Résultats de la recherche

1. An interlaboratory comparison of ages estimated for Dissostichus eleginoides from the Argentine Sea, southwest Atlantic Ocean

   Abstract:  To examine consistency among laboratories in age estimation of Patagonian toothfish and ... 124 fishes caughts in Argentine Sea (South West Atlantic) Ages were estimated by readers from National ... a clearer section. More hyaline bands were visible in the NIWA preparations, particularly near the ... otoliths could not be classified as easy to read, the clarity of their zones is quite similar in the South ...

   Meeting Document : WG-FSA-04/45 : Auteur(s): M.C. Cassia (Argentina), P.L. Horn (New Zealand) and J.R. Ashford (USA)

2. An ecosystem-based approach to management: using individual behaviour to predict the indirect effects of Antarctic krill fisheries on penguin foraging

   Abstract:  1. Changes in species’ abundance and distributions caused by human disturbances can ... have indirect effects on other species in a community. Although ecosystem approaches to management are ... conditions on these interactions. In this study, we extended a behavioural model used previously to ... penguin foraging success and behaviour in adjacent breeding sites. 3. Increased fishing pressure offshore ...

   Meeting Document : WG-EMM-03/34 : Auteur(s): S.H. Alonzo, P.V. Switzer and M. Mangel (USA)

3. Defining predator foraging ranges, illustrated using Adélie penguin foraging tracks from Mawson coast

   taking into account interannual variation in foraging locations? This paper considers the issues to be ... addressed in answering that question. The proposed method for defining foraging ranges is based on an ... effort and this is used to delineate a feeding ground for Adélie penguins on the Mawson coast in eastern ... these foraging ranges for the purposes of small-scale management units may need to be examined in three ...

   Meeting Document : WG-EMM-02/41 : Auteur(s): I.R. Ball, A.J. Constable, J. Clarke and L. Emmerson (Australia)

4. Short note: time series of Drake Passage Oscillation Index (DPOI) from 1952 to 1988

   Abstract:  Naganobu et al. (1999) had assessed variability in krill recruitment and density with ... differences across the Drake Passage, sea ice cover and chlorophyll-a in the Antarctic Peninsula area during ... westerlies were especially regarded as a key environmental index. Fluctuations in the westerlies across the ... variability. High DPOI periods, not less than 16 hPa, were mostly observed in the period before 1964 and only ...

   Meeting Document : WG-EMM-02/44 : Auteur(s): M. Naganobu and K. Kutsuwada (Japan)

5. Predation on fish by the southern elephant seal, Mirounga leonina, at King George Island, South Shetland Islands, as reflected by stomach lavage

   , were stomach lavaged at King George Island in order to analyse their diet. The two major prey types ... were cephalopods and fish which ocurred respectively in 98,1% and 14% of stomachs containing prey ... nicholsi which constituted in number 69% of the otoliths found. This species was followed by the ... nototheniid Pleuragramma antarcticum which represented 11,7% in number and 31,3% in frequency of occurrence ...

   Meeting Document : WG-EMM-01/58 : Auteur(s): G.A. Daneri and A.R. Carlini (Argentina)

6. PREDICTING SPECIES DISTRIBUTIONS FROM MUSEUM AND HERBARIUM RECORDS USING MULTI-RESPONSE MODELS FITTED WITH MULTIVARIATE ADAPTIVE REGRESSION SPLINES

   methods for using these data. Such methods must, in particular, accommodate the difficulties caused by ... models (GAMs) that are commonly and successfully used in modelling species distributions, but has ... particular advantages in its analytical speed and the ease of transfer of analysis results to other ... dominant environmental drivers of variation in species composition. We use data from 226 species from six ...

   Meeting Document : WS-VME-09/P02 : Auteur(s): Elith, J., Leathwick, J.

7. Population demography of Antarctic fur seals: the costs of reproduction and implications for life-histories

   Abstract:  1. This study examined the costs of reproduction in terms of future survival and ... reproduction in female Antarctic fur seals from Bird Island, South Georgia. It used mark-recapture data from 11 ... . 2. Population age structures were used, in conjuction with the measured age-specific survival rates ... result of pregnancy which accounted for 40–50% of adult female mortality. This effect was greatest in the ...

   Meeting Document : WG-EMM-95/26 : Auteur(s): Reid, K., Croxall, J.P., Lunn, N.J., Boyd, I.L.

8. Developing a Ross Sea region medium-term data collection plan

   Abstract:  Data are collected for use in scientific research, the results of which are used to ... , prevention of changes or minimisation of the risk of changes in the marine ecosystem which are not ... of Antarctic marine living resources. Based on these goals and previous experience in the fishery ... , proposed medium term research objectives for the Ross Sea fishery for the next 5–7 years were developed in ...

   Meeting Document : WG-FSA-10/32 : Auteur(s): S. Mormede and S. Hanchet (New Zealand)

9. Fisheries risks to the population viability of black petrel (Procellaria parkinsoni)

   1.2% and 3.1% per year. Mark-recapture data were useful in estimating demographic parameters, like ... spend an average of 1.2 y in the colony as pre-breeders, with only 3% skipping the pre-breeder phase. Of ... birds that appear in the study area as pre-breeders and survive to breed, only 68% do so in the study ... well determined because we can’t distinguish mortality from emigration (birds that breed in an area ...

   Meeting Document : WG-SAM-10/P01 : Auteur(s): R.I.C.C. Francis and E.A. Bell (New Zealand)

10. Informing and seeking advice from WG-SAM-18 about the revisions of the WSMPA proposal

    in the Weddell Sea (WSMPA) to CCAMLR 2016, Germany has carried out further work on the WSMPA proposal ... ; Adjustment of the habitat of adult Antarctic toothfish in statistical areas 48.6 and 48.5 as a result of ... reference areas in statistical subarea 48.6 for monitoring the effects of harvesting on Antarctic marine ... the fisheries research zone (FRZ) foreseen in the draft WSMPA Conservation Measure and the ...

    Meeting Document : WG-SAM-18/16 : Auteur(s): S. Hain, K. Teschke, H. Pehlke and T. Brey

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