Search results
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Observation of seabirds in the Southern Ocean in 1988/89
on bird behaviour. At the end of the observation the maximum number of birds of each species sighted ... to Molodezhnaya Station (Figure 8) after which it was sporadically sighted in Prydz Bay and in the area of Mirny ... Paper Title: Observation of seabirds in the Southern Ocean in 1988/89 Abstract / Description ... : This paper examines the numerical and species distribution of birds in the sub-Antarctic area of the ... Southern Ocean to the south of 60°S. Thirty minute observations were made daily during daylight hours at 8 ... ports of call. Maps summarize the distribution of 14 bird species as well as of the individual species ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 521–542 : Author(s): Vagin, A.V. and V.V. Popov
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Distribution of krill (Euphausia superba Dana) catches in the South Shetlands and South Orkneys
. After an initially rapid expansion to 500 000 tonnes in 1981/82, the krill harvest has remained stable ... in theSubarea in December to March to total consumption for these years was 0.26 for Subarea 48.1 and 0.27 ... for determination of zones (see text) (0) and 500 and 3 000 m depth contours (start and end of the continental ... Paper Title: Distribution of krill (Euphausia superba Dana) catches in the South Shetlands and ... selected colonies of penguins distributed around the coasts of the South Shetland and South Orkney Islands ... distribution in Subarea 48.2, probably as a result of more variable hydrographic conditions. About 50% of the ... catch in Subarea 48.1 from December to March was taken within 40 km of the coast, and 90% within 80 km ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 287–303 : Author(s): Agnew, D.J.
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The utilization of seabird censuses for krill monitoring
with catch per unit effort. - 397 - To this end, 72 bird observations made during FIBEX (1981) cruise ... of a 130 spaces printer, so curves coming from different plots should be compared with caution after ... Paper Title: The utilization of seabird censuses for krill monitoring Abstract / Description ... : The possibility of using bird observations made at sea as a means of monitoring krill in the Antarctic ... krill abundance. A vector close to multi-normality was obtained, thus suggesting that refinements of the ... technique will allow the discrimination of krill levels by means of bird counts thereby providing an ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 393-425 : Author(s): Marschoff, E.R., J.G. Visbeek and L.R. Fontana
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Biogeographic patterns of benthic invertebrate megafauna on shelf areas within the Southern Ocean Atlantic sector
/longitude coordinates taken with GPS from the start to the end of bottom trawling (seabed contact ... of successional recovery after iceberg scouring events to indi- cate and define the final of four stages ... Paper Title: Biogeographic patterns of benthic invertebrate megafauna on shelf areas within the ... properties. Analysis of the benthic invertebrate megafaunal assemblages of shelf habitats within the Atlantic ... sector, from scientific survey trawl catches, reveals distributional patterns. For the northern Antarctic ... Peninsula and the South Shetland Islands, the data indicate a two-layered pattern based on standardised ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 167–192 : Author(s): Lockhart, S.J. and C.D. Jones
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Diet study of Antarctic toothfish caught in the east Antarctic based on stomach content, fatty acid and stable isotope analyses
, these were preserved by freezing immediately after being extracted, and taken to the laboratory. All fish ... was shaken, sealed under nitrogen and then heated on a hot block at 100°C for 30 min. After cooling, 1 ml ... of hexane was added to the mixture. Vortexing was undertaken after capping under nitrogen ... –1, and holding at 250°C for 10 min after ramping at 2°C min–1. The FAMEs were identified by comparing ... Paper Title: Diet study of Antarctic toothfish caught in the east Antarctic based on stomach ... content, fatty acid and stable isotope analyses Abstract / Description: To identify the major prey items ... for Antarctic toothfish (Dissostichus mawsoni) in the small-scale research unit (SSRU) 5841C in the ... between them. δ 15 N values of Antarctic toothfish were higher than for the other species collected ...
Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 29–44 : Author(s): Park, H.J. , I. Yeon, E. Han, Y.J. Lee, S.M. Hanchet, G.W. Baeck, Y. Kwon, S.G. Choi, D.W. Lee and C.K. Kang*
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Analysis of the diet of Champsocephalus gunnari at South Georgia in late summer from 1994 to 1997, Dr Eduardo L. Holmberg surveys
around South Georgia and Shag Rocks - intensively u p to the end of the 1980s and at lower ... (February) of the 1994 survey, stomach contents were analysed qualitatively on board immediately after ... Paper Title: Analysis of the diet of Champsocephalus gunnari at South Georgia in late summer from ... 1994 to 1997, Dr Eduardo L. Holmberg surveys Abstract / Description: The diet composition of the ... superba), followed by the amphipod hyperiid Themisto gaudichaudii, was the main food item around South ... Georgia and Shag Rocks in the period investigated, except in 1994, when the order of importance of these ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 103–123 : Author(s): Barrera-Oro, E., R. Casaux and E. Marschoff
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On the intensity of sampling krill trawl catches
influence length-frequency data quality are also considered. These are the effect of elapsed time after ... . Similarly, a single sample of 50 animals was measured repeatedly at various times (up to 46 hours) after ... at various times up to 46 hours after collection are shown in Figure 7. Results from the ANOV A (F=0.31 ... times after capture. 43 Tableau 1: Figure 1: Figure 2: Figure 3: Figure 4: Figure ... Paper Title: On the intensity of sampling krill trawl catches Abstract / Description: This paper ... uses actual krill length-frequency data in an attempt to address the problem of the determination of ... . The possible effect of two other factors (within-trawl variability and sample decomposition) which may ... influence length-frequency data quality is also considered. Attention is drawn to the following: • all ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 29–48 : Author(s): Miller, D.G.M.
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Krill population biology during the 1991 Chilean Antarctic krill fishery
1) and the catches into three time categories (daytime, from 90 minutes after sunrise to 90 minutes before sunset ... ; twilight, from 90 minutes before to 90 minutes after sunrise and sunset; and night-time, from 90 minutes ... after sunset to 90 minutes before sunrise). 226 The tow number, time of tow, date, position ... Paper Title: Krill population biology during the 1991 Chilean Antarctic krill fishery Abstract ... during krill fishing operations around the South Shetland Islands on board the Chilean factory vessel ... . The fishing ground was divided into two areas: Area A, north of the South Shetland Islands; and Area B ... , north of Elephant Island. The samples were grouped by time of capture: daytime, twilight and night-time ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 223–235 : Author(s): Mujica R., A., E. Acuña S. and A. Rivera O.
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A compilation of parameters for ecosystem dynamics models of the Scotia Sea – Antarctic Peninsula region
for 183 days (~6 months) begin- ning on either 1 October or 1 April to derive the summer and winter ... n mv = = (3b) where mθ is the number of particles released in area m at the beginning ... of the advection period and ,m nθ is the number of these particles that were found in area n at the end ... Paper Title: A compilation of parameters for ecosystem dynamics models of the Scotia Sea ... – Antarctic Peninsula region Abstract / Description: Expansion of the krill fishery in the Scotia Sea ... –Antarctic Peninsula region beyond the current operational catch limit requires the development and ... assessment of methods for subdividing the precautionary catch limit amongst smaller spatial units. This paper ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 1–25 : Author(s): Hill, S.L., K. Reid, S.E. Thorpe, J. Hinke and G.M. Watters
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Low genetic diversity and temporal stability in the Antarctic toothfish (Dissostichus mawsoni) from near-continental seas of Antarctica
in surface waters near the continen- tal shoreline (Andryashev, 1979, 1986; Yukhov, 1982); 21 months after ... begins as fish reach lengths of 50–95 cm and move to the upper continental slope area and nearby ... Paper Title: Low genetic diversity and temporal stability in the Antarctic toothfish ... data on the DNA analysis of recent (2011–2013) samplings of Antarctic toothfish (Dissostichus mawsoni ... analysis of the most informative subset of nuclear genetic markers of SNP variation presented in Kuhn and ... Gaffney (2008), do not support genetic differentiation of samples from the Ross Sea. Discrepancies in the ...
Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 1–9 : Author(s): Mugue, N.S., A.F. Petrov, D.A. Zelenina, I.I. Gordeev and A.A. Sergeev