Search results
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THE SELECTION OF TRIPS BASED ON DATA METRICS FOR THE ASSESSMENT OF ANTARCTIC TOOTHFISH IN THE ROSS SEA
) in the Ross Sea Region was selected on the basis of data quality metrics for individual trips. Initial ... informative datasets were selected comprising trips with high (above median) rates of recovery of previously ... released tags, and/or where tags released on the trip were subsequently recaptured at a high rate ... . These trips were used to define a range for various data quality metrics considered to be informative ...
Meeting Document : WG-FSA-09/35 : Author(s): D.A.J. Middleton (New Zealand)
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Foraging range and at-sea locations of female Antarctic fur seals, Cape Shirreff, Livingston Island, from 1999–2002
95 females with ARGOS satellite-linked transmitters prior to departures on foraging trips from late ... positions that required females to travel >4m/sec. Foraging trip lengths averaged 4.0 days (SE±0.11 ... ). The mean range traveled offshore was 83.3km (SE?2.9) and the maximum distance was 369.1km. Foraging trip ... 95 females with ARGOS satellite-linked transmitters prior to departures on foraging trips from late ...
Meeting Document : WG-EMM-02/53 : Author(s): M.E. Goebel, S.N. Sexton and D.P. Costa (USA)
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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 ... 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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Descriptive analysis of mesopelagic backscatter from acoustic data collected in the Ross Sea
to estimate middle trophic level prey organisms (e.g., krill and mesopelagic fish) in the Ross Sea. Single ... middle trophic level prey organisms (e.g., krill and mesopelagic fish) in the Ross Sea. Single frequency ...
Meeting Document : WG-EMM-06/11 : Author(s): R.L. O’Driscoll (New Zealand)
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DEVELOPMENT OF A METHODOLOGY FOR DATA QUALITY ASSESSMENT
, and biological sampling data from a fishing trip. In particular these measures aim to quantify the prevalence ... assist in assessing which data from a trip should be used in an assessment, and can also guide how ... quality measures for other data sets to group trips on the basis of their overall data quality. Ongoing ... in the quality of particular data sets from different trips in the Ross Sea Antarctic toothfish fishery. Cluster ...
Meeting Document : WG-SAM-08/13 : Author(s): D.A.J. Middleton and A. Dunn (New Zealand)
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Do Adélie penguin fledgling weights provide an index of prey availability?
to two assumed proxies of prey availability: breeding success and foraging trip duration. Concordance ... between the two proxies was apparent when considering guard stage foraging trip durations ... but this was not as strong for the crèche foraging trips later in the season. Fledgling weights which are measured at the end ... of the breeding season were more strongly correlated with later foraging trips than with earlier trips. We ...
Meeting Document : WG-EMM-05/21 : Author(s): L. Emmerson, C. Southwell and J. Clarke (Australia)
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Seabird research at Cape Shirreff, Livingston Island, Antarctica, 2006/07
. The mean foraging trip duration during chick- rearing was approximately one hour longer than in 2005-06 ... in interpreting the foraging trip data. Fledgling success and chick fledging mass in 2006-07 were higher than both ... plentiful in the chinstrap penguin’s diets in the 1997-98 and 2002-03 seasons. The mean foraging trip ... trip data. Fledgling success and chick fledging mass in 2006-07 were higher than both last season ...
Meeting Document : WG-EMM-07/P1 : Author(s): R. Orben, S. Chisholm, A. Miller and W.Z. Trivelpiece (USA)
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Diet and foraging effort of Adélie penguins in relation to pack-ice conditions in the southern Ross Sea
was sparse. Foraging trip duration differed by colony, season and year and was related directly to distance ... from the colony to the nearest pack ice. The amount of food brought to chicks increased as trip ... to 4 d). On the basis of data on mass of parents and of meal sizes to chicks, it appeared that on longest trips more ... of the food gathered by parents was used for self maintenance; on longest trips, parents lost body mass ...
Meeting Document : WG-EMM-98/15 : Author(s): D.G. Ainley (USA), P.R. Wilson, K.J. Barton (New Zealand), G. Ballard, N. Nur (USA) and B. Karl (New Zealand)
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Adélie penguin foraging behaviour and breeding success in seasons of contrasting krill availability (Mawson Coast, Antarctica)
differences between the two seasons included A5: foraging trip duration, A6: breeding success and A8: meal ... on meal mass and foraging trip duration were combined to provide an index of provisioning rate, analogous ... the two seasons included A5: foraging trip duration, A6: breeding success and A8: meal mass and dietary ... and foraging trip duration were combined to provide an index of provisioning rate, analogous to the functional ...
Meeting Document : WG-EMM-03/44 : Author(s): J. Clarke, M. Tierney, S. Candy, S. Nicol, L. Irvine and K. Kerry (Australia)
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INTERACTIONS OF PATAGONIAN TOOTHFISH FISHERIES WITH KILLER AND SPERM WHALES IN CROZET EXCLUSIVE ECONOMIC ZONE: AN ASSESSMENT OF DEPREDATION LEVELS AND INSIGHTS ON POSSIBLE MITIGATION SOLUTIONS
this 5 year period we estimated a total loss of 1200 tons of Patagonian toothfish due to depredation which ... represents a financial loss of approximately 10 millions €. Killer whales were found to be responsible ... for the largest part of this loss (70%) while sperm whales had a lower impact (30%). Photo-identification data ... % and 23.4% of the 4289 lines hauled out over this period. Over this 5 year period we estimated a total loss ...
Meeting Document : WG-IMAF-09/12 : Author(s): P. Tixier, N. Gasco, G. Duhamel and C. Guinet (France)