Search results
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Champsocephalus gunnari stock status in the South Georgia area
predeterminee, I'intensite de la pache eta it de FO.1• Dans les deux premiers cas, la T AC=25-30 mille tonnes ... pache actuel ne mane pas a une diminution de la taille du stock de C. gunnari. Pe3IOMe llaHHbIe ... ). Etat du stock et valeur tMorique calculee de la T AC si F est une valeur moyenne pour les principaux ... groupes d'age. Etat du stock et valeur theorique calculee de la T AC si F=constante. Etat dustock et ... Paper Title: Champsocephalus gunnari stock status in the South Georgia area Abstract ... intensity (F) in a predicted period was equal to the average value of fishing mortality: (b) For the ... predicted period fishing intensity was at the level of that in 1987/88; (c) For the predicted period fishing ... intensity was F 0.1. In the first two cases TAC=25-30 thousand tonnes and stock size does not change. For ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 1-18 : Author(s): Borodin, R. and P. Kochkin
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The ecosystem approach to managing fisheries: achieving conservation objectives for predators of fished species
de conscrvacioi-r? El enfoque propuesto toma en cuenta las incertidumbres producidas por la falta ... to establish management procedures based on these indices. La gestion des p@ches visant des objectifs ... relations 6cologiques et 5 permettre la recup6ration des populations 6puisees dans les reseaux trophiques ... 5 l'approche de la gestion des p&hes tenant compte de l'&osysti.~ne : i ) comment la psche risque-t-elle ... in its infancy. A general approach is proposed for maintaining ecological relationships and providing ... for the recovery of depleted populations in food webs supporting fisheries. This paper addresses the ... objectives? The approach proposed here takes account of uncertainties in knowledge of the structure of ... ecosystems. Estimates of predator production arising from the consumption of fished species (encapsulated in ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 37–64 : Author(s): Constable, A.J
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New data on spawning, hatching and growth of Champsocephalus gunnari on the shelf of the Kerguelen Islands
Champsocephalus gunnari. Un programme de campagnes &evaluation trimestrielles de la zone interne du plateau, tant ... cohorte de poissons chaque annee. Des variations annuelles d'abondance sont toutefois notees. Pendant la ... periode df6chantillonnage, la cohorte 1988 etait dominante sur la partie externe du plateau. Le cycle de ... possible d'observer de reproducteurs en masse sur la partie interne qu'en une seule occasion : pendant ... variations in abundance have been observed. During the sampling period the 1988 cohort was dominant on the ... . Only once have spawners been observed in large numbers on the inner shelf: during the winter of 1991/92 ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 21–34 : Author(s): Duhamel, G
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Otolith and body size relationships in bigeye grenadier (Macrourus holotrachys) in CCAMLR Subarea 48.3
eleginoides) de la sous-zone 48.3 a été mesuré et pesé pour déterminer si les otolithes pouvaient être ... (Macrourus holotrachys) prélevé dans la capture accessoire de la pêcherie de légine australe (Dissostichus ... considérés comme des indicateurs de la taille des poissons. Le poids des otolithes donne une bonne ... estimation de la longueur des poissons, alors que la longueur et la largeur des otolithes n’en donnent pas ... Paper Title: Otolith and body size relationships in bigeye grenadier (Macrourus holotrachys) in ... holotrachys) caught as by-catch in the Patagonian toothfi sh (Dissostichus eleginoides) fishery in Subarea ... less accurate estimates of fish length. Seasonal variations in fish mass with reproductive condition ... in such studies should be representative of the size range consumed by predators. File: 09morley ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 133–143 : Author(s): Morley, S. and M. Belchier
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Calibration of an acoustic echo-integration system in a deep tank, with system gain comparisons over standard sphere material, water temperature and time
. The general trends are consistent between SA gain and TS gain. The total spread in SA gain, including ... acoustic survey. To minimise these effects, the TS gain and SA gain parameters should be meticulously ... sphere. The general trends are consistent between SA gain and TS gain. The total spread in SA gain ... of an echo integration acoustic survey. To minimise these effects, the TS gain and SA gain parameters should ... duree est de 2,9 dB. Les valeurs du gain calibrees avec la sphere de Cu sont, sauf dans le cas de la ... entre les gains de SA et TS. L'etendue totale du gain de SA, Y compris les effets de la temperature ... Fisheries Center, 8604 La Jolla Shores Drive, La Jolla, Ca. 92038, USA 127 128 justesse et de ... des gains de TS et de SA devraient etre mesures meticuleusement et frequemment et ajustesa la duree ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 127–144 : Author(s): Demer, D.A. and R.P. Hewitt
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The biology, ecology and development of fishery management advice for the anomuran crabs at South Georgia (CCAMLR Subarea 48.3)
la tio ns hi p be tw ee n ca ra pa ce w id th ( C W ) an d ca ra pa ce l en gt ... th a b R – sq n N or m al ♂ –8 .6 6 3. 36 97 .9 43 5 Pa ra si tis ed ... ♂ –7 .1 4 2. 97 97 15 9 N or m al ♀ –5 .9 8 2. 71 96 .7 25 5 Pa ra si tis ed ... , 1: 165–173. Lovrich, G.A. 1997. La pesquería mixta de las cen- tollas Lithodes santolla y Paralomis ... of the development of a management regime for them. Finally it aims to highlight areas in which ... further research should be directed in order to provide information on which to base the most appropriate ... assessment and management methods in light of continuing interest in the regional crab fishery. Considerable ... gaps in our knowledge of the biology, ecology and demography of the lithodid species at South Georgia ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 1–15 : Author(s): Belchier, M., T. Peatman and J. Brown
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On the presence of Paralomis spinosissima and Paralomis formosa in catches taken during the Spanish survey Antártida 8611
Ce document fournit des informations obtenues sur les crabes antarctiques pendant la campagne ... espagnole ANTARTIDA 8611 effectuee en 1986, laquelle a couvert le plateau de tous les archipels de la mer ... autour des iles Shetland du Sud. L'intervalle de profondeur couvert par la campagne s'etendait de 63 ... a 643 m. De tout le secteur couvert, seules les zones entourant les ilots Shag et la Georgie du Sud ... Paper Title: On the presence of Paralomis spinosissima and Paralomis formosa in catches taken ... the archipelagos in the Scotia Sea. A total of 345 hauls was conducted, of which 29 took place around ... m. In the whole of the area surveyed, the two crab species of the genus Paralomis (P. spinosissima ... and P. formosa) were found only around Shag Rocks and South Georgia. P. spinosissima was caught in ...
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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Estimation of effective sample size for catch-at-age and catch-at-length data using simulated data from the Dirichlet-multinomial distribution
método iterativo de dos fases. El ESS será corregido en exceso si la falla del ajuste incluye un ... assessment model. Résumé L'intégration de la "taille effective d'un échantillon" (ESS pour effective sample ... size) dans les évaluations intégrées est un moyen approximatif mais simple de modéliser la ... distribution des fréquences d'âges ou de longueurs dans la capture selon une vraisemblance multinomiale en ... ‘effective sample size’ (ESS) in integrated assessments is an approximate but simple way of modelling the ... empirical coefficient of variation (CV) in the proportions, with one being based on an existing CV model ... accuracy in the following order: (i) the estimator based on the existing CV model; (ii) that based on the ... method. To account for process error in the calculation of the ESS, the lack of fit of the age-structured ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 115–138 : Author(s): Candy, S.G
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Age, growth and mortality of Patagonian toothfish (Dissostichus eleginoides) caught off Kerguelen
coupes transversales d’otolithes. La précision est mesurée sur les otolithes choisis au hasard dans des ... collections de référence; le biais relatif affi ché dans les données d’âge est estimé à –0.6 ans et la ... divergences dues à la capturabilité selon l’engin ou à des différences entre la population disponible et la ... profondeur ou la saison. Des clés âge–longueur ont été construites pour l’évaluation des captures de légine ... off Kerguelen in 1999 were estimated by reading transverse-sectioned otoliths. Randomly interspersed ... showed discrepancies due to gear-specific catchability, or differences in the available population with ... depth or season. Age–length keys were constructed for use in assessing toothfish catches made by ... mortality Z was estimated to be between 0.09 and 0.12. Significant differences in age-at-length data between ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 29–41 : Author(s): Ashford, J., G. Duhamel, C. Jones and S. Bobko
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The CCAMLR-2000 Krill Synoptic Survey: a description of the rationale and design
seleccionar las estaciones de arrastre y modificar 10s transectos si las trayectorias planeadas originalmente ... 5: Parametres utilises pour la projection gkographique. Tableau 6: Ordre d'klimination des transects en cas de ... PO Box 271, La Jolla, Ca. 92038, USA M. Naganobu and S. Kawaguchi National Research Institute ... . Description de la campagne CCAMLR-2000 d'evaluation synoptique du krill (campagne CCAMLR-2000). L'objectif ... krill which are used in models to estimate sustainable yield in Area 48. The survey design includes two ... large-scale oceanic strata: one in the southwest Atlantic located in the Scotia Sea, and the other to ... these large-scale strata, four mesoscale strata were included in the survey design; these were located ... and the planned cruise tracks for each of the four vessels participating in the survey are shown ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 1–23 : Author(s): Trathan, P.N., J.L. Watkins, A.W.A. Murray, A.S. Brierley, I. Everson, C. Goss, J. Priddle, K. Reid, P. Ward, R. Hewitt, D. Demer, M. Naganobu, S. Kawaguchi, V. Sushin, S.M. Kasatkina, S. Hedley, S. Kim and T. Pauly