Search results
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The status of krill (Euphausia superba DANA) resources in CCAMLR Statistical Divisions 58.4.2 and 58.4.3 from 1988 to 1990. Results of acoustic surveys
paper. It was found that the increase in krill biomass observed in the area in 1990 is linked with the ... abundant 1986 and 1987 year-classes and with a diminished rate of emigration of krill of these year-classes ... ). Results of surveys conducted from 1988 to 1990 are discussed in the paper. It was found that the increase ... in krill biomass observed in the area in 1990 is linked with the abundant 1986 and 1987 year-classes ... and with a diminished rate of emigration of krill of these year-classes from the area in 1989/1990 ... bridge device with a working frequency of 136 kHz. A copper ball, 26 mm in diameter, was used to ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 163–173 : Author(s): Bibik, V.A. and V.N. Yakovlev
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Histological study on the ovarian development of mackerel icefish (Champsocephalus gunnari) from the South Georgia Islands
individuals (45%) was found, together with a relatively low occurrence of females that spawned or were in ... using microscopes (microscopical scale) was elaborated and adapted to correspond with the macroscopic ... (i.e., unaided visual observation) scale commonly used. The first five stages correspond with those ... that the eggs of the species could be demersal. This was also reported for other channichthyids ... indicates that no immature elements are incorporated into the cohort of yolky oocytes that will be ... , these data should be treated with caution because of the relatively low number of individuals in the ... correspond with the macroscopic (i.e., unaided visual observation) scale commonly used. The first five ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 35–49 : Author(s): Macchi, G.J. and E.R. Barrera-Oro
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Revised estimates of the area of the South Georgia and Shag Rocks shelf (CCAMLR Subarea 48.3)
should be used for future assessments and for assisting with the stratification of surveys. File ... strata. The new dataset is considered the most accurate and reliable currently available and should be ... used for future assessments and for assisting with the stratification of surveys. Résumé Un nouveau ... known to be unreliable, particularly for the areas to the south of South Georgia, as they rely on ... limited sounding data, with some dating from the 1920s. Updated estimates of the sea floor in Subarea ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 167–175 : Author(s): Belchier, M. and P. Fretwell
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Remarks on the natural mortality of Dissostichus eleginoides in Subarea 48.3
3Ha1HUeJlbHbIX pa3HlUJ. B BeJlHlIHHaX M, 0l.J.eHeHHbIX no rJly6HHe J10Ba H THny KprollKa npH Pa3J1HlIHbIX ... napaMeTpax pOCTa, HO HMeJlHCb pa3HHl.J.bI B BeJlHlIHHaX M Me)l{,l{y npOMbICJlOBbIMH YllaCTKaMH. C ,l{pyroH ... CTOPOHbI, cpaBHHBa51 Pa3J1HlIHbIe Cpe,l{HHe BeJlHlIHHbI M ,l(J151 Pa3J1HlIHbIX cHTyal.J.HH Ha6J1IO ... KprollKaMH N~ 14 H np5lMbIMH KprollKaMH N~ 22. 06Il(a51 Cpe,l(H5I5I BeJlHlIHHa M ,l(J151 44 ... : fishing site, fishing depth and hook type. It was determined that there were no significant differences in ... M estimated by fishing depth and hook type with different growth parameters although there were ... different cases, it was found that there were significant differences between fishing sites and between ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 21–30 : Author(s): Moreno, C.A. and P.S. Rubilar
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A fine-scale model of the overlap between penguin foraging demands and the krill fishery in the South Shetland Islands and Antarctic Peninsula
a colony with foraging distance being described by a normal density function and foraging direction being ... the M, defined as being at distances of d, S X S dn from the colony The total number of penguins ... the krill resource and is based on a detailed model of penguin foraging patterns combined with catch ... positions. This analysis shows that the overlap between the fishery and chinstrap penguins is much greater ... than for other penguins, and that this overlap has been decreasing since 1988. File: 07agnew ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 99–110 : Author(s): Agnew, D.J. and G. Phegan
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Statistical problems in krill stock hydroacoustic assessments
CbeMOK H aHaJIH3HpOBaHHH pe3YJIbTaTOB. B Bonpoce 0 TO"4HOCTH BeJIH"4HHhI CHJIhI :QeJIH, ,l{a)l(e eCJIH ... aGcOJIIOTHa.SI BeJIH"4HHa HMeIOm;eMC.SI B KaKOM-JIHGo paMOHe GHOMaCChI, a CKopee TO, KaK OHa pacnpe,l{eJIeHa ... 3KOCHCTeMOM npe,l{CTaBHTb GOJIbWYIO :QeHHOCTb, "4eM aGcOJIIOTHO TO"4Hhle O:QeHKH BeJIH"4HHhI GHOMaCChI ... are probably within a factor of 2 of being correct, it seems reasonable to consider the following. Even ... method is most appropriate, this is made even more difficult by the fact that most survey methods assume ... to be not the absolute amount of biomass present in an area, but rather how it is distributed. The ...
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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Low breeding success of the Adélie penguin at Béchervaise Island in the 1998/99 season
the guard stage of 1998/99 was very high, with 41% of trips being longer than 48 hours compared to 14 ... and LeResche (1973) also found this relationship at Ross Island, the low breeding success being attributed ... p 2 l C C q H T h l B a n a C b IIO C p e A H H M I I O K a 3 a T e n R M A J I R O T A e n h H h I X n T M q 6e3 B3Be ... percent of nests with eggs failed during the three weeks following first hatch. A breeding success of 0.43 ... chicks cr6ched per nest was achieved, compared to previous seasons with higher annual breeding success ... , foraging trip duration and diet suggests that the death of chicks during the guard stage was due to an ... reduced feeding frequency. These findings contrast with observations made in 1994/95 (a season in which ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 151–167 : Author(s): Irvine, L.G., J.R. Clarke and K.R. Kerry
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A preliminary assessment of the stock of the ommastrephid squid Martialia hyadesi in the Scotia Sea based on data from predators
~OB aJIb6aTpOca H IO)KHOrO MopCKoro CJIOHa H, BepOSITHO, nOTpe6JISIeTCSI B 3HatlHTeJIbHOM 06be ... Me npOtlHMH n03BOHOtlHblMH XH~HHKaMH IO)KHOrO OKeaHa. OIJ,eHKa 06beMa, e)KerO~HO nOTpe6JISIeMOrO H3Be ... CTHblMH XH~HHKaMH B Mope CKOTHSI, COCTaBJISIeT 326 098 - 330 642 TOHHbl; 94% aToro 06beMa nOTpe6JISIeTCSI IO ... target species. It is likely, therefore, that exploitation of the sub-Antarctic ommastrephid species ... Martialia hyadesi; will be attempted in the future. This squid is an important component of the diet of ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 479–480 : Author(s): Rodhouse, P.G.
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On the presence of Paralomis spinosissima and Paralomis formosa in catches taken during the Spanish survey Antártida 8611
, with a maximum of nine specimens being taken in a single haul (station 140). They were found to be present only ... 160 to 627 m and that of P. formosa, far less frequent in the catches, from 320 to 350 m. Field ... observations showed that these two species were absent from the southern archipelagos of the Scotia Arc (South ... hauls where Paralomis spp. were found, together with the qualitative composition of the fish fauna ... usually accompanying them in the catches, suggest that P. spinosissima and P. formosa tend to concentrate ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 165–173 : Author(s): López Abellán, L.J. and E. Balguerías
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Use of indices of predator status and performance in CCAMLR fishery management
COCTOHT H3 Tpex 3JieMeHTOB, KOTOphle onpe.l(eJI5IIOT BeJIHliHHY H 3HalleHHe H3MeHeHHH OT~eJibHhlX ... . PaccMaTpHBaiOTC5I OTHOCHTeJibHbie npeHMyllleCTBa H npHrO~HOCTb peKOMeH,l{al.\HH no orpaHHlleHHIO 06beMa, BpeMeHH ... trends being detected. Important though such results may be, they will not replace the need for some ... being developed for fisheries directed at existing target species, where there are adequate data ... seabird and seal predators,collected as part of the CCAMLR Ecosystem Monitoring Program (CEMP) could be ... factors potentially influencing or correlated with the changes. The relative merits and feasibilities of ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 353–365 : Author(s): Croxall, J.P.