Search results
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Can we use discriminant function analysis to sex penguins prior to calculating an index of a morphometric characteristic?
a certain proportion of birds. Two overlapping normal distributions are used to show ... that there is a difference between the real mean characteristic for a sex, and the apparent mean derived by sexing the birds ... of birds with greater than 80% success, the difference between the true and apparent mean is likely ... to be undetectable when fewer than 600 birds are sampled. Therefore, under most normal sampling regimes ... the sex of individuals, it is only able to correctly sex a certain proportion of birds. Two overlapping ... for a sex, and the apparent mean derived by sexing the birds using discriminant analysis. When ... discriminant functions are able to correctly determine the sex of birds with greater than 80% success ... , the difference between the true and apparent mean is likely to be undetectable when fewer than 600 birds ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 259–272 : Author(s): Agnew, D.J.
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Fishing ground selection in the Antarctic krill fishery: trends in patterns across years, seasons and nations
Fishing ground selection in the Antarctic krill fishery The USA is a new entrant into the krill fishery ... ), and this is likely to affect the pattern of fish- ing strategies or selection of fishing grounds. New fishing ... methods Finally, there are concerns about the introduction of new fishing techniques which may well ... change fishing patterns, time allocation, and the types of krill swarms targeted. Such new techniques ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 117–141 : Author(s): Kawaguchi, S., S. Nicol, K. Taki and M. Naganobu
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CCAMLR ecosystem monitoring program standard methods: determination of sex of Adelie penguins
when more than 90% of the incubating birds were male and a 6- or 7-day period when more than 90 ... % of the birds were female. The dates of these peak periods of male or female presence overlapped by only ... and peak presence of females after 33–36 days from this date. In all three seasons male birds could ... or capturing the birds. Author(s): K.R. Kerry, J.R. Clarke and G.D. Else (Australia) Title: CCAMLR ecosystem ...
Meeting Document : WG-CEMP-94/08 : Author(s): K.R. Kerry, J.R. Clarke and G.D. Else (Australia)
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The biology, ecology and development of fishery management advice for the anomuran crabs at South Georgia (CCAMLR Subarea 48.3)
in the permit for exploratory research fishing issued by the US National Marine Fisheries Service to the FV ... . 1894. Descriptions of new genera and species of crabs of the family Lithodidae, with notes ... bottlenecks in the distribution of marine Crustacea: tem- perature constraints in the family Lithodidae ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 1–15 : Author(s): Belchier, M., T. Peatman and J. Brown
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Assessment and management advice for other areas and species in the Atlantic Ocean
of reopening the two areas for commercial finfishing. No new information has become available since ... New information has been provided on fish stocks in both subareas from the US ICEFISH cruise in June ... to the lack of new information on the current status of the stock, the Working Group recommended ... that the fishery remain closed. It should only be reopened after a new survey on this species is conducted ...
Document : Site Section: Publications
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Conservation Measure Conservation Measure 230/XX (2001)
. in accordance with Conservation Measure 65/XII and the new fishery for Macrourus spp. in accordance ... Division 58.4.2 shall be limited to the new trawl fishery by Australia. The fisheries shall be conducted ... fishery for Dissostichus spp. and the new fishery for Macrourus spp. in Statistical Division 58.4.2 ... fishing a new strip. If the adjacent closed strip has already been surveyed, a new survey ...
Conservation Measure : 230/XX (2001)
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BIRDLIFE INTERNATIONAL GLOBAL PROCELLARIFORME TRACKING DATABASE – 2008 UPDATE
Abstract: Three GLS datasets were added to the BirdLife Global Procellariform Tracking Database ... in 2008. Author(s): B. Sullivan (BirdLife International) Title: BIRDLIFE INTERNATIONAL GLOBAL ... Three GLS datasets were added to the BirdLife Global ... B. Sullivan (BirdLife International) ...
Meeting Document : WG-IMAF-09/13 : Author(s): B. Sullivan (BirdLife International)
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Champsocephalus gunnari South Georgia (Subarea 48.3)
, Annex 5, paragraphs 5.103 and 5.104). Acoustic surveys 5.218 No new estimates of standing stock were ... . Conservation Measure 42-01. 6. By-catch of birds and mammals 5.238 Details of seabird by-catches ...
Document : Site Section: Publications
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Seabird mortality in the Patagonian toothfish longline fishery around the Prince Edward Islands, 1996–2000
(particularly grey-headed albatrosses Thalassarche chrysocome) were also killed. Birds were caught almost ... exclusively during their breeding seasons and most birds killed were breeding adult males from the Prince ... revenue by allowing these birds to access baited hooks. Rates of seabird bycatch in the sanctioned fishery ... decreased from 0.19 birds/1000 hooks to 0.034 birds/1000 hooks during the time of this study ...
Meeting Document : WG-FSA-01/8 : Author(s): D.C. Nel, P.G. Ryan and B.P. Watkins (South Africa)
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Seabird by-catch in the Patagonian toothfish longline fishery at the Prince Edward Islands: 2001–2002
birds: two White-chinned Petrels Procellaria aequinoctialis and one Grey Petrel P. cinerea. Average ... seabird bycatch rate by sanctioned vessels was 0.001 birds per 1 000 hooks which is a significant drop ... from the previous season when 0.009 birds were killed per 1000 hooks. Author(s): B.P. Watkins (South ... /2001 (Ryan & Watkins 2001). The number of seabirds reported killed by the observers was three birds ...
Meeting Document : WG-FSA-02/17 : Author(s): B.P. Watkins (South Africa)