Résultats de la recherche

1. Report on an Antarctic cetacean survey on board a Chilean fishing vessel in February 2016

   , comprising 217 individuals, including calves of both humpback and fin whales. The preliminary results of the ... video cameras to the bow and stern section of the ship to assess any potential behavioural response to ... Abstract:  During a CCAMLR endorsed fishing survey on board the Chilean trawler ‘Cabo de Hornos ... ’ around the South Orkney Islands and Elephant Island, a trained marine mammal observer conducted a ...

   Meeting Document : WG-FSA-16/19 : Auteur(s): S. Viquerat, H. Herr, K.-H. Kock and P. Arana

2. A preliminary stock assessment in SSRUS 486A, G: A Bayesian and CPUE based biomass dynamic model

   implemented in each species of toothfish. Tagging data was not used in any of the toothfish models, because of ... the low number of recovered individuals and low tag size-overlap. Modelling abundance in both species ... contribution to estimate abundance in a simple biomass dynamic model for both species of toothfish in northern ... sets in which both species are present, and thus, an analysis of catch intention was implemented by ...

   Meeting Document : WG-SAM-13/29 : Auteur(s): R. Wiff, J.C. Quiroz (Chile) and R. Scott (United Kingdom)

3. Modelling variability and estimating power to detect change in Adélie penguin fledgling weights

   the number of birds weighed in each five-day period from 50 to 30 without substantial loss of power ... fledgling weights Abstract / Description:  Statistical models of variation in Adélie penguin fledgling ... weight data were used to examine the power to detect a change in fledgling weights after an impact. The ... year, but there was no evidence that the rate of decline differed between years. A consequence of this ... ). Estimates of the parameters A and B in equa- tion (2) were employed in equation (3) to estimate mean weight ... change in mean fledgling weight at time x without a change in variability, then the variances of the ... – 1) degrees of freedom. If interest lies in the detection of a change in the expected mean weight ... Abstract Statistical models of variation in Adélie penguin fledgling weight data were used to examine the ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 191–200 : Auteur(s): Emmerson, L.M., C. Southwell and J. Clarke

4. Educational observer on board fishing vessels in Brazil

   /obligation on the usage of these measures is in force. Author(s):  Delegation of Brazil Title:  Educational ... Abstract:  We inquired several social aspects of two Brazilian crews working in pelagic longline ... order to investigate the social and professional character of each crew member. Overall, our results ... show a low level of studies among these professionals. We suggest the implementation of a new concept ...

   Meeting Document : SC-CAMLR-XXV/BG/20 : Auteur(s): Delegation of Brazil

5. A bioenergetics model for estimating prey consumption by an Adélie penguin population in east Antarctica

   . The model predicts prey consumption throughout the breeding season and incorporates uncertainty in ... , and a year with low breeding success. On the basis of variable breeding success and the proportion of ... krill and fish in their diet, we estimate that this population consumes 78-406 t of krill and 4-46 t of ... Abstract:  We developed a bioenergetics model to estimate prey consumption by the Adelie penguin ...

   Meeting Document : WG-EMM-16/P10 : Auteur(s): D. Southwell, L. Emmerson, J. Forcada and C. Southwell

6. Krill catch distribution in relation to predator colonies, 1987-1991

   Abstract:  The distribution of krill catches in relation to predator colonies in Subareas 48.1 and ... December and March, and these are between 10 and 18% of the estimated total penguin consumption in this ... period. The pattern of fishing is very consistent in all years 1988-1991 in Subarea 48.1, but is more ... % of the estimated total penguin consumption. The largest catch taken in this critical period was 94 ...

   Meeting Document : WG-KRILL-92/18 : Auteur(s): Secretariat

7. Estimating toothfish biomass in Subarea 48.3 using local depletions

   means of estimating toothfish density at South Georgia. Over the four years 2000-2003, we found 25 areas ... of 12’ by 12’ where there had been forty or more hauls in any particular year. There were 62 ... individual vessel fishing events in these areas over this period, 40 of which appeared to be depletions ... CPUE over the four years and multiplying by the total fishable area in Subarea 48.3 we arrived at an ...

   Meeting Document : WG-FSA-SAM-04/18 : Auteur(s): Pearce, J., Agnew, D.

8. Length-at-age in juvenile Patagonian toothfish (Dissostichus eleginoides)

   estimated from reading otoliths in a goodness-of-fit test. The majority of the otoliths (83.6%) were ... / Description:  We used the otoliths from a sample of Dissostichus eleginoides pre-recruits, whose length ... observed in the length density represent different age cohorts separated by one year. File:  01ashford.pdf ... estimated to be from fish 1+ or 2+ years old, with mean total lengths of 32.5 cm and 41.3 cm respectively ... of the mean length of fi sh spawned the previous July, fi sh estimated as 0+ in January in this ... on length, and compared with ages estimated from reading otoliths in a goodness-of-fi t test. The ... increase in the total catch of the fi shery, better information was urgently required. Reliable ... used in the past to estimate the age of D. eleginoides, it has been demonstrated (Ashford et al ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 1–10 : Auteur(s): Ashford, J., C. Jones, S. Bobko and I. Everson

9. Seal mitigation measures on trawl vessels fishing for krill in CCAMLR Subarea 48.3.

   ) in Siena, Italy, the UK reported on the by-catch of fur seals (Arctocephalus gazella) in the krill ... fur seal deaths in the fishery. WG-EMM requested that the UK provide further details of the methods ... Abstract:  At the 2004 meeting of the Working Group on Ecosystem Monitoring and Management (WG-EMM ... entanglements on krill vessels fishing around South Georgia in the 2004 fishing season. The measures implemented ...

   Meeting Document : WG-FSA-05/P1 : Auteur(s): Charman, C., Clark, J., Hooper, J., Agnew, D.

10. Delayed laying and prolonged fasting in Adelie penguins Pygoscelis adeliae

    penguins in this situation, recorded the laying dates and lengths of fasting periods Author(s):  Joachim ... sites had to delay egg laying until the snow melted. Maximum length of fasting periods comprising pre ... pebbles necessary for nest building were unattainable. Consequently, we observed the behaviour of the ... Abstract:  Observations of nesting Adélie Penguins (Pygoscelis adeliae) were made at Ardley Island ...

    Meeting Document : WG-CEMP-94/23 : Auteur(s): Joachim Ulbricht and Detlev Zippel (Germany)

Pages