Resultados de la búsqueda
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Analysis of the diet of Champsocephalus gunnari in Subarea 48.3, in late summer of years 1994–97, Dr E. Holmberg surveys
Abstract: The diet composition of mackerel icefish Champsocephalus gunnari caught in Subarea 48.3 ... ;Q" (%) methods. Krill (Euphausia superba) followed by the amphipod hyperiid Themisto ... gaudichaudii was the main food item around South Georgia and Shag Rocks in the period investigated, except in ... 1994, when the order of importance of these two organisms in the diet was inverted. The consumption of ...
Meeting Document : WG-FSA-97/48 : Autor(es): Barrera-Oro, E., Marschoff, E., Casaux, R.
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An underwater setting method for surface longliners, to minimise the accidental/incidental capture of seabirds
Abstract: The accidental/incidental capture of seabirds by longline gear may be causing a ... significant decline in the numbers of some species (most notably albatross Diomedea sp) in the Southern Oceans ... . In response to the sea bird problem, the New Zealand Department of Conservation funded a programme in ... are reported in this document. One with the tube opening facing forward was unsuccessful,in flushing ...
Meeting Document : WG-FSA-97/53 : Autor(es): Walshe, K.A.R., Parnes, P.
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Revised research plan for the exploratory longline fishery for Dissostichus spp. in 2012/13 Subarea 48.6 and Divisions 58.4.1, 58.4.2 and 58.4.3a (this is a revision of WG-SAM-12/09)
Abstract: The research fishing proposal for Dissostichus spp. in Subarea 48.6 and Divisions ... 58.4.1, 58.4.2 and 58.4.3a is resubmitted following paragraph 3.24 of WG-SAM-12. In the present proposal ... , we firstly showed information of catch, efforts, tagging experimental results based on the CCAMLR C2 ... data, and secondly showed the results of biological features with some discussion of life history in ...
Meeting Document : WG-FSA-12/60 Rev. 1 : Autor(es): Delegation of Japan
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Research plan for the 2016/17 exploratory longline fishery of Dissostichus spp. in Subarea 48.6 by South Africa and Japan
Abstract: South Africa and Japan made the next season’s (2016/17) research plan in Subarea 48.6 ... using the updated CCAMLR C2 and Observer data. We have firstly checked data quality and found some ... abnormal data for the two vessels in block 48.6_2, therefore we removed the data for the current analysis ... . We investigated the biological features of D. mawsoni using Observer data. The geographical ...
Meeting Document : WG-SAM-16/07 : Autor(es): Delegations of Japan and South Africa
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Long term movements and activity patterns of an Antarctic marine apex predator: the leopard seal
ecosystems through local predation. Here we report on the successful use of micro geolocation logging sensor ... tags to track the movements, and activity, of four leopard seals for trips of between 142-446 days ... including one individual in two separate years. Whilst the sample size is small the results represent an ... advance in our limited knowledge of leopard seals. We show the longest periods of tracking of leopard ...
Meeting Document : WG-EMM-18/P09 : Autor(es): I.J. Staniland, N. Ratcliffe, P.N. Trathan and J. Forcada
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Development of the Southern Ocean Continuous Plankton Recorder survey
Abstract: The Continuous Plankton Recorder (CPR) Type I was first used in Antarctic waters during ... the 1925–1927 Discovery Expedition, and has been used successfully for 70 years to monitor plankton in ... the North Sea and North Atlantic Ocean. Sixty-five years later the CPR as a Type II version returned ... to Antarctic waters when the Australian Antarctic Division initiated a survey of the Southern Ocean ...
Meeting Document : WS-BSO-07/P4 : Autor(es): Hosie, G., M. Fukuchi and S. Kawaguchi
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Population dynamics of the wandering albatross Diomedea exulans at Marion Island: long-line fishing and environmental influences
Abstract: The subantarctic Prince Edward Islands (Marion and Prince Edward) support the largest ... breeding population of the Vulnerable wandering albatross Diomedea exulans. The numbers of birds breeding ... in the Marion Island population has fluctuated over the past three decades and appears to be the ... result of both real changes in the size of the population and changes in the proportion of the population ...
Meeting Document : WG-EMM-03/11 : Autor(es): D.C. Nel, F. Taylor, P.G. Ryan and J. Cooper (South Africa)
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Documentation for the CCAMLR survey database and length-density analysis
Abstract: Over the past two years, the CCAMLR Data Centre has undertaken a major overhaul of the ... research survey database and the routines used for length-density analyses. This overhaul was necessary ... because of the increasing quantity and diversity of survey data and their importance in the assessments of ... . While appropriate in earlier years, this procedure constricted the type of survey data that could be ...
Meeting Document : WG-FSA-00/11 : Autor(es): Secretariat
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THE RISK TO FISHERY PERFORMANCE ASSOCIATED WITH SPATIALLY RESOLVED MANAGEMENT OF ANTARCTIC KRILL (EUPHAUSIA SUPERBA) HARVESTING
Abstract: The ecosystem approach to fisheries attempts to define objectives for the target ... species, the wider ecosystem and, critically, the fishery itself. Proposals for implementing this approach ... will affect fishery performance. One metric of potential performance is the probability of encountering ... exploitable densities of the target species at the scale of fishing operations. The probability of ...
Meeting Document : WG-EMM-09/P10 : Autor(es): S. Hill, P. Trathan and D. Agnew
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Abundance, size and maturity of krill (Euphausia superba) in the krill fishing ground of Subarea 48.1 during 1990/91 austral summer
Abstract: Acoustic and net sampling surveys for krill were conducted in the krill fishing area ... north of the South Shetland Islands from 18 January to 3 February 1991. Distinct offshore-inshore ... heterogeneities in abundance and maturity of krill were observed. The survey region was divided into four zones ... ; oceanic, slope frontal, neritic and nearshore zones. The mean density of krill was low in the oceanic zone ...
Meeting Document : WG-KRILL-92/26 : Autor(es): T. Ichii, H. Ishii and M. Naganobu (Japan)