Search results
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Calculation of indices of sea-ice concentration using digital images from the National Snow and Ice Data Centre
Abstract: A method is described for calculating indices of sea ice distribution from digital data ... distributed by the National Snow and Ice Data Centre, Colorado, USA. Data consist of an image of the Antarctic ... , made up of 312x332 pixels, each having a dimension of 25x25km, for every day in the year. Primary data ... of the distance of sea ice from CEMP sites, the northerly position of the sea ice edge, and the ...
Meeting Document : WG-EMM-95/11 : Author(s): Agnew, D.J.
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Future work of the Working Group on Ecosystem Monitoring and Management and implications for the format of its meetings
distributed predationpressure and randomly determined recruitment. The effects of uncertainty with regard ... fishing pressure are not. However, WG-EMM also maintains amonitoring program that could provide some of ... for assembling thesecomponents was developed at the first meeting of WG-EMM and considerable ... progresshas been made on a number of contributing initiatives. WG-EMM currently considers awide range of ...
Meeting Document : SC-CAMLR-XIX/06 : Author(s): Convener WG-EMM
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DEVELOPMENT OF A REGISTRY OF VULNERABLE MARINE ECOSYSTEMS IN THE CONVENTION AREA
Abstract: Conservation Measure (CM) 22-06 requires the Secretariat to maintain an inventory of ... fishery and their Flag States of the location of VME risk areas and fine-scale rectangles. The Secretariat ... has established an interim VME registry for archiving notifications of encounters with VMEs during the ... course of research surveys (CM 22-06) and VME-indicator notifications from fishing vessels (CM 22-07 ...
Meeting Document : WG-FSA-09/06 : Author(s): Secretariat
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Fish in the diet of the blue-eyed shag Phalacrocorax atriceps at the South Shetland Islands: six years of monitoring studies
Abstract: In this document we inform on the results of six years monitoring changes in the diet ... of the Blue-eyed Shag Phalacrocorax atriceps as reflected by the analysis of regurgitated pellets ... collected at two localities of the South Shetland Islands. The comments are mainly focused on Gobionotothen ... gibberifrons and Notothenia rossii, species of particular interest for CCAMLR. Notothenia rossii appeared in ...
Meeting Document : WG-EMM-96/31 : Author(s): Barrera-Oro, E., Casaux, R.
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Progress report on the joint research for Dissostichus spp. in Subarea 88.3 by the Republic of Korea and New Zealand and notification of research in 2018/19
–883_5. Due to extreme ice conditions covering the southern part of 88.3, the Janas (NZL) was not able to ... conduct its part of the survey. The total catch of D. mawsoni was 38,856 kg comprised of 1,380 individuals ... in blocks 883_3 and 883_4 showed similar values of 0.1369 and 0.1466 kg/hook, research block 883_5 ... per tonne and 72%. The length frequency of D. mawsoni exhibited a bimodal distribution with modes near ...
Meeting Document : WG-SAM-18/05 : Author(s): Delegations of the Republic of Korea and New Zealand
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Spatial and temporal variability in the fish diet of Antarctic fur seal Arctocephalus gazella in the atlantic sector of the southern ocean
Abstract: The spatial and temporal variability in the fish component of the diet of Antarctic fur ... seals Arctocephalus gazella (Peters 1975) in the Atlantic sector of the Southern Ocean was examined ... habitat/topography. The absence of formerly harvested fish species indicates a lack of recovery of stocks ... of Notothenia rossii (Richardson 1844) at South Georgia and Champsocephalus gunnari (Lönnberg 1905 ...
Meeting Document : WG-EMM-06/P5 : Author(s): K. Reid, D. Davis, I.J. Staniland (United Kingdom)
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Acoustic visualization of the three-dimensional prey field of foraging chinstrap penguins
Abstract: Predator-prey interactions play an important role in determining the dynamics of ... ecosystems. Recently, concerns have arisen due to the commercial harvesting of Euphausia superba, the ... these concerns because of problems associated with determining the availability of krill to their ... -dimensional distribution of krill within a 1852 X 1852 X 100 m volume of ocean. Our study revealed the ...
Meeting Document : WG-Joint-94/12 : Author(s): J.E. Zamon, C.H. Greene, E. Meir, D.A. Demer, R.P. Hewitt and S. Sexton (USA)
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Diet and trophic niche of Macrourus spp. (Gadiformes, Macrouridae) in the Ross Sea region of the Southern Ocean
Sea region at depths between approximately 500 and 2100 m. We present the analysis of stomach contents ... (including regurgitated stomach contents) from an undifferentiated mixture of 33 specimens of these species ... (henceforth Macrourus spp.) in the Ross Sea region of the Southern Ocean. Samples of stomach contents were ... . Overall, amphipods were the dominant prey found in Macrourus spp. stomachs with an index of relative prey ...
Meeting Document : WG-EMM-12/P03 : Author(s): M.H. Pinkerton, J. Forman, D.W. Stevens, S.J. Bury and J. Brown
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Possible effects of different levels of fishing on krill on predators - some initial modelling attempts
Meeting of the CCAMLR's WG-Kril1 and WG-CEMP in 1992 to address this issue. First. estimates are made ... of the parameters of predator survival rates as functions of krill abundance, by considering a krill ... . Computations based on this model indicate that variability in the annual recruitment of krill results in ... . However, the analyses also raise a number of questions about the proper interpretation of the available ...
Meeting Document : WG-KRILL-93/43 : Author(s): D.S. Butterworth and R.B. Thomson (South Africa)
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Assessing the feasibility of regional surveys of land-based predator abundance in the Southern Ocean: a framework for decision making and planning
Abstract: In 2000 WG-EMM discussed the need for region-wide and circum-Antarctic estimates of ... abundance of land-based predators. At the 2001 meeting of WG-EMM it was proposed that a workshop be held in ... 2002 to assess the feasibility of such broad-scale surveys, and a small intersessional correspondence ... group was formed to scope out the terms of reference and method of operation for the workshop. The ...
Meeting Document : WG-EMM-02/45 : Author(s): C. Southwell (Australia)