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1. Zooplankton: Trophic modelling of the Ross Sea

   in E. crystallorophias abundance to estimate an annual average density. E. crystallorophias lives to the age of 5 years ... to considerable uncertainty. E. superba live to the age of five years or more, so that large variations in adult ... 1997). Mortality is likely to be higher for larval E. crystallorophias, and decrease with age. Without ... into production by krill in the Ross Sea may be obtained by the development of an age-structured population model ...

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2. Fishery Report 2015: Exploratory fishery for Dissostichus spp. in Subarea 88.1

   for ageing each year, and used to construct annual area-specific age–length keys (ALKs). Age data were ... applied to the scaled length- frequency distributions for each year to produce annual catch-at-age ... age of males and females in the catch in the north with a slight increase in the early years followed ... size at about 10–15 years of age and can live to at least 27 years, whereas M. caml reaches full size ... Description / Abstract:  Fishery Report 2015: Exploratory fishery for Dissostichus spp. in Subarea ...

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3. Fishery Report 2016: Exploratory fishery for Dissostichus spp. in Subarea 88.1

   by observers from New Zealand vessels have been selected for ageing each year, and used to construct annual ... for each year to produce annual catch-at-age distributions (WG-FSA- 15/36). 29. Although the length ... with a slight increase in the early years followed by a decline since 2005 (WG-FSA-15/36). The mean age ... ) and incorporating the survey age structure into the assessment had the effect of stabilising the index of year ... Description / Abstract:  Fishery Report 2016: Exploratory fishery for Dissostichus spp. in Subarea ...

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4. Krill Fishery Report 2016

   seasons; no less than 75% of vessels during the 2018/19 and 2019/20 fishing seasons; and 100% coverage ... 2014 2015 2016 48.1 23 17 50 17 75 80 77 88 92 92 64 48.2 0 20 40 48 89 82 76 88 93 83 67 48.3 53 ... biomass dropping below 20% of its median pre-exploitation level over a 20-year harvesting period is 10 ... %. 2. Choose a yield, γ2, so that the median escapement at the end of a 20-year period is 75% of the median ...

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5. Fishery Report: Exploratory fishery for Dissostichus spp. in Division 58.4.1

   using an age-structured TISVPA model and a dynamic Schaefer-production model. The analysis suggested ... season was from 1 December 2009 to 30 November 2010. Environmental protection in this fishery ... ; final reported catch: 51 tonnes). SSRU C, and consequently the fishery, was closed on 20 February 2010 ... 1(b): Catch of Dissostichus spp. in Division 58.4.1 reported by SSRU (source: fine-scale data pro-rated ...

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6. Schedule of Conservation Measures in Force 2012/13

   to m fi sh in g in th e C on ve nt io n A re a H ig h se as (s ee p ar ag ra ph ... 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 ... ar ct ic S pe ci al ly M an ag ed a nd P ro te ct ed A re as In de fin ite 91 ... in accordance with Article IX of the Convention on the Conservation of Antarctic Marine Living Resources ...

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7. Fishery Report: Dissostichus eleginoides and Dissostichus mawsoni (TOT) South Sandwich Islands (Subarea 48.4)

   , with the exception of 2009 and 2011 for which catch-at-age data were used based on ageing of a random sample ... of otoliths collected during 2009 and 2011. Size-at-age data were also included to inform estimates of von ... to 2012, with an initial unexploited equilibrium age structure, and with a Beverton-Holt stock-recruit ... relationship with fixed steepness. Model estimation 18. The catch proportions-at-length and age data were ...

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8. Fishery report: Exploratory fishery for Dissostichus spp. in Subareas 88.1 and 88.2

   2005 0 10 20 30 40 50 0 100 200 300 400 500 600 700 Female 2005 Figure 5: Scaled age ... ity 10 20 30 40 50 0.0 0.5 1.0 1.5 Male shelf fishery selectivity Age S el ec tiv ity 10 20 ... 30 40 50 0.0 0.5 1.0 1.5 Female shelf fishery selectivity Age S el ec tiv ity 10 20 30 40 50 ... 0.0 0.5 1.0 1.5 Male slope fishery selectivity Age S el ec tiv ity 10 20 30 40 50 0.0 0.5 ...

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9. Fishery Report: Exploratory fishery for Dissostichus spp. in Division 58.4.1

   an assessment of D. mawsoni in Division 58.4.1 using an age-structured TISVPA model and a dynamic Schaefer ... season was from 1 December 2010 to 30 November 2011. Environmental protection in this fishery ... data pro-rated by total reported catch in Table 1(a)). Season D. eleginoides D. mawsoni ... be simply a differential immature/mature distribution of animals of one stock, as is seen in the Ross Sea ...

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10. Fishery Report: Exploratory fishery for Dissostichus spp. in Division 58.4.1

    4. 18. WG-FSA-09/14 Rev. 1 presented an assessment of D. mawsoni in Division 58.4.1 using an age ... 1 December 2008 to 30 November 2009. Figure 1: General map of Division 58.4.1 and location of SSRUs ... -scale data pro-rated by total reported catch in Table 1(a)). Season D. eleginoides D. mawsoni ... be simply a differential immature/mature distribution of animals of one stock, as is seen in the Ross Sea ...

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