Résultats de la recherche

1. Summer survey of fur seals at Prince Edward Island, southern Indian Ocean

   11.4% per year from 2001. With an estimated 810 pups, the Antarctic fur seal is still in the rapid ... 9.3% per year between 1987/1988 and 2001/2002, and the population is in the mature phase of population ... intrinsic rate of natural increase has declined to –0.3% per year over the last seven years, compared to the ... gazella and Subantarctic fur seals A. tropicalis were determined at Prince Edward Island during 16–20 ...

   Meeting Document : WG-EMM-10/P15 : Auteur(s): M.N. Bester, P.G. Ryan and J. Visagie

2. Antarctic icefishes (Channichthyidae) – a unique family of fishes – a review

   Abstract:  Icefish are a family of species unique among vertebrates in that they possess no ... haemoglobin. With the exception of one species, icefish live only in the cold – stable and oxygen – rich ... environment of the Southern Ocean. It is still questionable how old icefish are in evolutionary terms: they ... they are 15 – 20 Ma old and started to evolve some time after the formation of the Antarctic ...

   Meeting Document : WG-FSA-04/10 : Auteur(s): K.-H. Kock (Germany)

3. Disentangling the influence of three major threats on the demography of an albatross community

   threats on the demography of seabird communities is vital for evidence-based conservation. Using 20 years ... ) at subantarctic Macquarie Island, we quantified the temporal variability in survival, breeding ... probability and success. In three species (excluding the wandering albatross because of the small population ... Southern Annular Mode (SAM) explained 22.9-40.9% and 22.2-33.4% of the temporal variability in survival and ...

   Meeting Document : WG-FSA-2019/34 : Auteur(s): J.B. Cleeland, D. Pardo, B. Raymond, G.N. Tuck, C.R. McMahon, R.A. Phillips, R. Alderman, M.-A. Lea and M.A. Hindell

4. Long-term observations from Antarctica demonstrate that mismatched scales of fisheries management and predator–prey interaction lead to erroneous conclusions about precaution

   hierarchical model and 30+ years of monitoring data, we show that expected penguin performance was reduced when ... are as precautionary as presumed. Antarctic krill are targeted by the largest fishery in the Southern ... local harvest rates of krill were ≥ 0.1, and this effect was similar in magnitude to that of poor ...

   Meeting Document : WG-EMM-2019/11 : Auteur(s): G.M. Watters, J.T. Hinke and C.S. Reiss

5. Evaluation on the performance of echosounder on a fishing vessel using maximum seabed backscattering

   and 2018) collected at a relatively fixed location with bottom depth around 200 m were used to ... , respectively. However, ANOVA analysis indicated that there was no significant difference among years at both ...

   Meeting Document : SG-ASAM-18/06 : Auteur(s): X. Wang, X. Yu and X. Zhao

6. Estimating the impact of depredation by killer whales and sperm whales on longline fishing for toothfish (Dissostichus eleginoides) around South Georgia

   , depressing CPUE by up to 20%. Sperm whales have been more frequently encountered in recent years, occurring ... , with killer whales present on 3.8% and sperm whales on 17.7% of lines. Killer whales appear in pod ... line of a large number of toothfish, usually depressing CPUE by about 50%. Sperm whales occur in ... in larger pod sizes, whereas killer whale encounters and pod sizes have remained relatively constant ...

   Meeting Document : WG-FSA-10/P06 : Auteur(s): J. Moir Clark and D.J. Agnew

7. Contribution to the early life history of Channichthyidae from the Bransfield Strait and South Georgia

   them that C. gunnari from the South Georgia region grow faster in the first two years of life than ... examined. Their postlarvae and juveniles were found numerously in krill catches in the Scotia Sea area ... patterns of microincrements, discernible in these otoliths under a light microscope, in most cases are ... , approximating in diameter otoliths of C. gunnari postlarvae. Ageing of single juveniles of Chaenodraco ...

   Meeting Document : CCAMLR/86/FA/08 : Auteur(s): W. Ślósarczyk (Poland)

8. Demography and population trends of the Atlantic yellow-nosed albatross

   two study colonies on Gough Island and Tristan da Cunha for 20 years. Annual variation in the number ... Tristan da Cunha archipelago and Gough Island in the central South Atlantic Ocean, and is threatened by ... mortality from longline fisheries operating in the South Atlantic. Demographic data have been collected from ... both study populations have trended downward at around 1.2% per year. The number of established ...

   Meeting Document : WG-FSA-03/37 : Auteur(s): R. Cuthbert (United Kingdom), P.G. Ryan, J. Cooper (South Africa) and G. Hilton (United Kingdom)

9. Marine debris and entanglements at Bird Island and King Edward Point, South Georgia, Signy Island, South Orkneys and Goudier Island, Antarctic Peninsula 2012/13

   lowest recorded in 23 years of summer surveys at Signy Island, possibly due to sea-ice coverage at the ... (operational during summer only; 25 November 2012 to 20 March 2013) recorded a total of 13 items of beached ... Point and zero at Signy Island and Goudier Island. In total, 85 items of marine debris were found in ... association with seabird colonies at Bird Island, most commonly in association with wandering albatrosses (45 ...

   Meeting Document : SC-CAMLR-XXXII/BG/05 : Auteur(s): Delegation of the United Kingdom

10. Exploratory analysis of acoustic data from the Ross Sea

    . Two types of pelagic layers were present in most acoustic recordings: a dense shallow layer between 30 ... conducting acoustic surveys for toothfish and rattails in the Ross Sea. Acoustic data were collected using a ... could be compared with longline catches. Each ‘line’ recording was between 20 and 50 min long ... January 2003, and the occurrence of a double bottom echo caused by too high a ping rate from 23–30 January ...

    Meeting Document : WG-FSA-SAM 03/9 : Auteur(s): R.L. O’Driscoll and G.J. Macaulay (New Zealand)

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