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  1. Chlorophyll distributions around the South Shetland Islands

    patterns around the South Shetland Islands in the Antarctic survey of R/V the Kaiyo Maru from 13 December ... 1990 to 11 January 1991 (Leg I) and from 16 January to 11 February 1991 (Leg II). In the north of ... Livingston Island, high chlorophyll a concentration and low POC/chlorophyll a ratio in Leg II and low ... chlorophyll a concentration in Leg I suggest that phytoplankton bloom occurred in this area for about one ...

    Meeting Document : WG-KRILL-93/23 : Author(s): H. Ishii, T. Ichii and M. Naganobu (Japan)

  2. Age/length key for Champsocephalus gunnari from South Georgia; Hill Cove survey, January 1990

    Abstract:  Discrepancy was noted between the age length key and modes in the length distribution ... of Ch. gunnari from the Hill Cove survey around South Georgia in January 1990. A revised age length ... key for this survey is proposed, based on data from a previous survey in the area. The revised age ... length key corresponds well to modes in the length distribution from the survey and to another key ...

    Meeting Document : WG-FSA-91/18 : Author(s): G. Parkes (United Kingdom)

  3. Analysis and modelling of the Soviet Southern Ocean krill fleet, II: Estimating the number of concentrations and analytical justification for search data

    Abstract:  In this paper, I show how data that are routinely collected by survey vessels can be ... used to estimate the number of Concentrations of krill (in the sense of Butterworth (1988), Mangel ... (1988)) in a given region of the southern ocean. Sample computations are performed, using data collected ... by Soviet research/survey vessels in the early 1980s. These examples highlight the need for a ...

    Meeting Document : WS-KCPUE-89/06 : Author(s): M. Mangel (South Africa)

  4. Potential for using CCAMLR VMS data for compliance analysis and data quality assurance

    Abstract:  In response to a request from the Scientific Committee the Secretariat has initiated a ... process to utilise VMS data for data-quality assurance in relation to catch data. This represents a change ... in focus on the use of VMS data by CCAMLR and requires a contingent change in emphasis on data ... quality assurance processes in order to ensure that the VMS can be used with an appropriate degree of ...

    Meeting Document : SC-CAMLR-XXXIV/BG/19 : Author(s): CCAMLR Secretariat

  5. Further calculations of the effects of krill fishing on predators

    situation where predator survival rates depend on other factors in addition to krill biomass. This is ... random component in the relationship between krill biomass and availability. An examination of the ... consequences in the case of the blackbrowed albatross suggest that these other factors result in yet lesser ... estimate the levels of krill harvesting which would result in halving the sizes of various krill predator ...

    Meeting Document : WG-Krill-94/24 : Author(s): D.S. Butterworth and R.B. Thomson (South Africa)

  6. PHYSICAL CONTROLS ON CORAL COMMUNITIES ON THE GEORGE V LAND SLOPE: SOME WORKING HYPOTHESES

    been identified as a Vulnerable Marine Ecosystem in the Antarctic. The challenge is now to understand ... slope in depths of 570 – 950 m. Based on these results we propose some working hypotheses to explain ... their distribution. Icebergs scour to 500 m in this region and the lack of such disturbance is probably ... a factor allowing growth of rich benthic ecosystems. In addition, the richest communities are found ...

    Meeting Document : WS-VME-09/04 : Author(s): De Santis, L., Riddle, M.J., Beaman, R.J., Post, A.L., O’Brien, P.E.

  7. ADDING CATCH AT AGE AND SURVEY DATA TO THE 48.3 TOOTHFISH CASAL ASSESSMENT

    Abstract:  The catch-at-age based CASAL model for toothfish in Subarea 48.3, which was presented ... in 2007, is developed and extended here to include survey data. Additional adjustments to the model ... but in the past some cohorts have been missed by the survey. Fits to the survey CPUE are generally not ... retardation period and rate of tag loss. When these factors are included in the model the fits to the tag ...

    Meeting Document : WG-SAM-09/13 : Author(s): D.J. Agnew and M. Belchier (United Kingdom)

  8. Informative approaches to ageing Antarctic fishes

    considered in terms of the passage of time (chronological age), and it can also be examined as ' ... ;physiological time'. In this regard otoliths and post-mitotic tissues may contain a large amount of ... biological and ecological information about a fish's age and past life history. In otoliths this ... correlated and that species differences in shape exist. Regression analyses of otolith dimensions may make it ...

    Meeting Document : CCAMLR/86/FA/07 : Author(s): R.L. Radtke and K.T. Hill (USA)

  9. Risk assessment framework for subdividing the krill catch trigger level, including relevant background data and information

    Abstract:  At its annual meeting in 2016, WG-EMM recalled its obligation to review and advise on ... discussions on this subject in paragraphs 2.201 to 2.244 of its WG report.  WG-EMM recommended that work be ... in Area 48 through an e-group and to deliver these outputs to Scientific Committee (WG-EMM-16 ... , paragraphs 2.230-2.244).  These outputs would first be provided to WG-FSA for review, which in turn would ...

    Meeting Document : SC-CAMLR-XXXV/BG/37

  10. ENVIRONMENTAL FORCING AND SOUTHERN OCEAN MARINE PREDATOR POPULATIONS: EFFECTS OF CLIMATE CHANGE AND VARIABILITY

    potentially the location where the most rapid climate change is most likely to happen, particularly in the ... high-latitude polar regions. In these regions, even small temperature changes can potentially lead to ... major environmental perturbations. Climate change is likely to be regional and may be expressed in ... predator populations show periodicity in breeding performance and productivity, with relationships with the ...

    Meeting Document : WG-EMM-08/P06 : Author(s): P.N. Trathan, J. Forcada and E.J. Murphy

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