Результаты поиска

1. COLLAPSE OF SOUTH AFRICA’S PENGUINS IN THE EARLY 21ST CENTURY

   Algoa Bay (Eastern Cape), their breeding localities in these regions being separated by c. 600 km. Their ... period. In both the Western and Eastern Cape provinces, long-term trends in numbers of penguins breeding ... Abstract:  The number of African penguins Spheniscus demersus breeding in South Africa collapsed ... from about 56 000 pairs in 2001 to some 21 000 pairs in 2009, a loss of 35 000 pairs (>60%) in eight ...

   Meeting Document : WG-EMM-11/P8 : Автор(ы): R.J.M. Crawford, R. Altwegg, B.J. Barham, P.J. Barham, J.M. Durant, B.M. Dyer, D. Geldenhuys, A.B. Makhado, L. Pichegru, P.G. Ryan, L.G. Underhill, L. Upfold, J. Visagie, L.J. Waller and P.A. Whittington

2. Variation in the distribution of Antarctic krill Euphausia superba around South Georgia

   Abstract:  Between 1980 and 1997 British Antarctic Survey carried out 11 cruises in the region of ... cruises and look particularly at differences between krill taken from the eastern and western ends of the ... ). The PCA for all cruises combined showed that there were no obvious differences in the type of krill ... found in different water depths, although there were some indications that differences did occur between ...

   Meeting Document : WG-EMM-97/47 : Автор(ы): Daly, H.I., Murray, A.W.A., Watkins, J.L.

3. Longline sink rates on a bottom autoline vessel in New Zealand: draft

   the middle of an unweighted longline of this design sinks to 10m in a mean time of 63.0 seconds (n ... vessel F.V. San Aotea in New Zealand. The objective of the project was to determine line sink rate, and ... as would be used in normal fishing operations to test the effectiveness of weighting the longline as ... ):  N.W. McL. Smith (New Zealand) Title:  Longline sink rates on a bottom autoline vessel in New Zealand ...

   Meeting Document : WG-FSA-98/51 : Автор(ы): N.W. McL. Smith (New Zealand)

4. Report on fish by-catch on exploratory fishing in Divisions 58.4.1 and 58.4.2

   everywhere. The ratio by-catch to target catch was higher in the eastern part of Division 58.4.1. The ratio ... eastern blocks where Macrourus CPUE also increased in the last 3 years. Macrourus CPUE was 23kg/1000 hooks ... Abstract:  In this paper, we report on fish by-catch during exploratory fishing activities ... undertaken in Divisions 58.4.1 and 58.4.2 during the 2012 to 2018 seasons. Fish by-catch comprised 14 species ...

   Meeting Document : WG-FSA-18/28 : Автор(ы): C. Péron, P. Yates, D. Maschette, C. Chazeau, P. Ziegler, D. Welsford, N. Gasco and G. Duhamel

5. Age, growth and size at sexual maturity of Macrourus carinatus caught as by-catch in Australian sub-Antarctic trawl fisheries

   Paper Title:  Age, growth and size at sexual maturity of Macrourus carinatus caught as by-catch in ... McDonald Islands (Division 58.5.2) in 1992 and 1993. The range of estimated ages was 4 to 25 years. There ... were no significant differences in growth parameters calculated for males and females. Von Bertalanffy ... operations in the Heard Island region in 2000. The length at first maturity (L 50) was 418 mm (total length ... /February 1992 and September 1993, and a commercial trawl fi shing trip to Heard and McDonald Islands in ... commercial trawl fi shing trip to Heard and McDonald Islands in September/October 2000. The fi sh were ... BY-CATCH IN AUSTRALIAN SUB-ANTARCTIC TRAWL FISHERIES E.M. van Wijk , R. Williams and A.J ... otolith samples collected during two research voyages to Heard and McDonald Islands (Division 58.5.2) in ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 139–151 : Автор(ы): van Wijk, E.M., R. Williams and A.J. Constable

6. Validating the Gasco-method for depredation estimation in Subarea 48.3

   model estimation of the lost catch. A new method was developed in 2014 that used an observed change in ... method performed similarly to the established method both in estimating total losses, and identifying ... estimation in Subarea 48.3 Approval:  Approved Secretariat Workflow Status:  Content Approved Delegation ...

   Meeting Document : WG-SAM-16/32 : Автор(ы): M. Söffker and T. Earl

7. Adélie penguin population change in the pacific sector of Antarctica: relation to sea-ice extent and the Antarctic Circumpolar Current

   strong correlations to ice conditions in the eastern portion of the study area (174 to 130°W), and ... evidence that the Ross Island penguins winter in the eastern Ross Sea/western Amundsen Sea. A demographic ... Abstract:  One of the longest continuing data sets involving a marine organism in the Antarctic is ... environmental factors; and used path analysis to analyze annual variation in population growth in relation to ...

   Meeting Document : WG-EMM-01/23 : Автор(ы): P.R. Wilson (New Zealand), D.G. Ainley, N. Nur, S.S. Jacobs (USA), K.J. Barton (New Zealand), G. Ballard and J.C. Comiso (USA)

8. Distribution and relative abundance of juvenile icefish (Champsocephalus gunnari) from a trawl survey of the South Georgia shelf in June–July 1985

   ) from a trawl survey of the South Georgia shelf in June–July 1985 Abstract / Description:  A trawl ... survey of the distribution and relative abundance of juvenile icefish (Champsocephalus gunnari) in South ... Georgia waters was carried out in June–July 1985. Shelf and slope areas extending from the 12 nautical ... highest in the west, south and south-east shelf areas and the greatest abundance was found in shallow ... station in a depth of 245-270 m, where the juvenile distribution was determined in the upper, middle ... . Juvenile mackerel icefish rarely occurred in the middle and surface layers during the 24-hour period ... ABUNDANCE OF JUVENILE ICEFISH (CHAMPSOCEPHALUS GUNNARI) FROM A TRAWL SURVEY OF THE SOUTH GEORGIA SHELF IN ... the distribution and relative abundance of juvenile icefish (Chamsocephalus gunnari) in South ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 55-63 : Автор(ы): Boronin, V.A., G.P. Zakharov and V.P. Shopov

9. Descriptive analysis of mesopelagic backscatter from acoustic data collected in the Ross Sea

   estimate middle trophic level prey organisms (e.g., krill and mesopelagic fish) in the Ross Sea. Single ... frequency (38 kHz) acoustic data were available from New Zealand longline vessels participating in the ... exploratory fishery for toothfish in 2002–03 and 2005–06, and multifrequency (12, 38, and 120 kHz) acoustic ... data were collected from the research vessel Tangaroa during a voyage to the western Ross Sea in ...

   Meeting Document : WG-EMM-06/11 : Автор(ы): R.L. O’Driscoll (New Zealand)

10. The relationship between foraging behaviour and energy expenditure in Antarctic fur seals

    expenditure was investigated in nine Antarctic fur seal females rearing pups. At-sea metablic rate (MR) (mean ... of 6.34 ± 0.4 W • kg–1; 4.6 times predicted BMR) was positively correlated to foraging trip duration ... :  The relationship between foraging behaviour and energy expenditure in Antarctic fur seals Approval ...

    Meeting Document : WG-EMM-96/07 : Автор(ы): Boyd, I.L., Arnould, J.P.Y., Speakman, J.R.

Страницы