Resultados de la búsqueda
-
ASSESSMENT OF PATAGONIAN TOOTHFISH POPULATION IN THE NORTH OF SUBAREA 48.4 USING DATA FROM A FOUR-YEAR TAGGING EXPERIMENT
Abstract: 1. The bycatch TAC of 12 tonnes of macrourids was reached in 2008/09 triggering the ... in 2008/09, slightly under the target of 375 for the full 75 tonnes of catch; 3. There were 29 D ... . eleginoides tag returns in 2008/09, bringing the total from all seasons up to 54 tag recaptures; 4. A total of ... 12 D. mawsoni and 269 rajids were tagged in all seasons combined though none were recaptured; 5 ...
Meeting Document : WG-FSA-09/17 : Autor(es): J. Roberts and D.J. Agnew (United Kingdom)
-
DEFINING TAG RATES AND TACS TO OBTAIN SUITABLY PRECISE ABUNDANCE ESTIMATES FOR NEW AND EXPLORATORY FISHERIES IN THE CCAMLR CONVENTION AREA
catches (TACs) that would be expected to yield a pre-specified precision in a resultant abundance estimate ... formula that gives the expected coefficient of variation of the abundance estimate in terms of the number ... of releases and recaptures, which can in turn be expressed in terms of the tagging rate per tonne ... be extremely useful in terms of defining suitable catch levels and tagging rates required to obtain a ...
Meeting Document : WG-SAM-08/06 : Autor(es): R.M. Hillary (UK)
-
Variation in echosounder calibration with temperature and some possible implications for acoustic surveys of krill biomass
krill surveys, and exhibits acceptable temporal stability in system gain settings. Between Antarctic ... seasons, this echo-sounder has additionally been calibrated in temperate European waters and, under these ... conditions, calibrated gain settings differ markedly from those applied in the Antarctic, even after ... appropriate adjustments for differences in sound speed between locations have been made. Here we present ...
Meeting Document : WG-EMM-97/52 : Autor(es): Watkins, J.L., Woodroffe, P., Brierley, A.S., Goss, C.
-
Entanglement of Antarctic fur seals Arctocephalus gazella in man-made debris at Bird Island, South Georgia during the 1993 winter and 1993/94 pup-rearing season
Abstract: Surveys of Antarctic fur seals entangled in man-made marine debris were carried out for ... the fourth consecutive winter and sixth consecutive summer at Bird Island, South Georgia. In the 1993 ... in 1990 and 1991. Nearly all animals were juveniles, half with severe injuries and the proportion of ... females (40%) was the highest yet reported. The proportion of animals entangled in packaging bands was the ...
Meeting Document : SC-CAMLR-XIII/BG/03 : Autor(es): Delegation of United Kingdom
-
Krill (Euphausia superba) distribution in relation to water movement and phytoplankton distribution off the northern South Shetland Islands
Abstract: The waters in the vicinity of the South Shetland Islands and Elephant Island were ... biomass of krill in the 1990/91 austral summer. Main krill concentrations occurred in the shelf waters ... frequently occur), have elucidated the occurrence of convergent complex eddies in these shelf waters. (Note ... is that one buoy traveled all the way to South Georgia and has been being trapped in a winter fishing ...
Meeting Document : WG-KRILL-91/22 : Autor(es): Delegation of Japan
-
Distribution and size-age composition of Antarctic krill in the South Orkney Islands region (CCAMLR Subarea 48.2)
(Euphausia superba) in commercial catches by Russian trawler ' Maxim Starostin ' in the South ... Orkney region (Subarea 48.2). The fishery operations were conducted between January and March in 2008 ... in anomalous cold 2009/2010 season significant proportion of krill of cohort 2+ skipped spawning ... . Individuals of Antarctic krill in age 1+ were absent in catches in both 2008/2009 and 2009/2010 seasons ...
Meeting Document : WG-EMM-10/16 : Autor(es): D.O. Sologub and A.V. Remeslo (Russia)
-
Modelling growth and reproduction of Antarctic krill: implications of spatial and temporal trends in temperature and food for ecosystem-based management of krill fisheries
Abstract: Errors in the growth model used in stock assessments of Antarctic krill, specifically ... higher rates of growth than occur in reality, could inadvertantly lead to over-exploitation of the krill ... generally applied under spatially and temporally varying conditions. In the context of assessments of ... precautionary yield for krill in CCAMLR, we recommend that this new model be incorporated into those assessments ...
Meeting Document : WG-EMM-12/38 : Autor(es): A.J. Constable and S. Kawaguchi (Australia)
-
Proposal for a SCOR Working Group to identify Ecosystem Essential Ocean Variables for measuring change in the biological properties of marine ecosystems
for measuring change in the biological properties of marine ecosystems” was developed by members of ... the Southern Ocean Observing System (SOOS) Science Steering Committee in conjuction with discussions ... for linking a number of groups working on this issue, leading to a symposium in 2016. The proposal is ... detailed in this paper. It is recommended that the Scientific Committee of CCAMLR become involved in this ...
Meeting Document : WG-EMM-12/45 : Autor(es): A. Constable (Australia)
-
Population assessment of Patagonian toothfish in Subarea 48.4
Abstract: This paper presents an update of the assessment of toothfish (Dissostichus spp.) in ... D. eleginoides in the northern region and a simple Petersen biomass estimate derived for D ... . eleginoides and D. mawsoni in the southern region. The CASAL model structure used to assess the stock in 2011 ... tonnes and B 2012 /B 0 at around 88%. Sustainable yield, calculated in accordance with the CCAMLR ...
Meeting Document : WG-FSA-12/36 : Autor(es): R. Scott (United Kingdom)
-
Revised diet composition and feeding strategy of Antarctic toothfish, Dissostichus mawsoni in SSRU 58.4.1.C-a for the 2012/2013 Korean exploratory longline fishery
Abstract: Stocks of Dissostichus mawsoni in Division 58.4.1 were vulnerable with a big range of ... about 1,000-2,000 t per SSRU in Division 58.4.1. However, there is not enough data and information to ... toothfish, Dissostichus mawsoni in SSRU 58.4.1.C-a as a part of Korean research plan for the exploratory ... longline fishery for Dissostichus spp. in SSRUs of 58.4.1 C and E during 2012/2013 season. This study was ...
Meeting Document : WG-FSA-13/43 : Autor(es): I. Yeon, Y.J. Kwon, S.G. Choi, K.J. Seok, D.W. Lee, J.M. Jeong, S.J. Ye, H.J. Kim and G.W. Baeck (Republic of Korea)