Résultats de la recherche

1. Temporal variability and the interrelationships between CEMP parameters collected on Adélie penguins at Béchervaise Island

   Adélie penguins at Béchervaise Island Abstract / Description:  Temporal variability in a series of CCAMLR ... examined for Adélie penguins over a period of 12 years. Data were collected from 1990/91 to 2001/02 at ... correlation with breeding success. Results indicate that low weights of females at the time they depart after ... Béchervaise Island, Eastern Antarctica. Parameters relating to chick survival (brooding nest counts, counts of ... period were the closest trip duration measure to the time of fl edging, and resources available at that ... period of 12 years. Data were collected from 1990/91 to 2001/02 at Béchervaise Island, Eastern ... with breeding success. Results indicate that low weights of females at the time they depart after ... indicator species at a number of sites in the CCAMLR Convention Area. At the inception of CEMP a suite of ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 75–90 : Auteur(s): Emmerson, L.M., J. Clarke, K.R. Kerry and C. Southwell

2. Potential interactions between wandering albatrosses and longline fisheries for Patagonian toothfish at South Georgia

   Patagonian toothfish at South Georgia Abstract / Description:  We examine the extent of overlap between South ... that D. exulans breeding at South Georgia have a relatively low potential risk of interaction with ... through mid-May, adult birds of both sexes spend most of their time at sea over the South Georgia ... continental shelf in areas very similar to where the longline fishery operates and are therefore at serious ... , respectively. We conclude that D. exulans breeding at South Georgia have a relatively low potential risk of ... period, from March through mid-May, adult birds of both sexes spend most of their time at sea over the ... of year, when chicks need frequent feeding and one parent remains at the nest brooding or guarding ... Figure 4. This fishery operates mainly over the edge of the continental shelf at depths of around 1 000 ...

   Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 101–110 : Auteur(s): Croxall, J.P. and P.A. Prince

3. Seabird research at Cape Shirreff, Livingston Island, Antarctica, 2006/07

   Abstract:  Our tenth season of seabird research at Cape Shirreff allowed us to assess trends in ... been declining for the past seven years and is at its lowest size in the 10 years of study. Chinstrap ... lowest population size in the 10 years of census data. The number of diet samples containing fish was the ... highest ever and comparable to the first six years of the study. Unlike 2005-06, 18% of the gentoo penguin ...

   Meeting Document : WG-EMM-07/P1 : Auteur(s): R. Orben, S. Chisholm, A. Miller and W.Z. Trivelpiece (USA)

4. Seabird research at Cape Shirreff, Livingston Island, Antarctica, 2003–2004

   interpretation of the foraging trip behaviour may be clarified when we finish our analyses of the PTT derived, at ... Abstract:  The seventh consecutive season of data collection at Cape Shirreff has enabled us to ... decline over the past five years, and is at its lowest size in the past seven years of study. While the ... , penguin diet, and foraging behaviour. The chinstrap breeding population at Cape Shirreff has continued to ...

   Meeting Document : WG-EMM-04/5 : Auteur(s): M. Antolos, A.K. Miller and W.Z. Trivelpiece (USA)

5. The relationship between sea-ice cover and Adélie penguin reproductive performance at Béchervaise Island

   penguin populations through a variety of processes operating at different spatial and temporal scales. The ... various attributes of sea-ice on breeding success at Béchervaise Island. Author(s):  L. Emmerson and C ... Smith et al. (1999) conceptual model of Adélie penguin population growth incorporates the relationship ... between sea-ice and penguin populations based on data from multiple sites to predict the likely outcome of ...

   Meeting Document : WG-EMM-07/21 : Auteur(s): L. Emmerson and C. Southwell (Australia)

6. Seabird research at Cape Shirreff, Livingston Island, Antarctica, 2005/06

   Abstract:  Our ninth complete consecutive season of seabird research at Cape Shirreff allowed us ... all of the previous eight years of diet sampling; however, foraging trip durations were shorter than ... previous season and is the third lowest population size in the 10 years of census data. The chinstrap ... penguin breeding population has been declining for the Past eight years and is at its lowest size in the ...

   Meeting Document : WG-EMM-06/P1 : Auteur(s): E.S.W. Leung, R.A. Orben and W.Z. Trivelpiece (USA)

7. Mincing, mealing and batching: waste management strategies aimed at reducing seabird interactions with trawl vessels

   to a paste before it was discharged reduced the number of seabirds around the vessels. The first ... trip compared three treatments (1) mincing all waste (2) discharging unprocessed waste and (3) mealing ... was determined by counting the number of birds within a 40m-radius semi-circular sweep zone behind the ... vessel stern. Results from the first experiment showed that mincing reduced the numbers of large ...

   Meeting Document : WG-FSA-07/42 : Auteur(s): E. Abraham and J. Pierre (New Zealand)

8. Length-based assessment for mackerel icefish (Champsocephalus gunnari) at South Georgia

   population numbers-at-length. A comparison of this method and the existing age-based CMIX/GYM methodology ... Paper Title:  Length-based assessment for mackerel icefish (Champsocephalus gunnari) at South ... model (GYM) packages, which derives population numbers-at-age and projects these numbers forward under ... accurate identification of age cohorts from the survey data. In this paper a length-based approach is ... estimate of the population numbers-at-length. A comparison of this method and the existing age-based CMIX ... assessment of mackerel icefish (Champsocephalus gunnari) at South Georgia which requires the clear ... -percentile of this bootstrapped biomass, along with the CMIX-derived population density-at-age, is used to ... from the length-based method. methods Population abundance-at-length The process of estimating the ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 129–137 : Auteur(s): Hillary, R.M., C.T.T. Edwards, R.E. Mitchell and D.J. Agnew

9. Toothfish, Dissostichus eleginoides, at South Georgia

   longliner in January 1990 indicates that the fish are sexually mature and, at the time of sampling, are ... Paper Title:  Toothfish, Dissostichus eleginoides, at South Georgia Abstract / Description:  The ... Dissostichus eleginoides fishery at South Georgia has expanded greatly in recent years. It has been claimed ... , paragraph 106). Histological examination of the gonads of a small sample of fish taken from a commercial ... indicates that the fish are sexually mature and, at the time of sampling, are approaching spawning ... WG-FSA-90n TOOTHFISH, DlSSOSTICHUS ELEGINOIDES, AT ... SOUTH GEORGIA I. Everson and S. Campbell* Abstract The Dissostichus eleginoides fishery at South ... examination of the gonads of a small sample of fish taken from a commerciallongliner in January 1990 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 255–261 : Auteur(s): Everson, I. and S. Campbell

10. Significant intra-annual variability in krill distribution and abundance at South Georgia revealed by multiple acoustic surveys during 2000/01

    at the island and have shown that the timing of the acoustic survey can affect signifi cantly the ... Paper Title:  Significant intra-annual variability in krill distribution and abundance at South ... acoustic surveys of Antarctic krill (Euphausia superba) were conducted around South Georgia in the 2000/01 ... March 2001 (late-season). The surveys were the first in a newly planned five-year series of observations ... predator species, some of which breed ashore at Bird Island but forage for krill, sometimes quite widely ... surveys at the very beginning and end of the fi eld season (October and March) in addition to the main ... logistic call at South Georgia before the onset of winter. SURVEY DESIGN The survey design, adapted from ... and west survey boxes suggested that semivariance reached a plateau at a range of less than 10 km ...

    Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 71–82 : Auteur(s): Brierley, A.S., C. Goss, S.A. Grant, J.L. Watkins, K. Reid, M. Belchier, I. Everson, M.J. Jessop, V. Afanasyev and J. Robst

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