Search results
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The Soviet krill fishery in the Atlantic Sector of the Antarctic from 1977 to 1991: fishing effort distribution and interannual patterns
. From May to August 1983 fi shing conditions in Subarea 48.3 were reported as either ‘unstable ... –1988. It is likely that environmental conditions and operational constraints influenced the ... variability of the meridional atmospheric processes. Retrospective data analyses show that the fishing effort ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 1–13 : Author(s): Litvinov, F.F., V.A. Sushin, G.A. Chernega and O.A. Berezhinsky
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Evaluating the impact of multi-year research catch limits on overfished toothfish populations
mortality being 0.1 higher or lower than the assumed value of 0.13 was tested in scenarios 18 and 19 ... mortal- ity on mature fish that was not being compensated for by the sufficient addition of newly ... additional fisheries removals for research purposes needs to be evaluated against the risk that such catches ... should be avoided to ensure that research does not significantly impact on the recovery of depleted ... populations Abstract / Description: In stocks that have been depleted by overfishing, the benefit of ... toothfish (Dissostichus eleginoides) stock that has been subjected to varying levels of overfishing and ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 47–55 : Author(s): Welsford, D.C
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Spatially explicit population dynamics models for Antarctic toothfish in the Ross Sea region
. Conceptually this requires either homogenous mixing of tagged and untagged fish in the population ... of complete mixing of tagged and untagged fish in the fished population is likely to be violated at least ... , from 1995 to 2011. Fishing mortal- ity (from 1998) and tagging processes (from 2001) consistent ... 6 939 - - - 2000 752 14 081 - - - 2001 592 14 087 - 259 - 2002 1 355 16 612 831 684 1 2003 1 769 26 ... Sea region Abstract / Description: Population modelling software was developed that captures the ... dynamics of spatial heterogeneity of the population along with age structure, movement and reproductive ... were consistent with the results of tagging studies and fits to the other observations (age ... scenarios suggested that the current single-area stock assessment is biased low by 19–43%. File: 06 Mormede ...
Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 19–37 : Author(s): Mormede, S., A. Dunn, S. Hanchet and S. Parker
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Sources of variance in studies of krill population genetics
to the gel (BioRad Protean IIxi). Twenty-fi ve samples were run on each gel, with one sample being ... their ecological and economic importance. The possibility that there are distinct genetic stocks of ... development of genetic technologies that are more sensitive to subtle population structure than older methods ... . superba and the boreal species Meganyctiphanes norvegica that used allozymes found no evidence of genetic ... , the underlying assumption of these studies that differentiation between samples is caused primarily by ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 107–116 : Author(s): Jarman, S.N. and S. Nicol
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Potential impacts of bottom trawling on benthic communities in Prydz Bay, Antarctica
~eHCTBH5.I ~OHHoro TpaJIeHH5.I Ha 6eHTH'-IeCKHe co06~eCTBa B 3TOM paHOHe. BeHTOC 6bIJI HCCJIe~OBaH ... KaTeropHH H B3BemeHHble. B COCTaBe y~ep)l{aHHbIX 6eHTH'-IeCKHX BH~OB B OCHOBHOM HaXO~HJIHCb ry6KH ... taxon in the codend. At four stations, the biomass of sponges exceeded 100 kg with the maximum being ... demonstrate that the biomass of benthos that could be disturbed by commercial bottom trawling could be high in ... in areas in which commercial bottom trawling may occur so that measures can be taken to ensure the ... Prydz Bay. Also, the results indicate that there is a need to examine the nature of benthic communities ...
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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Cephalopod research in the Antarctic
of future commercial exploitation. Research is being carried out at BAS on the species composition ... that they will be the subject of future commercial exploitation. Research is being carried out at BAS on the species composition ... exploitation. Research is being carried out at BAS on the species composition and distribution of Antarctic ... KOMMCPl.fCCKOH 3KCnJlyaTal..\l1l1. B BAS (BpI1TaHCKOM ynpaBJICH1111 aHTapKTI1l.feCKOH C'beMKI1) B HaCTOH~CC ... ' and 'Professor Siedlecki' cruises, is being examined by the author at SAS •. Considerable progress could ... temperate oegopsid squid Illex argentinus from the Falkland Islands fishery. Data are being collected ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 323-334 : Author(s): Rodhouse, P.G.
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Some principles for fisheries regulation from an ecosystem perspective
objectives are being met to be assessed. The advantages of using a feedback method of regulation ... objectives are being met to be assessed. The advantages of using a feedback method of regulation ... can be robustly estimated, thus allowing the degree to which objectives are being met to be assessed ... being recognised (Tanaka, 1984; de la Mare, 1986a and 1986b). Di Stefano, Stubberbud and Williams ... being increased, if the observed values of X and Y were above their target levels, but some reduction ... (the single species model being the extreme example). The degree to which the abstracted system model can ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 323-339 : Author(s): de la Mare, W.K.
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Soviet proposals for a program of ecosystem monitoring in the Commonwealth Sea and Prydz Bay
parameters of the environment, as well as on phyto- and zooplankton being collected. Hydrological data ... and objectives being aligned to the monitoring aims specified in documents SC-CAMLR-IV/7 and SC-CAMLR-IV/13 ... phytoplankton. It is recommended that all surveys and sampling techniques should be standardized and that all ... research activities be co-ordinated by participating CCAMLR Members. The overall program should be co ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 355-362 : Author(s): USSR
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Choosing distance between acoustic survey tacks
;UOHaJIbHa rrJIOTHOCTU. K03~Hu;ueHTa BapuaU;HU: a - 3,1; b - 3,2. fIJIOTHOCTU C'beMOK. 3Hat.{eHHR ... PHCYHOK 2 3aBucHMoCT b OTHOllieHHR paCCTORHHR Me)KAY raJICaMH, r, K BeJIHt.{HHe fIJIOmaAH, 1, OT K03~HU ... ;HeHTa BapHaU;HH, V , rrpu pa3JIHt.{HoH BeJIHt.{HHe rrorpelIIHocTH ou;eHKH 6HOMaCCbJ, cS (3MfIHput ... 06'beKTa (OP OTAeJI bHbJe fIRTHa oAHoro pa3Mepa, OAHO SD fIRTHO, ss OTAeJI bHbIe fIRTHa ... mathematical model was used to show that the distance between acoustic survey tacks can reasonably be selected ... that the suggested criterion be applied in real hydroacoustic surveys. File: 08-Kalikhman-et-al.pdf ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 153-164 : Author(s): Kalikhman, I.L., Z.I. Kizner, B.R. Zaripov and W.D. Tesler
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Patterns and processes in the distribution and dynamics of Antarctic krill
concentraciones a pequena escala. 1 . INTRODUCTION Among the important questions being addressed ... regroupements" de Mangel (1987). TIo,[{nllCll K pllcYHKaM CneKTpaJIbHble rpa$llKll cpe,[{Hllx Be ... JIll1IllH ,[{JI5I KPllJI5I, in vivo $JIyopec~eH~llllll TeMnepaTypbI (no Be6epy ll,[{p., 1986 r.). CneKTpbI cpe ... 1.JaCTOTe. (no Be6epy II '[{p., 1986 r.). PacnOJIO)l(eHlle rll,[{porpa$ll1.JeCKllX pa3pe30B ... distribution and dynamics of Antarctic krill population at various spatial and temporal scales. We suggest that ... models of increasing complexity be developed iteratively for variability and patchiness of krill ... abundance. Incremental models should then be compared to statistical descriptions of the observed ... critical processes to be added. An analysis of spatial distribution of krill in the Bransfield Strait area ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 281–299 : Author(s): Levin, S.A., A. Morin and T.M. Powell