Résultats de la recherche

1. 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)

2. 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)

3. 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)

4. An exact time of release and recapture stock assessment model applied to Macquarie Island Patagonian toothfish (Dissostichus eleginoides)

   estimated by incorporating a Petersen approach in a novel semi-parametric model using maximum likelihood ... released fish is assigned a length of time in the available population according to its estimated release ... abundance remaining in Aurora Trough was about 35% in the base-case model. In general, the selectivity model ... substantial decline in available abundance predicted by both models provides some evidence of large-scale ...

   Meeting Document : WG-FSA-00/43 : Auteur(s): G. Tuck, W. de la Mare, W. Hearn, R. Williams, A. Smith, X. He and A. Constable (Australia)

5. 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.

6. 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.

7. 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)

8. 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)

9. Conservation Measure Conservation Measure 178/XVIII (1999)

   Limitation of the By-catch in Statistical Division 58.5.2 in the 1999/2000 Season Area:  Division ... 58.5.2 Adopted at Meeting:  CCAMLR-XVIII Period in Force:  1999- 2000 ... Limitation of the By-catch in Statistical Division 58.5.2 in the 1999/2000 Season 1. There shall be no ... directed fishing for any species other than Dissostichus eleginoides and Champsocephalus gunnari in ... Statistical Division 58.5.2 in the 1999/2000 fishing season. 2. In directed fisheries in Statistical Division ... 58.5.2 in the 1999/2000 season, the by-catch of Channichthys rhinoceratus shall not exceed 150 tonnes ...

   Conservation Measure : 178/XVIII (1999)

10. Conservation Measure Conservation Measure 41-03 (2019)

    Limits on the fishery for Dissostichus spp. in Statistical Subarea 48.4 in the 2019/20 season Area ... :  Subarea 48.4 Species:  Dissostichus spp. Period in Force:  2019- 2020 ... ) Limits on the fishery for Dissostichus spp. in Statistical Subarea 48.4 in the 2019/20 season Species ... only. The use of all other methods of directed fishing for Dissostichus spp. in Statistical Subarea ... be closed to directed fishing for Dissostichus spp. in the 2019/20 season. Catch limit 4. The ... Dissostichus spp. in Statistical Subarea 48.4, the fishing season shall be 1 December 2019 to 30 November ...

    Conservation Measure : 41-03 (2019)

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