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1. Areal and seasonal extent of sea-ice cover off the northwestern side of the Antarctic Peninsula: 1979 to 1996

   the SMMR data series, images were selected as close as possible to the middle day of each month. Images ... penguin populations: reduced competition with whales or a loss of sea-ice due to environmental warming ... Paper Title:  Areal and seasonal extent of sea-ice cover off the northwestern side of the ... Antarctic Peninsula: 1979 to 1996 Abstract / Description:  Analysis of seasonal sea-ice cover of an area ... measuring 1.25 x 10 6 km 2 off the northwestern side of the Antarctic Peninsula indicates that there were ... four periods of extensive ice cover during the last 18 years. Variability in seasonal timing, areal ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 65–73 : Author(s): Hewitt, R

2. Acoustic data analysis and models of krill spatial distribution

   distribution is highly variable in space and time (Marr 1962), and krill often aggregates into dense swarms ... , 85 pp. MARR, J.W. 1962. The natural history and geography of Antarctic krill Euphausia superba ... Paper Title:  Acoustic data analysis and models of krill spatial distribution Abstract ... descriptors of krill spatial aggregation: power spectra for krill biomass fluctuations in space, semivariogram ... (spatial autocorrelation of krill biomass) and the frequency distribution of krill biomass estimate. The ... wavenumber spectrum resembles a white noise at scales of 2-20 km, although at scales smaller than 1 km the ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 311–329 : Author(s): Morin, A., A. Okubo and K. Kawasaki

3. 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.

   that are still at liberty (i.e. have not died due to natural or fishing mortality up to year yi) so this number ... separate multinomial dis- tributions for each year with expected proportions given by , ,/åi iy a y aaC ... , tag mortality rate, tag loss rate, detection rate, and q were assumed to be 0.0, 0.0, 1.0 and 1.0 ... Paper Title:  Estimation of natural mortality using catch-at-age and aged mark-recapture data: a ... , using multiple cohorts and multiple years of catch-at-age and aged mark-recapture data was tested using ... simulation. Alternative fishing selectivity functions of age of dome-shaped versus sigmoidally shaped were ... number of recaptures-at-age and model the population numbersat- age by annual difference equations ...

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

4. Identifying taxonomic groups vulnerable to bottom longline fishing gear in the Ross Sea region

   - able for Antarctic species are mostly limited to dis- tribution and population density, but recruitment ... or rarity – an area or ecosystem that is unique or that contains rare species whose loss could ... at either extreme, but in the middle, categorising some species as vulnerable or not will ultimately ... quickly, while others cease growth or subsequently die (Dayton, 1979; Kaiser et al., 2006). Sponges ... vulnerable marine ecosystems (VMEs) requires a specific list of the taxa that are considered vulnerable in ... the fishery being assessed. New Zealand identified an interim list of taxa to monitor in fishery by ... -catch in the Ross Sea as part of its benthic fisheries impact assessment. The rationale for including or ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 105–127 : Author(s): Parker, S.J. and D.A. Bowden

5. An assessment of the impact of krill fishery on penguins in the South Shetlands

   , activity budgets and foraging trip duration (Everson, 1987; Trivelpiece et al., 1987). During shipboard ... and Demer (1993). (3) Distribution of krill catches in the middle 10 days of March 1991. Impact ... Paper Title:  An assessment of the impact of krill fishery on penguins in the South Shetlands ... Abstract / Description:  An assessment of the competition between the Japanese krill (Euphausia superba ... the northern shelf of either Livingston or Elephant Island. In contrast, food consumption by penguins ... is estimated to be high to the north of King George, Nelson and Robert Islands (9 746 tonnes/10-day ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 107–128 : Author(s): Ichii, T., M. Naganobu and T. Ogishima

6. Note on estimating krill abundance from acoustic data on individual aggregations

   . Forbes and Nakken, 1972; Johannesson and Mitson, 1983; Maclennan and Simmonds, 1992). This method ... , Hobart, Australia: 19 pp. FORBES, S.T. and O. NAKKEN (Eds). 1972. Manual on methods for fisheries ... Abstract / Description:  The fundamental equations and assumptions underlying estimation of krill abundance ... differences of the two approaches are highlighted. It is concluded that the echo-integration approach is ... superior for the estimation of regional krill abundance and its variance since it is easier to apply ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 219–223 : Author(s): Hampton, I. and D.G.M. Miller

7. Abundance, size and maturity of krill (Euphausia superba) in the krill fishing ground of Subarea 48.1 during the 1990/91 austral summer

   the mean were calculated from: CL(di) = ± t (Ni -1,0.05)~Var(di) where di = mean density for i-th zone ... of the biomass were given by: Var(Bi) = A/Var(di), CL(Bi) = ± t(Ni -1,0.05)~Var(Bi) 188 where Bi ... for the total biomass. 3.2.4 Spatial Distribution of Lengths and Maturity Stages ofKrill The krill stock ... % decline in the number of penguins occupying nests compared to last season, and longer feeding trips ... Paper Title:  Abundance, size and maturity of krill (Euphausia superba) in the krill fishing ... ground of Subarea 48.1 during the 1990/91 austral summer Abstract / Description:  Acoustic and net ... sampling surveys for krill were conducted in the krill fishing ground north of the South Shetland Islands ... of krill were observed. The survey area was divided into four zones: oceanic, slope frontal, neritic ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 183–199 : Author(s): Ichii, T., H. Ishii and M. Naganobu

8. The Soviet krill fishery in the Atlantic Sector of the Antarctic from 1977 to 1991: fishing effort distribution and interannual patterns

   ecosystem. Limited data on the deployment of the Soviet krill fi shing fl eet from 1972 to 1985 ... in the zonal (along longitude) and meri- dional (along latitude) directions (Kats, 1960). In the southern ... to the south and east respectively. RESULTS AND DISCUSSION The Soviet krill fi shery recorded the highest ... Association (Sevryba, based in Murmansk) (Table 3). In 1982 and 1983, vessels of the Far East Fishery ... Paper Title:  The Soviet krill fishery in the Atlantic Sector of the Antarctic from 1977 to 1991 ... fishery in the Atlantic Sector of the Antarctic from 1977 to 1992 are discussed. The total fishing effort ... from 1977 to 1991 was 50 086 vessel-days fished, in Subareas 48.3 (45% of the total for the period ... ), 48.2 (36%) and 48.1 (19%). Three distinct patterns in the distribution of monthly fishing effort ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 1–13 : Author(s): Litvinov, F.F., V.A. Sushin, G.A. Chernega and O.A. Berezhinsky

9. Spatially explicit population dynamics models for Antarctic toothfish in the Ross Sea region

   . These biomass and abundance plots should be regarded as relative population dis- tribution plots because ... to the north, with smaller fish dis- tributed on the shelf, larger fish on the slope and spawning fish ... methods (Chapman and Robson, 1960; Hoenig, 1983; Punt et al., 2005), and adopted by CCAMLR for use ... Mormede et al. 28 areas. Again, as in the spatial operating model, tag shedding, tag loss, tag growth ... dynamics of spatial heterogeneity of the population along with age structure, movement and reproductive ... region and used as operating models to evaluate the performance of single-area assessments. The models ... shapes of the preference functions were established through iterative model testing whilst the parameters ... defining the preference functions were estimated within each model. The spatial structure of the models ...

   Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 19–37 : Author(s): Mormede, S., A. Dunn, S. Hanchet and S. Parker

10. Krill distribution in the western Atlantic sector of the Southern Ocean during 1983/84, 1984/85 and 1987/88 based on the results of Soviet mesoscale surveys conducted using an Isaacs-Kidd midwater trawl

    extended from the eastern Scotia Sea, enveloped South Georgia from the east and continued along ... ) in approximately 110 days, i.e. from early November to the middle of February. In this regard, krill stock ... Paper Title:  Krill distribution in the western Atlantic sector of the Southern Ocean during 1983 ... /84, 1984/85 and 1987/88 based on the results of Soviet mesoscale surveys conducted using an Isaacs ... -Kidd midwater trawl Abstract / Description:  In this paper we consider the results of three mesoscale ... surveys covering a wide area of krill distribution between the Antarctic Peninsula and South Georgia ...

    Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 59–70 : Author(s): Sushin, V.A. and K.E. Shulgovsky

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