Search results
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Fishing and conservation in southern waters
Abstract: Fishing in the Southern Ocean commenced on finfish in 1969/70 and on krill in 1972/73 ... in fragments of discarded or lost fishing gear. Most fish stocks had already been over-exploited before ... scientific observation in 1992. It is too early to judge the efficacy of these enforcement and data gathering ... Fishing in the Southern Ocean commenced on finfish in 1969/70 and on krill in 1972/73. The former ...
Meeting Document : SC-CAMLR-XII/BG/11 : Author(s): Delegation of Germany
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The winter distribution of Adélie and chinstrap penguins from two breeding colonies in the South Shetland Islands of Antarctica
to the Elephant Island area and spent the next 4-5 months continuing to the East. This bird’s signal was lost just ... to the Elephant Island area and spent the next 4-5 months continuing to the East. This bird’s signal was lost just ... with satellite tags in early March 2000, following their annual molt; similarly, two birds were tagged in late ... from mid-February to early April 2001, following their molt in the KGI breeding colony. All individuals ...
Meeting Document : WG-EMM-02/55 : Author(s): S.G. Trivelpiece and W.Z. Trivelpiece (USA)
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Tooth growth in male Antarctic fur seals (Arctocephalus gazella) from South Georgia: an indicator of long-term growth history
an indication of body growth, Tooth growth rate was lowest in seals which died early (age 4 years) and increased ... mature early also died early. Tooth growth layers deposited in each calendar year were compared ... an indication of body growth, Tooth growth rate was lowest in seals which died early (age 4 years) and increased ... mature early also died early. Tooth growth layers deposited in each calendar year were compared ...
Meeting Document : WG-CEMP-93/11 : Author(s): I.L. Boyd and J.P. Roberts (United Kingdom)
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Interactions between cetaceans and fisheries in Southern Ocean
only occasionally and one whale (presumably a minke whale) died. Author(s): K.-H. Kock (Germany ... occasionally and one whale (presumably a minke whale) died. ... . Sperm whales became frequently entangled in the line and part of the line was lost in a number of cases ... became frequently entangled in the line and part of the line was lost in a number of cases. Other ...
Meeting Document : WG-FSA-05/11 : Author(s): K.-H. Kock (Germany), M. Purves (South Africa) and G. Duhamel (France)
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A three-frequency method to determine the abundance and the size of two euphausiid species (Euphausia superba and Euphausia crystallorophias)
role in the Ross Sea pelagic ecosystem (Marr, 1962; Azzali et al., 1999). To estimate the abundance ... and to the net avoidance (Wiebe, 1972; Everson and Bone, 1986). This last bias affects particularity the hauls ... in the Ross Sea pelagic ecosystem (Marr, 1962; Azzali et al., 1999). To estimate the abundance of each stock ... uncertainties of net samplings arise due to the selectivity of the net and to the net avoidance (Wiebe, 1972 ...
Meeting Document : WG-EMM-01/63 : Author(s): M. Azzali, J. Kalinowksi, G. Lanciani and I. Leonori (Italy)
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Foraging trip duration in male and female macaroni penguins at Bouvetøya
Abstract: The CEMP Standard Methods for monitoring foraging trip duration in Macaroni Penguins ... , while the females make frequent foraging trips. We analysed data from 17 males instrumented with VHF ... -transmitters in the middle of the brooding period (chick age 12-18 days) and 17 females instrumented ... at the start of the creching period (chick age 25-30 days). Males made their first foraging trips at the start ...
Meeting Document : WG-EMM-98/28 : Author(s): F. Mehlum, K. Isaksen and V. Bakken (Norway)
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Foraging energetics of Antarctic fur seals in relation to changes in prey availability
at parturition in 1984, and both pup mortality and the proportion of pups that died from starvation were double ... and the proportion of pups that died from starvation were double the 1985 values. Female condition at parturition ... seal foraging trips were twice as long in 1984 as in 1985 and total mass-specific energy expended ... by females during these trips was significantly greater. In addition, females were significantly lighter ...
Meeting Document : SC-CAMLR-VIII/BG/13 : Author(s): Delegation of United Kingdom
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Measurements of fish school velocities with an acoustic Doppler current profiler
Abstract: Horizontal and vertical velocities of fish schools were measured using an acoustic ... Doppler current profiler (ADCP). To determine three orthogonal velocity vectors (east, north, and vertical ... ), it was required that the four ADCP beams simultaneously insonified a fish school, in the same depth bin. Velocity ... school velocities with an acoustic Doppler current profiler Approval: Approved ...
Meeting Document : WG-EMM-96/41 : Author(s): Demer, D.A.
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Decadal trends in abundance, size and condition of Antarctic toothfish in McMurdo Sound, Antarctica, 1972–2011
for Dissostichus mawsoni in McMurdo Sound, Antarctica, 1972–2011. Data on total length, condition and catch per ... for the Ross Sea shelf. Fish length and condition increased from the early 1970s to the early 1990s ... and then decreased. Fish length positively correlated with Ross Sea ice extent in early spring, a relationship ... of Antarctic toothfish in McMurdo Sound, Antarctica, 1972–2011 Approval: Approved ...
Meeting Document : WG-FSA-12/P04 : Author(s): D.G Ainley, N. Nur, J.T Eastman, G. Ballard, C.L Parkinson, C.W Evans and A.L. DeVries
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Cetaceans as indicators of historical and current changes in the East Antarctica ecosystem
in the East Antarctica ecosystem in the context of two hypotheses, the ‘krill surplus’ hypothesis ... in the middle of the past century and the recovery of krill-eater large whales since the 1980 ... whale, which had not been exploited on a large scale. A review of the scientific information in East ... Antarctica (70°E-170°W) showed that the increased krill availability in the middle of the past century could ...
Meeting Document : WG-EMM-16/64 : Author(s): Y. Fujise and L.A. Pastene