Résultats de la recherche
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Quantifying the escape mortality of trawl caught Antarctic krill (Euphausia superba)
fishing gear. The methods for determining fishing mortality in krill are still poorly developed. We used a ... covered codend sampling technique followed by onboard observations made in holding tanks to monitor ... mortality of krill escaping the trawl nets in our study was 4.4 ± 4.4 %, suggesting that krill are fairly ... tolerant of the capture-and-escape process in trawls. Author(s): B.A. Krafft, L.A. Krag, A. Engås, S ...
Meeting Document : WG-EMM-16/04 : Auteur(s): B.A. Krafft, L.A. Krag, A. Engås, S. Nordrum, I. Bruheim and B. Herrmann
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Population trends and reproductive success at a frequently visited penguin colony on the western Antarctic Peninsula
frequently visited locations, is at the epicenter of a rapid shift in which an Adélie penguin dominated fauna ... with larger trends in this region, the Adélie penguin population decreased by 29% and the gentoo ... Petermann Island. Whereas gentoo penguin reproductive success was lowest in colonies frequently visited by ... visited only occasionally. These results are placed in the context of other studies on reproductive ...
Meeting Document : WG-EMM-16/P07 : Auteur(s): H.J. Lynch, W.F. Fagan and R. Naveen
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Density and biomass of Antarctic krill around South Shetland Islands using by 2-dB difference method
aggregations in the Elephant Island peripheries and south of South Shetland Islands were higher than those in ... the west of the South Shetland Islands. The mean length/height ratio of krill aggregations in the west ... of the South Shetland Islands (64.5) was higher than that in the south (35.9) and the Elephant Island ...
Meeting Document : SG-ASAM-17/04 : Auteur(s): S.-G. Choi, K. Lee and D. An
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A von Bertalanffy growth model for toothfish at Heard Island fitted to length-at-age data and compared to observed growth from mark–recapture studies
frequencies were also included in defining relative probabilities, the VP maximum likelihood (MLPLB) and IWLS ... measured at release and first recapture in mark–recapture studies were compared where predictions used the ... developed and showed that the bias is relatively small for the range of release lengths in the data ... , the mean trend in observed AGR values with release length compared with those obtained using IWLS ... . When length- bin sampling frequencies were also included in defi ning relative probabilities, the VP ... annual growth rate (AGR) for lengths measured at release and fi rst recapture in mark–recapture studies ... the range of release lengths in the data. Predictions of AGR using the MLPLB-estimated VB parameters ... were closer to, but still substantially higher than, the mean trend in observed AGR values with ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 43–66 : Auteur(s): Candy, S.G., A.J. Constable, T. Lamb and R. Williams
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Computer program for the calculation and validation of Verhoeff check digits
type of errors in data for analysis are minimised. Accurate recording of the sequence numbers on tags ... the tag sequence number, can assist in the identification of errors in recorded data. A computer ...
Meeting Document : WG-FSA-SAM-05/11 : Auteur(s): A. Dunn (New Zealand)
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Proposed CCAMLR educational package
aged approximately 10 to 16, focusing on CCAMLR and its role in the Antarctic. This package would ... CCAMLR website and could also be available in hard copy for distribution by post. It would be produced in ...
Meeting Document : CCAMLR-XXII/11 : Auteur(s): Secretariat
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UPDATE ON ITEMS OF INTEREST TO WG-IMAF
Abstract: This paper documents recent and ongoing developments in New Zealand’s Exclusive ... within New Zealand’s EEZ in recent years that either breed or forage within the CCAMLR convention area ... mitigation trials that are underway in New Zealand. We also briefly report on the ongoing revision of the ...
Meeting Document : WG-IMAF-09/16 : Auteur(s): N. Walker (New Zealand)
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Diet of cape petrel, Daption capense, during late incubation and chick rearing period, at Laurie Island, South Orkney Islands, Antarctica
Islands in January-February 1995. Twenty stomach contents were sampled by a water offloading method ... , predominated in mass (97.2%) and in frequency (95%). Our results reflect broad similitary with other studies ...
Meeting Document : WG-EMM-95/85 : Auteur(s): Coria, N.R., Montalti, D., Soave, G.E.
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Infectious diseases and parasites of Antarctic and sub Antarctic penguins and the implications for CEMP
present a summary of all such diseases of penguin species found in the Antarctic and sub-Antarctic ... . Haematological and biochemical values for healthy penguins which may be of use in diagnosis are presented also ... monitored we suggest that health of monitored species also should be considered in CEMP. Author(s): J ...
Meeting Document : WG-CEMP-94/34 : Auteur(s): J. Clarke and K. Kerry (Australia)
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Estimating krill recruitment and its variabiliity
length data into the proportion of recruits in population sampled in a net haul survey. Preliminary ... results from a series of 5 net haul surveys in the South Atlantic and the Indian Ocean sectors of the ...
Meeting Document : WG-KRILL-93/12 : Auteur(s): W. de la Mare (Australia)