Resultados de la búsqueda
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Status of the krill stock around Elephant Island in 1991/92 and 1992/93
appeared to be affected by dense salp concentrations during 1992/93 and 1989/90. File: 02loeb-siegel.pdf ... , maturity stage composition and reproductive activity of hill appeared to be affected by dense salp ... Antarctic krill resources and as a source of background data for predator-prey investigations conducted by ... -Krill) contribution by Loeb and Siegel (1992). That data set is now complete and is compared here with ... distributions) using the CSS statistical package was described in detail by Loeb and Siege1 (1992). The pooled ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 7–33 : Autor(es): Loeb, V. and V. Siegel
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Some aspects of the relation between Antarctic krill abundance and CPUE measures in the Japanese krill fishery
reviewed briefly. Important aspects of the fishing operation are the constraints imposed by processing rate ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 109–125 : Autor(es): Butterworth, D.S.
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A balanced model of the food web of the Ross Sea, Antarctica
hypothesis that depletion of Antarctic toothfish by fishing would change the diet of predators of toothfish ... (Weddell seals, orca, sperm whales) by large amounts throughout the Ross Sea, though the importance of ... model does not support the hypothesis that depletion of Antarctic toothfish by fishing would change the ... diet of predators of toothfish (Weddell seals, orca, sperm whales) by large amounts throughout the ... other parts of the ecosystem as well as the target species, both directly from by-catches, and ... indirectly by altering the species composition and inter-specific relationships within the ecosystem ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 1–31 : Autor(es): Pinkerton, M.H., J.M. Bradford-Grieve and S.M. Hanchet
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Status of krill target strength
aggregations of live euphausiids and should not be affected by a frequent cause of bias in single-animal ... should not be affected by a frequent cause of bias in single-animal measurements, namely thresholding ... 102 ! :/ interest in krill biomass, as witnessed, for example, by the scale of international ... recent references on scattering by live euphausiids that avoid or otherwise address the effect of ... back scattering cross section by the square of the length of the body, provided of course that the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 101–126 : Autor(es): Foote, K.G., D. Chu and T.K. Stanton
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A simulation study of the method of deriving natural mortality rate using data for Champsocephalus gunnari in Subarea 48.3
(determined by VPA) and fishing effort is described. The intersect of this regression must be equal to zero if ... the construction of a regression between the rate of annual fishing mortality (determined by VPA ... supuesto es menor que el valor "real". 1. INTRODUCTION In 1989, in the papers by Shlibanov (1989) and ... Sparre (1989) natural mortality rates for Patagonotothen guntheri estimated by different methods were ... Champsocephalus gunnari in Subarea 48.3. A value of 0.56 obtained by Frolkina and Dorovskikh (1989) differed from ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 69–83 : Autor(es): Gasyukov, P.S. and R.S. Dorovskikh
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Estimating unaccounted fishing mortality in the Ross Sea region and Amundsen Sea (CCAMLR Subareas 88.1 and 88.2) bottom longline fisheries targeting Antarctic toothfish
. However, fish that are captured by fishing gear that is not subsequently retrieved are generally not ... of target and by-catch species, impacts to benthic habitats, the introduction of synthetic ... caused by lost fishing gear. Any longline gear that is baited and set, but not successfully retrieved ... that are captured by fishing gear that is not subsequently retrieved are generally not counted in ... Subarea 88.2 fisheries spatially and temporally, by gear type, vessel, depth and small-scale research ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 17–30 : Autor(es): Webber, D.N. and S.J. Parker
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Preliminary model of krill fishery behaviour in Subarea 48.1
data over the period 1989 to 1992. The distribution of catches predicted by the model, which is ... fishery data over the period 1989 to 1992. The distribution of catches predicted by the model, which is ... between December and March, so there is considerable spatial and temporal overlap in krill usage by ... fishermen and predators (SC-CAMLR, 1992). Recently, this concern has been somewhat allayed by a study ... Preliminary Model of Krill Fishery Behaviour (l0 longitude by 0.5" latitude) and temporal blocks of 10-day ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 71–79 : Autor(es): Agnew, D.J. and V.H. Marín
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Variations in condition indices of mackerel icefish at South Georgia from 1972 to 1997
affected by the reproductive cycle unless there is high krill availability during the months around the ... of local krill density. The index is likely to be little affected by the reproductive cycle unless ... by the Convention for the Conservation of Antarctic Marine Living Resources. An index of condition ... of C. gz~ni~nri derived by comparing measured mass to an estimated 'average' mass has been show11 ... followed by poor feeding conditions. Initially the stomach contents would decrease leading to a reduction ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 119–132 : Autor(es): Everson, I. and K.-H. Kock
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Midwater trawl catchability as an aspect of a quantitative assessment of krill biomass conducted using a trawl census survey
catchability over the survey area and also because the biomass estimates thus obtained were characterised by ... because the biomass estimates thus obtained were characterised by high relative error. A standard method ... biomass for the entire survey area is calculated by adding the values for each layer. Yu.V. Kadilnikov ... - area and volume fished by the trawl over a standard hauling period; mq - mean catch per standard ... from formulas 3 to 7, the error in biomass assessment from trawl survey data is determined by ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 257–272 : Autor(es): Kasatkina, S.M.
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The foraging range of Adélie penguins – implications for CEMP and interactions with the krill fishery
Adélie penguins, determined by satellite tracking, at seven widely-spaced breeding colonies along the ... paper presents a summary of the foraging locations of Adelie penguins, determined by satellite tracking ... investigated by Agnew (1992) based on the time penguins are away from their colonies and their average ... swimming speed as reported by, for example, Lishman (1985) and undertaken to determine the foraging ... the preferred fishing method for tracking birds by ARGOS satellite areas are not adjacent to the ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 75–87 : Autor(es): Kerry, K.R., J.R. Clarke, S. Eberhard, H. Gardner, R.M. Lawless, S. Corsolini, S. Focardi, E. Franchi, D. Rodary and R. Thomson