Résultats de la recherche

1. Survey design to estimate krill abundance during FIBEX

   methodology for assessing the abundance of krill. The survey design used in the southwest Atlantic study area ... of the FIBEX is described in this paper. Sampling involved the use of echo sounders for estimating ... krill abundance as well as collection of data on the size, density and distribution of krill swarms. In ... also collected. The study area was subdivided into several geographically distinct subareas in each of ... L'un des objectifs principaux de la FIBEX (Premiere expenence internationale BIOMASS), 1981 etait ... d'etudier la methodologie de I'evaluation de I'abondance du krill. Le modele de prospection utilise dans ... la zone d'etude de l'Atlantique sud-ouest est decrite dans ce document. L'echantillonnage a ... sur la taille, la densite et la distribution des essaims de krill. En sus, des informations ont ete ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 253–263 : Auteur(s): Everson, I., I. Hampton and G.M. Jolly

2. Investigations of required sampling regimes for environmental parameters

   / Description:  The sensitivity of different sampling regimes in identifying inter-annual changes in ... 1987. Strong daily, depressional (4 to 5 days) and yearly cycles were seen in temperature, wind speed ... and pressure. Sampling daily maxima and minima would be sufficient to detect a 2 to 3°C change in ... speed continuously or as daily maxima and minima would be sufficient to detect a 10 to 20% change in ... transformee par ca1cullogarithmique avec a de 0.05 et P de 0.9. Pe3IOMe tIYBCTBHTeJIbHOCTb Pa3JIH4HbIX pe ... donnees de l'environnement de la station Davis, Antarctique, de 1985 a 1987. D'importants cycles ... minimales pour deceler une variation de 2-3°C dans la temperature mensuelle moyenne sur deux ans avec une ... signification a de 0.05 et P de 0.8. Un releve continu de la force du vent ou des vitesses maximales et ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 561–573 : Auteur(s): Agnew, D.J.

3. Catch-at-age analysis applied to new fisheries: the case of Dissostichus eleginoides

   Abstract / Description:  Traditionally, the approach used in the assessment of new fisheries has been based ... resource by coarse methods. The main aim of such surveys is to monitor fishing operations in order to ... develop a comprehensive sampling design which will provide data in line with assessment procedures that ... are quite similar to those commonly used in the statistical sampling theory. These procedures are, to ... exploitation pattern at age, ri, can be estimated by ia exp (- b· i) r· = J max(ia exp (- b· i)) (6 ... south of Chile which is being conducted in accordance with CCAMLR regulations. Resume L'approche de ... -similaires it celles generalement utilisees par la throrie de l'echantillonnage statistique. Dans une ... d'evaluation des parametres des stocks de poissons. Cette nouvelle procedure est appliquee it la nouvelle ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 3–9 : Auteur(s): Zuleta, A.V. and C.A. Moreno

4. Growth and natural mortality of Patagonian rockcod (Patagonotothen guntheri shagensis) from Shag Rocks shelf

   -weight data of research and fishery survey cruises in the Shag Rocks area from 1978 to 1986. The natural ... of natural mortality M=0.8 was used in calculations and the optimal age and length for harvesting ... . Resume Les parametres de I'equation de croissance de Bertalanffy, en ce qui concerne la bocasse de ... la region des Shag Rocks de 1978 a 1986. Le taux de mortalite naturelle a ete estime par six ... methodes differentes et s'echelonnait entre 0,63 et 1,06. La valeur moyenne de la mortalite naturelle ... d'exploitation de la bocasse de Patagonie sont de 2,5 annees et de 12,6 cm. Pe310Me llapaMeTpbI ypaBHeHl15I ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 111–121 : Auteur(s): Shlibanov, V.I.

5. Status of the Polish FIBEX acoustic data from the West Atlantic

   / Description:  Acoustic data from the Polish FIBEX survey in the West Atlantic were analysed using recent ... densities of krill in the oceanic parts of the Drake Passage were low (3 g m-2); however, the results also ... in the Bransfield Strait. These results are discussed in the context of spatial and seasonal ... . Naganobu. 1991. Krill (Euphaus ia superba) distribution in relation to water movement and phytoplankton ... . A concept of seasonal variation of krill (Euphaus ia superba ) distribution and abundance west ... for the area and shown to be important. Analyse des donnkes acoustiques de la campagne d'evaluation ... FIBEX men6e par la Pologne dans l'ouest de l'ockan Atlantique, par les estimations de la reponse ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 125–132 : Auteur(s): Trathan, P.N., J. Kalinowski and I. Everson

6. Chilean krill fishery: analysis of the 1991 season

   data and its use in studying small-scale spatial distribution of catches. The results show that krill ... fishing in Subarea 48.1 is particularly intense near CEMP sites. Other ways of using of haul-by-haul data ... l'intensite particuliere de la peche de kriU a proximite des sites du CEMP de la sous-zone 48.1. Quelques ... AaHHbIX 3a Ka)l{Aoe OT AeJIbHOe TpaJIeHHe. Resumen Este documento resume la informacion de las ... capturas de kriU en 1991 realizadas por Chile. Se destaca la importancia del anaIisis de informacion de ... lances individuales y su utilidad en el estudio de la distribucion espacial de las capturas a escala ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 273–287 : Auteur(s): Marín, V.H., A. Mujica and P. Eberhard

7. Homogeneity of body length composition of Antarctic krill within the commercial zone

   Abstract / Description:  The homogeneity of krill (Euphausia superba) length composition in commercial ... haul. There was no significant difference (P >0.5) in 53 out of 60 hauls. Therefore it is concluded ... that sampling from one part of the haul provides a reasonable estimate of length composition in the ... entire haul. In contrast to small variations in length composition within the same haul, variation ... krilllength frequency compositions were bimodal. Resume L'homogeneite de la distribution des frequences ... conclure que l'echantillonnage provenant d'une partie du trait offre une estimation raisonnable de la ... composition en longueurs de tout le trait. Contrairement aux variations minimes dans la distribution en ... frequences de longueurs dans un meme trait, la variation entre plusieurs traits etait la plus claire dans ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 17–28 : Auteur(s): Ichii, T.

8. Surface areas of seabed within the 500 m isobath regions within the South Shetland Islands (Subarea 48.1)

   in calculated seabed areas from previous studies were likely due to both improved methodology and ... National Marine Fisheries Service US Antarctic Marine Living Resources Program PO Box 271, La Jolla, Ca ... de la chaine des iles Shetland du Sud, de l'ile du Roi George B l'ile Smith, et de la region de 1 ... tenu de la pente du fond de la mer. La difference entre ces calculs et ceux d'etudes precedentes ... resulte vraisemblablement, tant de l'amelioration de la methodologie que de la determination des ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 133–140 : Auteur(s): Jones, C.D., S.N. Sexton and R.E. Cosgrove III

9. Comparison of age readings from scales and otoliths of the Patagonian toothfish (Dissostichus eleginoides) from South Georgia

   region (Subarea 48.3). In 44% of specimens, age readings from both structures were identical. A Wilcoxon ... test for paired data (Ts = 0.256, n = 59) conducted on the remaining 56% showed that differences in age ... which relates maximum observed age to natural mortality. In this case we used M = 0.13, which is the ... ) OqeHKa BO3paCTa - 21 ran, o6wax JJJlkIHa - 173 CM. P a c y ~ o ~ 2: Pe lynb~a~br onpeAeneHm ~ o 3 p a ... legines australes (Dissostickus eleginoides) de la region de la Georgie du Sud (sous-zone 48.3). Pour 44 ... determiner l'bge de D. eleginoides car elle ne sous-estime pas l'bge et se reville la plus efficace en ... D. eleginoides rencontre serait de 24 ans, ce qui se rapproche des 22,8 ans estimes par la formule ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 191–203 : Auteur(s): Cassia, M.C

10. Operational interactions of sperm whales and killer whales with the Patagonian toothfish industrial fishery off southern Chile

    eleginoides) fishery operations were assessed in southern Chile during surveys with observers on board ... %. Considering that no interactions were recorded in 153 (84%) of the effectively monitored sets, and that the ... Sep Oct Nov Dec Month S pe rm w ha le s (in di vi du al s) 0 10 20 30 40 50 60 70 ... ) et d'orques (Orcinus orca) avec les opérations de pêche à la légine australe (Dissostichus ... la médiane du taux de déprédation étaient de 0, il est considéré que l'impact des cétacés sur le ... rendement de la pêche est faible. Lors des observations à la fois d'orques et de cétacés (n = 12), le taux ...

    Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 127–140 : Auteur(s): Hucke-Gaete, R., C.A. Moreno and J. Arata

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