Search results
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Observer activities on Japanese krill fishing vessels in the CCAMLR Convention Area
CCAMLR Members, the actual catch has not increased, or can be described as decreasing, thus there is no ... . Although the increase of expected catch of krill notified in recent years has caused concerns among some ... urgent management concern related to krill fishery. In addition, CCAMLR XXV agreed “that the priorities ... ) determine the level of by-catch of larval finfish, and (iii) better understand the occurrence of warp-strike ...
Meeting Document : CCAMLR-XXVI/BG/41 Rev. 1 : Author(s): Delegation of Japan
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Preliminary results on by-catch of fish during krill fishery in March to May 1993 on the polish trawler M/T Lepus
-catch of juvenile fish in the krill fishery was small. and off South Orkney Islands there was no such by ... Abstract: From the end of March to the beginning of May. 1993, during fishing operations for ... krill conducted by the m/t Lepus on the fishing grounds off South Orkney Islands: and South Georgia ... , investigations were• carried out to determine biological/fisheries characteristics of the exploited stocks. One ...
Meeting Document : WG-FSA-94/25 : Author(s): Z. Cielniaszek and R. Pactwa (Poland)
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Population structure of the Patagonian toothfish (Dissostichus eleginoides) in Australian waters
heterogeneity at several microsatellite loci among the ten collections, and no overall differentiation among the ... Abstract: MtDNA and microsatellite loci were used to investigate the population structure of ... McDonald Islands (CCAMLR area 58.4.2), four collections) in the Southern Ocean. Additionally, a small ... sample of toothfish from the Shag Rocks/South Georgia fishing location (CCAMLR area 48.3) was also ...
Meeting Document : WG-FSA-01/38 : Author(s): S.A. Appleyard, R.D. Ward and R. Williams (Australia)
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Modifications to the Generalised Yield Model: updated input of recruitment time series data and annual fishing selectivity functions
, endeavouring to predetermine the recruitment series with an average value of M is no longer necessary for ... Abstract: Revisions to the Generalised Yield Model provide for re-estimating the recruitment ... series from survey data for each value of natural mortality used in the assessments, whenever it is ... altered over the range of uncertainty in M factored into the assessment process. Data from outputs from ...
Meeting Document : WG-FSA-01/74 : Author(s): A.J. Constable (Australia)
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Automated data processing using Echoview
manual processing is no longer an option; the large size of the data set is preventing analysis. This ... reappraisal of many of the current methods for data processing and analysis. For some acoustic data sets ... using Echoview, EK60 data and the Echoview R package available in the statistical language R. Whilst ... the scripting of Echoview through EchoviewR has been successful, there are several challenges ...
Meeting Document : SG-ASAM-15/01 : Author(s): M.J. Cox (Australia), G. Skaret (Norway), L.-M.K. Harrison and R. Harcourt (Australia)
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Proposal to allow daytime setting of longlines between 15 and 30 April in the Patagonian toothfish longline fishery in CCAMLR Statistical Division 58.5.2
both of the longline vessels that operate in this fishery and in several seasons, and that no birds ... Abstract: This paper summarises historic effort and seabird bycatch during the pre-season ... extension period (15–30 April) in the Patagonian toothfish longline fishery in CCAMLR statistical division ... 58.5.2. It notes that significant fishing effort has occurred in the pre-season extension period, by ...
Meeting Document : WG-IMAF-11/07 : Author(s): I. Hay (Australia)
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Impacts of ocean acidification on Antarctic krill biology: preliminary results and future research directions
Abstract: This study reports some preliminary results of the impacts of Ocean Acidification due ... to elevated seawater pCO 2 on the activity, mortality, moulting of post-larval krill. Increased CO2 ... . No significant effects on growth rates and intermoult period were observed under experimental ... conditions in this study. Some practical approaches to observing and improving our understandings of the ...
Meeting Document : WG-EMM-12/32 : Author(s): S. Kawaguchi, T. Berli, R. King, S. Nicol, P. Virtue and A. Ishimatsu (Japan)
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Notification for research vessel activity in Divisions 58.4.4a and 58.4.4b
the status of these stocks. No information related to recent stock size exists in this area due to the ... Abstract: The main objective of this research is to collect various biological and physical data ... interest to know the current stock size. Also, tagging activities during this survey will contribute to the ... future investigation on the distribution and population structure of Dissostichus spp.. A notification is ...
Meeting Document : SC-CAMLR-XXVI/09 : Author(s): Delegation of Japan
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Short note: By-catch of fishes caught by the krill fishing vessel Niitaka Maru in the South Georgia area (August 2007)
hauls containing by-catch fish). Owing to the small amount of by-catch, no clear relationships between ... Abstract: Scientific observation on the species composition and abundance of fishes incidentally ... from 6 August to 30 August to the north of South Georgia Is. Among 87 net hauls quantitatively examined ... krill CPUE and fish by-catch could be confirmed in the present study. Author(s): T. Iwami and M ...
Meeting Document : WG-EMM-08/57 : Author(s): T. Iwami and M. Naganobu (Japan)
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Evaluation on the performance of echosounder on a fishing vessel using maximum seabed backscattering
Abstract: The performance of echo sounder system is critical for using acoustic data collected ... evaluate the potential to use seabed backscattering as an alternative way to the standard sphere ... calibration. The largest inter-annual difference of the mean value of the maximum seabed backscattering (S v ... , respectively. However, ANOVA analysis indicated that there was no significant difference among years at both ...
Meeting Document : SG-ASAM-18/06 : Author(s): X. Wang, X. Yu and X. Zhao