Resultados de la búsqueda
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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/P4 : Autor(es): P.G. Ryan, M.G.W. Jones, B.M. Dyer, L. Upfold and R.J.M. Crawford
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The effects of global climate variability in pup production of Antarctic fur seals
-induced changes in the abundance of species in lower trophic levels can cascade up to apex predators by ... autocorrelation created by global climate perturbations; these were identified in time series of monthly averaged ... . SST anomalies were preceded by, and cross-correlated with, frequent El Niño-La Niña events between ... breeding cycle. Reductions in Antarctic fur seal pup production could thus be predicted in advance by the ...
Meeting Document : WG-EMM-06/P2 : Autor(es): J. Forcada, P.N. Trathan, K. Reid and E.J. Murphy (United Kingdom)
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Demonstrating global leadership in marine spatial protection
system of marine protected areas (MPAs) and Marine Reserves by 2012.1 The recent Workshop on Marine ... do so. The key principles and concepts are straightforward, and supported by excellent, science-based ... papers put forward by various Members and NGOs to help create the initial system of MPAs and Marine ... implementation of MPAs and Marine Reserves. In addition, ASOC contributed by bringing forward concrete scientific ...
Meeting Document : CCAMLR-XXX/BG/20 : Autor(es): Submitted by ASOC
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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 : Autor(es): S.J. Parker and P.J. Grimes (New Zealand)
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The Role of Fish as Predators of Krill (Euphausia superba) and Other Pelagic Resources in the Southern Ocean
consumption by Antarctic demersal fish. These estimates were extended to the mesopelagic realm and the high ... number of food studies were conducted. Currently, the best estimates of krill consumption by fish are 23 ... – 29. 106 tonnes of krill and other pelagic prey taken annually by demersal fish and 7 – 44. 106 tonnes ... taken by mesopelagic fish in the Atlantic Ocean sector only. However, these estimates still have wide ...
Meeting Document : CCAMLR-IWC-WS-08/09 : Autor(es): Collins, M.A., Williams, R., Agnew, D.J., Kock, K.-H., Belchier, M., Shust, K.V., Welsford, D., Hanchet, S., Pshenichnov, L., Barrera-Oro, E.
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Escapement of elephant seal prey in the Heard Island fishery for Dissostichus eleginoides
preyed on by these seals. This paper provides an updated analysis of the age of toothfish taken by ... examine the level of escapement of fish preyed on by these seals under the current Total Allowable Catch ... 2-6 years are likely to be vulnerable, to some extent, to predation by Elephant seals. The ... the 75% level adopted by CCAMLR for other prey species such as for krill, Euphausia superba, generally ...
Meeting Document : WG-EMM-97/42 : Autor(es): Slip, D., Constable, A.J., de la Mare, W.K., Williams, R.
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Exploratory longline fishing around the Kerguelen Islands (Division 58.5.1). Description of the fishing effort; catchability and target size of Dissostichus eleginoides
fishing carried out by one of these longliners has allowed a description of fishing methods to be made ... by trawlers. The vessel is equipped with an automatic longline baiter which has an efficiency of ... about 75%. The catch rate has been assessed as being about 10.9%, but this average is reduced by the ... the order of 10.2%. The catch is almost exclusively made up of Dissostichus eleginiodes, by-catches ...
Meeting Document : WG-FSA-92/31 Rev. 1 : Autor(es): G. Duhamel (France)
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Report to CCAMLR-XXIX on the implementation of the Agreement on the Conservation of Albatrosses and Petrels
and CCAMLR, such as information on the conservation status and threats faced by ACAP species found in ... Abstract: ABSTRACT This paper reports on progress made by the Agreement on the Conservation of ... ;- setting at night; and- actively deterring birds from baited hooks by means of bird scaring lines, in ... , endorsed at CCAMLR XXVIII, has been approved by ACAP Parties. The signing of the MoU by the respective ...
Meeting Document : CCAMLR-XXIX/BG/18 : Autor(es): ACAP Secretariat
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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 : Autor(es): P.G. Ryan, M.G.W. Jones, B.M. Dyer, L. Upfold and R.J.M. Crawford
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The use of electronic monitoring camera system for the toothfish fishery in CCAMLR Subarea 48.3: a study case to help CCAMLR
fishery around CCAMLR Subarea 48.3 have, to date, been limited to in situ line observations conducted by ... coverage of all setting and hauling activities on this vessel. It proved to be reliable, easy to set up by ... by a scientific observer was compared with recorded video footage recorded by 3 different video ... vertebrate counted in situ and in the video footage by the different video reviewers (observers). However ...
Meeting Document : WG-FSA-14/27 : Autor(es): R.A. Benedet (United Kingdom)