Search results
-
Foraging patterns in the Antarctic shag (Phalacrocorax bransfieldensis) at Harmony Point, Antarctica
reduce the extension of the foraging trips which in years of scarce food availability may no result in ... Abstract: During the 1995/96 and 1996/97 summer seasons the foraging pattern of the Antarctic ... usually foraged once a day; females early in the morning and males when their partners returned to the ... nests. During the rearing period the parents incremented the number of daily foraging trips usually ...
Meeting Document : WG-EMM-04/22 : Author(s): R. Casaux and A. Baroni (Argentina)
-
Age and growth of the Antarctic skate (Amblyraja georgiana) in the Ross Sea
provided for females, males, and both sexes combined. There was no obvious difference between the sexes, so ... caudal thorns, were used to estimate the ages of Amblyraja georgiana from the Ross Sea. Caudal thorns ... viewed with transmitted white light provided the clearest growth bands, but reading precision was low ... , producing uncertain age estimates. Furthermore, annual deposition of thorn bands has not been validated. The ...
Meeting Document : WG-FSA-04/29 : Author(s): M.P. Francis and C. Ó Maolagáin (New Zealand)
-
A review and preliminary analysis of CEMP data
at Anvers Island. As the breeding success at this site has not declined also, local redistribution could ... at this site has not declined also, local redistribution could be the cause. An examination of migration ...
Meeting Document : WG-EMM-02/7 : Author(s): Secretariat
-
Total mercury and methylmercury concentrations in Antarctic toothfish (Dissostichus mawsoni): Health risk assessment
Abstract: In the present study, the concentrations of total mercury in different organs of the ... Division 58.4.1 off the coast of Antarctica were determined. The results revealed total mercury ... concentrations of 0.165 ± 0.095 mg/kg (0.023–0.454 mg/kg) in the Antarctic toothfish. In fish muscle ... , methylmercury accounted for approximately 40% of the total mercury. In a comparison analysis, muscle and liver ...
Meeting Document : WG-FSA-17/P02 : Author(s): M. Yoon, M.-R. Jo, K.-T. Son, W.-S. Choi, S. I. Kang, S.-G. Choi, J. H. Lee and T. S. Lee
-
PROPOSAL FOR AN EXTENSION TO THE MARK–RECAPTURE EXPERIMENT TO ESTIMATE TOOTHFISH POPULATION SIZE IN THE SOUTH OF SUBAREA 48.4
no bird entanglements or mortalities were reported; 5. The UK proposes to continue the mark-recapture ... Abstract: 1. A three-year tagging study in the South of Subarea 48.4 was initiated in the 2008/09 ... fishing season with the aims of providing the data required for assessments of the population structure ... , size, movement and growth of both Dissostichus eleginoides and Dissostichus mawsoni in the South of ...
Meeting Document : WG-FSA-09/18 : Author(s): J. Roberts and D.J. Agnew (United Kingdom)
-
Potential VMEs around Elephant and the South Shetland Islands (Subarea 48.1)
in the South Shetland Islands area. High biomass densities of VME indicator taxa, meeting the 10 kg ... ascidians) such that communities of many ‘light’ VME taxa have little to no chance of meeting this criterion ... new ‘diversity threshold’ is proposed in order to protect those VME taxa that do not occur in the ... Appendix II listed Antipatharia (black coral), which in the authors’ experience has never occurred at a ...
Meeting Document : WG-EMM-12/51 : Author(s): S.J. Lockhart (USA), N. Wilson (Australia) and E. Lazo-Wasem (USA)
-
Revised outline of the dedicated krill survey for CCAMLR Division 58.4.1 during 2018/19 season by the Japanese survey vessel, Kaiyo-maru
conducted by Japanese research vessel, Kaiyo-maru. No krill biomass has been estimated in the Division since ... biomass to update B(0) in the area and (2) oceanographic observations in the area to detect long term ... changes if any. The krill survey (echosounder–EK80 and RMT) and subsequent biomass estimation will follow ... the CCAMLR standard protocol. Utility of 70 kHz in addition to 3 standard frequencies (38, 120 and 200 ...
Meeting Document : SG-ASAM-18/03 : Author(s): H. Murase, K. Abe, R. Matsukura, H. Sasaki and T. Ichii
-
Proposal for a dedicated krill survey for CCAMLR Division 58.4.1 during 2018/19 season by the Japanese survey vessel, Kaiyo-maru
Japan. No krill biomass has been estimated in the Division since 1996 when Australia carried out BROKE ... . There are two main objectives of our survey: (1) estimation of krill biomass to update B 0 in the ... division and (2) oceanographic observations in the area to detect long term changes if any. Japanese ... research vessel, Kaiyo-maru, will be used in the survey. The krill survey (echosounder and RMT) and ...
Meeting Document : WG-EMM-17/05 : Author(s): H. Murase, K. Abe, T. Ichii and A. Kawabata
-
Counts of surface-nesting seabirds breeding at Prince Edward Island, summer 2001/02
site for seabirds. Author(s): P.G. Ryan, J. Cooper, B.M. Dyer, L.G. Underhill,R.J.M. Crawford and M.N ... counts. The 2001 survey confirms that Prince Edward Island remains a globally important breeding site ...
Meeting Document : WG-EMM-03/9 : Author(s): P.G. Ryan, J. Cooper, B.M. Dyer, L.G. Underhill,R.J.M. Crawford and M.N Bester (South Africa)
-
Quantifying the escape mortality of trawl caught Antarctic krill (Euphausia superba)
Abstract: Antarctic krill (Euphausia superba) is an abundant fishery resource, the harvest levels ... of which are expected to increase. However, many of the length classes of krill can escape through ... commonly used commercial trawl mesh sizes. A vital component of the overall management of a fishery is to ... estimate the total fishing mortality and quantify the mortality rate of individuals that escape from ...
Meeting Document : WG-EMM-16/04 : Author(s): B.A. Krafft, L.A. Krag, A. Engås, S. Nordrum, I. Bruheim and B. Herrmann