches have had relatively little impact on ... results of the trials. Given the importance of an adequate catch rate for the economic viability of the ... a catch rate increase, whatever the current resource status. MP performance is reasonably robust ... -recruitment curve steepness h is low. These tests also indicate that monitoring of future catch-at-length ... Islands region is unclear because CPUE data suggest considerable depletion, whereas catch-at-length ... the trials. Given the importance of an adequate catch rate for the economic viability of the fishery ... catch rate increase, whatever the current resource status. MP performance is reasonably robust across a ... curve steepness h is low. These tests also indicate that monitoring of future catch-at-length ...

    Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 33–69 : Автор(ы): Brandão, A. and D.S. Butterworth

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