Search results
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A hybrid approach to acoustic classification and length estimation of krill
strength in situ, an acoustic resolution volume must be based on a single animal measurement. For small ... Sea (1989/90). The new method extracts information on species and size primarily from the acoustic ... used to design and test the method were collected during three surveys in the Ross Sea (1989/90, 1997 ... ≈ . The model has the shape of a two-state low- pass fi lter with the two bends at approximately the input ... individually for each component of a vector, using classical Bayesian techniques. Classification probabilities ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 33–58 : Author(s): Azzali, M., I. Leonori and G. Lanciani
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Proposal for a longline survey on toothfish in Statistical Subarea 48.6 in 2017/18
years the aim is to expand the investigation and involve additional collaborating members. In 2018 a new ... and acoustic techniques. The proposed research is pertinent to issues raised by the Scientific Committee (SC ... information on distribution, relative abundance, and life history of bycatch species. This initial year ... co-ordinated with on-going activities in the same area by Japan and South Africa. In future years ...
Meeting Document : WG-FSA-17/61 Rev. 1 : Author(s): Delegation of Norway
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Estimating the impact of depredation by killer whales and sperm whales on longline fishing for toothfish (Dissostichus eleginoides) around South Georgia
1 and 4 animals, and have a relatively lower impact on catches, depressing CPUE by up to 20%. Sperm whales have ... to 20%. Sperm whales have been more frequently encountered in recent years, occurring in larger pod ... on 3.8% and sperm whales on 17.7% of lines. Killer whales appear in pod sizes normally of 4 to 10 animals ... been more frequently encountered in recent years, occurring in larger pod sizes, whereas killer whale ... (a ) C or re ct ed ca tc h (t on ne s) , 2- st ag e m od el (b ) 20 03 ... 2), and the number of cetaceans observed (Table 1) it is possible to estimate the aver- age consumption per animal ... by calculating number of remains or dam- aged fish as a percentage of the total fish caught in a given fishery ... n fa ct or (s in gl e- st ag e m od el ) C or re ct io n fa ct or (2 -s ta ge ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 163–178 : Author(s): Moir Clark, J. and D.J. Agnew
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SCAF-2019
financial statements for 2018 Executive Secretary CCAMLR-38/04 Review of the 2019 Budget, Draft 2020 Budget ... First Year Implementation Report for the Secretariat’s Strategic Plan (2019–2022) Executive Secretary ... , South Africa, 8 to 10 April 2019) Delegation of South Africa CCAMLR-38/07 Review of the Staff ... Performance Review: progress reporting CCAMLR Secretariat CCAMLR-38/15 CDS Fund expenditure proposal CCAMLR ...
Meeting
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Australia: An integrated stock assessment for the Heard Island and McDonald Islands Patagonian toothfish (Dissostichus eleginoides) fishery in Division 58.5.2
, is preferred over the numbers of fish at age to be able to distinguish between signals in biomass and year ... -at-age by sub-fishery: Estimated from catch-at-length, year-specific age-length keys (ALKs) and ageing ... plot of age observations by year for the survey (red), trawl (Trawl1 and Trawl2, blue), longline ... (LL1 and LL2, grey) and trap (purple). Year Length Age RSTS Commercial Total RSTS Commercial Total ...
Document : Site Section: Meetings
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Results of E.L. Holmberg 1997 fish survey in Subarea 48.3
gunnari at the shelf of the South Georgia Islands. The age and size structure of this species in the whole ... gunnari at the shelf of the South Georgia Islands. The age and size structure of this species in the whole ... was discarded due to net damage. About 80% of the hauls were taken in the shelf of South Georgia Islands (41 ... subarea 48.3, is dominated by younger fish (less than two years). Four years and below: 99.07 ...
Meeting Document : WG-FSA-97/47 : Author(s): Prenski, B., Calcagno, J., Marschoff, E.R., Gonzalez, B.
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Schedule of conservation measures in Force 2015/16
as (s ee p ar ag ra ph s 1 an d 2) B ot to m fi sh er ie s A ll se as on s 22 ... m s in su ba re as , d iv is io ns , s m al l-s ca le re se ar ch u ni ts , o r m an ag em ... is io ns , s m al l-s ca le re se ar ch u ni ts , o r m an ag em en t a re as o pe ... to 30 October 2015) This schedule lists conservation measures adopted by the Commission in accordance ...
Document : Site Section: Publications
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A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997–98 to 2014–15
age in SSRU 88.2H, but the data are very uncertain due to the paucity of otolith readings ... age in SSRU 88.2H, but the data are very uncertain due to the paucity of otolith readings ... across the three SSRUs (73% in 88.1H, 22% in 88.1K and 5% in 88.1I). As in recent years, the remaining ... 150 cm TL). Distributions in the Shelf have become unimodal and less variable in the last three years ...
Meeting Document : WG-FSA-15/36 : Author(s): K. Large, S.M. Hanchet and S. Mormede (New Zealand)
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An impact assessment framework for bottom fishing methods in the CAMLR Convention Area
the ‘likelihood-consequence’ approach, most appropriately addresses the need to man- age risks arising from rare ... of ongoing activities such as fishing (where ‘impact’ refers to actual dam- age and ‘risk’ refers ... °E 160° E 170°E 180° 170°W 160°W 150 80° S 75° S 70° S 65° S 60° S 600-1800 200-600 60-200 20 ... of a the local benthic community over years, and ‘negligible’ at the scale of the entire ecosystem over decades ... 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 ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 195–210 : Author(s): Sharp, B.R., S.J. Parker and N. Smith
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An overview of a large ecosystem survey of the southwest Indian Ocean sector of the Southern Ocean (CCAMLR Division 58.4.2)
Division 58.4.2 (the South West Indian Ocean Sector of the Southern Ocean 30-80°E) in January-March 2006 ... (the South West Indian Ocean Sector of the Southern Ocean 30-80°E) in January-March 2006, which was designed ... was conducted from a single ship, the RSV Aurora Australis, and consisted of 11 meridional transects, between 30 ... ° and 80°E. On each transect a range of underway data were obtained and on six transects detailed sampling ...
Meeting Document : WG-EMM-06/15 : Author(s): S. Nicol, S. Kawaguchi, T. Jarvis, G. Williams, N. Bindoff, D. Thiele (Australia), J. Schwarz (Germany), A. Davidson, S. Wright, J. Gedamke and P. Thompson (Australia)