Search results
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Preliminary results of research activities of RV Evrika in the Scotia Sea in January-March 1988
Sea and adjacent waters, accompanied by regular trawlings with an Isaac-Kidd trawl. The waters off ... in areas of the Atlantic Sector of the Southern Ocean identified for monitoring by CCAMLR. During the ... -disciplinary survey was conducted of the Scotia Sea and adjacent waters, accompanied by regular trawlings with ... identified for monitoring by CCAMLR. During the observation season the zonal drift of waters of the ... penetrated the eastern part of the area from the east and were characterized by surface temperatures ranging ... characterized by high assimilation values. In the photic layer, bacterioplankton production fluctuated between ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 215-229 : Author(s): Maklygin, L.I., A.S. Fedorov, V.N. Shnar, Yu.A. Shulyakovsky, I.V. Krasovsky, Yu.D. Shuvaev and A.V. Kromsky
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Killer whale (Orcinus orca) and sperm whale (Physeter macrocephalus) interactions with longline vessels in the Patagonian toothfish fishery at South Georgia, South Atlantic
might indicate that sperm whales rip whole fi sh from the line, as no mutilated fi sh (heads) were ... or mutilated fi sh are not observed, al though damage to fi shing gear, occasional fi sh heads ... ; • toothfi sh heads and other offal were retained on board during line hauling and discarded away from ... fishing operations were recorded by CCAMLR observers between 2000 and 2002 at South Georgia (Subarea 48.3 ... areas with lower catch rates, indications are that depredation by sperm whales can lead to a decrease in ... catches. Some mitigation measures have been tried by vessels to reduce interactions with cetaceans ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 111–126 : Author(s): Purves, M.G., D.J. Agnew, E. Balguerías, C.A. Moreno and B. Watkins
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A post-processing method to remove interference noise from acoustic data collected from Antarctic krill fishing vessels
degraded by interference noise due to the lack of synchronisation of the acoustic instruments found on some ... the method was demonstrated by applying it to the acoustic data at 38, 70 and 120 kHz collected from a ... utility of the data may be seriously degraded by interference noise due to the lack of synchronisation of ... post-processing software. The utility of the method was demonstrated by applying it to the acoustic ... . The estimated standing stock of krill (B0) derived from the CCAMLR-2000 Survey is still used by the ... , scientific echosounders that are the same or similar to those used by research ves- sels. For example, three ...
Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 17–30 : Author(s): Wang, X., J. Zhang and X. Zhao
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Fishing intensity of the Soviet fleet in krill fisheries in the southern Atlantic (Subareas 48.2 and 48.3)
Subareas 48.2 and 48.3. During this period catches reported by the Soviet fleet amounted to more than 95 ... % of the total catch. The calculations were based on haul-by-haul data from the Soviet fleet, using a ... seasons within Subareas 48.2 and 48.3. During this period catches reported by the Soviet fl eet amounted ... to more than 95% of the total catch. The calculations were based on haul-by-haul data from the ... resources adopted by CCAMLR. Studies of the effects of krill removal on their stock size and on dependent ... ecosystem approach adopted by CCAMLR (SC-CAMLR, 1993 and 2001; Thomson et al., 2001; Hewitt and Low, 2000 ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 15–35 : Author(s): Kasatkina, S.M. and V.F. Ivanova
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Potential impacts of bottom trawling on benthic communities in Prydz Bay, Antarctica
, y ~ep)l{aHHoMy npH ~OHHOM TpaJIeHHH BO BpeM5.I aBCTpaJIHHCKOH CbeMKH ~eMepCaJIbHhlX nJIaBHHKOBhlX phl6 ... demersal finfish species in Prydz Bay by Australia in the 1990/91 season. The data collected are used to ... demonstrate that the biomass of benthos that could be disturbed by commercial bottom trawling could be high in ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 403–410 : Author(s): Constable, A.J.
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Areal and seasonal extent of sea-ice cover off the northwestern side of the Antarctic Peninsula: 1979 to 1996
IT., 0 YeM MOXHO 661~10 CYAkiTb no n03nHeMy OTCTynneHHKI nbA8 B ~ C H O ~ ~ 1985, 1990 H 1994 ... with features described by Stammerjohn and Smith (1996) for ice cover in the Bellingshausen Sea ... . Periods of extensive winter ice cover peaked in 1980, 1986, 1991and 1995 and were foreshadowed by the late ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 65–73 : Author(s): Hewitt, R
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Fish distribution and biomass in the Heard Island zone (Division 58.5.2)
YacTsrx nnaTo, rAe BoAa my6me 300 M, OqeHb LUMPOK, H 0 3TOT BMA HMrAe He BCTpeYaeTCFi B 60nbrrr ... : A ~ H H ~ I ~ no YacToTHoMy pacnpeAeneHMm AnsH C. gunnari Ha Tpex yuacTKax 3a nepHoA MmHb- HWnb 1990 r. &3~HbIe H0 ... . coo64. 1994 r.). PHCYHOK 3b: AaH~ble no uacToTHoMy pacnpeneneawo nnm C. gunnari Ha Tpex yuacmax 3a ... la Mare PAC~HOK 3c: f l a ~ ~ h ~ e no YacToTHoMy pacnpeReneHmo RnuH C. gunnari Ha Tpex yYacTKax ... nowhere very abundant, although the total biomass is relatively high by virtue of the large area it ... surveys, but this had disappeared by the third survey. Rays were widespread and moderately abundant in ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 1–20 : Author(s): Williams, R. and W.K. de la Mare
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Statistical problems in krill stock hydroacoustic assessments
method is most appropriate, this is made even more difficult by the fact that most survey methods assume ... non-stationary populations, which have not been well addressed by present techniques. However, this ... difficult by the fact that most survey methods assume the population is fixed in space, relative to the ... well addressed by present techniques. However, this does not invalidate the use of available methods ... estimates of abundance by depth and distance along a survey track. These relative estimates of abundance ... by adjusting the estimate by the ratio of the old and new target strengths. Surveys are conducted ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 301–309 : Author(s): Macaulay, M.C.
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Effects of weather and sea-ice on the reproductive performance of the Adélie penguin at Edmonson Point, Ross Sea
seasons. Weather and sea-ice regimes varied notably, especially in 2003, which was characterised by ... extensive and persistent sea-ice and strong winds with snowfalls in December. First incubation trips by ... varied notably, especially in 2003, which was characterised by extensive and persistent sea-ice and ... strong winds with snowfalls in December. First incubation trips by females were signifi cantly longer ... chick loss (Muller-Schwarze, 1984). The Adélie penguin breeding cycle is strictly constrained by the ... foraging trips (Irvine et al., 2000). However, the degree to which trips lengthen is con- strained by the ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 99–109 : Author(s): Olmastroni, S., F. Pezzo, V. Volpi and S. Focardi
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Using ecosystem monitoring data to detect impacts
impacted by activities such as fishing. This paper discusses a range of methods for inferring such impacts ... point. The second approach allows inference criteria based on changes in this frequency rather than by ... indicate the state of ecosystems and whether they have been impacted by activities such as fishing. This ... inference criteria based on changes in this frequency rather than by reference to a critical probability ... assessed by reference to a control population. Developing man- agement strategies that use uncontrolled ... ongoing chal- lenges faced by CCAMLR is to develop a manage- ment strategy for the krill fishery which ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 197–212 : Author(s): Hill, S.L., J. Forcada, P.N. Trathan and C.M. Waluda