Search results
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Variation in the diet of the blue-eyed shag Phalacrocorax atriceps throughout the breeding season at Half-Moon Island, South Shetland Islands
cormorant Phalacrocorax atriceps were collected in a colony at Half-moon Island, South Shetland Islands, by ... were the main prey (91% in number) followed by mollusks and polychaetes. Six fish species were ... important in mass (79%), followed by N. nudifrons and T. newnesi. The overall composition of the diet was ... species and non- fish organisms. This may reflect different degrees of energy demand by chicks at ...
Meeting Document : WG-EMM-95/78 : Author(s): Barrera-Oro, E., Casaux, R.
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Factors that may influence the accuracy of abundance estimates from CCAMLR tag-recapture programs for Dissostichus spp. and best practice for addressing bias
and released through blood loss, infection and lice attack. A study by Agnew et al. (2006a) found ... . United States Dept. of Agriculture Circular, 118: 1–4. Marlow, T.R., D.J. Agnew, M.G. Purves ... spatial structure of release and recapture efforts by fishing and research vessels, development of ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 63–72 : Author(s): Welsford, D.C. and P.E. Ziegler
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SELECTIVITY OF CONVENTIONAL AND CONTINUOUS TECHNIQUES OF KRILL FISHERY
be connect with the trawls selectivity weren’t found. At the same time results of the analysis didn’t ... selectivity weren’t found. At the same time results of the analysis didn’t indicate ...
Meeting Document : WG-EMM-11/14 : Author(s): D. Sologub (Russia)
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History
for their oil. Whaling in this area began in 1904 and all seven species of whales found in the Southern Ocean ... of whales found in the Southern Ocean were extensively exploited. Antarctic finfish, crabs, squid and krill ...
Page : Site Section: The Organisation
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Long-term monitoring of krill recruitment and abundance indices in the Elephant Island area (Antarctic Peninsula)
countercurrents flow from east to west in nearshore waters. The spawning stock is found north ... and Harm, 1996). A different juvenile size category is found regularly to the south and southeast ... "S, approximately from the tip of the Peninsula to the east; often they are found over the northern shelf ... were re-calculated applying the delta distribution approach introduced by de la Mare (1994a). The high ... interannual variability of krill recruitment is confirmed by the present analysis. Results are compared for ... krill density over the period 1977 to 1994 are also confirmed by this study using randomisation tests on ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 19–35 : Author(s): Siegel, V., W. de la Mare and V. Loeb
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Deployment of research hauls in the exploratory fisheries for Dissostichus spp. in Subareas 48.6 and 58.4 in 2010/11
hauls in order to facilitate research fishing by seven vessels which had notified their intention to ... advice of the Scientific Committee, and using information held by the CCAMLR Data Centre. Vessels were ... were provided by the Secretariat, on request from the notifying Member or its vessel, and prior to the ... prior to fishing. In general, vessels were able to deploy their research hauls by at least 5 nmiles ...
Meeting Document : WG-SAM-11/04 : Author(s): Secretariat
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LENGTH AND AGE AT SPAWNING OF ANTARCTIC TOOTHFISH DISSOSTICHUS MAWSONI IN THE ROSS SEA
the final maturation stage by May. Oogenesis is characterised to provide the biological basis for ... slope region is estimated to be 16.6 yr (range 16.0–17.3) or 133.2 cm (range 130.9–135.7) by length ... ) by length. Evidence of skip spawning by females results in a right-shifted ogive, increasing the ... ogive is biased right (older) by excluding the mature fish in the north depends on the proportion of the ...
Meeting Document : WG-FSA-09/37 : Author(s): S.J. Parker and P.J. Grimes (New Zealand)
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Recent population estimates and trends in numbers of albatrosses and giant petrels breeding at the sub-Antarctic Prince Edward Islands
have remained stable, whereas the population on Prince Edward Island decreased by 20% from 2001 to 2008 ... sooty albatrosses P. fusca on Marion Island have decreased by almost 2% per year since 1996, continuing ... increased by almost 6% per year at Marion Island since 1996. Counts of both giant petrels increased at ... Prince Edward Island (northern Macronectes halli by 44%; southern M. giganteus by 28%), whereas their ...
Meeting Document : WG-EMM-10/P04 : Author(s): P.G. Ryan, M.G.W. Jones, B.M. Dyer, L. Upfold and R.J.M. Crawford
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An updated descriptive analysis of the toothfish (Dissostichus spp.) tagging program in Subareas 88.1 and 88.2 for 2006/07
2007 meeting of WG-SAM by including revised data and data from non-New Zealand vessels that fished in ... the Ross Sea in 2007 by New Zealand vessels was the highest annual recapture to date and double the ... were observed from toothfish tagged by fishing vessels. Six fish moved 400–600 km from the slope ... differences is unclear, but may related to different survival rates of fish tagged by different vessels ...
Meeting Document : WG-FSA-07/40 : Author(s): A. Dunn, S.M. Hanchet and S.L. Ballara (New Zealand)
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Proposal for the removal of night setting requirement for autoline vessels fishing in Division 58.5.2
Abstract: This document seeks support to allow line setting operations by autoline vessels ... introduction of longline fishing in 58.5.2 in 2002 seabird by-catch mitigation requirements have exceeded those ... required by CCAMLR. Evidence from sub Area 48.3 (South Georgia), where both the hooking effort and number ... winter fishing with appropriate mitigation presents very low risk to seabirds. This is supported by the ...
Meeting Document : WG-FSA-04/73 : Author(s): G. Robertson and B. Baker (Australia)