Search results
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The role of fish in the Antarctic marine food web: differences between inshore and offshore waters in the southern Scotia Arc and west Antarctic Peninsula
scarcely documented, their abundance in neritic waters could be higher than previously believed. Author ... scarcely documented, their abundance in neritic waters could be higher than previously believed. ...
Meeting Document : WG-FSA-02/6 : Author(s): E. Barrera-Oro (Argentina)
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Breeding biology of Adélie penguin (Pygoscelis adeliae) at Edmonson Point CEMP site (Ross Sea, Antarctica): report of the first five years
, in this instance the Adélie penguin. It is believed that any such impact will be difficult to detect initially ... the Adélie penguin. It is believed that any such impact will be difficult to detect initially because ...
Meeting Document : WG-EMM-99/60 : Author(s): S. Olmastroni, S. Corsolini, F. Pezzo, S. Focardi (Italy) and K. Kerry (Australia)
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Assessing data requirements for tag-based estimates of local biomass in data-poor and exploratory fisheries
Abstract: This study used an operating model to simulate a Dissostichus eleginoides population in ... Research Block 5843a_1 with a fixed exploitation rate and various tagging rate scenarios to assess the ... estimator. The results showed that tag-based biomass estimates obtained from a low numbers of recaptures ... will have a high risk of over-estimating biomass and that for a given number of tagged fish available a ...
Meeting Document : WG-SAM-17/13 : Author(s): L. Robinson, P. Burch and K. Reid
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Defining fishing grounds in the Scotia Sea
Abstract: This paper provides a method for delineating krill fishing grounds in Area 48 based on ... relationship between the fishing grounds and the krill population. We define a fishing ground as being a ... predictable location where the fishery obtains relatively reliable catches from one year to the next over a ... number of years. The quantity of interest is not only the total catch obtained from a location, say a 10 ...
Meeting Document : WG-EMM-02/40 Rev. 1 : Author(s): I.R. Ball and A.J. Constable (Australia), S. Kawaguchi (Japan) and D. Ramm (CCAMLR Secretariat)
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Estimating fishing gear selectivity for trawlers using length-frequency data from concurrent commercial trawl and longline fishing for Patagonian toothfish in Division 58.5.2 and the ratio of their hazard functions
for Patagonian toothfish around Heard Island (Division 58.5.2) was modelled as the exponential of a ... length classes as a function of fishing depth, a log-linear hazard function for each gear type was fitted ... by a technique used to model grouped survival data. The hazard function relates to the event of a ... fish falling in a particular length bin, analagous to a death in a given time interval in survival ...
Meeting Document : WG-FSA-06/35 : Author(s): S.G. Candy (Australia)
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Influence of tag numbers, size of tagged fish, duration of the tagging program, and auxiliary data on bias and precision of an integrated stock assessment
Abstract: Using a modeling framework for toothfish population dynamics, fishing and data ... collection, this study investigated how the bias and precision of a CASAL assessment is influenced by various ... aspects of a tagging program, in particular the effects of the numbers of fish tagged, the duration of a ... simulation study indicated that: (1) A high tag size-overlap (at least 60%, better 100%) and high tagging ...
Meeting Document : WG-SAM-12/24 : Author(s): P.E. Ziegler (Australia)
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Fisher training exchanges in seabird mitigation
. The aim was to provide a placement for a fisher from a Latin American county on board a vessel ... operating in the New Zealand fishery, which had a proven record of seabird-friendly fishing techniques. The ... a Chilean skipper, Luis Uribe- a swordfish fisher from working in the Southern Chilean artisanal ... fleet- on board a the Sanford vessel San Aotea II, using demersal longline methods to fish for ling and ...
Meeting Document : WG-FSA-05/47 : Author(s): S. Waugh (New Zealand)
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CCAMLR-IWC WORKSHOP TO REVIEW INPUT DATA FOR ANTARCTIC MARINE ECOSYSTEM MODELS: UPDATE ON PROGRESS 2008
an update on progress towards the holding of this workshop at the CCAMLR Secretariat. A revised ... , including seals, whales, finfish and krill. A metadatabase has been established. The groups of experts have ... cover a number of groups and a group of experts familiar with statistics, assessments and ecosystem ... modelling. Originally, the outcomes of the Workshop were envisaged to comprise a paper from each of the ...
Meeting Document : WG-EMM-08/15 : Author(s): A. Constable and N. Gales (Co-conveners)
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Methodology for automated spatial sea ice summaries in the Southern Ocean
Abstract: Sea ice is recognised as a core driver of both ecosystem dynamics and fishery ... access are in use by CCAMLR. We develop a method to spatially and temporally summarise satellite-derived ... operations around the Antarctic continental margin. A spatial view is used to characterise the spatial ... dynamics of sea ice in a target location for a specified period, and a temporal view is used to ...
Meeting Document : WG-FSA-14/54 : Author(s): S.J. Parker, S.D. Hoyle, J.M. Fenaughty and A. Kohout (New Zealand)
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RELEVANT ISSUES IN REGARDS TO THE MANAGEMENT OF ANTARCTIC KRILL FISHERIES IN AREA 48
Abstract: In 2008, the Ukraine submitted a paper to the Scientific Committee highlighting the ... limits among SSMUs in Area 48 (CCAMLR- XXVII/43). The Ukraine suggested that a research plan was ... necessary for CCAMLR to fill those gaps, together with developing in future a funding mechanism to support ... useful in a course of the consideration a decision on a Stage 1 allocation. In addition, this meeting ...
Meeting Document : WG-EMM-09/31 : Author(s): L. Pshenichnov and G. Milinevsky (Ukraine)