Résultats de la recherche

1. Physical and behavioural influences on larval fish retention: contrasting patterns in two Antarctic fishes

   retention of the planktonic stages (eggs and larvae) of marine fish can play a key role in the maintenance ... grounds may contribute to the failure of the N. rossii population to recover from its collapse in the ... consistent feature in C. gunnari was a lack of larval exchange between the proximate South Georgia and Shag ... Abstract:  Waters around South Georgia are amongst the most productive in the Southern Ocean, and ...

   Meeting Document : WG-FSA-12/P10 : Auteur(s): E.F. Young, J. Rock, M.P. Meredith, M. Belchier, E.J. Murphy and G.R. Carvalho

2. Oceanic condition and zooplankton distribution/ abundance in Bransfield Strait during austral summer 1989/1990

   south of Deception Island, and meanders northeastward in the surface layer of the northern strait ... occupying 20 stations, and showed the highest biomass in zooplankton community. The highest number of salpa ... was shown in the northeastern entrance of Bransfield Strait, but low numbers were found along the ... to hydrographic condition, a total of 29 sampling stations was occupied for the CTD casts and ...

   Meeting Document : WG-KRILL-91/14 : Auteur(s): S.M. Kim and M.S. Suk (Korea)

3. Krill aggregation characteristics: spatial distribution patterns from hydroacoustic observations. Polar Biology (in press)

   is consistent with the absence of pronounced hydrographic or topographic concentrating mechanisms in ... scale of I km, suggesting that they could have been in the process of fragmenting or amalgamating ... that these could be useful in the development of fisheries-dependent indices of krill abundance. Polar ... biomass was log-normally distributed with a mean of 0.18 t. Only 3% of the aggregations were heavier than ...

   Meeting Document : WS-KCPUE-89/11 : Auteur(s): D.G.M. Miller and I. Hampton (South Africa)

4. Are penguins and seals in competition for Antarctic krill at South Georgia?

   consumers of Antarctic krill. In recent years the population of fur seals has increased whereas that of ... greater competition for the prey of macaroni penguins leading to the decline in their population. We use a ... 1989 and 2000. Foraging ranges of the two species showed considerable overlap in both years but the ... prevalence of krill in the diet of the two predators differed with less krill in the diet of macaroni ...

   Meeting Document : WG-EMM-01/22 : Auteur(s): K.E. Barlow, I.L. Boyd, J.P. Croxall, I.J. Staniland, K. Reid and A.S. Brierley (United Kingdom)

5. CLIMATICALLY DRIVEN FLUCTUATIONS IN SOUTHERN OCEAN ECOSYSTEMS

   role of physical and biological processes in generating fluctuations in the ecosystem around South ... Georgia in the South Atlantic sector of the Southern Ocean. Anomalies in sea surface temperature (SST) in ... changes in SST, and related fluctuations in winter sea ice extent, affect the recruitment and dispersal of ... °C over the next 100 years could lead to more than a 95% reduction in the biomass and abundance of ...

   Meeting Document : WG-EMM-08/P02 : Auteur(s): E.J. Murphy, P.N. Trathan, J.L. Watkins, K. Reid, M.P. Meredith, J. Forcada, S.E. Thorpe, N.M. Johnston and P. Rothery

6. Aerobic dive limit: how often does it occur in nature?

   constraint in their everyday behaviors. An important component of the physiological capability of any diving ... animal is it’s aerobic dive limit (ADL). The ADL has only been measured in a few species. The goal of ... within the cADL. In contrast, many individuals of both sea lion species exceeded the cADL, some by ... with the dive pattern of individual animals. In both Antarctic Fur Seals and Australian sea lions ...

   Meeting Document : WG-EMM-00/48 : Auteur(s): D.P. Costa, N.J. Gales and M.E. Goebel (USA)

7. Observer coverage in CCAMLR krill fisheries from 2011 to 2015

   Abstract:  The issue of observer coverage in krill fisheries has been the subject of extensive ... past five years comparing the number of days of fishing conducted by vessels in the krill fleet, with ... discussion at the Commission for a number of years, as the krill fishery is the only CCAMLR fishery that does ... not require 100% observer coverage. The Secretariat analysed the level of observer coverage for the ...

   Meeting Document : WG-EMM-16/11 : Auteur(s): CCAMLR Secretariat

8. DATA QUALITY ASSESSMENT IN CCAMLR: REQUIREMENTS FOR MINIMUM INTEGRITY TESTING TO ENSURE THAT DATA ARE FIT FOR PURPOSE

   confirmation of their validity. In the context of CCAMLR, data may undergo one set of quality testing in order ... important for prioritizing the work of the Secretariat in data quality assessment, and also in ensuring that ... Abstract:  The level of data quality assessment and ‘certification’ as ‘fit for purpose’ depends ... users of CCAMLR data are fully aware of the integrity procedures that have been applied to the data ...

   Meeting Document : WG-SAM-09/05 : Auteur(s): Secretariat

9. Longline sink rates on a bottom autoline vessel in New Zealand: draft

   the middle of an unweighted longline of this design sinks to 10m in a mean time of 63.0 seconds (n ... vessel F.V. San Aotea in New Zealand. The objective of the project was to determine line sink rate, and ... as would be used in normal fishing operations to test the effectiveness of weighting the longline as ... = 11, c.v. 16.7%), compared with the start of the longline which takes a mean time 31.1 seconds (n = 11 ...

   Meeting Document : WG-FSA-98/51 : Auteur(s): N.W. McL. Smith (New Zealand)

10. Fish and invertebrate by-catch from Australian fisheries for D. eleginoides and C. gunnari in Division 58.5.2

    . Preliminary results from a rajid tagging program are also presented. Total removals of by-catch in the trawl ... represent less than 1% and 2% respectively, of the total catch weight (target and non-target species) in ... -catch was caught representing 8% of the total catch. The length range of macrourids and rajids caught in ... slow growing and/or that the trauma of capture results in at least one year of very slow growth. Growth ...

    Meeting Document : WG-FSA-03/73 : Auteur(s): E.M. van Wijk and R. Williams (Australia)

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