Résultats de la recherche

1. CPUEs and body length of Antarctic krill density during the 1997/98 season in Area 48

   Abstract:  This paper summarizes the Japanese krill catch data during austral summer through winter of 1997/98 season in the Area 48. The fishing grounds were formed around the South Shetland Islands, west of the Antarctic Peninsula, and around the South Orkneys Islands from mid-December to mid-May

   Meeting Document : WG-EMM-99/48 : Auteur(s): S. Kawaguchi (Japan)

2. Plan for the eighth Antarctic survey by the RV Kaiyo Maru, Japan, in 1999/2000

   Author(s):  M. Naganobu, S. Kawaguchi, T. Kameda, Y. Takao and N. Iguchi (Japan) Title:  Plan for the eighth Antarctic survey by the RV Kaiyo Maru, Japan, in 1999/2000 Approval:  Approved

   Meeting Document : WG-EMM-99/49 : Auteur(s): M. Naganobu, S. Kawaguchi, T. Kameda, Y. Takao and N. Iguchi (Japan)

3. An index of per capita recruitment

   Abstract:  An index of per capita recruitment (PCR) is proposed such that Ri PCRy–1 = R1y/(1–R1y)eM where R1 is the proportion of age-1 animals sampled in year y and M is the post-recruit mortality rate. The intent of the index is to facilitate investigation of reproductive success and the factors

   Meeting Document : WG-EMM-99/50 : Auteur(s): R. Hewitt (USA)

4. An idea to incorporate potential recruitments in the krill density model

   Abstract:  A krill density model suggested during WG-EMM at Kochi (Dy?(1-Rl)-Dy-1?e-M=0) still involved uncertainties of age 1 krill. Present document improves the model by taking the uncertainties in to account, and assuming a reasonable mortality. The model suggested that if we expect the

   Meeting Document : WG-EMM-99/51 : Auteur(s): S. Kawaguchi and M. Naganobu (Japan)

5. Relationship between Antarctic krill (Euphausia superba) variability and westerly fluctuations and ozone depletion in the Antarctic Peninsula area

   Abstract:  An assessment of the environmental processes influencing variability in the recruitment and density of Antarctic krill (Euphausia superba) is important, as variability in krill stocks affects the Antarctic marine ecosystem as a whole. We have assessed variability in krill recruitment and

   Meeting Document : WG-EMM-99/52 : Auteur(s): M. Naganobu, K. Kutsuwada, Y. Sasai and T. Taguchi (Japan) and V. Siegel (Germany)

6. Note: time series of polynyas extent in the Antarctic ocean

   Author(s):  K. Segawa and M. Naganobu (Japan) Title:  Note: time series of polynyas extent in the Antarctic ocean Approval:  Approved

   Meeting Document : WG-EMM-99/53 : Auteur(s): K. Segawa and M. Naganobu (Japan)

7. Observations on a large number of icebergs in the krill fishing ground (Subarea 48.1) in May 1999

   Author(s):  Japan Deep Sea Trawlers Association Title:  Observations on a large number of icebergs in the krill fishing ground (Subarea 48.1) in May 1999 Approval:  Approved

   Meeting Document : WG-EMM-99/54 : Auteur(s): Japan Deep Sea Trawlers Association

8. Distribution and abundance of Antarctic krill (Euphausia superba) around the South Shetland Islands, Antarctic Ocean

   Author(s):  D. Kang, D. Hwang and S. Kim (Republic of Korea) Title:  Distribution and abundance of Antarctic krill (Euphausia superba) around the South Shetland Islands, Antarctic Ocean Approval:  Approved

   Meeting Document : WG-EMM-99/55 : Auteur(s): D. Kang, D. Hwang and S. Kim (Republic of Korea)

9. Modelling the dynamics of krill populations in the Antarctic Peninsula region

   Abstract:  The current long-term estimates of mean recruitment rates suggest that the population is unsustainable, as they are too low to maintain the estimated mortality rate. The variable annual estimates of recruitment to the population can be used to model in detail interannual variation in the

   Meeting Document : WG-EMM-99/56 : Auteur(s): E.J. Murphy (United Kingdom), A. Constable (Australia) and D. Agnew (United Kingdom)

10. Penguins, fur seals, and fishing: prey requirements and potential competition in the South Shetland Islands, Antarctica

    Abstract:  Antarctic and sub-Antarctic seabirds, marine mammals, and human fisheries concentrate their foraging efforts on a single species, Antarctic krill (Euphausia superba). Because these predators may have a significant effect on krill abundance, we estimated the energy and prey requirements

    Meeting Document : WG-EMM-99/57 : Auteur(s): D.A. Croll and B.R. Tershy (USA)

Pages