Search results
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IMPROVING ESTIMATES OF ADÉLIE PENGUIN BREEDING POPULATION SIZE: DEVELOPING FACTORS TO ADJUST ONE-OFF POPULATION COUNTS FOR AVAILABILITY BIAS
Abstract: It is widely recognised that the interpretation of counts of penguin populations at ... the collection of adjustment data. This was recognised at the recent Predator Survey workshop, where ... season at which they are undertaken. While the need to adjust raw penguin count data obtained at varying ... times within a breeding season to minimise bias in estimates of the breeding population has long been ...
Meeting Document : WG-EMM-09/38 : Author(s): C. Southwell, J. McKinlay, L. Emmerson, R. Trebilco and K. Newbery (Australia)
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Revision of biological and population parameters for Dissostichus eleginoides on the Heard Island Plateau (Division 58.5.2) based on a comprehensive survey of fishing grounds and recruitment areas in the region
of Dissostichus eleginoides at Heard Island in the southern Indian Ocean and South Georgia Island in ... slower growing than those at South Georgia. This raises questions as to the appropriateness of the ... current range of natural mortality used in the assessment of yield at Heard Island. The revised estimates ... of recruitment indicate that the variability of recruitment at Heard Island is much greater than ...
Meeting Document : WG-FSA-99/68 : Author(s): A.J. Constable, R. Williams, T. Lamb and E. van Wijk (Australia)
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Escapement of elephant seal prey in the Heard Island fishery for Dissostichus eleginoides
of 3800 tonnes. Of 21 otoliths found in Elephant Seal stomachs at Heard Island that have previously ... these otoliths. The importance of Dissostichus eleginoides as prey of the Elephant seals at Heard Island ... Abstract: The Patagonian toothfish, Dissostichus eleginoides, has been reported as prey of ... Elephant seals in the Heard Island region. A question was raised at SC-CAMLR-XV concerning what affect the ...
Meeting Document : WG-EMM-97/42 : Author(s): Slip, D., Constable, A.J., de la Mare, W.K., Williams, R.
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Linking acoustic scattering coefficient to krill fishery data: feasibility of estimating krill abundance using fishing survey
thinner than that at night. At the depth of over 100 m, the average NASC during the daytime is higher than ... ecosystems and supports different levels of predators. It is also an important economic species for Antarctic ... between the acoustic scattering coefficient of krill swarms and catch, catch per unit effort (CPUE), catch ... per unit fishing area (CPUA) were studied for better understanding the feasibility of assessing krill ...
Meeting Document : WG-EMM-17/44 : Author(s): T. Wang, G.P. Zhu, J.F. Tong and L.X. Xu
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Comparative biological characteristics of Electrona carlsbergi (Tåning) (Myctophidae) from the notal and Antarctic areas in the Southern Ocean Atlantic sector
analysed were at age 2 to the west of 35°W and 3 yr old specimens, the portion of which made up to 40% in ... fish at age 1+ (to 75%) being noted in separate catches. Essential distinctions in a nature of the ... somewhat higher,with the highest increment being observed at the 1st and 2nd years of life. Limiting age ... become mature at the 3rd year of life at 85-89 mm length. Determined differences of the length–age and ...
Meeting Document : WG-FSA-90/21 : Author(s): K.V. Gorchinsky, V.M. Kiseleva and A.A. Filin (USSR)
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Krill biomass and distribution variability in Subarea 48.3 in June 1991
Abstract: Temporal and spatial variability of krill distribution features was investigated at the ... statistical parameters of swarms at polygon varied insignificantly from survey to survey, while the swarm ... at polygon suggests the impulsive nature of krill enter and exit out of the polygon due to its ... velocity of krill swarms displacement corresponds to the estimated water transport velocity at the polygon ...
Meeting Document : WG-CEMP-92/35 : Author(s): S.M. Kasatkina, E.I. Timokhin, P.P. Fedulov and K.E. Shulgovskiy (Russian Federation)
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Estimates of the tag loss rates for single and double tagged toothfish (Dissostichus mawsoni) fishery in the Ross Sea
the CASAL stock assessment models from the available data. Revised estimates of the rate at which ... rate after some long period at liberty, but there was no evidence of such failure in these data for ... periods of up to six years at liberty. The loss rate for double tags had been incorrectly derived and ... Abstract: The rate at which tags are lost from tagged toothfish is an important parameter in ...
Meeting Document : WG-SAM-11/18 : Author(s): A. Dunn, M.H. Smith (New Zealand), D.J. Agnew (UK) and S. Mormede (New Zealand)
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Changes in the foraging range of Adélie penguins as the breeding season progresses
their shortest trips during the guard stage of chick rearing. An annually recurrent polyna was consistently used ... to shorter foraging trips at this time. Author(s): J. Clarke and L. Emmerson (Australia) Title: Changes ... of the breeding cycle. 2. Penguins ranged furthest north during incubation and made their shortest trips during ... to shorter foraging trips at this time. ...
Meeting Document : WG-EMM-04/57 : Author(s): J. Clarke and L. Emmerson (Australia)
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Aide memoire: Balleny Islands
that through a fully consultative process with CCAMLR partners, a new proposal which represents the best method ... that through a fully consultative process with CCAMLR partners, a new proposal which represents the best method ...
Meeting Document : WG-EMM-01/71 : Author(s): Delegation of New Zealand
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Review of CCAMLR activities on monitoring marine debris in the Convention Area
until recently. The number of debris items found has increased in the last season reported at Bird ... the debris associated with seabird colonies. The number of Antarctic fur seal entanglements at Bird ... Abstract: The current status of national surveys on monitoring of marine debris and their impact ... wood items, reached a peak in the period 1994-1996 at Bird Island and Signy Island, but have declined ...
Meeting Document : SC-CAMLR-XXIV/BG/13 : Author(s): Secretariat