Search results
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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 : Author(s): Delegation of the United Kingdom
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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
the CCAMLR prohibition on their use in1994. The number ofanimals showing severe injuries was down on the 1998 ... on their use in1994. The number ofanimals showing severe injuries was down on the 1998 winter. The number ...
Meeting Document : SC-CAMLR-XIX/BG/02 : Author(s): Delegation of the United Kingdom
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Seabird mortality in the Japanese tuna longline fishery around Australia, 1988–1995
) 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 ... fishing effort occurs in winter; (b) when longlines are set during the day; (c) in the waters around ... southern Australia. Uncertainties in the observed catch rates prevent confident assessment of trends, but ...
Meeting Document : WG-FSA-98/31 : Author(s): N. Brothers, R. Gales and T. Reid (Australia)
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Revised proposal for a CCAMLR sponsored research survey to monitor abundance of pre-recruit Antarctic toothfish in the southern Ross Sea
from a well- designed survey in the Ross Sea could be a useful input into the stock assessment model ... survey was presented to the 2011 meeting of WG-SAM. In this paper we provide an update of the preliminary ... for the research proposal for a longline survey of pre-recruit toothfish in the southern Ross Sea ... location, the number of sets in each stratum required to achieve target c.v.s, and associated sampling ...
Meeting Document : WG-FSA-11/47 : Author(s): S.M. Hanchet, S. Mormede, S.J. Parker and A. Dunn (New Zealand)
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AERIAL SURVEYS OF WEDDELL SEALS DURING 2007-08, WITH NOTES ON THE HISTORY OF AERIAL CENSUSES IN THE ROSS SEA AND RECOMMENDATIONS FOR CONTINUED COUNT EFFORT
Antarctic toothfish (Dissostichus mawsoni), and currently there is no ecosystem monitoring program (CEMP) in ... place under CCAMLR with respect to the Ross Sea toothfish fishery. In a previous paper submitted to EMM ... in 2007 (WG-EMM 07/13), we described procedures whereby aerial photography could be used to monitor ... Weddell seals along the Victoria Land coast. That area would be important to monitor changes in ...
Meeting Document : WG-EMM-08/23 : Author(s): D. Siniff and D. Ainley (USA)
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Among-year variation in growth of Antarctic krill Euphausia superba based on length-frequency data
Abstract: Understanding the temporal variability in vital rates (e.g. growth and survivorship) of ... variation are rare because they often require expensive long-term tag-recapture programs. In marine pelagic ... Southern Ocean over a span of 19 yr to document among-year variation in krill growth during the austral ... estimates of among-year variation in krill growth. We estimate very high among-year variation in growth ...
Meeting Document : WG-EMM-13/P01 : Author(s): A.O. Shelton, D. Kinzey, C. Reiss, S. Munch, G. Watters and M. Mangel (USA)
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Modelling the predator–prey interactions of krill, baleen whales and seals in the Antarctic ecosystem
Abstract: The history of human harvests of seals, whales, fish and krill in the Antarctic is ... krill surplus in the mid 20th Century is described, and the information on population and trend levels ... ) species. The model commences in 1780 (the onset of fur seal harvests) and distinguishes the Atlantic ... /Indian and Pacific sectors in view of the much larger past harvests in former. A reference case and five ...
Meeting Document : WG-EMM-05/34 : Author(s): M. Mori and D.S. Butterworth (South Africa)
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PENGUIN RESPONSES TO CLIMATE CHANGE IN THE SOUTHERN OCEAN
Abstract: Penguins are adapted to live in extreme environments, but they can be highly sensitive ... , oceanography and critical habitats. For example, in the southwest Atlantic, the distributional range of the ice ... and chinstrap penguins have expanded their range southward. In the Southern Ocean, the El Niño ... changes in the marine ecosystem, ultimately affecting penguins. The interaction between these modes is ...
Meeting Document : WG-EMM-09/P09 : Author(s): J. Forcada and P.N. Trathan
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LENGTH AND AGE AT SPAWNING OF ANTARCTIC TOOTHFISH DISSOSTICHUS MAWSONI IN THE ROSS SEA
male Antarctic toothfish Dissostichus mawsoni from fish sampled in the Ross Sea spanning the 2000-2009 ... spawn in a given year and is therefore appropriate to evaluate spawning stock biomass relative to stock ... vitellogenic phase over at least a 6–12 month period, resulting in a developed batch of oocytes accumulating at ... ) by length. Evidence of skip spawning by females results in a right-shifted ogive, increasing the ...
Meeting Document : WG-FSA-09/37 : Author(s): S.J. Parker and P.J. Grimes (New Zealand)
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Relationship between distribution of Antarctic krill (Euphausia superba) and environmental index MTEM-200 in the Antarctic Ocean throughout the year
subject since the British Discovery Reports. However, there was no remarkable achievement in particular ... Database. We here focus mean-field (climatologic analysis) in all season. First, we have examined fishing ... occurred in water shallower than 200 m. Furthermore, horizontal distribution of krill fishing points ... concentrated in three waters in the east Antarctic Ocean, the Scotia Sea, and north of South Georgia Island ...
Meeting Document : WG-EMM-08/32 : Author(s): M. Naganobu, T. Kitamura and K. Hasunuma (Japan)