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1. A review of the effectiveness of streamer lines as a seabird by-catch mitigation technique in longline fisheries and CCAMLR streamer line requirements

   large degree on the precedent set by CCAMLR in 1991, the streamer line has become the primary, and most ... light of a review of existing literature and available data on the effectiveness of single and paired ... object be deployed windward of the hookline; and recommending that fishers deploy a minimum of two ... streamer lines on a voluntary basis according to performance and material standards. Based on the ... November 2002 (Table 1). Streamer lines had an aerial extent of 30 to 70 m depending on sea state ... line: UW IW-50 Two streamer lines: IW-50+Cannon 10 20 30 40 50 ... 100% compared to a control of no deter- rent over two years in the sablefi sh and Pacifi c cod fi ... collection on single streamer lines was limited and opportunistic in that it took place on two occasions ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 189–201 : Автор(ы): Melvin, E.F., B. Sullivan, G. Robertson and B. Wienecke

2. Estimating unaccounted fishing mortality in the Ross Sea region and Amundsen Sea (CCAMLR Subareas 88.1 and 88.2) bottom longline fisheries targeting Antarctic toothfish

   / Description:  Stock assessments rely on estimates of total mortality resulting from fishing activities ... counted in estimates of total fishing removals or otherwise accounted for in stock assessment models. The ... unaccounted fishing mortality from lost lines in these fisheries is provided. These estimates suggest that on ... average 208 tonnes of Antarctic toothfish mortality may be unaccounted for annually. While the current ... data were then used to estimate hook loss for the entire area on an annual basis and sep- arately for ... integrity for many years. In this sense, marine debris from lost gear may be considered cumulative ... gear was used for this analysis. There is also an ‘other hooks lost’ field, which reports ‘hooks lost ... ’. Catch and effort data were extracted from the CCAMLR C2 database for the 2008–2011 fishing years. The ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 17–30 : Автор(ы): Webber, D.N. and S.J. Parker

3. Fitting Euphausia superba into Southern Ocean food-web models: a review of data sources and their limitations

   of each method of sampling krill, i.e. with nets (for historical time series, demographic information ... the benthos have fundamental implications, both for assessing biomass and for modelling the food web ... southwest (SW) Atlantic sector is a major scale of variability, driven by sea-ice and climate effects on ... . Growth in spring, summer and autumn is now fairly well quantified, but mortality remains an enigma. We ... ) method has been in use for 20 years but there have been various attempts to use other analytical ... first is the underside of sea-ice – an important habitat for krill year-round (Brierley et al., 2002 ... occurred year- round throughout Antarctica, and regularly with an estimated ~20% of the stock deeper than ... strong focus on new developments and the recent literature. Secondly, it provides an overview of the ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 219–245 : Автор(ы): A. Atkinson, S. Nicol, S. Kawaguchi, E. Pakhomov, L. Quetin, R. Ross, S. Hill, C. Reiss, V. Siegel, G. Tarling (submitted to the 2008 Joint CCAMLR-IWC Workshop)

4. CCAMLR ecosystem monitoring and management: future work

   system, (ii) methods for assessing the status of the system, (iii) decision rules on how to adjust ... :  Harvesting of marine living resources in the Southern Ocean is managed by the Commission for the Conservation ... of Antarctic Marine Living Resources (CCAMLR). CCAMLR is widely known for its ecosystem approach to ... use scientific evidence in the decision-making process. Even though this approach was based on the ... Living Resources (CCAMLR) since 1982. Article IX of the Convention on the Conservation of Antarctic ... an ecosystem-based man- agement procedure is the primary task of the CCAMLR Working Group on ... . In conclusion, a work plan for the development of an ecosystem-based management procedure is ... estimates of parameters. For the purposes of developing an ecosystem- based management procedure, plausible ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 233–253 : Автор(ы): Constable, A.J

5. Maximum entropy reconstructions of krill distribution and estimates of krill density from acoustic surveys at South Georgia, 1996–2000

   uses an iterative Bayesian approach to infer the most probable krill density for each of the 32 000 0.5 ... Entropy (MaxEnt) reconstructions of krill distribution and estimates of mean krill density within two ... krill densities for each survey, for which the confidence limits are often narrower than those ... (MaxEnt) have been used successfully for many years in numerous branches of physical science to ... survey area, and provides an estimate of the standard deviation about the mean for each cell. The ... converge on a reconstruction that is most consistent with the observed data and for which the entropy is ... ur ve y bo x. M ap s sh ow in g al on g- tr an se ct k ri ll d en si ti es (l ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 91–100 : Автор(ы): Wafy, M.H., A.S. Brierley, S.F. Gull and J.L. Watkins

6. Fishing intensity of the Soviet fleet in krill fisheries in the southern Atlantic (Subareas 48.2 and 48.3)

   (Subareas 48.2 and 48.3) Abstract / Description:  This paper provides an assessment of the impact of the ... commercial fleet on the krill population in different months during the 1987 to 1990 fishing seasons within ... % of the total catch. The calculations were based on haul-by-haul data from the Soviet fleet, using a ... on the krill population – on biomass and the density of krill aggregated in the fishing grounds – was ... Antarctic ecosystem. Krill are dominant primary consumers and constitute an important food source for ... ; Butterworth et al., 1994; Boyd, 2002a). This topic was investigated for those years when there was the ... greatest recorded fi shing intensity. During the two most recent decades, such years occurred in the 1987 ... AND METHODS The analytical method chosen was based on an application of the probability statistical ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 15–35 : Автор(ы): Kasatkina, S.M. and V.F. Ivanova

7. Statistical problems in krill stock hydroacoustic assessments

   :  Two primary issues are at question for hydroacoustic assessments of krill. The first is the methods ... issue of patchy years vs more even distribution would seem to have more impact on ecosystem management ... -strength measurements. In the case of statistical methods, there are no clear guidelines for deciding what ... needs for improvements in sampling design and tests for systematic trends in survey data collected from ... HYDROACOUSTIC ASSESSMENTS M.C. Macaulay Abstract Two primary issues are at question for hydroacoustic ... biomass present in an area, but rather how it is distributed. The issue of patchy years vs more even ... distributed. Consider as a test case that we have two surveys in two consecutive years giving identical ... its own requirements to have sufficient for its offspring too. Figure 1 shows an example of this with ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 301–309 : Автор(ы): Macaulay, M.C.

8. Age determination of Champsocephalus gunnari Lönnberg, 1905 (Channichthyidae) taken in the South Georgia area in 1990

   USSR conducted two research cruises using the vessels RV Hill Cove and RV Akademik Knipovich to study ... -26 and 30-34 cm. Only vertebra samples (n =140) were used in age determination. Age groups from 1+ to ... 9+ were present in catches. Two peaks in size composition correspond with fish of the 1987 and 1985 ... /86 year classes. The first small peak corresponds with the strong 1988 year class. File:  17 ... assessments and, consequently, setting an optimum catch quota depends on the accuracy of age determination ... conducted two research cruises on the vessels RV Hill Cove and RV Akademik Knipovich to study the status of ... . Yearly growth marks in vertebrae preparations for the age groups observed usually appear as two dark ... otoliths using an electronic scanning microscope. Radtke's tabular and graphic data on daily growth rates ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 285–293 : Автор(ы): Kochkin, P.N.

9. [node:field-journal-volume]:37-51

   In 1999, CCAMLR observers collected macrou- rid otoliths, for subsequent ageing, on two com- mercial ... . holotrachys Species identifi cation and age estimation for M. whitsoni 44 Marriott et al. 0 10 20 30 ... 40 50 60 70 80 90 100 0 5 10 15 20 25 30 35 40 45 50 55 60 Age (years) To ta l l en gt h ... to collect macrourid specimens for identifi cation. The requirements were ‘Two fi sh at random are ...

   Science Journal Paper : 37–51

10. The Patagonian toothfish (Dissostichus eleginoides) fishery in the Kerguelen Islands (Indian Ocean sector of the Southern Ocean)

    eleginoides) have been fished in the Kerguelen Islands zone for 20 years, firstly with trawlers and more ... distribution, timing and area of spawning, and movements between geographical sectors) on the adult section of ... observers on board fishing vessels. File:  01lord-etal.pdf ... the Kerguelen Islands zone for 20 years, firstly with trawlers and more recently with longliners ... entered in a single- table database called ‘Kerpêche’ for trawlers (split- years – 1 July to 30 June ... animals caught at different depths and in different sectors. The results for the two years analysed are ... complete one; all explana- tory variables have an effect on the trend in CPUE. For the factorial variable ...

    Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 1–25 : Автор(ы): Lord, C., G. Duhamel and P. Pruvost

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