Résultats de la recherche

1. Distribution and relative abundance of Antarctic toothfish (Dissostichus mawsoni) on the Ross Sea shelf

   been taken mainly in depths greater than 800 m from three localised fishing grounds of deep water off ... Terra Nova Bay, Ross Island, and in the south of small-scale research unit (SSRU) 881L (adjacent to the ... in the southern Ross Sea were sub-adult and maturing fish, typically ranging from 60–130 cm in length ... available, there is no evidence for a northward contraction in the range of D. mawsoni over the course of ... the fish caught in the south of SSRUs 882A and 882B on the eastern Ross Sea shelf was also plotted ... word ‘season’ refers to the period from December to May, the months of fish- ing in the middle of the ... taken mainly in depths greater than 800 m from three localised fishing grounds of deep water off Terra ... Nova Bay, Ross Island, and in the south of small-scale research unit (SSRU) 881L (adjacent to the Ross ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 33–51 : Auteur(s): Hanchet, S.M., S. Mormede and A. Dunn

2. The foraging range of Adélie penguins – implications for CEMP and interactions with the krill fishery

   coast of eastern Antarctica between 55 o E (Enderby Land) and 175 o E (Ross Sea). Adélie penguins ... , and in Figure 3a-c for Casey, Dumont seasons at seven sites along the coast of eastern d 'urvil le ... is currently very little krill fishing in eastern Antarctica, a spatial overlap does occur between ... These data suggest that Adelie penguins in eastern Antarctica regularly forage within a range of up to ... suggested that new CEMP sites in eastern Antarctica would be best established where concentrations of E ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 75–87 : Auteur(s): Kerry, K.R., J.R. Clarke, S. Eberhard, H. Gardner, R.M. Lawless, S. Corsolini, S. Focardi, E. Franchi, D. Rodary and R. Thomson

3. Sensitivity analysis for parameters of predatory species CCAMLR Ecosystem Monitoring Program

   such a treatment of data obtained at the Magnetic Island Adélie penguin colony in Prydz Bay in the 1987 ... Magnetic Island Adelie penguin colony in Prydz Bay in the 1987/88 and 1988/89 breeding seasons. The data ... populations are sensitive to conditions within their foraging ranges (e.g. BIOMASS, 1982). This interest in ... the use of vertebrate predators in environmental monitoring continued in discussions of the ... (SC-CAMLR). In 1988 this culminated in the publication by the Working Group for the CCAMLR Ecosystem ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 411–432 : Auteur(s): Whitehead, M.D.

4. The biology, ecology and development of fishery management advice for the anomuran crabs at South Georgia (CCAMLR Subarea 48.3)

   of the development of a management regime for them. Finally it aims to highlight areas in which ... further research should be directed in order to provide information on which to base the most appropriate ... assessment and management methods in light of continuing interest in the regional crab fishery. Considerable ... gaps in our knowledge of the biology, ecology and demography of the lithodid species at South Georgia ... ). Size limits In the 1991/92 season data from an initial 22-day trip of the US vessel FV Pro Surveyor ... distributed globally in the deep sea, with a few genera occurring inter-tidally at high latitudes in the ... water habitats and tempera- ture is thought to be a constraining factor in their distribution. Lower ... (Thatje and Arntz, 2003; Hall and Thatje, 2011). Lithodids support important fisheries in higher ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 1–15 : Auteur(s): Belchier, M., T. Peatman and J. Brown

5. Comparison of two methods to assess fish losses due to depredation by killer whales and sperm whales on demersal longlines

   depredation occurs on fish in the marine environment. This is the case for killer whales (Orcinus orca) and ... to 2013), accounting for spatial variations of depredation levels. In the first method, fishing data ... second method used the differences in the proportion of grenadiers (Macrourus spp.) between non ... the highest among all similar situations where depredation is reported elsewhere in the world. In ... = å (4) where ( ) , ,j k lloss uB C the total fish biomass lost to depredation in all cells cu ... ( ), ,j k lloss gN c is the number of Patagonian toothfish lost in the cell cg, igN is the total number ... especially challenging when depredation occurs on fish in the marine environment. This is the case for ... . In the first method, fishing data from 6 525 longline sets were used to calculate the difference ...

   Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 1–14 : Auteur(s): Gasco, N., P. Tixier, G. Duhamel and C. Guinet

6. Size at sexual maturity of Patagonian toothfish (Dissostichus eleginoides)

   (Dissostichus eleginoides) caught in the commercial fishery within Subarea 48.3. The results for 1996 indicate ... that L m50 occurs at 78.5 cm total length for male and 98.2 cm for female fish. In 1997 the results for ... male fish were essentially the same. For female fish there is evidence that in 1997 a significant ... allowing for this bias indicates that L m50 for female fish in 1997 was no different to that for 1996. The ... data in the middle of the curve for the July period. The results from the PROBITANALYSIS procedure ... sexual maturity were undertaken on samples of Patagonian toothfish (Dissostichus eleginoides) caught in ... total length for male and 98.2 cm for female fish. In 1997 the results for male fish were essentially ... the same. For female fish there is evidence that in 1997 a significant proportion, 25 to 43%, of ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 37–46 : Auteur(s): Everson, I. and A.W. Murray

7. Preliminary study on nesting Adélie penguins disturbance by unmanned aerial vehicles

   Abstract / Description:  The importance of unmanned aerial vehicles (UAVs) in remote sensing is rapidly ... growing. However, knowledge about their potential impact on wildlife is scant, especially in Antarctica ... , where they are a new tool used in ecological research and monitoring. In this preliminary study ... potential effects of wildlife disturbance by fixed-wing UAVs are investigated. In austral summer 2014/15 ... hexacopter hovering at an altitude of 30 m was lost in the background (Goebel et al., 2015). Pomeroy et al ... The importance of unmanned aerial vehicles (UAVs) in remote sensing is rapidly growing. However ... , knowledge about their potential impact on wildlife is scant, especially in Antarctica, where they are a new ... tool used in ecological research and monitoring. In this preliminary study potential effects of ...

   Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 1–16 : Auteur(s): Korczak-Abshire, M., A. Kidawa, A. Zmarz, R. Storvold, S.R. Karlsen, M. Rodzewicz, K. Chwedorzewska and A. Znój

8. An alternative method for estimating the level of illegal fishing using simulated scaling methods on detected effort

   performs better in the case of zero detections and can potentially better handle the evasion of detection ... method used directly affects the system. This is the prevention/detection problem, in which the greater ... fishing (in the simulation datasets) for a given estimated level of fishing is very large. This range of ... zero illegal fi shing. The new method performs better in the case of zero detections and can ... prevention/detection problem, in which the greater the number of detections for a given level of illegal fi ... degree of legitimacy. However, the range of actual fi shing (in the simulation datasets) for a given ... is used throughout this document. In the simplest case one would like to determine how to scale the ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 143–161 : Auteur(s): Ball, I

9. Mesopelagic fish of the Southern Ocean - summary results of recent Soviet studies

   these species are summarized in tables with details on area, season and source of data. Some data, e.g ... . length composition of samples, are also illustrated in figures. The importance of studies on the role of ... myctophids in the Antarctic ecosystem is highlighted. File:  26-Sabourenkov.pdf ... species. Some details of the biological characteristics of these species are summarized in tables with ... illustrated in figures. The importance of studies on the role of myctophids in the Antarctic ecosystem is ... nearly absent in Antarctic waters. Pelagic fish fauna of this area consists primarily of meso- and bathy ... 1 500 m in depth. Of these three families, species of the family Myctophidae are the most widely ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 433–457 : Auteur(s): Sabourenkov, E.N.

10. Biogeographic patterns of benthic invertebrate megafauna on shelf areas within the Southern Ocean Atlantic sector

    the Weddell water masses that meet and mix in this region. Evident at smaller spatial scales are the ... as eastern and southeastern shelf areas of Elephant Island, are considerably higher in total ... eastern coast of the Antarctic Peninsula also flows west to east in a clockwise direction. Thus ... meet and mix in this region. Evident at smaller spatial scales are the effects of disturbance regimes ... thwarted by sparse records. Even where advances in both have been so great as to allow the delineation of ...

    Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 167–192 : Auteur(s): Lockhart, S.J. and C.D. Jones

Pages