Résultats de la recherche
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Connectivity and population structure in Pleuragramma antarcticum
silverfish (Pleuragramma antarcticum) are distributed in independent, discrete populations in the Ross Sea ... populations: i) in the Ross Sea, ii) on the southern Antarctic Peninsula in Marguerite Bay and off Charcot ... (USA) and M. Pinkerton (New Zealand) Title: Connectivity and population structure in Pleuragramma ...
Meeting Document : WG-FSA-11/19 : Auteur(s): J. Ferguson, J. Ashford, A. Piñones, J. Torres, W. Fraser, C. Jones (USA) and M. Pinkerton (New Zealand)
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CONVERSION FACTORS AND GREEN WEIGHT CALCULATION IN THE ANTARCTIC KRILL FISHERY
; The variation in reported conversion factors for similar reported products can be attributed to a ... number of reasons:.; o Differences in the method of processing the same products o Seasonal variation o ... conversion factor) Uncertainty in reported Conversion Factors does not necessarily lead to uncertainty in ... Clark, J., Peatman, T. Title: CONVERSION FACTORS AND GREEN WEIGHT CALCULATION IN THE ANTARCTIC KRILL ...
Meeting Document : TASO-09/06 : Auteur(s): Moir Clark, J., Peatman, T.
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A multi-frequency method for improved accuracy and precision of in situ target strength measurements
accurately measure in-situ target strengths (TS) is dramatically enhanced (98.2-99.4%) by combining ... juxtaposed single-beam transducers. Both methods were utilized to extract in-situ TS measurements of ... Antarctic scatterers simultaneously at 38, 120, and 200 kHz. Differences in the resulting TS measurements ... provided information about the identity of constituents in a mixed species assembly. Author(s): Hewitt ...
Meeting Document : WG-EMM-97/24 : Auteur(s): Hewitt, R.P., Soule, M.A., Demer, D.A.
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On the accuracy of the pellet analysis method to estimate the food intake in the Antarctic shag Phalacrocorax bransfieldensis
through the gastrointestinal tract of the otoliths of fish represented in pellets of the Antarctic Shag ... slightly decreased in February. These estimations, in general, are in line with those previously obtained ... of the pellet analysis method to estimate the food intake in the Antarctic shag Phalacrocorax ...
Meeting Document : WG-EMM-97/61 : Auteur(s): Casaux, R.
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Preliminary results on by-catch of fish during krill fishery in March to May 1993 on the polish trawler M/T Lepus
of their goals was to determine the proportion of juvenile fish forms in krill concentrations. The ... -catch of juvenile fish in the krill fishery was small. and off South Orkney Islands there was no such by ... -catch at all in the samples collected. In both areas a small by-catch from the family Myctophidae was ... during krill fishery in March to May 1993 on the polish trawler M/T Lepus Approval: Approved ...
Meeting Document : WG-FSA-94/25 : Auteur(s): Z. Cielniaszek and R. Pactwa (Poland)
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Diagnostic model of functioning of Antarctic krill population in the Cooperation Sea
mathematical modelling of Antarctic krill population in the Cooperation Sea. The choice of investigation area ... in krill abundance in the Cooperation Sea basing on mathematical modelling. The main task was to ... assess variations in parameters of the ecosystem and its staunchness against their impact. A possibility ... : Diagnostic model of functioning of Antarctic krill population in the Cooperation Sea Approval: Approved ...
Meeting Document : WG-Joint-94/07 : Auteur(s): V. Belyaev and M. Khudoshina (Ukraine)
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Variability of krill stock composition and distribution in the vicinity of Elephant Island during AMLR investigations 1988-1992
differences in distribution patterns reflected changes in year class success and maturity stage composition ... Abstract: Krill stock composition and distributional patterns in the vicinity of Elephant Island ... during austral summer 1988-1992 are described. Changes in both size and maturity composition over the ... five year period indicates strong recruitment from the 1987/88 and 1990/91 year classes and poor ...
Meeting Document : WG-KRILL-92/12 : Auteur(s): V. Loeb (USA) and V. Siegel (Germany)
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Assessment of the Dissostichus eleginoides stock in Subarea 48.3 for the 1990/91 season and calculation of TAC for the 1991/92 season
Abstract: Shnyute’s generalised cohort analysis of size composition in catches was used to ... estimate the Dissostichus eleginoides stock in Area 48.3. This made it possible to ignore the hypothesis of ... equilibrium in the stock and to examine the dynamics of its abundance and biomass. At the start of the 1990/91 ... optimal results, fishing operations should be conducted at a level of F0.1. In accordance with such a ...
Meeting Document : WG-FSA-91/24 : Auteur(s): P.S. Gasiukov, R.S. Dorovskikh and K.V. Shust (USSR)
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Variants of the ASPM assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity which attempt to reconcile CPUE and catch-at-length data
examined. One allows for the possibility of changes in somatic growth rate in response to increased food ... in somatic growth rate as abundance drops. For the recruitment variability model, results remain ... highly sensitive to the relative weights given to CPUE and catch-at-length data in the model fitting ... the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity which attempt ...
Meeting Document : WG-FSA-SAM-04/12 : Auteur(s): Brandão, A., Butterworth, D.S.
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Abundance and reproductive distribution of Pygoscelids sp. in the northern area of Danco Coast, Antarctic Peninsula
potential to act as ecological indicators. The western Antarctic Peninsula is one of the three sites in the ... penguin (Pygoscelis papua) in the northern sector of the Danco Coast, north-west of the Antarctic ... Peninsula during the breeding season 2010-2011. Our results showed an overall increase in both populations ... in relation the 1998. Since the effects of climate change and human harvesting could confound ...
Meeting Document : WG-EMM-12/58 : Auteur(s): M.M. Santos, E.F. Rombolá, D. González-Zevallos, M.A. Juáres, J. Negrete and N.R. Coria (Argentina)