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1. Fish Heaven: a Monte Carlo, spatially explicit single species fishery model for the testing of parameter estimation methods

   object oriented framework to allow for the possible extension in a number of directions. In particular it ... complete it is still seen as a piece of software in development. Currently the software is designed to ... package, reading in the output files of Fish Heaven. A number of extensions are planned for the software ... and these are described in the appropriate sections of the manual as 'further improvements' ...

   Meeting Document : WG-FSA-00/36 : Auteur(s): I. Ball and A. Constable (Australia)

2. Development of the Southern Ocean Continuous Plankton Recorder survey

   very high abundance of zooplankton in the uppermost 20 m of the permanently open ocean zone between the ... Abstract:  The Continuous Plankton Recorder (CPR) Type I was first used in Antarctic waters during ... the 1925–1927 Discovery Expedition, and has been used successfully for 70 years to monitor plankton in ... to Antarctic waters when the Australian Antarctic Division initiated a survey of the Southern Ocean ...

   Meeting Document : WS-BSO-07/P4 : Auteur(s): Hosie, G., M. Fukuchi and S. Kawaguchi

3. On the instantaneous natural mortality rate of Champsocephalus gunnari, South Georgia (Subarea 48.3)

   composition of catches from 1964/65 to 1968/69 and the age/length key for the first half of 1972 were used in ... Paper Title:  On the instantaneous natural mortality rate of Champsocephalus gunnari, South ... Georgia (Subarea 48.3) Abstract / Description:  The instantaneous rate of natural mortality (M) of ... Champsocephalus gunnari in the South Georgia area was assessed using six different methods. Data on size ... . In practically every case the estimate of the mean value of M was either equal to or greater than ... * * Abstract The instantaneous rate of natural mortality (M) of Champsocephalus gunnari in the South Georgia ... 1968/69 and the age/length key for the first half of 1972 were used in the calculations. The results ... Assessment used M=0.50 in its calculations as well as the previously accepted estimate of 0.35. Since ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 313–326 : Auteur(s): Frolkina, G.A. and R.S. Dorovskikh

4. Estimation of effective sample size for catch-at-age and catch-at-length data using simulated data from the Dirichlet-multinomial distribution

   ‘effective sample size’ (ESS) in integrated assessments is an approximate but simple way of modelling the ... empirical coefficient of variation (CV) in the proportions, with one being based on an existing CV model ... method. To account for process error in the calculation of the ESS, the lack of fit of the age-structured ... random variation across years in one of the selectivity function parameters and similarly for the ... approximation to the true distri- bution of N is correct up to second-order moments in that the mean and (co ... Email – steve.candy@aad.gov.au Abstract The incorporation of ‘effective sample size’ (ESS) in ... for the empirical coefficient of variation (CV) in the proportions, with one being based on an ... than the best haul-level method. To account for process error in the calculation of the ESS, the lack ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 115–138 : Auteur(s): Candy, S.G

5. An overview of Southern Ocean zooplankton data: abundance, biomass, feeding and functional relationships (submitted to the 2008 Joint CCAMLR-IWC Workshop)

   for differences in the extent of identification of early larval stages. Likewise, the time of year ... overview is provided of the diversity and basic biology of SO zooplankton, with an emphasis on abundance ... , distribution and feeding. Second, advice is provided on the uses, strengths and limitations of zooplankton data ... as inputs to SO data compilations or food-web models. Copepods overall comprise >75% of the SO ... been published in a wide variety of journals. The data behind these publica- tions are mainly outside ... , insights are provided for modellers of caveats in data compi- lations and in the functional rate processes ... in the SO range over four orders of magnitude in body size, from tiny (<100 μm) copepod nauplii to ... total mesozooplankton across most of the SO in terms of biomass, abundance, grazing activity and ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 171–218 : Auteur(s): A. Atkinson, P. Ward, B.P.V. Hunt, E.A. Pakhomov and G.W. Hosie

6. Estimation of natural mortality using catch-at-age and aged mark-recapture data: a multi-cohort simulation study comparing estimation for a model based on the Baranov equations versus a new mortality equation.

   functional form of selectivity was correctly specified in the BODE model, both models gave close to unbiased ... selectivity function, the bias and imprecision in estimates of M increased by no more than 2% for the CCODE ... number of recaptures-at-age and model the population numbersat- age by annual difference equations ... of 500 000. Simulations which passed catch-at-age numbers to the estimation algorithm after ... error were also carried out for each model in order to investigate the effect on estimation of M ... form of selectivity was correctly specified in the BODE model, both models gave close to unbiased and ... selectivity function, the bias and imprecision in estimates of M increased by no more than 2% for the CCODE ... model parameters and then calcu- lating allowable catch under the set of decision rules applied in ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 1–27 : Auteur(s): Candy, S.G.

7. A tale of two islands: contrasting fortunes for sub-Antarctic skuas at the Prince Edward Islands

   coverage in 2008, whereas the number of skua nests on Marion Island was barely half that counted in 2001 ... removal of cats from Marion Island in the early 1990s has benefited the major native predator of burrowing ... -Antarctic islands, and can be used to monitor the health of burrowing petrel populations. A survey of skuas ... at the Prince Edward Islands was conducted during December 2008, repeating a previous survey in ...

   Meeting Document : WG-EMM-10/P03 : Auteur(s): P.G. Ryan, P.A. Whittington and R.J.M. Crawford

8. Long term movements and activity patterns of an Antarctic marine apex predator: the leopard seal

   advance in our limited knowledge of leopard seals. We show the longest periods of tracking of leopard ... , similar to those observed in other predators in the region including the krill fishery. Analysis of ... dynamics of the region’s fisheries, shows an understanding of leopard seal ecology is vital in the ... ecosystems through local predation. Here we report on the successful use of micro geolocation logging sensor ...

   Meeting Document : WG-EMM-18/P09 : Auteur(s): I.J. Staniland, N. Ratcliffe, P.N. Trathan and J. Forcada

9. Climate Change, Longevity Overfishing and Precautious Management of the Area 88 Toothfish Fishery

   of this species to climate-related factors; and 3) an increase in that sensitivity owing to the ... Abstract:  Three aspects of current management of the “exploratory” Antarctic toothfish ... (Dissostichus mawsoni) fishery in Area 88 indicates that less-than-full precaution is being exercised in the ... targeted removal of the oldest, most successful and most fecund toothfish. The current strategy is to ...

   Meeting Document : WG-FSA-09/07 : Auteur(s): D. Ainley (USA), M. Massaro, G. Ballard (New Zealand) and J.T. Eastman (USA)

10. Modelling the circumpolar distribution of Antarctic toothfish using correlative species distribution modelling methods

    used to predict the circumpolar distribution of habitat suitability for Antarctic toothfish. Potential ... are the types of CCAMLR data (i.e. presence of the species and/or attributes) and modelling algorithms ... suggested and highlighted for discussion. Preliminary results are provided to demonstrate the application of ... :  Modelling the circumpolar distribution of Antarctic toothfish using correlative species distribution ...

    Meeting Document : WG-FSA-14/65 : Auteur(s): L.M. Robinson, K. Reid (Secretariat)

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