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1. Surveys of breeding penguins and other seabirds in the South Shetland Islands, Antarctica, January-February 1987*

   to have been about 40% overall increase in the chinstrap population in the last 20-30 years, about three ... in the chinstrap population in the last 20-30 years, about three-fourths of the difference between our counts ... Memorandum NMFS Antarctic Marine Living Resources Program (AMLR)) File:  20-Shuford-and-Spear.pdf ... -30 years, about three-fourths of the difference between our counts and previous ones is due to more ... a jugula ire ait augmente globalement d'a peu pres 40% au cours des dernieres 20-30 annees, environ les ... 20-30 anos, aproximadamente tres cuartas partes de la diferencia entre nuestros recuentos y los ... rro rrpeAblAYlI\l1M OlleHKaM. XOTH, KaK Ka)KeTCH, 3a rrOCJIeAHl1e 20-30 JIeT o611\ee KOJII1QeCTBO ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 449-451 : Author(s): Shuford, W.D. and L.B. Spear

2. Archival and satellite-linked data recorders

   provides an overview of currently-available data recorders for use in research on marine animals ... . These recorders are deployed on freely swimming animals and gather data on aspects of an animal’'s diving ... animals. These recorders are deployed on freely swimming animals and gather data on aspects of an animal ... data recorders for use in research on marine animals. These recorders are deployed on freely swimming ... animals and gather data on aspects of an animal's diving behaviour. The records can be recovered in one ... la conduite de plongee d'un animal. Les enregistrements peuvent etre recuperes de deux fa~ons ... registradores de datos disponibles actualmente para uso en la investigacion sobre animales marinos. Estos ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 475-493 : Author(s): Hill, R.D.

3. Integrating Count Effort by Seasonally Correcting Animal Population Estimates (ICESCAPE): a method for estimating abundance and its uncertainty from count data using Adélie penguins as a case study

   Paper Title:  Integrating Count Effort by Seasonally Correcting Animal Population Estimates ... animal count data to a common reference point of breeding chronology for species with a complex temporal ... function of sampling availability. ICESCAPE (Integrating Count Effort by Seasonally Correcting Animal ... Integrating Count Effort by Seasonally Correcting Animal Population Estimates (ICESCAPE): a method ... IntegratIng Count effort by SeaSonally CorreCtIng anImal PoPulatIon eStImateS (ICeSCaPe): a method ... Canada Abstract This work describes a parametric bootstrap model for standardising animal count data ... availability. ICESCAPE (Integrating Count Effort by Seasonally Correcting Animal Population Estimates ... animales con respecto a un punto de referencia común de la cronología de reproducción para especies con ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 213–227 : Author(s): McKinlay, J., C. Southwell and R. Trebilco

4. Length-based assessment for mackerel icefish (Champsocephalus gunnari) at South Georgia

   the given harvest control rule to set a two-year total allowable catch (TAC). One issue is the accurate ... to set a two-year total allowable catch (TAC). One issue is the accurate identification of age cohorts ... 20 30 40 50 60 Figure 1: Raw icefish density ... survey Length (cm) D en si ty 10 20 30 40 50 10 20 30 40 5010 20 30 40 50 30 20 10 ... 0 30 20 10 0 (a) D en si ty 20 15 10 5 0 2009 survey Length (cm) 10 20 ... these numbers forward under the given harvest control rule to set a two-year total allowable catch (TAC). One ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 129–137 : Author(s): Hillary, R.M., C.T.T. Edwards, R.E. Mitchell and D.J. Agnew

5. A preliminary investigation of the possible effects of rhizocephalan parasitism on the management of the crab fishery around South Georgia

   of the main effects of the parasite is to render infected animals sterile. Parasitism can therefore reduce ... in spawning stock. The effects of harvesting both healthy and infected animals are contrasted with the effects ... of harvesting healthy animals only. Equilibrium and transition dynamics of the models are explored for ranges ... of parameter values. Results indicate a need to harvest or remove infected animals from the population ... of infected animals in the previous time-period. The time lag allows a year for newly-infected hosts ... of infected hosts in the same year rather than the previous year, but excluding newly-infected animals ... by: r = 1 (resilient) and r = 0.01 (sensitive). In each year the number of newly-infected animals in each ... harvesting. 0 0 10 20 30 40 50 60 70 O h Prevalence I resilient S-R (r=10) V sensitive S-R (r=0.01 ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 175–192 : Author(s): Basson, M

6. Estimating optimal observer coverage in the Antarctic krill fishery

   on board for about 30% of that season. They have achieved a rate of krill sampling equivalent to 18 ... , 20% of total season hauls sampled for krill and an equivalent or higher sampling proportion ... suggest that such strategies should be pursued for at least four years before the Scientific Committee ... on board for about 30% of that season. They have achieved a rate of krill sampling equivalent to 18 ... in the Antarctic krill fishery • a target coverage rate of >50% of vessels each year; • a target of >20 ... in g (% ) A ca m ar 20 02 30 7 A cr ux 20 02 35 4 C hi yo ... 46 3 22 4 13 7 61 56 30 41 12 Fe ol en t 20 05 43 1 43 6 32 6 75 ... 78 76 24 18 A tl an ti c N av ig at or 20 05 30 3 54 40 74 29 ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 139–154 : Author(s): Agnew, D.J., P. Grove, T. Peatman, R. Burn and C.T.T. Edwards

7. An index of per capita recruitment

   recruitment (PCR) is proposed such that where R 1 is the proportion of age-l animals sampled in year ... that: (i) post-recruit mortality does not vary over age or between years; (ii) 100% of age-l animals spawn; (iii ... to recruits per spawner when mortality is constant over all ages and years, and when all age-l animals spawn ... -l animals sampled in year y and M is the post-recruit mortality rate. The intent of the index ... in this time series, first appearing as a large mode at 20 to 30 mm length and in subsequent years ... is the proportion of age-l animals sampled in year y and M is the post-recruit mortality rate. The intent ... or between years; (ii) 100% of age-l animals spawn; (iii) a representative sample of the population ... is constant over all ages and years, and when all age-l animals spawn. These conclusions are insensitive ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 179–196 : Author(s): Hewitt, R

8. Natural mortality rate in the mackerel icefish (Champsocephalus gunnari) around South Georgia

   for 2 20 15 10 5 - E a, f F 0 8 6 -5 -10 -1 5 -20 3 4 5 6 7 8 9 Age (years ... of 0.55) and 0.35 (from SC-CAMLR, 1988) should be used. The following year the information in Frolkina ... recruited age classes, and no is the number sampled from the first fully recruited year class: To test ... (1991) and Olsen (1955) for each year is set out in Figure 1. Analysis of the data published ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 245–257 : Author(s): Everson, I

9. Is current management of the Antarctic krill fishery in the Atlantic sector of the Southern Ocean precautionary?

   estimated subarea biomass in up to 20% of years due to high variability in krill biomass indices. The actual ... in up to 20% of years due to high variability in krill biomass indices. The actual exploitation rate ... in 1991, is 0.62 million tonnes year –1, equivalent to ~1% of the regional biomass estimated in 2000. Each ... subarea has also had its own catch limit, between 0.093 and 0.279 million tonnes year –1, since 2009 ... exceed 9.3% of conservatively estimated subarea biomass in up to 20% of years due to high variability ... . the total weight of reproductively mature individuals) after 20 years of fishing should not be below 75 ... to simulations, harvesting the trigger level each year for 20 years would reduce the krill stock by 2% (SC ... in noisy time-series such as these. Multi- decadal series (30 to 40 years of data) (Henson et al., 2010 ...

   Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 31–51 : Author(s): Hill, S.L., A. Atkinson, C. Darby, S. Fielding, B.A. Krafft, O.R. Godø, G. Skaret, P.N. Trathan and J.L. Watkins

10. Length-based assessments revisited – why stock status and fishing mortality of long-lived species such as toothfish cannot be inferred from length-frequency data alone

    . 0 10 20 30 40 50 0. 0 0. 2 0. 4 0. 6 0. 8 1. 0 Immature selectivity Age (y) Se le ct iv ity ... 0 10 20 30 40 50 0. 0 0. 2 0. 4 0. 6 0. 8 1. 0 Truncated mature selectivity Age (y) 0 10 20 30 ... 2060 0. 0 0. 2 0. 4 0. 6 0. 8 1. 0 Year St oc k st at us 2000 2010 2020 2030 2040 2050 2060 ... 0. 0 0. 2 0. 4 0. 6 0. 8 1. 0 Year 2000 2010 2020 2030 2040 2050 2060 0. 0 0. 2 0. 4 0. 6 0. 8 1. 0 Year Immature ...

    Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 57–73 : Author(s): Ziegler, P.E., D.C. Welsford and A.J. Constable

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