Search results
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Implanted identification tags in penguins: implantation methods, tag reliability and long-term effects (draft version)
identifying individual penguins by both manual and automated means. We have found the survival of tagged ... problems associated with the use of implanted devices. The transponder removed from one bird had developed ... a slimy biofilm harbouring potentially pathogenic organisms incorporated at the time of implantation ... . If such contamination is common it is possible that the long-term survivorship of tagged groups of ...
Meeting Document : WG-EMM-Methods-96/08 : Author(s): Kerry, K., Clarke, J.
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Seabird interaction with long-lining operations for Dissostichus eleginoides around South Georgia, April and May 1994
mortalities recorded over twenty sets of the line; no mortalities occurred during hauls. The 16 sets made at ... night contributed 15% of the overall mortality, all of white-chinned petrels: the four day time sets ... decline, were disproportionately affected in relation to their numbers in the vicinity of the fishing ... vessel; giant petrels also may be disproportionately affected, at least in relation to the size of their ...
Meeting Document : WG-IMALF-94/15 : Author(s): J.R. Ashford, J.P. Croxall (United Kingdom), P.S. Rubilar and C.A. Moreno (Chile)
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REPORT ON TRANSHIPMENT OF KRILL IN 2009
Abstract: Report on transhipment of krill in 2009 Delegation of Japan Abstract: According to the ... in the CCAMLR Convention Area in 2009, as a background paper for CCAMLR annual meeting to be held in ... October 2010. Explanation: According to the Conservation Measure 10-09 “Notification system for ... transshipments within the Convention Area”, especially in accordance with the paragraph 6 of the Measure, Japan ...
Meeting Document : CCAMLR-XXIX/BG/05 : Author(s): Delegation of Japan
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Proposal for trials to test modified longline gear as a means to reduce cetacean depredation and mitigate incidental bird catch
Abstract: The UK undertook preliminary trials of the previously described “cone” or “bottle ... conjunction with the observer’s report of that cruise (Basson 2006). Initial results were promising, and the ... UK intends to proceed with further, more extensive trials, in the 2007/08 fishing season in Subarea ... 48.3. Although seabird interactions are expected to be minimal, the trials will stop if 3 seabirds are ...
Meeting Document : WG-FSA-07/31 : Author(s): Delegation of the United Kingdom
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Oil, paint, marine debris and fishing gear associated with seabirds at Bird Island, South Georgia, 1997/98
Abstract: This report describes and quantifies the occurrence of oil, paint, marine debris and ... fishing gear associated with seabirds at South Georgia. In this, the fifth year of standardised recording ... , a marked increase in the quantity of plastic debris associated with seabirds was evident; quantities ... of fishing gear remained within the levels of previous years for all species (although the number of ...
Meeting Document : SC-CAMLR-XVII/BG/10 : Author(s): Delegation of the United Kingdom
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Krill length and age at maturity
Abstract: Data from several summer surveys to the Antarctic Peninsula region were analysed to ... calculate length and age at maturity for the Antarctic krill Euphausia superba. L50 values of 34.62 to 35.90 ... mm for female krill are the best estimates for the high spawning season. Males attain sexual maturity ... identical for krill. Comparisons with length at age data show that females mature in the third year of the ...
Meeting Document : WG-KRILL-93/40 : Author(s): V. Siegel (Germany) and V. Loeb (USA)
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Automated data processing using Echoview
reappraisal of many of the current methods for data processing and analysis. For some acoustic data sets ... manual processing is no longer an option; the large size of the data set is preventing analysis. This ... using Echoview, EK60 data and the Echoview R package available in the statistical language R. Whilst ... the scripting of Echoview through EchoviewR has been successful, there are several challenges ...
Meeting Document : SG-ASAM-15/01 : Author(s): M.J. Cox (Australia), G. Skaret (Norway), L.-M.K. Harrison and R. Harcourt (Australia)
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Population assessment of Antarctic toothfish in Subarea 48.4 using tag-recapture method
Abstract: The stock of Antarctic toothfish in the CCAMLR subarea 48.4 was estimated using as the ... Petersen method as 640 tonnes. Application of the harvest rate used for D. eleginoides in Subarea 48.3 (γ ... = 0.038) gives yields of 24 t for the Antarctic toothfish in the region vs. previous estimation of 30 ...
Meeting Document : WG-FSA-13/64 : Author(s): V. Laptikhovsky (United Kingdom)
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An assessment of seabird interactions with longlining operations for Dissostichus eleginoides around South Georgia, March–May 1997
interactions with seabirds, and the effectiveness of measures employed to mitigate seabird mortality. In this ... study 61 lines were laid during April and May, all set at night using the Spanish double-line method ... with extra weights on the line and all deck-lights extinguished. Data were recorded during hauling ... into the side of the vessel. Few birds were generally seen following the vessel during setting ...
Meeting Document : WG-FSA-97/09 : Author(s): Ashford, J.R., Croxall, J.P.
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Spatial variability and power to detect regional-scale trends
Abstract: An important issue in regional-scale trend detection is the degree of concordance in ... between sites than within sites over time, inter-site variance can overwhelm the effects of other sources ... -scale surveys of Adelie penguin breeding population size in east Antarctica to assess the degree of ... spatial concordance in population trends within the scale of notional small-scale management units, and ...
Meeting Document : WG-EMM-03/47 : Author(s): C. Southwell and L. Emmerson (Australia)