Search results
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Temporal variability in Antarctic marine ecosystems: periodic fluctuations in the phocid seals
series began in 1970. The leopard seals and SOI were in phase in the 1960’s, but thereafter the SOI ... series led the leopard seal series by about one quarter of a cycle. The crabeater series was more ... of 5 yr. The Weddell seals were generally in phase with the SOI since the Weddell series began in 1970 ... . The leopard seals and SOI were in phase in the 1960’s, but thereafter the SOI series led the leopard seal ...
Meeting Document : WG-CEMP-91/13 : Author(s): J.W. Testa, G. Oehlert, D.G. Ainley, J.L. Bengtson, D.B. Siniff, R.M. Laws and D. Rounsevell (USA)
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An investigation of integrated stock assessment methods for the Patagonian toothfish (Dissostichus eleginoides) in Division 58.5.2 using CASAL
-effort (CPUE) series. The base-case scenario was then extended to include estimates of IUU catch and mark ... assessment for Dissostichus eleginoides in Division 58.5.2 seems tractable. The recruitment series derived ... from surveys has similarities with the recruitment series estimated by Welsford et al. (2006 ... generally improves the confidence in the estimates of B0 and the recruitment series. Despite these results ...
Meeting Document : WG-FSA-SAM-06/14 : Author(s): A. Constable, S. Candy and I. Ball (Australia)
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Interannual variability of polynya extent in the Antarctic Ocean
Abstract: There are two general kinds of polynya (an ice-free area within sea ice borders ... Data Center, USA). Time series of polynyas extent per a day were calculated from 1978 to 1998 ... and converted into the yearly mean. The time series of the yearly mean in the whole Antarctic Ocean are trending ... upper after the latter half of the 1980s. The time series around the Antarctic Peninsula are trending ...
Meeting Document : WG-EMM-01/34 : Author(s): M. Naganobu and K. Segawa (Japan)
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Alternative method of the age composition assessment on the basis of surveys length data using mixture distributions
and bootstrap method result in different estimates of mean fish density in the length series. Verification ... and the method by de la Mare for length series, estimated with Aitchison’s method, were carried out. The results ... appeared very similar. The method by MacDonald and Pitcher has been tested on the length series obtained ... result in different estimates of mean fish density in the length series. Verification of the hypothesis ...
Meeting Document : WG-FSA-05/78 : Author(s): P. Gasyukov (Russia)
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Identification of Amblyraja species in the longline fishery in Subarea 48.3 – CCAMLR
this form has been classified as Amblyraja. georgiana. A.sp.anon differs from A. georgiana in form, colour ... for A.georgiana. Comparisons of colour and patternation were found to be consistent within each form ... , but significantly different between forms. Male A.georgiana, were found to have proportionally longer claspers ... We describe a previously unknown Amblyraja, A..sp.anon, from South Georgia. In the past this form ...
Meeting Document : WG-FSA-02/54 : Author(s): M. Endicott (United Kingdom), L.J.V. Compagno (South Africa) and D.J. Agnew (United Kingdom)
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Results of the fifth Ross Sea shelf survey to monitor abundance of sub-adult Antarctic toothfish in the southern Ross Sea, February 2016, and notification for continuation in 2017
Abstract: At its 2011 meeting, the Scientific Committee agreed that a time series of relative ... results of the fifth survey in the time series. The objectives of this survey were: (1) to continue a time ... series of longline surveys to monitor sub-adult (≤ 110 cm TL) toothfish in the south of SSRUs 881 ... in the time series. Age frequency data from the surveys have shown the progression of a cohort from age seven ...
Meeting Document : WG-SAM-16/14 : Author(s): A. Dunn, C. Jones, S. Mormede and S. Parker
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Results of the sixth Ross Sea shelf survey to monitor abundance of sub-adult Antarctic toothfish in the southern Ross Sea, January 2017
Abstract: At its 2011 meeting, the Scientific Committee agreed that a time series of relative ... . In this paper we provide results of the sixth annual survey in the time series. The objectives of this survey ... of toothfish for the core strata showed an increase to the maximum observed in the time series. Scaled length ... biomass during the survey time series is consistent with the decline in abundance of this 2012 cohort ...
Meeting Document : WG-SAM-17/01 : Author(s): K. Large, L. Robinson and S. Parker
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On the use of baited remote underwater video to study Antarctic toothfish distribution under the sea-ice: from data collection to processing
spreadtime series of data to study the Antarctic toothfish, it is limited to areas where commercial fishing ... , from 2015 to 2018 a series of BRUV samplings have been carried out from the fast ice of McMurdo Sound ... the videos recorded information on abundance and size distribution related to a series of predictive ... series of data to study the Antarctic toothfish, it is limited to areas where commercial fishing ...
Meeting Document : WG-EMM-2019/50 : Author(s): D. Di Blasi, S. Canese, E. Carlig, L. Ghigliotti, S.J. Parker and M. Vacchi
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A review and analysis of indices from CEMP data
to examine the temporal patterns in the available time series as well as inter-site and inter-species ... comparisons. A series of questions designed to improve the understanding of the characteristics of different ... to examine the temporal patterns in the available time series as well as inter-site and inter-species ... comparisons. A series of questions designed to improve the understanding of the characteristics of different ...
Meeting Document : WG-EMM-12/62 : Author(s): Secretariat
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Proposal for a CCAMLR-sponsored research survey to monitor abundance of pre-recruit Antarctic toothfish in the southern Ross Sea
locations in different years, making it impossible to develop a consistent time series that would monitor ... that a time series of recruitments from a well designed longline survey could be a useful input into a stock ... the feasibility of developing a time series of longline surveys to monitor pre-recruit (<100 cm TL) toothfish ... years, making it impossible to develop a consistent time series that would monitor trends in recruitment ...
Meeting Document : SC-CAMLR-XXX/07 : Author(s): Delegation of New Zealand