Résultats de la recherche
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Status of the Polish FIBEX acoustic data from the West Atlantic
Paper Title: Status of the Polish FIBEX acoustic data from the West Atlantic Abstract ... / Description: Acoustic data from the Polish FIBEX survey in the West Atlantic were analysed using recent ... acoustic target strength estimates of krill (SC-CAMLR, 1991a). This analysis indicated that the acoustic ... densities of krill in the oceanic parts of the Drake Passage were low (3 g m-2); however, the results also ... STATUS OF THE POLISH FIBEX ACOUSTIC DATA FROM THE WEST ATLANTIC P.N. Trathan British Antarctic Survey ... , Madingley Road Cambridge CB3 OET, United Kingdom Abstract Acoustic data from the Polish FIBEX survey in ... the West Atlantic were analysed using recent acoustic target strength estimates of krill (SC-CAMLR ... , 1991a). This analysis indicated that the acoustic densities of hi l l in the oceanic parts of the ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 125–132 : Auteur(s): Trathan, P.N., J. Kalinowski and I. Everson
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Some aspects of the relation between Antarctic krill abundance and CPUE measures in the Japanese krill fishery
Paper Title: Some aspects of the relation between Antarctic krill abundance and CPUE measures in ... the Japanese krill fishery Abstract / Description: The history of the Japanese krill fishery is ... reviewed briefly. Important aspects of the fishing operation are the constraints imposed by processing rate ... limitations on the vessels, and product quality considerations- in particular the increasing tendency to avoid ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 109–125 : Auteur(s): Butterworth, D.S.
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Timing of clutch initiation in Pygoscelis penguins on the Antarctic Peninsula: towards an improved understanding of off-peak census correction factors
dates for four penguin breeding sites are examined (Cape Shirreff, Admiralty Bay, Humble Island and ... Paper Title: Timing of clutch initiation in Pygoscelis penguins on the Antarctic Peninsula ... censuses on the Antarctic Peninsula are often subject to logistical challenges that preclude nest counts ... being conducted at the peak of egg laying. Additionally, the historical literature includes many census ... latitude of site j relative to the latitude of Admiralty Bay, King George Island (the most northerly of ... the study sites), Oct.meanj,t is the mean October temperature of site j in year t, and yeart is ... information relevant to an estimation of the number of breed- ing pairs at a particular site, including the ... Site Inventory (Naveen et al., 2000; Lynch et al., 2008). The Antarctic Site Inventory program, which ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 149–165 : Auteur(s): Lynch, H.J., W.F. Fagan, R. Naveen, S.G. Trivelpiece and W.Z. Trivelpiece
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Remarks on the natural mortality of Dissostichus eleginoides in Subarea 48.3
: fishing site, fishing depth and hook type. It was determined that there were no significant differences in ... curve hooks No. 14 and straight hooks No. 22. The general mean value of M calculated for the 44 analysed ... differences in M between fishing sites. On the other hand, when comparing various mean values of M for the ... Paper Title: Remarks on the natural mortality of Dissostichus eleginoides in Subarea 48.3 ... straight hooks No. 22. The general mean value of M calculated for the 44 analysed situations was 0.14 ... sites. On the other hand, when comparing various mean values of M for the different cases, it was ... found that there were significant differences between fishing sites and between curve hooks No. 14 and ... ) of Dissostichus eleginoides was calculated after Sparre (1989) from the data obtained during the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 21–30 : Auteur(s): Moreno, C.A. and P.S. Rubilar
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Breeding numbers and success of Eudyptes penguins at Marion Island, and the influence of mass and time of arrival of adults
Oscillation event of 1997/98, there was no significant correlation in mass on arrival between the two species ... Paper Title: Breeding numbers and success of Eudyptes penguins at Marion Island, and the ... , there was substantial correlation in the numbers of adults breeding at study colonies of macaroni ... filholi) over 22 years, suggesting that overwintering conditions may influence the proportions of birds ... Oscillation event of 1997/98, there was no significant correlation in mass on arrival between the two species ... Archway Bay, at the northeast of Marion Island (Figure 1), in each sea- son from 1979/80 to 2004/05, as ... < 0.001) and Archway Bay (r = 0.721, n = 26, P < 0.001). There was no significant relationship between ... the num- bers breeding at Macaroni Bay and Archway Bay (r = 0.235, n = 26). In 1982/83, there were ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 175–190 : Auteur(s): Crawford, R.J.M., B.M. Dyer, J. Cooper and L.G. Underhill
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Prey monitoring surveys: a discussion of the characteristics necessary in prey surveys
Paper Title: Prey monitoring surveys: a discussion of the characteristics necessary in prey ... surveys Abstract / Description: The CCAMLR Ecosystem Monitoring Programme requires information on prey ... distribution to relate to changes in predator demography. The paper discusses the constraints imposed on such ... site as a primary monitoring site. The sea areas close to the remalnlng sites are relatively free ... the centre then prey surveys covering a radius of 100 km from the site should provide adequate ... with chick weight at fledging. c. Prydz Bay It is not clear from the Report of the Working Group ... investigating water circulation and the krill distribution outside this primary survey region. No account has ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 377-391 : Auteur(s): Everson, I.
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Trends in relative abundance of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps at Potter Cove, South Shetland Islands, after commercial fishing in the area
Abstract / Description: Monitoring of demersal fish at inshore sites of the South Shetland Islands has ... and Notothenia coriiceps at Potter Cove, South Shetland Islands, after commercial fishing in the area ... continued at Potter Cove from 1991 to 1999, and at Harmony Cove, Nelson Island, in the austral summer of ... 1995/96. Still evident is the decline in trammel-net catches of fjord-dwelling Notothenia rossii and ... two sites of the South Shetland Islands: Potter Cove (King George Island) and Moon Bay (Livingston ... length range of G. gibberifrons (13-35.5 cm) caught at PC (no catches at HC) indicates the presence of ... inshore locations of the South Shetland Islands area, i.e. Admiralty Bay (Skora, 1993) and Fildes Bay ... (Moreno and Bahamonde, 1975), and Discovery Bay on Greenwich Island (Moreno and Bahamonde, 1975). The ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 43–52 : Auteur(s): Barrera-Oro, E.R., E.R. Marschoff and R.J. Casaux
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Surface water circulation in krill fishing areas near the South Shetland Islands
Paper Title: Surface water circulation in krill fishing areas near the South Shetland Islands ... deployed in shelf and oceanic waters to the north of the South Shetland Islands. Each buoy was deployed ... with a drogue attached at a depth of 30 m to assess flow patterns at the depth range where krill tended ... to be most abundant. The buoys were tracked using the ARGOS satellite positioning system. Based on ... then reversed its direction to west and became trapped in Barclay Bay on the northern side of ... where there is no successful krill spawning and that the stocks there rely on recruitment from the ... study shows no evidence for a loop drift, i.e. a drift which would lead to the Scotia Sea containing a ... SURFACE WATER CIRCULATION IN KRILL FISHING AREAS NEAR THE SOUTH SHETLAND ISLANDS T. Ichii and M ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 125–136 : Auteur(s): Ichii, T. and M. Naganobu
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Krill (Euphausia superba) distribution in relation to water movement and phytoplankton distribution off the northern South Shetland Islands
phytoplankton distribution off the northern South Shetland Islands Abstract / Description: In December/February ... 1990/91 a survey was conducted by RV Kaiyo Maru in the vicinity of the South Shetland Islands and ... Elephant Island. The main objective of the survey was to investigate the mechanisms responsible for the ... concentration of krill and to estimate krill biomass in the area surveyed. Krill biomass estimation was done by ... in the shelf area moved east, then reversed and was trapped in Barclay Bay on the northern side of ... eddies may provide some spatially-stable sites for retention of krill swarms, leading to the formation ... IN RELATION TO WATER MOVEMENT AND PHYTOPLANKTON DISTRIBUTION OFF THE NORTHERN SOUTH SHETLAND ... conducted by RV Kaiyo Maru in the vicinity of the South Shetland Islands and Elephant Island. The main ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 123–140 : Auteur(s): Ichii, T., H. Ishii and M. Naganobu
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Distribution and relative abundance of Antarctic toothfish (Dissostichus mawsoni) on the Ross Sea shelf
Terra Nova Bay, Ross Island, and in the south of small-scale research unit (SSRU) 881L (adjacent to the ... available, there is no evidence for a northward contraction in the range of D. mawsoni over the course of ... the Ross Sea shelf Abstract / Description: This paper summarises knowledge of the distribution and ... relative abundance of Antarctic toothfish (Dissostichus mawsoni) on the Ross Sea shelf (defined here as the ... conflicting trends with a decline between 2006 and 2008 at Terra Nova Bay, no obvious change at the Ross ... Nova Bay, Ross Island, and in the south of small-scale research unit (SSRU) 881L (adjacent to the Ross ... fisheries data available, there is no evidence for a northward contraction in the range of D. mawsoni over ... grounds including the deep trough off Terra Nova Bay in SSRU 881M, the deep area to the northeast of ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 33–51 : Auteur(s): Hanchet, S.M., S. Mormede and A. Dunn