Résultats de la recherche
-
Warp strike observations
Abstract: This report contains an analysis of data on seabird trawl-warp strike collected by ... summer of 2004 – 2005. The aim of the work was to test a new protocol for quantifying warp-strikes and to ... probability of warp strikes occurring for small and large birds. The protocol was designed for use by non ... -specialist observers, to provide a robust and objective assessment of warp strike occurrence. The key results ...
Meeting Document : WG-FSA-05/40 : Auteur(s): E. Abraham (New Zealand)
-
Beach debris survey, Signy Island, South Orkney Islands 2000/2001
size categories. A total of 16 items weighing 0.74kg was collected. The number of items and the total ... mass of the waste recovered was the lowest ever recorded (a decrease of 70% and 93% since 1999/2000 ... respectively). The number of plastic packaging bands (one) was also the lowest ever recorded and follows a ... seasons, with the proportion of plastic items (56%) being the third highest reported since surveys began ...
Meeting Document : SC-CAMLR-XX/BG/05 : Auteur(s): Delegation of the United Kingdom
-
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 ... density with hypothesized environmental factors, including strength of westerly winds (westerlies ... and the strength of westerlies during 1982–1998. Years with strong westerlies during the austral ...
Meeting Document : WG-EMM-99/52 : Auteur(s): M. Naganobu, K. Kutsuwada, Y. Sasai and T. Taguchi (Japan) and V. Siegel (Germany)
-
Seabird mortality in the Japanese tuna longline fishery around Australia, 1988–1995
Abstract: Large numbers of seabirds are killed each year within the Australian Fishing Zone (AFZ ... ) by Japanese longline vessels targeting tuna. In recent years the estimated rate of seabird bycatch in ... the AFZ has been in the order of 0.15 birds 1000 hooks, translating to mortalities of 1000-3500 birds ... southern Australia. Uncertainties in the observed catch rates prevent confident assessment of trends, but ...
Meeting Document : WG-FSA-98/31 : Auteur(s): N. Brothers, R. Gales and T. Reid (Australia)
-
CLIMATICALLY DRIVEN FLUCTUATIONS IN SOUTHERN OCEAN ECOSYSTEMS
of how biological and physical processes interact across a wide range of scales. Here we examine the ... 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 ... the South Pacific sector of the Southern Ocean have previously been shown to be generated through ...
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
-
Linking predator and prey behaviour: contrasts between Antarctic fur seals and macaroni penguins at South Georgia
combination of concurrent at sea (predator observations, net hauls and multi-frequency acoustics), and land ... -based (animal tracking and diet analysis) techniques, we examined variability in the foraging ecology of ... these sympatric top predators during the austral summer and autumn of 2004. Krill availability derived ... occurred in 80% of fur seal diet samples, with fish remains in 37% of samples. Penguin diets contained the ...
Meeting Document : WG-EMM-10/P07 : Auteur(s): C.M. Waluda, M.A. Collins, A.D. Black, I.J. Staniland and P.N. Trathan
-
Krill population dynamics at South Georgia: implications for ecosystem-based fisheries management
Abstract: The South Georgia region supports a large biomass of krill that is subject to high ... interannual variability. The apparent lack of a locally self-maintaining krill population at South Georgia ... to successful ecosystem-based management of krill fishery in the region. Krill acoustic-density data ... from surveys conducted in the early, middle and late period of the summers of 2001 to 2005, together ...
Meeting Document : WG-EMM-10/P08 : Auteur(s): K. Reid, J.L. Watkins, E.J. Murphy, P.N. Trathan, S. Fielding and P. Enderlein
-
Débris marins
standardised set of forms and instructions covering marine debris from beach surveys, debris associated with ... seabird colonies, entanglements of marine mammals, and hydrocarbon soiling of mammals and seabirds. The ... on Sub-Antarctic islands. Protection of the Antarctic marine environment is a matter of concern to ... CCAMLR as the general health of the environment affects the species covered by the Convention. In ...
Page : Site Section: Science
-
A preliminary stock assessment in SSRUS 486A, G: A Bayesian and CPUE based biomass dynamic model
contribution to estimate abundance in a simple biomass dynamic model for both species of toothfish in northern ... area of 48.6 (SSRU 48.6A, 48.6G). Antarctic and Patagonian toothfish presented a high proportion with ... sets in which both species are present, and thus, an analysis of catch intention was implemented by ... using multivariate statistical approach of the catch composition. Standardisation of CPUE was done by ...
Meeting Document : WG-SAM-13/29 : Auteur(s): R. Wiff, J.C. Quiroz (Chile) and R. Scott (United Kingdom)
-
Le prix du poisson : Étude de marché mondiale de la légine australe (Dissostichus eleginoides) et antarctique (Dissostichus mawsoni)
Abstract: Patagonian and Antarctic toothfish are traded internationally and considered to be of ... , are managed by the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR ... ), there are currently no methods in place to monitor the volume or value of toothfish traded in the ... analysis of import and export data records from 2007 to 2012 was conducted. The objective was to examine ...
Meeting Document : CCAMLR-XXXIII/BG/14 Rev. 2 : Auteur(s): Secretariat