Search results
-
Assessing the power to detect systematic change in Adélie penguin foraging trip duration
there is a constant rate of increase for a number of years, after which the mean level remains constant. Monitoring ... or ‘baseline’ data) and b years after that impact (post- impact data) from 2n penguins (i.e. n pairs) each ... stages respectively, (ii) an impact after a years causes either a step, ramp or trend change ... after an impact (i.e. Mi+1 = Mi + pMi, or 1 1i i M p M + = + , where Mi is the expected trip ... Paper Title: Assessing the power to detect systematic change in Adélie penguin foraging trip ... variation was known to occur. Variability among trips and penguins was greater in the crèche stage, but ... variability among years was greater in the guard stage. Estimates of variability were used to explore the ... greater in the crèche stage than the guard stage. The gain obtained by increasing the number of penguins ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 201–215 : Author(s): Southwell, C., J. Clarke and L.M. Emmerson
-
Surface water circulation in krill fishing areas near the South Shetland Islands
but both reached the South Georgia area 110 to 120 days after they had left the South Shetlands (Figures ... l(c) and 3(b)). After entrainment there for 25 days (as indicated by semicircular movements), it moved northeast along ... to the distribution of krill catches (Figures 3 and 4). Fishing usually begins in January (Figure 3). Ichii ... 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 ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 125–136 : Author(s): Ichii, T. and M. Naganobu
-
Observations on haul-out patterns and trends in the breeding populations of southern elephant seal at Península Valdés (Patagonia) and Stranger Point (25 de Mayo - King George I.)
of females from these two breeding places. - 456 - The second one was included because after ... census, at Stranger Point this should be carried out after the 30/10 (27/10 plus the 3-days rank ... ), and at Peninsula Valdes after the 5/10 (30/9 plus 5-days rank). Here the weaning pups immigration from other areas ... population trends. Migration between subantarctic and antarctic places after the breeding season have ... Paper Title: Observations on haul-out patterns and trends in the breeding populations of southern ... de Mayo-King George I. were studied during the breeding season from 1979 to 1987. Two main objectives ... were taken into consideration: haul-out pattern and the female population trend. In both places, the ... intrinsic population growth rate is positive. In 1982, at Stranger Point, a sharp decrease of the female ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 453-463 : Author(s): Vergani, D.F., M.N. Lewis and Z.B. Stanganelli
-
By-catch, growth and feeding of Antarctic juvenile fish taken in krill (Euphausia superba Dana) fisheries in the South Georgia area, in 1992
the tip of the rostrum to the end of telson) and weighed. The stomach contents of 108 specimens ... the coastal fjords and feed on copepods (Rembiszewski et al., 1978; North and Ward, 1990). After leaving ... superba Dana) fisheries in the South Georgia area, in 1992 Abstract / Description: This paper discusses ... an investigation of juvenile Antarctic fish caught during krill fishing by the FV Grigory Kovtun in ... the area around South Georgia from May to July 1992. Two species were predominant in the by-catches ... : Champsocephalus gunnari and Nototheniops larseni. The frequency of occurrence of juvenile fish was 18.2% when all ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 129–142 : Author(s): Pakhomov, E.A. and S.A. Pankratov
-
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
-
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.
-
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
-
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
-
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*
-
Report of the CCAMLR Performance Review Panel
) and the end of August when the final report was transmitted to the Secretariat in time for its circulation ... performance review of the organisation during 2008. CCAMLR’s decision provided for the review to be carried ... out by a panel appointed by the Commission composed of nine persons as follows: four internationally ... recognised experts with CCAMLR experience; the Chair of the Antarctic Treaty Consultative Meeting’s Committee ... 1 of the report provides the names of the Panel members. The purpose of the performance review was ...
Document : Site Section: Publications