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1. Phytoplankton distribution in the mixed layer: implication to krill abundance

   Paper Title:  Phytoplankton distribution in the mixed layer: implication to krill abundance ... distribution of phytoplankton in the Antarctic Ocean. Since little is known about mixed layer dynamics in the ... Antarctic Ocean, we estimate the depth of the mixed layer and its turbulence intensity from an Ekman layer ... model. Available CTD data suggest that the mixing in the upper layer is less than what we expected ... particles at the base of mixed layer is growing with time, members of the cluster can be changed over the ... , t»2, can be expressed in terms of f..,. ( 1 0 ) Note that the above expression is valid as an ... only be. evaluated by a Lagrangian type model. They also note that " .. the power of the Lagrangian ... can be found. Unfortunately, however, very little is known about mixed layers in the Antarctic ocean ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 331–356 : Auteur(s): Yamazaki, H. and T.R. Osborn

2. Can toothfish catches be used to predict the presence of vulnerable benthic invertebrate taxa?

   , impacts from fishing would be higher than if VMEs are distributed randomly with respect to fishing ... Paper Title:  Can toothfish catches be used to predict the presence of vulnerable benthic ... fishing footprint. If high target species catch rates are associated with habitats where VMEs are found ... data available showed no evidence that the presence of any of six VME indicator taxa was informative in ... evidence that toothfish catch may be correlated with the presence of individual VME indicator taxa ... line segments that was observed. A total of 1 332 segments with known toothfish catch was available ... interpreted with caution as they may be contaminated with AXT samples. A coarse indicator of a correlation ... in occurrence can be observed if the proportion of observations with VME indicator taxa is ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 87–96 : Auteur(s): Parker, S.J. and M.H. Smith

3. 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

   eleginoides) are illustrated. While length-frequency data can be useful in assessments when integrated with ... -lived species such as toothfish cannot be inferred from length-frequency data alone Abstract ... highlight that interpretation of raw length-frequency data and single length-based indicators for stock ... status and fishing mortality is problematic and should be avoided. File:  04ziegler-et-al.pdf ... missing larger fish can be obtained with two different selectivity functions: one that catches large ... data can be useful in assessments when integrated with other informative estimators for stock ... rates and large IUU catches suggested that stocks were likely to be depleted (SC-CAMLR, 2007 ... - ed major problems with assessments that are based on length-frequency data alone. It is important ...

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

4. Factors that may influence the accuracy of abundance estimates from CCAMLR tag-recapture programs for Dissostichus spp. and best practice for addressing bias

   Paper Title:  Factors that may influence the accuracy of abundance estimates from CCAMLR tag ... to identify processes that may introduce bias into abundance estimates derived from tag-recapture ... programs. The methods that have been used in CCAMLR tag-recapture programs to mitigate such biases, or to ... , where it occurs, post-release depredation rates are a priority for new assessments that use tag ... to biases in tag-based abundance estimates, and methods that may be implemented to address these ... that may affect any tagging program or may need to be addressed when estimating stock abundance based ... the total population in a closed and fully mixed population will be equal to the ratio of tagged ... with respect to M, R and C. Where these assumptions are not met, parameter estimates may be biased ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 63–72 : Auteur(s): Welsford, D.C. and P.E. Ziegler

5. Brief report of the joint Soviet-Australian expedition of the USSR FRV Professor Mesyatsev to the Australian fishing zone around the territory of Heard and McDonald Islands, May-August, 1987

   Mesyatsev to the Australian fishing zone around the territory of Heard and McDonald Islands, May-August ... were taken so that phytoplankton and suspended sediments could be studied. At a further 37 stations ... aggregation to be more accurately defined and to speak with more assurance about the assessment of fish ... , there is a high variance in catches. Stocks should be separately calculated for areas with different ... stocks of fish are considerably under estimated. - 98 - It should also be considered that while the ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 75-103 : Auteur(s): Gherasimchook, V.V., V.N. Brodin, A.V. Kljausov, I.B. Russelo, P.V. Tishkov and N.B. Zaremba

6. Seabird mortality in the Patagonian toothfish longline fishery around Crozet and Kerguelen Islands, 2001–2003

   Kerguelen Islands, 2001–2003 Abstract / Description:  The legal Patagonian toothfish (Dissostichus ... Islands (Subarea 58.6 and Division 58.5.1 respectively) killed 26 668 seabirds between September 2001 and ... August 2003. Overall, the white-chinned petrel (Procellaria aequinoctialis) was the most frequently ... killed species, with males being more frequently caught than females. Grey petrels (Procellaria cinerea ... incidental mortal- ity for Crozet can be compared with that observed for the Prince Edward Islands (Subarea ... September 2001 and August 2003. Overall, the white-chinned petrel (Procellaria aequinoctialis) was the most ... et al., 1998; Weimerskirch et al., 2000). It thus should be stressed that the quality of the ... assumed that it was in accordance with the published regulations (Offi cial Journal of the French ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 53–80 : Auteur(s): Delord, K., N. Gasco, H. Weimerskirch, C. Barbraud and T. Micol

7. Sea-surface temperature and krill catches around South Georgia in December–February 1989–1991 and 1999–2001

   Current (ACC) infl uence. Under these hydrological conditions, krill that drifted along with Weddell Sea ... 1989–1991 and 1999–2001 Abstract / Description:  Monitoring of sea-surface temperatures (SSTs) in ... Subarea 48.3, which includes satellite surveys with GOES-E, Meteosat and in situ monitoring, together with ... conducting a krill fishery in the area during the entire year. The reliability of these forecasts could be ... obtained from research and fi shing surveys, it was found that SST monitoring could be used in order to ... could be verifi ed only by comparing forecasts with actual krill catches for a number of years. The ... grounds in Subarea 48.3 was especially prominent in 1999–2001 when com- pared to 1989–1991. It could be ... 1991 (Figures 3 and 4) with anomalies in 2000 and 2001 (Figures 5 and 6) reveals a signifi cant ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 165–174 : Auteur(s): Vanyushin, G.P

8. Operational interactions of sperm whales and killer whales with the Patagonian toothfish industrial fishery off southern Chile

   considered to be low. When mixed sightings of killer and sperm whales were encountered (n = 12), the rate of ... be associated with various ‘hotspots’ which had high fishing yields. This relationship tends to ... Paper Title:  Operational interactions of sperm whales and killer whales with the Patagonian ... (Physeter macrocephalus) and killer whales (Orcinus orca) with Patagonian toothfish (Dissostichus ... on the fi shing yield is considered to be low. When mixed sightings of killer and sperm whales were ... sperm whale densities were found to be associated with various ‘hotspots’ which had high fi shing ... information from fi shers and scientifi c observers suggesting that interactions are frequent, with negative ... tend to be present with higher frequency when killer whales are not, while killer whales tend to ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 127–140 : Auteur(s): Hucke-Gaete, R., C.A. Moreno and J. Arata

9. Interactions of Patagonian toothfish fisheries with killer and sperm whales in the Crozet Islands Exclusive Economic Zone: an assessment of depredation levels and insights on possible mitigation strategies

   Paper Title:  Interactions of Patagonian toothfish fisheries with killer and sperm whales in the ... % respectively of the 4 289 hauled lines. It was estimated that a total of 571 tonnes (€4.8 million) of ... whales were found to be responsible for the largest part of this loss (>75%), while sperm whales had a ... pods were involved in 81.3% of the interactions. Significant variations of interaction rates with ... ), represents a major issue. The implications of the latter can be economic, with significant losses for ... macrocephalus) that interact with demersal longlines. In the northern hemisphere, they remove sable fish ... had to be used to estimate the total number of sperm whales (Cormack, 2001). Classical sequential ... linear mixed models (GLMM) with ves- sel position considered as a random factor. Vessel identity was ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 179–195 : Auteur(s): Tixier, P., N. Gasco, G. Duhamel, M. Viviant, M. Authier and C. Guinet

10. Killer whale (Orcinus orca) and sperm whale (Physeter macrocephalus) interactions with longline vessels in the Patagonian toothfish fishery at South Georgia, South Atlantic

    areas with lower catch rates, indications are that depredation by sperm whales can lead to a decrease in ... with longline vessels in the Patagonian toothfish fishery at South Georgia, South Atlantic Abstract ... / Description:  Killer whale (Orcinus orca) and sperm whale (Physeter macrocephalus) interactions with longline ... with both species. A comparison of geographic plots of cetacean sightings during hauls to fi shing ... (toothfi sh). However, in areas with lower catch rates, indications are that depredation by sperm whales ... longlines has obvious economic impacts. There are, however, other factors that should also be of concern ... with an average line length of 7 655 hooks in the 2000, 2001 and 2002 seasons. Fishing depth in these ... this was that observers did not always make it clear whether cetaceans were actively interacting with ...

    Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 111–126 : Auteur(s): Purves, M.G., D.J. Agnew, E. Balguerías, C.A. Moreno and B. Watkins

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