Résultats de la recherche

1. Antarctic fur seal (Arctocephalus gazella) pup growth rates obtained at Cape Shirreff, Livingston Island, South Shetlands: 1994/95 to 1997/98 (CEMP Index C2, Procedure B)

   's population was observed during 1997/98. No evidence for an ENSO phenomenon influence is ... ) was attained when large sea-ice extent was reported, while the two lowest growth rates for males (1994 ... differences on reproductive strategies between populations of A. gazella. An important decrease in A. gazella ... least square linear regression of weight against age. Strong correlation was found between variables for ...

   Meeting Document : WS-AREA 48-98/18 Rev. 1 : Auteur(s): R. Hucke-Gaete, V. Vallejos and D. Torres (Chile)

2. Networks and tools to enhance collaboration and coordination of observational activities

   held between the Southern Ocean Observing System (SOOS) and CCAMLR in April 2018 to: Improve ... understanding of roles and operations between the two communities Identify reciprocal pathways of communication ... for exchange of information Identify synergies in data requirements and data management planning This ... -CAMLR-XXXVII/BG/19 submitted jointly by the USA, Belgium and SOOS. This report provides an overview of ...

   Meeting Document : SC-CAMLR-XXXVII/BG/31 : Auteur(s): Submitted by SOOS

3. Consideration of major issues in ecosystem monitoring and management

   outlined. This highlights the need for information on harvested and dependent species their interaction and ... bringing these various components together as an ecosystem approach to management is discussed. Author(s ... Abstract:  The requirements of an ecosystem approach to management of Southern Ocean resources are ... the manner in which their populations vary naturally. Large scale interactions are catered for the ...

   Meeting Document : WG-EMM-01/73 : Auteur(s): I. Everson (United Kingdom)

4. A balanced model of the food web of the Ross Sea, Antarctica

   information on trophic links across all the major biota of the Ross Sea and tests for data consistency. The ... recent year (1990–2000). The focus of the model is on the role of Antarctic toothfish in the food web ... efficiency) and all groups together was 1.7%, and for diet fractions was 0.6%. Large but not implausible ... effects of the fishery for Antarctic toothfish (Dissostichus mawsoni). The model consolidates quantitative ... given predator based on an estimate of the quality of the available diet information for that predator ... . The model is an important step towards understand- ing the potential effects of the fishery for ... al., 2007). The aim of the present study is to model an average or typical year, rep- resentative of ... assumption that all parts of the ecosystem will be in balance in an average year. These balance equa- tions ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 1–31 : Auteur(s): Pinkerton, M.H., J.M. Bradford-Grieve and S.M. Hanchet

5. Interannual variability of polynya extent in the Antarctic Ocean

   Abstract:  There are two general kinds of polynya (an ice-free area within sea ice borders ... reports on the place, time and shape of the coastal polynyas. Accordingly, we pursued the transition of ... are trending like a pulse wave. In the whole Antarctic Ocean, peak years of polynyas extent are in the ... 1981/82 (from July 1981 to June 1982), 1991/92 and 1995/96. In the Antarctic Peninsula area, peak years ...

   Meeting Document : WG-EMM-01/34 : Auteur(s): M. Naganobu and K. Segawa (Japan)

6. Age, growth and size at sexual maturity of Macrourus carinatus from the CCAMLR fisheries in division 58.5.2

   samples collected during two research voyages to Heard and McDonald Islands (Division 58.5.2) in 1992 and ... for both sexes combined, resulting in values of: L8 = 635 mm, K = 0.088 and t0 =-1.8. The size at ... was 417 mm total length and the size at which 50% of the fish population have spawned for the first ... time, Lm50 was 512 mm total length. An updated length-weight relationship is provided from 633 ...

   Meeting Document : WG-FSA-02/48 : Auteur(s): E.M. van Wijk, R. Williams and A.J. Constable (Australia)

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

   Antarctic Ocean, we estimate the depth of the mixed layer and its turbulence intensity from an Ekman layer ... . However, the effect on the dynamics is vital, affecting the distribution of particles in the upper ocean ... follow ( 2 ) (Gregg, 1987). Figure 2 shows the dissipation profile for UlO = 1, 5, 10 and 20 m sec-1 ... A is a constant of an order one. For the sake of simplicity we have used A= 1 . Therefore by ... (solid line) and the dissipation spectrum (dotted line) for N=0.001 rad S-1 and U10=1, 5, 10 and 20 m ... sec-1 at 61°S. Since N can be an order of magnitude larger than 0.001 Figure 4 is prepared for N=0.01 ...

   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

8. Distribution and ecology of Chaenocephalus aceratus (Channichthyidae) around South Georgia and Shag Rocks (Southern Ocean).

   of 440 mm TL and 520 mm TL. The diet was comprised of fish and crustaceans, with an ontogenetic shift ... Biol., 30 (12): 1523–1533 (2007)) Title:  Distribution and ecology of Chaenocephalus aceratus ... demersal fish living on the South Georgia shelf where it is caught in low numbers as by-catch in the ... estimates from a swept area method ranged from 4462 tonnes to 28740 tonnes on the South Georgia and Shag ...

   Meeting Document : WG-FSA-07/P5 : Auteur(s): W.D.K Reid, S. Clarke, M.A. Collins and M. Belchier. (Polar Biol., 30 (12): 1523–1533 (2007))

9. Age, growth and mortality of Patagonian toothfish (Dissostichus eleginoides) caught off Kerguelen

   estimated to be –0.6 years and residual variance 2.9. Age distributions of toothfish caught by two vessels ... otoliths from reference collections were used to measure precision; relative bias for the age data was ... depth or season. Age–length keys were constructed for use in assessing toothfish catches made by ... sexes were found, estimating von Bertalanffy parameters for males to be L ∞ = 95.9, K = 0.12, t 0 = –4.6 ... estimated for reader R2. 0 10 20 30 40 50 T ot al le ng th ( cm ) 0 20 40 60 80 100 120 140 ... ge ( ye ar s) 0 10 20 30 40 50 Reference age (years) 0 10 20 30 40 50 E st im at ed a ... Estimated age (years) 0 10 20 30 40 50 T ot al le ng th ( cm ) 0 20 40 60 80 100 120 140 (a ... for all reference otoliths. To do this, an ANOVA randomised complete blocks design was used ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 29–41 : Auteur(s): Ashford, J., G. Duhamel, C. Jones and S. Bobko

10. Features of chronology and breeding success of Pygoscelis papua and Pygoscelis adeliae penguins in the Wilhelm Archipelago (CCAMLR Subarea 48.1)

    Abstract:  We aim to investigate the qualitative changes in the habitats of two most common ... the penguin colonies for observation breeding success of penguins: arrival to colony, copulation, egg ... lay, hatch, and creche, has been applied. This method was introduced for the first time in the ... breeding success of penguins can be used as an indication of the status of lower trophic levels. Future ...

    Meeting Document : WG-EMM-18/P13 : Auteur(s): I.V. Dykyy, G.P. Milinevsky, O.L. Savitsky, D.G. Lutsenko, P.B. Khoetsky, M.F. Veselsky, V.M. Smagol, A.O. Dzhulay, J.V. Tsaryk, K.M. Nazaruk, A.T. Zatushevsky, A.O. Simon and M.A. Telipska

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