Search results
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Physical forcing in the southwest Atlantic: ecosystem control
Abstract: In the southwest Atlantic sector of the Southern Ocean, temporal variability in the ... physical environment has been recorded since the early part of the last century. For example, ocean ... temperatures are known to vary both between seasons and between years. Time series analysis of sea surface ... temperature at South Georgia shows the presence of high levels of autocorrelation, with periodicity evident in ...
Meeting Document : WG-EMM-04/34 : Author(s): P.N. Trathan, E.J. Murphy, J. Forcada, J.P. Croxall, K. Reid and S.E. Thorpe (United Kingdom)
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Trends in mean lengths and selectivities for Dissostichus eleginoides taken by longliners in Subarea 48.3
Abstract: At its last meeting, WG-FSA noted a declining trend in the mean lengths of toothfish ... of fish taken on individual longline sets from which length frequencies were sampled by observers and ... also that this trend was halted in 2000. A GLM analysis of these data shows that both area and depth ... are highly significant factors in explaining part of this variation over time, but not all of it ...
Meeting Document : WG-FSA-01/48 : Author(s): G.P. Kirkwood and D.J. Agnew (United Kingdom)
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Demonstrating global leadership in marine spatial protection
as they convene for their 30th annual meeting. One of the most important is fulfilling their ... commitment to meet the World Summit on Sustainable Development (WSSD) goal of designating a representative ... system of marine protected areas (MPAs) and Marine Reserves by 2012.1 The recent Workshop on Marine ... done in a short time. Fortunately, as the report of the workshop recognizes, experience demonstrates ...
Meeting Document : CCAMLR-XXX/BG/20 : Author(s): Submitted by ASOC
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Proposal for an extension to the mark recapture experiment to estimate toothfish population size in Subarea 48.4
Abstract: 1. So far a total of 929 D. eleginoides have been tagged and released at Subarea 48.4 ... assessment of D. eleginoides stock size in the Northern Area of 48.4 estimates a vulnerable biomass of ... 48.4 in the 2008/09 fishing season so as to allow for a full assessment of D. eleginoides stock size in ... southern area of Subarea 48.4. This has the aims of providing the data required for assessments of the ...
Meeting Document : WG-FSA-08/46 : Author(s): J. Roberts and D. J. Agnew (UK)
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The Ross Sea cephalopod community: insights from stable isotope analysis
identified as having relatively high importance in the food-web of the Ross Sea. However, information on the ... trophic ecology of the cephalopod assemblage of the Ross Sea region is poor. Stable isotope signatures of ... nitrogen (δ 15 N) and carbon (δ 13 C) were determined in muscle and beak tissue from a range of cephalopod ... stomachs of Antarctic toothfish Dissostichus mawsoni returned from the longline fishery. Most octopods were ...
Meeting Document : WG-EMM-12/55 : Author(s): D.R. Thompson, M.H. Pinkerton, D.W. Stevens (New Zealand), Y. Cherel (France), S.J. Bury (New Zealand)
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Gentoo penguin (Pygoscelis papua) population winter/summer behaviour and CEMP time-lapse cameras validation at Galindez Island in the 2018/19 season
during 2018-19 season. The detailed observation of bird arrival, nesting, hatch and crèche has been ... results of visual survey of penguin population and penguin count. During the 2018/19 season biologist ... of gentoo GBV and GPP sites. The results of visual observations of penguin population changes are ... discussed. The two seasons of the data validation experiment have been provided for pictures from time-lapse ...
Meeting Document : SC-CAMLR-38/BG/13 : Author(s): Delegation of Ukraine
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To what extent do type C killer whales (Orcinus orca) feed on Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea, Antarctica?
. It is also possible that changes in killer whale feeding can affect the structure and stability of ... commonly observed carrying toothfish in their mouths; (2) comparison of the relative nutrient density of ... toothfish with silverfish and other prey shows that toothfish represent a high-energy food resource of much ... higher quality than other potential prey in the Ross Sea region; (3) densities of other alternative ...
Meeting Document : WG-EMM-13/29 : Author(s): L. Torres, M.H. Pinkerton (New Zealand), R. Pitman, J. Durban (USA) and R. Eisert (New Zealand)
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Seabird research at Cape Shirreff, Livingston Island, Antarctica, 2004/05
Abstract: The eighth complete consecutive season of data collection at Cape Shirreff has enabled ... decline over the past six years, and is at its lowest size in the past eight years of study, and fledging ... success was poor compared to earlier years of study. The gentoo breeding population, in contrast, has ... of both species decreased from last year, and were the lowest average weights seen over nine years ...
Meeting Document : WG-EMM-05/9 : Author(s): A.K. Miller, E. Leung and W.Z. Trivelpiece (USA)
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Modifications to the Generalised Yield Model in 2004, version GYM501E.EXE
Abstract: The Generalised Yield Model is used by the WG-FSA in the assessments of Champsocephalus ... of reviewing the methods for estimating the time series of recruitments of D. elegionoides for WG-FSA ... in 2004 an error in the calculation of the recruitment series from survey data was detected. This ... error does not affect the assessments undertaken in recent years. This paper presents the nature of the ...
Meeting Document : WG-FSA-04/91 : Author(s): A.J. Constable (Australia)
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Fishing gear, marine debris and oil associated with seabirds at Bird Island, South Georgia, 2002/03
Abstract: This report describes and quantifies occurrences of fishing gear, marine debris and oil ... such annual report. As in most previous years, more items of fishing gear (mostly longlining gear) and ... , though numbers of both decreased slightly since last year. The quantity of fishing gear associated with ... giant petrels (northern and southern) was the second highest on record, and included five cases of ...
Meeting Document : SC-CAMLR-XXII/BG/09 : Author(s): Delegation of the United Kingdom