Search results
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e-sc-xxxii-a05.pdf
... of the densest krill swarms detected. Years of moderate to high overall krill density (>30 g m–2) were ... interspersed with years (1999–2000, 2004, 2009–2010) of low density (<30 g m–2). 2.40 The Working Group ... and abundance ................................................... 163 Multi-year abundance analyses ... (SOW); 28 657 tonnes from Bransfield Strait West (APBSW) and 20 424 tonnes from Drake Passage East ... establish an overall catch limit and spatial distribution of that catch limit for a period of several years ... -catch, as well as an analysis of notifications for the forthcoming season. As in a finfish Fishery ... allow review of the data availability, and as a basis for a review for the continued utility of the ... densest krill swarms detected. Years of moderate to high overall krill density (>30 g m–2) were
application/pdf attached to:WG-EMM-13
Meeting Report : WG-EMM-13
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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
with other informative estimators for stock abundance and productivity, the review and the simulations ... with other informative estimators for stock abundance and productivity, the review and the simulations ... . 0 10 20 30 40 50 0. 0 0. 2 0. 4 0. 6 0. 8 1. 0 Immature selectivity Age (y) Se le ct iv ity ... 0 10 20 30 40 50 0. 0 0. 2 0. 4 0. 6 0. 8 1. 0 Truncated mature selectivity Age (y) 0 10 20 30 ... assumed a single population without movement or migration. It represented age classes from 0 to 50 years ... the age of 4 years and the age of 50% maturity (‘immature selectiv- ity’). This fishing selectivity ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 57–73 : Author(s): Ziegler, P.E., D.C. Welsford and A.J. Constable
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e-sc-xxviii-a10.pdf
... – Mortality of long-lived organisms can result in long recovery periods to regenerate unfished age structure ... of age, slow growth requires longer times to generate maximum size. Vulnerability related to growth ... not occur over a time scale of 20–30 years. Therefore, where estimates of maximum longevity ... for the members of the taxon were available, they were scaled as Low (<10 years), Medium (10–30 years) and High ... not occur over a time scale of 20–30 years. Therefore, where estimates of maximum longevity for the ... been observed 20 or 30 years post impact (Clark et al., in press). 3.10 The Workshop agreed that ... Article II of the CAMLR Convention provided the basis for Conservation Measure 22-06. 2.3 The Workshop ... members of the taxon were available, they were scaled as Low (<10 years), Medium (10–30 years) and High
application/pdf attached to:WS-VME-09
Meeting Report : WS-VME-09
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An index of per capita recruitment
)eM where R1 is the proportion of age-1 animals sampled in year y and M is the post-recruit mortality ... does not vary over age or between years; 2) 100% of age-1 animals spawn; 3) a representative sample ... is constant over all ages and years, and when all age-1 animals spawn. These conclusions are insensitive ... is the proportion of age-1 animals sampled in year y and M is the post-recruit mortality rate. The intent ...
Meeting Document : WG-EMM-99/50 : Author(s): R. Hewitt (USA)
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e-sc-xxx-a04.pdf
... the Working Group to estimate rates of by-catch of fish of all size/age classes (and associated confidence ... that CPUE has increased in recent years in Subareas 48.1 to 48.3. 2.20 WG-EMM-11/44 presented analyses ... The Working Group recalled that CM 51-07 will expire this year and should be reviewed and revised in 2011 ... management approaches ................................. 152 Component 3: Review of spatial and temporal ... second year of the two-year experimental period would be completed in time for WG-EMM to review and ... (50% for all the subsequent years), a five-day reporting interval is required (CCAMLR-XXIX, paragraph ... that an observer is on board the vessel. 2.37 The sampling protocol for fish by-catch was revised in ... their home port. The Working Group agreed that only those data for months where 80% of the observer
application/pdf attached to:WG-EMM-11
Meeting Report : WG-EMM-11
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Scientific Abstracts 1998
Committee and is published only in English. There are four categories of papers: (i) scientific papers ... published elsewhere, for which the full reference and published abstract are given; (ii) scientific papers ... ’ with details of the publisher, if known; (iii) scientific papers not intended for publication, which are listed ... to the Seventeenth Meetings of the CCAMLR Commission and Scientific Committee and is published only in English ... in 1994 and thereafter increased steadily to 1997. Using these data in conjunction with putative size/age ... sampling. Pup growth rates were determined from least square linear regression of weight against age ... conducted each season, differentially counting sex and age categories to assess total population. We ... typically ranges from 20 to 90%. The 10-fold difference in krill bio- mass between 1986 and 1994 was accom ...
Document : Site Section: Publications
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e-sc-xxxiv-a5.pdf
... parameters and age data, when these are available, and requested that model sensitivities be considered ... that included available age and growth data (e.g. as described in WG-SAM-15/11). Further, the Working Group ... following suggestions made at WG-FSA-14. The paper showed that a two-area model with sex- and age-specific ... the best fits to the age and tag data, but that there were still some unexplained patterns ... Methods for assessing stocks in established fisheries .................................... 167 A review ... . Welsford and P. Ziegler (Australia). Methods for assessing stocks in established fisheries A review ... % of initial biomass for a large number of years before recovering. The Working Group requested that ... ) could be applied as an alternative to the method used in WG-SAM-15/23. However, the need for data from
application/pdf attached to:WG-SAM-15
Meeting Report : WG-SAM-15
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International Antarctic marine experts meet in Hobart
under discussion. This year’s CCAMLR meetings will: Review research and monitoring plans in the Ross Sea ... briefing at 10:30am. RSVP by 12:00pm 19 October so that security passes can be ready upon arrival ... under discussion. This year’s CCAMLR meetings will: Review research and monitoring plans ... MEDIA RELEASE 22 October 2018 The Governor of Tasmania, Her Excellency Professor the Honourable ...
Page : Site Section: The Organisation
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To the problem of assessment of probability of finding Antarctic krill concentrations in Division 58.4.2
and Cosmonauts Seas (30–80°E). At this the following main problems were addressed:- Systematization of krill ... Abstract: In 1994 the group of above mentioned authors has completed the first stage ... In 1994 the group of above mentioned authors has completed the first stage of researches ... for creation of an imitation model of krill distribution and search in the Cooperation and Cosmonauts Seas (30 ...
Meeting Document : WG-Krill-94/7 Rev. 1 : Author(s): V.N. Yakovlev, V.A. Bibik and L.M. Kokoz (Ukraine)
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e-sc-xxxiii-a5.pdf
... , to enable improved estimates of year-class strength (YCS) and ageing of samples from the commercial ... above twenty years old. It also recommended sensitivity testing of the age set for the plus group based ... , including ageing otoliths collected from recent surveys and commercial fishing, re-estimation of the growth ... The Working Group recommended that ageing toothfish from the most recent surveys should be a priority ... detailed review of a selected stock assessment could be conducted in the year prior to an assessment year ... . Developments in integrated stock assessment methodologies for krill 2.43 WG-SAM-14/20 described an integrated ... stock assessment model for krill that combines an age-structured cohort model with survey observations ... 58.5.2 2.2 WG-SAM-14/23 Rev. 1 described progress towards an updated assessment for toothfish in
application/pdf attached to:WG-SAM-14
Meeting Report : WG-SAM-14