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1. Extinction risk of Antarctic and sub-Antarctic colonies of Pygoscelid penguins under climate change context

   different colonies around Antarctica. In this study, the extinction risk of Adélie, Chinstrap and Gentoo ... Abstract:  Several studies have emphasized the variable abundance of Pygoscelid penguins from ... penguins was evaluated in order to identify the most endangered colonies under present-day and future ... structure and the response of population dynamics of each colony to exogenous perturbations. The ...

   Meeting Document : WG-EMM-2019/74 : Автор(ы): M. Huerta and S.A. Estay

2. Peak mortality of krill, fished with midwater trawls and feasible criteria of krill trawls ecological safety

   elimination probability caused by cath and mortality in fishery operations. The coefficient of trawl ... Abstract:  The mathematical model of a fishery object contact against a mesh, while escaping ... ecological safety is offered, which is the ratio of the amount of the objects caught and objects caught and ... died during fishery. The equations are presented to estimate the gross removal of an object by the ...

   Meeting Document : WG-KRILL-93/34 : Автор(ы): Yu. V. Kadilnikov (Russia)

3. A review of methodologies aimed at avoiding and/or mitigating incidental catch of protected seabirds.

   published reviews in the field of bycatch mitigation have typically had a species or fishing method focus ... management of offal and discards are recommended as the most effect measure to reducing seabird bycatch in ... fisheries interactions have been released in a variety of local, national and international media. Recent ... . This report presents the results of the seabird component of a global review of mitigation methods ...

   Meeting Document : WG-FSA-05/P8 : Автор(ы): Bull, L.

4. Models of larvae dispersion of Antarctic toothfish (Dissostichus mawsoni)

   stock structure in the Ross Sea have parallels for populations in other regions of the Antarctic, and ... locations in the northern areas of Subarea 88.1 & 88.2 to further investigate the possible larval ... hypotheses about how stock structure is maintained may apply to each population. We provide an update of the ... circumpolar models of larval dispersion for D. mawsoni developed by Hanchet et al. (2008) using the HiGEM ...

   Meeting Document : WG-FSA-12/48 : Автор(ы): A. Dunn, G.J. Rickard, S.M. Hanchet and S.J. Parker (New Zealand)

5. Using tag-recapture data to estimate catchability of a series of random stratified trawl surveys

   Heard Island and McDonald Islands (HIMI) in Division 58.5.2, a prior for catchability q of the random ... address potential bias in the estimation of q and conclude that the potential bias that may arise from ... fishing selectivity cannot be corrected for given the available data.   In the absence of an unbiased ... used for abundance estimates from trawl surveys in a toothfish stock assessment. The bounds of such as ...

   Meeting Document : WG-SAM-15/34 : Автор(ы): W. de la Mare, P. Ziegler and D. Welsford (Australia)

6. Possible effects of different levels of fishing on krill on predators - some initial modelling attempts

   Meeting of the CCAMLR's WG-Kril1 and WG-CEMP in 1992 to address this issue. First. estimates are made ... . Computations based on this model indicate that variability in the annual recruitment of krill results in ... predator population dynamics information in the context of the models developed, and about the model1ing of ... of the parameters of predator survival rates as functions of krill abundance, by considering a krill ...

   Meeting Document : WG-KRILL-93/43 : Автор(ы): D.S. Butterworth and R.B. Thomson (South Africa)

7. Summary of holdings of Patagonian toothfish (Dissostichus eleginoides) otoliths and size-at-age estimates from Heard and McDonald Islands (Division 58.5.2)

   Abstract:  Scientific observers aboard vessels in the Australian fisheries in 58.5.2 have ... collected Dissostichus eleginoides otoliths since the fishery commenced in the 1996/97 season. This program ... has yielded data which has assisted with understanding age structure and growth rates of toothfish in ... currently used in the assessment to predict growth and assign length-at-age to catch-at age, however an ...

   Meeting Document : WG-FSA-07/45 : Автор(ы): D.C. Welsford and G.B. Nowara (Australia)

8. Application of continuous time Markov chains to modelling animal movement: estimation of movement rates and retention times for Patagonian toothfish

   Abstract:  The study of animal movement and distribution has been a central focus in ecology since ... apply the model to estimate the equilibrium distribution of Patagonian toothfish in the region around ... the inception of the science. However, continuous-time, discrete state models have received relatively ... Heard and MacDonald Islands in the Australian Antarctic zone using to mark-recapture data from the ...

   Meeting Document : WG-FSA-SAM-06/16 : Автор(ы): C. Wilcox, M. Bravington and D. Peel (Australia)

9. Preliminary results of an age/length study of juvenile Notothenia rossii marmorata from Potter Cove, South Shetland Islands

   Islands. Results from the analysis of both structures agreed in 95.5%. Likewise, the examination of ... otolith cross sections of chosen specimens confirmed in all the cases the age readings obtained from the ... respectively, which is well in accord with the known length-age distribution of juvenile specimens of the ... species in the fjord. Mean length data at age presented here were compared with published values for ...

   Meeting Document : WG-FSA-90/09 : Автор(ы): E. Barrera-Oro and R. Casaux (Argentina)

10. STRONG EFFECTS OF ENVIRONMENTAL CONDITIONS ON REPRODUCTIVE SUCCESS OF PENGUINS AT KING GEORGE ISLAND

    variability in the reproductive success of Adélie, gentoo, and chinstrap penguins can be explained by simple ... of directional climate change on the future of reproductive success in monitored populations. Author ... ice extent measured during the winter prior to breeding also appears to be an important predictor of ... reproductive success in all species. Biological variables measured during the chick-rearing phase, like krill ...

    Meeting Document : WG-EMM-09/43 : Автор(ы): J. Hinke, C. Reiss and W. Trivelpiece (USA)

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