Résultats de la recherche

1. SPATIAL PATTERNS IN MACKEREL ICEFISH DIET PROVIDES INSIGHTS INTO KRILL ABUNDANCE AND DISTRIBUTION

   low in Antarctic krill (7 % IRI) compared with similar data for the same month in 2004-2006. The ... results are consistent with other indicators of krill availability on the South Georgia shelf, which ... occurrence of krill in the diet with earlier data sets (1967-1992) show that 2009 is not unique, as similarly ... poor krill years occurred in 1969, 1978 and 1991. Spatial analysis of icefish diet indicates ...

   Meeting Document : WG-EMM-09/27 : Auteur(s): M.A. Collins and C.E. Main (United Kingdom)

2. An overview of tagging skates (Rajiformes) and CCAMLR skate tagging data

   , longevity, discard survival and abundance. Most Antarctic skate species are little known and, coupled with ... tag loss and tag shedding rates in fish (with emphasis on elasmobranchs), a summary of CEFAS tagging ... of the tagging work undertaken under the auspices of CCAMLR in the Southern Ocean with comments on ... conducted in the CCAMLR area for several years now, only preliminary observations have been presented to ...

   Meeting Document : WG-SAM-13/25 Rev. 1 : Auteur(s): S.R. McCully, D. Goldsmith, G. Burt, R. Scott and J.R. Ellis (United Kingdom)

3. An overview of tagging skates (Rajiformes) and CCAMLR skate tagging data

   , longevity, discard survival and abundance. Most Antarctic skate species are little known and, coupled with ... tag loss and tag shedding rates in fish (with emphasis on elasmobranchs), a summary of CEFAS tagging ... of the tagging work undertaken under the auspices of CCAMLR in the Southern Ocean with comments on ... conducted in the CCAMLR area for several years now, only preliminary observations have been presented to ...

   Meeting Document : WG-FSA-13/33 : Auteur(s): S.R. McCully, D. Goldsmith, G. Burt, R. Scott and J.R. Ellis (United Kingdom)

4. Rapport de pêcherie 2015 : Pêcherie fermée de Dissostichus spp. – divisions 58.4.4a et 58.4.4b

   for females and from 5 to 48 years for males. These ages may be overestimated by one year due to an ... the CCAMLR fishing season is represented by the year in which that season ended, e.g. 2015 represents ... , which was below the research catch limit set for that year (Table 1). 5. From 2008 to 2014, a single ... Japanese-flagged longliner has conducted research fishing in accordance with a research plan submitted ...

   Document : Site Section: Publications

5. VARIATION IN DEMERSAL FISH SPECIES RICHNESS IN THE OCEANS SURROUNDING NEW ZEALAND: AN ANALYSIS USING BOOSTED REGRESSION TREES

   species richness, with highest richness occurring at depths of 900 to 1000 m, and with a broad plateau of ... moderately high richness between 400 and 1100 m. Richness was higher both in waters with high surface ... temperature was also important, with lower richness occurring in waters that were cooler than expected given ... constrained to reflect the known performance of trawl gear. Species richness declined with increasing cod-end ...

   Meeting Document : WS-VME-09/P04 : Auteur(s): Leathwick, J.R., Elith, J., Taylor, P., Francis, M.P., Hastie, T.

6. Numerical model of ecosystem including Euphausia superba Dana as a key species in circumpolar region

   integrated model with the above 5 items. This year, we have developed an OGCM and a one dimensional ecosystem ... ) with seven compartments and coupled with a one dimensional mixed layer model for calculating the ... applied to primary production in Antarctic Ocean (3) to develop an ecosystem model able to describe krill ...

   Meeting Document : WG-Krill-94/26 : Auteur(s): M.J. Kishi and M. Naganobu (Japan)

7. Fishery Report: Dissostichus eleginoides Heard Island (Division 58.5.2)

   . Random length samples were combined with year-specific ALKs to obtain catch-at- age data for input as ... observations in CASAL for each year between 1997 and 2008. Proportions-at-length, that were combined with ... catch older fish (>20 years) than trawl gear which has high selectivity for 6-year-old fish ... across years in estimated year-class strength. Recruitment surveys 11. Surveys of young toothfish ...

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8. 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 y and M ... largest with high values of R 1; increasing M tends to offset this effect but only slightly. A simple ... the functional relationship between spawners and recruits. PCR is biased low with age-specific decline ... in mortality and reduction in the proportion of age-l spawners. Introducing year-to-year random ... with one year of mortality removed: In addition to compounding the results of two PCRy_l ... capita recruitment (PCR). Such a measure could be obtained with surveys in successive years provided ... , R3, R4 . . . are the proportions of N that are in the age-l, age-2, age-3, age-4 . . . year classes ... ; M2, M3, Mq . . . the post- recruit mortality rates for age-2, age-3, age-4 ... year classes; and y ...

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

9. A summary of the commercial fishery for mackerel icefish Champsocephalus gunnari in Subarea 48.3 during the 1997/98 season

   briefed before the short trip to South Georgia. It is unclear whether the poor catches by the FV Betanzos ...

   Meeting Document : WG-FSA-98/53 : Auteur(s): G. Parkes, A. King and C. Jones (United Kingdom)

10. Fishery Report 2017: Exploratory fishery for Dissostichus mawsoni in Division 58.4.2

    , paragraph 3.68). Those years that include quarantined data are indicated with a superscript q and vessel ... from areas with assessed fisheries and are not more than 3–4% of the estimated stock size. 9. In ... ) in each year are provided. Note: length-frequency distributions are only presented for those years ... represented by the year in which that season ended, e.g. 2015 represents the 2014/15 CCAMLR fishing season ...

    Document : Site Section: Publications

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