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Krill biomass assessment in Statistical Area 48 from the RV AtlantNIRO data - Autumn 1989/90
1989/90 Abstract / Description: A krill biomass census survey was carried out at two fishing grounds ... WG-KRILL-90/21 KRILL BIOMASS ASSESSMENT IN STATISTICAL ... AREA 48 FROM THE RV ATLANTNIRO DATA - AUTUMN 1989/90 A.C. Fedotov* * Abstract A krill biomass ... other inadequately studied areas of its distribution. In this connection, an attempt was made to ... 600 S; 32° to 18°W) and southern (60° to 67°S; 20° to 18°W), was affected by different types of ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 115–121 : Autor(es): Fedotov, A.C.
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Demographic characteristics of the Adélie penguin population on Béchervaise Island after 12 years of study
after 12 years of study Abstract / Description: Demographic parameters (age-specific survival rates ... , fecundity levels and population numbers) were analysed for the Béchervaise Island Adélie penguin colony in ... eastern Antarctica after 12 years of monitoring under the CCAMLR Ecosystem Monitoring Program (CEMP). A ... . The population model predicted an annual population growth rate of 0.3% compared to the 1.2–1.8 ... . An expected value for mean penguin breeding success over 20 years was also calculated. This value ... 1991 and 1998 to maximise probabilities of detection (>90% of penguins that survive to 6 years of age ... were at least 4 years of age when tagged. However, age-specifi c fecundity for younger birds was ... season are shown in Table 2d for pooled known-age penguins of 3 to 9 years of age. Again the mean ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 53–74 : Autor(es): Clarke, J., L.M. Emmerson, A. Townsend and K.R. Kerry
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Catch per unit effort (CPUE) data from the early years of commercail krill fishing operations in the Atlantic sector of the Antarctic
does not occur over time for the entire area. High average CPUE were observed in the years 1975/76 and ... Paper Title: Catch per unit effort (CPUE) data from the early years of commercail krill fishing ... are presented from krill fishing operations in CCAMLR Subareas 48.1, 48.2, 48.3 (South Atlantic) for ... the period 1975/76 to 1987/88. Comparisons are carried out between subareas in single years, between ... and for different years (a to g). (e) Season 1984185 12 10 15 20 25 30 35 40 45 50 55 60 65 ... hours for the split-year (1 July to 30 June); (iii) mean monthly catch/hour for the split-year ... published results, however, that this year was one of the poorest krill years around South Georgia (Bonner ... Comparison between Subareas in Single Years Average values of the CPUE indices for Subareas 48.1 to 48.3 ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 31–50 : Autor(es): Siegel, V., V. Sushin and U. Damm
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Fishing ground selection in the Antarctic krill fishery: trends in patterns across years, seasons and nations
years, seasons and nations Abstract / Description: Patterns of fishing ground selection were ... remained relatively constant in Subareas 48.2 (March–May) and 48.3 (June–August). In 25 years of krill ... of high krill density observed by scientific surveys, and possible reasons for this mismatch are ... further discussed. A revised format for data submission is suggested in order to accommodate possible ... seasons and calendar years: CCAMLR fishing seasons start on 1 December and end on 30 November. For ... Science, 3: 13–30. Hewitt, R.P., D.A. Demer and J.H. Emery. 2003. An eight-year cycle in krill biomass ... period. All data points were assigned to SSMUs (Figure 1). For the 10 n mile x 10 n mile or 30 n mile x ... years. results Overview of total catch by area and subarea Figure 2 shows the total catch for each ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 117–141 : Autor(es): Kawaguchi, S., S. Nicol, K. Taki and M. Naganobu
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Towards an initial operational management procedure for the krill fishery in Subareas 48.1, 48.2 and 48.3
for the simulation testing of procedures, and an operational definition of CCAMLR Article II to ... Paper Title: Towards an initial operational management procedure for the krill fishery in ... Subareas 48.1, 48.2 and 48.3 Abstract / Description: An operational management procedure for krill ... , and an algorithm for specifying the levels of regulatory mechanisms (e.g., a catch control law) that ... unexploited prob. quota for first catch 20 years biomass biomass reduction made five years increase Cc Cr ... . Annual TACs are restricted to an initial ceiling (Cc) for a five year period, with a reference CPUE ... an impact on the assessment data generated by the model for the next year of the simulation. In this ... ) Average annual catch over 20 years: Cav (objective n.). (ii) Catch in twentieth year: C20• 197 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 189–219 : Autor(es): Butterworth, D.S.
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An alternative method for estimating the level of illegal fishing using simulated scaling methods on detected effort
Paper Title: An alternative method for estimating the level of illegal fishing using simulated ... scaling methods on detected effort Abstract / Description: A new method for estimating illegal fishing ... the number of detections for a given level of illegal fishing, the more often the illegal fishers will ... estimated amount of fishing for a given number of illegal cruises. As the number of illegal cruises ... ): 143–161 143 AN ALTERNATIVE METHOD FOR ESTIMATING THE LEVEL OF ILLEGAL FISHING USING SIMULATED ... precautionary assessment with some given level of confi dence (for example 80%). Résumé Le présent document ... , which occurs for a given set of observations for an area can be given by: est i i F P D= ∑ (2 ... the expected amount of fi shing or an appropriate multiplier P given the number of detections. For ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 143–161 : Autor(es): Ball, I
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Precautionary measures for a new fishery on Martialia hyadesi (Cephalopoda, Ommastrephidae) in the Scotia Sea: an ecological approach
established. Data from the CCAMLR Convention Area suggest that M. hyadesi may live for two years, but this may ... Paper Title: Precautionary measures for a new fishery on Martialia hyadesi (Cephalopoda ... , Ommastrephidae) in the Scotia Sea: an ecological approach Abstract / Description: In anticipation of the ... development of a new fishery for the ommastrephid squid Martialia hyadesi in the Scotia Sea, this paper ... MEASURES FOR A NEW FISHERY ON MARTIALIA HYADESI (CEPHALOPODA, OMMASTREPHIDAE) IN THE SCOTIA SEA: AN ... Convention Area suggest that M. hyadesi may live for two years, but this may vary. In coinmon with other ... down the encounter rate in their surveys by 20" intervals of longitude. The estimate for consumption ... M. hyadesi: an Ecological Approach proportion of the total encounters made between 20 and 70°W ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 125–139 : Autor(es): Rodhouse, P.G
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An impact assessment framework for bottom fishing methods in the CAMLR Convention Area
Paper Title: An impact assessment framework for bottom fishing methods in the CAMLR Convention ... preliminary assessment of bottom fishing impacts for the 2008/09 toothfish longline fishery. This paper ... illustrates the utility of the standardised approach and provides a methodological template for systematic ... for new and explora- tory fisheries in 2008/09 (see New Zealand, 2008). What follows is an outline ... °W 150 80° S 75° S 70° S 65° S 60° S 600-1800 200-600 60-200 20-60 7-20 2-7 NZ fishing effort ... 60° S 65° S 70° S 75° S 80° S 203 Impact assessment framework for bottom fishing methods 6.3 ... less than 10 years old; expected recovery times for most vulnerable taxa will be substantially longer ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 195–210 : Autor(es): Sharp, B.R., S.J. Parker and N. Smith
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An assessment of the exploratory fishery for Dissostichus spp. on BANZARE Bank (CCAMLR Division 58.4.3b) based on fine-scale catch and effort data
Paper Title: An assessment of the exploratory fishery for Dissostichus spp. on BANZARE Bank ... fine-scale catch and effort data held by CCAMLR for BANZARE Bank, as well as descriptive analyses of ... depletion analysis of stratified catch and effort data indicate that there is strong evidence for depletion ... species in catches in one ground for the first time. Incomplete reporting of biological information for by ... activity. Maximum line lengths for the 2004/05 to 2006/07 seasons were between 30 and 40 km, giving an ... – Division 58.4.3a) and an estab- lished fishery for D. eleginoides around Heard and McDonald Islands ... . mawsoni. As an explora- tory fishery, the catch limit for the division has been nominally set at 300 ... of fish- ing grounds and low level of data coverage avail- able for an exploratory fishery of this ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 55–78 : Autor(es): McKinlay, J.P., D.C. Welsford, A.J. Constable and G.B. Nowara
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Some principles for fisheries regulation from an ecosystem perspective
Paper Title: Some principles for fisheries regulation from an ecosystem perspective Abstract ... regulation of fisheries from an ecosystem perspective, under the Convention for the Conservation of Antarctic ... Marine Living Resources. An important task in this formulation is to derive subsidiary objectives for ... out in the Convention. An important property required for subsidiary objectives is that they are ... principles to be considered in the formulation of a framework for the. regulation of fisheries from an ... ecosystem perspective, under the Convention for the Conservation of Antarctic Marine Living Resources. An ... . An important property required for subsidiary objectives is that they are framed in terms of ... FISHERIES REGULATION FROM AN ECOSYSTEM PERSPECTIVE The main instrument for the regulation of fisheries ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 323-339 : Autor(es): de la Mare, W.K.