Search results
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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 ... Fishing ground selection in the Antarctic krill fishery: trends in patterns across years, seasons ... (March–May) and 48.3 (June–August). In 25 years of krill operations in Area 48, patterns ... increased from an aver- age of 2.2 tonnes/h (until 1990/91) to 3.7 tonnes/h (from 1991/92 onwards). KOR did ... 4 8. 1 P el ag ic a re a (A P PA ) D ra ke P as sa ge e as t ( A P D P E ) D ra ke ... 4 8. 2 P el ag ic a re a (S O PA ) W es t ( S O W ) N or th ea st (S O N E ) S ou th ea st ... (S O S E ) S ub ar ea 4 8. 3 P el ag ic a re a (S G PA ) E as t ( S G E ) W es ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 117–141 : Author(s): Kawaguchi, S., S. Nicol, K. Taki and M. Naganobu
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Analysis of variability of krill size and fish by-catch in the Japanese krill fishery based on scientific observer data
Bayesian model. The models were composed of multistage cluster units (i.e. year, subarea, vessel, cruise ... estimated by the Markov chain Monte Carlo (MCMC) method hardly show difference among years, subareas ... and vessels. The potent interaction effect between year and subarea suggests large spatio–temporal variability ... units (i.e. year, subarea, vessel, cruise and haul) based on a state–space model, separating ... ), krill populations consist of multiple cohorts, but it is difficult to estimate age structure by using ... by fishing vessels. For by-catch fish, although the vessel cover- age contributes to improve statistical ... , D., G. Watters and C. Reiss. 2011. Model- ling Antarctic krill: scale, movement and age- structure.Document WG ... th (m m ) 60 50 40 30 20 (a) Adult size in Subarea 48.1 Overall trend Year E st im ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 31–47 : Author(s): Okuda, T. and M. Kiyota
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Age estimation and maturity of the ridge-scaled macrourid (Macrourus whitsoni) from the Ross Sea
length-at-maturity (38.8 and 46.4 cm) and mean age-at-maturity (10.6 and 13.6 years) are presented ... (38.8 and 46.4 cm) and mean age-at-maturity (10.6 and 13.6 years) are presented for males and females ... Paper Title: Age estimation and maturity of the ridge-scaled macrourid (Macrourus whitsoni) from ... -sex were fitted separately to a revised length-at-age dataset and compared using the likelihood-ratio ... 0 10 20 30 40 50 60 Age (years) 100 80 60 40 20 0 100 ... 4) suggests that the reader generally assigned higher ages to fish that were between 10 and 30 years old ... 80 60 40 20 0 To ta l l en gt h (c m ) Figure 3: Length-at-age for all Macrourus whitsoni ... 0 10 20 30 40 50 60 First age Figure 4: Bias plots of within- and between ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 291–303 : Author(s): Marriott, P.M., M.J. Manning and P.L. Horn
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Krill Fishery Report 2017
during the 2018/19 and 2019/20 fishing seasons; and 100% coverage in subsequent fishing seasons. 13 ... limit for krill of 5.61 million tonnes per season (1 December to 30 November of the following year ... of the spawning biomass dropping below 20% of its median pre-exploitation level over a 20-year harvesting period ... is 10%. 2. Choose a yield, γ2, so that the median escapement at the end of a 20-year period is 75 ...
Document : Site Section: Publications
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Review of the 2019 Budget, Draft 2020 Budget and Forecast Budget for 2021
Author(s): Executive Secretary Title: Review of the 2019 Budget, Draft 2020 Budget and Forecast ... Review of the 2019 Budget, Draft 2020 Budget and Forecast Budget for 2021 ...
Meeting Document : CCAMLR-38/04 : Author(s): Executive Secretary
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e-cc-xxvii-a5.pdf
... I. OPENING OF THE MEETING ....................................................... 173 II. REVIEW ... REVIEW ........................................................... 188 VIII. ELECTION OF THE SCIC ... electronically via the meeting server. No Members objected to this procedure. II. REVIEW OF COMPLIANCE ... . The Committee also recalled that low tagging rates by some vessels had been identified last year and expressed ... Committee also considered whether an administration fee for processing the notifications should be required ... other proposals to the Commission for further consideration: (i) an amendment to Conservation Measure ... Commission for consideration. System of Inspection 2.57 Australia re-submitted an updated proposal to ... areas. 3.7 The Committee agreed that an important task for both SCIC and the Scientific Committee
application/pdf attached to:SCIC-08
Meeting Report : SCIC-08
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Fishery Report: Dissostichus eleginoides and Dissostichus mawsoni South Sandwich Islands (Subarea 48.4)
. 0 10 20 30 40 50 0. 0 0. 2 0. 4 0. 6 0. 8 1. 0 SSI Selectivity Age S el ec tiv ity TOT ... to 2010, with an initial unexploited equilibrium age structure, and with a Beverton-Holt stock- recruit ... are fishing in Subareas 48.3 and 48.4, a logistic selectivity-at-age was assumed for the Subarea 48.4 ... -at- age in the model. In addition, WG-FSA recommended that the model be developed to include data from ...
Document : Site Section: Publications
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e-cc-xxv-a5.pdf
... Vessel Lists........................................................................ 157 III. REVIEW ... The Committee noted that estimates of IUU catches for the past three years continued to be lower than ... in previous years. The estimated total IUU catch of Dissostichus spp. in the 153 Convention Area ... activities in the Kerguelen and Crozet Islands EEZ was the lowest in the past 10 years (CCAMLR- XXV/BG/21 ... catches for the past three years continued to be lower than in previous years. The estimated total IUU ... , for example, in terms of days per year or per fishing season. It was noted that the vulnerability of ... followed the practice whereby Members whose flag vessels were being considered for inclusion on an IUU ... would like to mention that scientific research is essential for the prediction of possible development
application/pdf attached to:SCIC-06
Meeting Report : SCIC-06
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e-sc-xvi-a4-appD.pdf
... of the indices are close to, but not exceeding, their critical levels in the same year. 2.20 To provide two ... was identified by simulating 1 000 20-year time series of standardised normal deviates, counting the number ... Adjusted time series length 20 years 20 years Year with least extreme VOGON 1982 1987 Mean ... ), W. de la Mare (Australia), A. Murray (UK), D. Ramm (Secretariat) and G. Watters (USA). REVIEW ... : Temporal scales of integration of variables monitored for predators. 2 – 10 years 1 Year 0.5 – 2 Years ... 20 years Year with least extreme VOGON 1982 1987 Mean of transformed index -0.7210 -1.4650 ... authors discussed the properties of a method for detecting anomalous years in CEMP indices, and extended ... for the indices for the years 1990 to 1997 produced the output shown in Attachment D. It was found
application/pdf attached to:WG-EMM-Stats-97
Meeting Report : WG-EMM-Stats-97
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Fishery Report 2013: Exploratory fishery for Dissostichus spp. in Subareas 88.1 and 88.2
D. mawsoni otoliths collected by observers from New Zealand vessels have been selected for ageing each year ... length- frequency distributions for each year to produce annual catch-at-age distributions (WG-FSA- 13/48 ... , and are consequently not available for every year. The numbers of otoliths aged in Subarea 88.2 (mainly from SSRU 882H ... and are missing for those years in which no aged otoliths are available (WG-FSA-13/48). In the past, a single ALK ... Description / Abstract: Fishery Report 2013: Exploratory fishery for Dissostichus spp. in ...
Document : Site Section: Publications