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1. 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 : Автор(ы): M. Antolos, A.K. Miller and W.Z. Trivelpiece (USA)

2. 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 : Автор(ы): L. Emmerson and C. Southwell (Australia)

3. 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 : Автор(ы): E.S.W. Leung, R.A. Orben and W.Z. Trivelpiece (USA)

4. 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 : Автор(ы): E. Abraham and J. Pierre (New Zealand)

5. 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 : Автор(ы): Hillary, R.M., C.T.T. Edwards, R.E. Mitchell and D.J. Agnew

6. 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 : Автор(ы): Everson, I. and S. Campbell

7. 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 : Автор(ы): 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

8. Seabird interactions with longlining operations for Dissostichus eleginoides at the South Sandwich Islands and South Georgia

   Paper Title:  Seabird interactions with longlining operations for Dissostichus eleginoides at the ... South Sandwich Islands and South Georgia Abstract / Description:  During seven days of operations ... involving the setting and hauling of longlines to catch the toothfish Dissostichus eleginoides around the ... increased rapidly after dawn and large numbers of Cape, giant and storm petrels and smaller numbers of white ... baited hooks, reduction of lights at night, and avoidance of the dumping of offal during longline ... on the starboard side of the vessel. Incoming fish were gaffed to prevent escape at the surface ... two hatches at the stern of the ship, where each coil was paid out after being weighted and tied to ... vicinity of the ship was recorded every 30 minutes. Almost all setting took place at night. The ship's ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 143–153 : Автор(ы): Ashford, J.R., J.P. Croxall, P.S. Rubilar and C.A. Moreno

9. Killer whale (Orcinus orca) and sperm whale (Physeter macrocephalus) interactions with longline vessels in the Patagonian toothfish fishery at South Georgia, South Atlantic

   with longline vessels in the Patagonian toothfish fishery at South Georgia, South Atlantic Abstract ... fishing operations were recorded by CCAMLR observers between 2000 and 2002 at South Georgia (Subarea 48.3 ... ). Demersal longlines, targeting Patagonian toothfish (Dissostichus eleginoides), were deployed in depths of ... most abundant marine mammal observed in the vicinity of vessels when lines were being hauled, being ... the Ross Sea at 78°S (Rice, 1998). Killer whales generally feed on a wide range of prey, and in the ... observations of killer whales and sperm whales interacting with longline vessels at the Falkland/Malvinas ... fi sh- ery at South Georgia ranged in length from 44 to 59 m (mean = 53 m), with a GRT of between ... at random intervals in order to cover as much as possible of the period when lines were being ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 111–126 : Автор(ы): Purves, M.G., D.J. Agnew, E. Balguerías, C.A. Moreno and B. Watkins

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

    Paper Title:  Length-at-age in juvenile Patagonian toothfish (Dissostichus eleginoides) Abstract ... / Description:  We used the otoliths from a sample of Dissostichus eleginoides pre-recruits, whose length ... estimated from reading otoliths in a goodness-of-fit test. The majority of the otoliths (83.6%) were ... estimated to be from fish 1+ or 2+ years old, with mean total lengths of 32.5 cm and 41.3 cm respectively ... discussion at WG-FSA indicated that there was a clear need for validation of the age of individual fi sh ... survey. From the resulting age-at- length matrix the proportions of the population at each age ... , indicating a delay of several months in the formation of the opaque zone at South Georgia. If this is ... . At present, fi sh showing the fi rst translucent zone on the edge of the nucleus in January are con ...

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

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