Search results
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Conceptual model of icefish (Champsocephalus gunnari)
Abstract: The Convention for the Conservation of Antarctic Marine Living Resources (CCAMLR) is ... currently considering plausible models of the Southern Ocean ecosystem within the Working Group on Ecosystem ... Monitoring and Management (WG-EMM). The icefish, Champsocephalus gunnari, is one of the key components in the ... subantarctic marine ecosystem in the Scotia Sea and northern Kerguelen Plateau areas, as well as supporting ...
Meeting Document : WG-EMM-04/59 : Author(s): R. Williams (Australia)
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Blue-eyed shags as indicators of changes in ittora fish populations
Abstract: The use of Shag’s pellets as an appropriate technique to monitor the abundance of ... littoral fish populations is presented for consideration of the CCAMLR Ecosystem Monitoring Program Working ... Group. The effectiveness of the method is based on the very good agreement found between the fish ... species identified by the examinations of otoliths present in regurgitated cast and those regularly ...
Meeting Document : WG-CEMP-93/25 Rev. 1 : Author(s): R. Casaux and E. Barrera-Oro (Argentina)
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Executive Secretary’s Report 2016/17
Abstract: This annual report from the Executive Secretary, for the 12-months since CCAMLR-XXXV ... , is accompanied by an Implementation Report for the third year of the Secretariat’s Strategic Plan ... (2015–2018) and a report on implementation of the Secretariat’s Salary and Staffing Strategy during 2017 ... . Consistent with the Commission’s decision in 2002, these documents provide, inter alia, a basis for the ...
Meeting Document : CCAMLR-XXXVI/05 : Author(s): Executive Secretary
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Preliminary analysis of seabird by-catch using CCAMLR observer data
Dissostichus eleginoides and various factors, including the nature and use of mitigating measures as well as ... presence/absence of seabird catches and a Gamma model for the magnitude of non-zero catches. Sparsity of ... combined. Other analytical difficulties, particularly in using generalised linear models, related to the ... large number of potentially important factors, the lack of overlap between factors and the fact that ...
Meeting Document : WG-FSA-99/28 : Author(s): D.J. Agnew and J.P. Croxall (United Kingdom)
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Krill population dynamics at South Georgia 1991–1997, based on data from predators and nets
scientific nets from the same area over the summers of 1991-1997. In comparing the 5 years with both predator ... sampling the same overall krill population. Greatest similarity results from comparing net samples with ... samples from late summer (March). From the 7-year predator time-series, within-year variation was greatest ... krill dominated during December but were completely replaced by small krill by February. The mean length ...
Meeting Document : WS-AREA 48-98/15 : Author(s): K. Reid, J. Watkins, J. Croxall and E. Murphy (UK)
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Male krill grow fast and die young
Abstract: The size-differentiated sex ratio (proportion of males: POM) of Antarctic krill was ... examined with an extensive dataset derived from scientific surveys in the Indian Ocean sector and the ... southwest Atlantic sector, and from the krill fishery in the Southern Ocean. The percentage of males in size ... , sometimes showed higher values in 45-50 mm krill, but always decreased in the largest krill (>50 mm ...
Meeting Document : WG-EMM-07/P6 : Author(s): S. Kawaguchi, L.A. Finley, S. Jarman, S.G. Candy (Australia), R.M. Ross, L.B. Quetin (USA), V. Siegel (Germany), W. Trivelpiece (USA), M. Naganobu (Japan) and S. Nicol (Australia)
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Seabird observations in Subareas 48.1, 48.2 and 88.3 and proposal for a new streamer line design
of the New Fisheries Project developed by Chile in Statistical Subareas 88.3, 48.1 and 48.2. During ... , carrying out bird observations in each one of the 52 castings with the Spanish-designed longlines as well ... . The streamer line suggested by the CCAMLR was not appropriate during wind conditions, so an alternate ... simpler construction and increased visibility. Neither bird capture nor mortality was reported during the ...
Meeting Document : WG-FSA-98/19
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Herpes virus antibodies in Arctocephalus gazella from Cape Shirreff, Livingston Island, Antarctica
bovine herpesvirus-1 (BHV-1) strain. Antibodies against BHV-1 were detected in four (7.4%) samples. The ... utility of the extra vascular fluid for serological research in this matter is suggested. It is also ... recognized the microneutralization test as sensitive method for this search. This finding also contribute ... with the knowledge confirming the extended distribution range of herpesvirus, affecting a large number ...
Meeting Document : WG-EMM-01/59 : Author(s): O. Blank, J.M. Montt, M. Celedón and D. Torres (Chile)
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Models of larvae dispersion of Antarctic toothfish (Dissostichus mawsoni)
from the Antarctic continent north to approximately 57° S. Efforts to understand early life history and ... stock structure in the Ross Sea have parallels for populations in other regions of the Antarctic, and ... hypotheses about how stock structure is maintained may apply to each population. We provide an update of the ... circumpolar models of larval dispersion for D. mawsoni developed by Hanchet et al. (2008) using the HiGEM ...
Meeting Document : WG-FSA-12/48 : Author(s): A. Dunn, G.J. Rickard, S.M. Hanchet and S.J. Parker (New Zealand)
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Identification of marine Important Bird and Biodiversity Areas for penguins in South Shetland and South Orkney Islands: a comparison of two different approaches
on pre-existing approaches but revised according to the specific ecology of Pygoscelis penguin ... species; • Key improvements to the pre-existing approach include 1) refining track interpolation methods ... , and 2) revision of parameters for the kernel analysis (the smoothing factor and the utilization ... distribution); • We applied the revised method to 24 datasets of tracking data (three species, seven colonies ...
Meeting Document : WG-EMM-17/35 : Author(s): M.P. Dias, A.P.B. Carneiro, V. Warwick-Evans, C. Harris, K. Lorenz, P. Trathan