Resultados de la búsqueda
-
Ukrainian complex marine expeditions in the Southern Ocean
expeditions last conducted in 2001 were resumed aboard Ukrainian fishing vessel More Sodruzhestva which ... carries out regular fishing activities in the CAMLR Convention Area. The vessel equipped with modern ... measuring systems, and this is one of the most prominent examples of public-private partnership in Antarctic ... research. In particular, during the marine expedition, continuous monitoring of the physical and chemical ...
Meeting Document : WG-EMM-2019/62 : Autor(es): E. Dykyi, V. Komorin and A. Fedchuk
-
A preliminary assessment for mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2019 random stratified trawl survey
Abstract: The annual random stratified trawl survey was undertaken in Division 58.5.2 in the ... , abundance and yield in Division 58.5.2 to the west of 79 o 20’ E using standard CCAMLR methods (CMIX and ... Generalized Yield Model). The 2019 survey showed a large 2+ and 3+ cohort in the population. Catches of 527 t ... in the 2019/20 season and 406 t in the 2020/21 season, respectively, satisfied the CCAMLR decision ...
Meeting Document : WG-FSA-2019/02 : Autor(es): D. Maschette, G. Nowara and D. Welsford
-
Chinstrap penguins alter foraging and diving behaviour in response to krill size
Abstract: Penguins may exhibit plasticity in their diving and foraging behaviors in response to ... changes in prey availability. Chinstrap penguins are dependent predators of Antarctic krill in the Scotia ... Sea region. Both the sizes of krill found in penguin diets and acoustic estimates of krill biomass ... have fluctuated in recent years. We therefore examined the diet of chinstrap penguins at Livingston ...
Meeting Document : WG-EMM-07/11 : Autor(es): A.K. Miller and W.Z. Trivelpiece (USA)
-
Review of CCAMLR activities on monitoring marine debris in the Convention Area
on marine mammals and seabirds in the Convention Area has been reviewed. The CCAMLR Marine Debris ... debris, principally packaging items, fishing gear, and wood items, reached a peak in the period 1994-1996 ... at Bird Island and Signy Island, but have declined. The number of debris items found had increased in ... packaging materials and wood. The level of marine debris found in grey-headed albatross, black-browed ...
Meeting Document : SC-CAMLR-XXV/BG/09 : Autor(es): Secretariat
-
Quantifying within- and between-season variability in Adélie penguin fledgling weights: statistical and practical implications for detecting change
Béchervaise Island and use them in a power analysis as a continuation of the CEMP review. The statistical ... principles using raw data as recommended in Southwell et al. (2004). These models should be viewed as initial ... fledgling weights with a decline in resource availability, the consideration of total chick failure during ... severe food shortages and a possible change in variance associated with a change in the mean value. With ...
Meeting Document : WG-EMM-05/20 : Autor(es): L. Emmerson, C. Southwell and J. Clarke (Australia)
-
A study of Patagonian toothfish (Dissostichus eleginoides) post tagging survivorship in Subarea 48.3
were carried out on 8 different vessels fishing in 48.3. Toothfish were selected for tagging as normal ... , and then were kept in tanks with varying degrees of seawater replacement for at least 12 hours after ... animals were included in the final analysis, with an overall survivorship of 89%. There were significant ... differences between vessels, and smaller animals and animals in better initial condition had a slightly higher ...
Meeting Document : WG-FSA-05/19 : Autor(es): D. J. Agnew, J. Moir Clark, P.A. McCarthy, M. Unwin, M. Ward, L. Jones (United Kingdom), G. Breedt, S. Du Plessis, J. Van Heerdon (South Africa) and G. Moreno (Spain)
-
Detecting trends in the krill fishery
stocks is of limited value in plotting trends in the fishery at its current level. Predictions by Members ... found that they are generally less accurate than will be necessary to detect trends in the future ... . Economic information on the krill fishery has been difficult to access in the past but will be necessary to ... generally available in the Scientific Committee. Technological information may provide early warnings of ...
Meeting Document : WG-EMM-02/25 : Autor(es): S. Nicol and J. Foster (Australia)
-
Entanglement of Antarctic fur seals Arctocephalus gazella in man-made debris at Bird Island, South Georgia during the 2000 winter and the 2000/01 breeding season
entanglements over the 2000 winter than in 1999; some of which can be explained by interannual variation in the ... injuries accounted for 35% of entanglements over winter and 23% during the summer. As in previous years ... , most individuals observed entangled in debris were juveniles (80% of winter and 68% of summer ... entangled males in the winter compared to summer reflects the sex ratio of Antarctic fur seals ashore over ...
Meeting Document : SC-CAMLR-XX/BG/03 : Autor(es): Delegation of the United Kingdom
-
Interannual variability of polynya extent in the Antarctic Ocean
), coastal polynya and open ocean polynya, in the Southern Ocean. Polynya accelerates oceanic and atmospheric ... polynyas influence biological activity in the winter and spring season. However, there are no minute ... and converted into the yearly mean. The time series of the yearly mean in the whole Antarctic Ocean ... are trending like a pulse wave. In the whole Antarctic Ocean, peak years of polynyas extent are in the ...
Meeting Document : WG-EMM-01/34 : Autor(es): M. Naganobu and K. Segawa (Japan)
-
Entanglement of Antarctic fur seals Arctocephalus gazella in man made debris at Bird Island, South Georgia during the 1999 winter and the 1999/2000 pup rearing season
and a 94% decrease on the highest previous total (1992). Four of these animals wereentangled in ... plastic packaging bands, double that observed in the 1998 winter, and a return to thehigh levels observed ... on the 1998 winter. The number of seals observed entangled in the summer was the second lowest ... recorded to date,being 42% lower than in the 1998/99 season. The proportion of adult animals affected was ...
Meeting Document : SC-CAMLR-XIX/BG/02 : Autor(es): Delegation of the United Kingdom