Search results
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Unusual breeding by seabirds at Marion Island during 1997/98
recorded, and more southern giant petrels M. giganteus did so than in any other year since 1994 ... . For southern giant petrels, reproductive success was higher than in any other year, as was survival of chicks ... of northern giant petrels. Conversely, for two seabirds that feed close to the island, gentoo penguin ... of Crozet shags that bred decreased; probably about 25% of the adult population did not breed. For two ...
Meeting Document : WG-EMM-03/13 : Author(s): R.J.M. Crawford, C.M. Duncombe Rae, D.C. Nel and J. Cooper (South Africa)
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ANTARCTIC FUR SEAL PUP PRODUCTION AND POPULATION TRENDS IN THE SOUTH SHETLAND ISLANDS WITH SPECIAL REFERENCE TO SOURCES OF ERROR IN PUP PRODUCTION ESTIMATES
to 30 days after the median date of pupping was estimated for the years 1997-2007 at 4.5% (±0.60). Adult ... to 30 days after the median date of pupping was estimated for the years 1997-2007 at 4.5% (±0.60 ... with previous censuses over a 20yr period (1987, 1992, 1994, and 1996) indicates the rate of increase in fur ... the water (~30d after the median date of pupping [MDP]). Leopard seal predation for the first 75d post MDP ...
Meeting Document : WG-EMM-PSW-08/14 : Author(s): M.E. Goebel (USA), D.E. Torres C. (Chile), A. Miller, J. Santora, D. Costa (USA) and P. Diaz (Chile)
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LENGTH-BASED ASSESSMENT FOR MACKEREL ICEFISH (CHAMPSOCEPHALUS GUNNARI) IN SUB-AREA 48.3
these numbers forward under the given harvest control rule to set a two‐year TAC. One issue is the accurate ... these numbers forward under the given harvest control rule to set a two‐year TAC. One issue is the accurate ... ) in sub‐area 48.3 employs the CMIX and GYM packages, which derives population numbers‐at‐age and projects ... identification of age cohorts from the survey data. In this paper we describe a length‐based approach ...
Meeting Document : WG-FSA-09/27 : Author(s): R.M. Hillary (Australia), C.T.T. Edwards, R.E. Mitchel and D.J. Agnew (United Kingdom)
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FISHING EQUIPMENT, MARINE DEBRIS AND HYDROCARBON SOILING ASSOCIATED WITH SEABIRDS AT BIRD ISLAND, SOUTH GEORGIA, 2007/2008
2008. It is the fifteenth such annual report. As in previous years, the majority of items (84 ... was observed in the total number of items encountered (n=116) compared with the previous season. Two non-fatal ... . It is the fifteenth such annual report. As in previous years, the majority of items (84%) of marine debris and fishing ... in the total number of items encountered (n=116) compared with the previous season. Two non-fatal entanglements ...
Meeting Document : WG-FSA-08/25 : Author(s): D. Fox (UK)
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Fishery Report: Dissostichus eleginoides Prince Edward Islands South African EEZ (Subareas 58.6 and 58.7)
by South Africa to fish in any one year. Since 2001/02, only two licensed vessels have been used ... by these operators in any one year, and only one vessel was active in 2005/06 (Table 2). Figure 1: General map ... 4. Stock assessment 4.1 Model structure and assumptions 11. A two-fleet age-structured production ... as for 2004 (WG-FSA-07/34 Rev. 1). Note that CCAMLR records indicated only one reported IUU vessel ...
Document : Site Section: Publications
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Entanglement of Antarctic fur seals (Arctocephalus gazella) in man made debris at Bird Island, South Georgia, during the 2006 winter and 2006/07 breeding season
of the sexed individuals in all age classes (43%) compared to males (33%) and the remainder unknown ... in winter and 53% in the summer. Overall females made up the majority of the sexed individuals in all age ... entanglements (41) and animals with severe wounding (20) was the highest recorded in 14 years, whilst the recent ... . The increase in the number of winter entanglements (41) and animals with severe wounding (20) was the highest ...
Meeting Document : SC-CAMLR-XXVI/BG/17 : Author(s): Delegation of the United Kingdom
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Report of the UK Groundfish Survey at South Georgia (CCAMLR Subarea 48.3) in January/February 2019
of the two northern strata and at the western end of Shag Rocks, with one high catch recorded in the South ... of the two northern strata and at the western end of Shag Rocks, with one high catch recorded in the South ... by fish of 18-26cm (TL) indicating the presence of a cohort of age 1+ fish. Estimated biomass ... by fish of 18-26cm (TL) indicating the presence of a cohort of age 1+ fish. Estimated biomass ...
Meeting Document : WG-FSA-2019/20 : Author(s): S. Gregory, P. Hollyman, T. Earl, A. Clement, J. Visagie, L. Featherstone and M. Belchier
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Shipboard line transect surveys of crabeater seal abundance in the pack-ice off East Antarctica: evaluation of assumptions
showed little movement in response to the approaching ship. Movement away from the ship by seals close ... movement in response to the approaching ship. Movement away from the ship by seals close to the ship’s ...
Meeting Document : WG-EMM-04/64 : Author(s): C. Southwell, W. de la Mare (Australia), D. Borchers and L. Burt (United Kingdom)
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Comparison of equal-area cylindrical and circular piston transducers
between cylindrical and circular piston transducers by comparing the performance of the two according ... loss. Under identical conditions of excitation, isotropic ambient noise, and detection threshold of 20 ... and circular piston transducers by comparing the performance of the two according to the principle ... loss. Under identical conditions of excitation, isotropic ambient noise, and detection threshold of 20 ...
Meeting Document : WG-EMM-95/08 : Author(s): Foote, K.G.
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Estimating the impact of depredation by killer whales and sperm whales on longline fishing for toothfish (Dissostichus eleginoides) around South Georgia
, normally between 1 and 4 animals and have a relatively lower impact on catches, depressing CPUE by up to 20 ... , normally between 1 and 4 animals and have a relatively lower impact on catches, depressing CPUE by up to 20 ... normally of 4 to 10 animals, and often appear to actively seek out fishing vessels and ‘strip’ the line ... %. Sperm whales have been more frequently encountered in recent years, occurring in larger pod sizes ...
Meeting Document : WG-FSA-10/P06 : Author(s): J. Moir Clark and D.J. Agnew