Résultats de la recherche
-
Estimating optimal observer coverage in the Antarctic krill fishery
by-catch. A partial coverage sampling program has been implemented in South Georgia since 2002 ... on board for about 30% of that season. They have achieved a rate of krill sampling equivalent to 18 ... the Scientific Committee will have sufficient data to determine appropriate sampling strategies in a ... larval fish by-catch. A partial coverage sampling program has been implemented in South Georgia since ... been present on board for about 30% of that season. They have achieved a rate of krill sampling ... sampling strategies in a particular area. Résumé Les données collectées dans le cadre du Système ... international d'observation scientifique de la CCAMLR sur les chalutiers conventionnels à krill en pêche en ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 139–154 : Auteur(s): Agnew, D.J., P. Grove, T. Peatman, R. Burn and C.T.T. Edwards
-
Analysis of variability of krill size and fish by-catch in the Japanese krill fishery based on scientific observer data
. Observer datasets from the Japanese krill fishery from 1995 to 2008 were analysed using a hierarchical ... and haul) based on a state–space model, separating biological process error in the population dynamics ... statistical precision required for the specific objective of a study that includes consideration of the cost ... a single snapshot survey may not provide sufficient information for management. For exam- ple, the ... change on krill recruitment variability, and agreed that a full review of the influence of recruit- ment ... necessary to undertake ecosystem monitoring at a broad spatio–temporal scale. Un- dertaking broad-scale ... surveys using scientific research vessels in the Antarctic has a range of practical and economic ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 31–47 : Auteur(s): Okuda, T. and M. Kiyota
-
Factors to consider in developing management measures for krill
/ Description: A brief review of the objectives of the Convention for the Conservation of Antarctic Marine ... outlined. Some interim management measures are suggested which could be implemented while a more generally ... MANAGEMENT MEASURES FOR KRILL W.K. de la Mare>l< Abstract A brief review of the objectives of the ... are suggested which could be implemented while a more generally applicable management is being ... peche par a-coups et l'utilisation de l'ouverture et de la fermeture de zones et de periodes sont ... tracees. Plusieurs mesures de gestion interimaires, pouvant etre mises a execution en attendant le ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 175–187 : Auteur(s): de la Mare, W.K.
-
Characteristics of krill swarms from Prydz Bay
CCAMLR.AUS dataset available to the Subgroup on Survey Design was derived from a survey of Prydz Bay ... inter-swarm length were calculated for swarms of euphausiids encountered along a 78 km transect over the ... Subgroup on Survey Design was derived from a survey of Prydz Bay, Antarctica, in December 1990. Swarm ... calculated for swarms of euphausiids encountered along a 78 km transect over the continental shelf close to ... essaims d'euphausiaces rencontres le long d'un transect de 78 km sur le plateau continental a proximite ... du site d'etude du CEMP a l'1le Magnetic, on a calcule la longueur, la profondeur, l'epaisseur ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 177–189 : Auteur(s): Agnew, D.J. and I.R. Higginbottom
-
Standardization of fishing effort for Champsocephalus gunnari in the South Georgia area (Subarea 48.3)
inflexible in its use of data types and has no estimate of accuracy. A standardized CPUE index for ... Champsocephalus gunnari fishing in Subarea 48.3 is derived using a multiplicative model and data from many ... accuracy. A standardized CPUE index for Champsocephalus gunnari fishing in Subarea 48.3 is derived using ... a multiplicative model and data from many different classes (countries, types of vessel, fishing ... Ha eAHHHI.-\Y npOMbICJIOBOrO YCHJIH5.I HeH3MeHHO HCnOJIb3YIOTC5.I O~HH H Te :>Ke THnbI ~aHHbIX, a ... nYTeM HCnOJIb30BaHH5.I MYJIbTHnJIHKaTHBHoti MO~eJIH H ~aHHbIX wHpoKoro p5.l~a KJIaCCOB (cTpaHbI ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 327–336 : Auteur(s): Gasiukov, P.S.
-
The role of fish as predators of krill (Euphausia superba) and other pelagic resources in the Southern Ocean (submitted to the 2008 Joint CCAMLR-IWC Workshop)
the low Antarctic were made in the late 1970s/early 1980s. Those estimates were constrained by a ... , such as in the Atlantic sector, there can be a lack of precision in trawl and hydroacoustic surveys ... patterns that have emerged in Southern Ocean ecosystems in the course of the 20th century. As a first step ... towards a modelling approach to include fish in krill-based food-web models, it is suggested to ... means a pristine environ- ment. Human exploitation of the Southern Ocean started some 225 years ago ... removed on a large scale (Kock, 2007). More recent exploitation has targeted medium trophic levels ... a range or whether they exhibited apparent trends is unknown. Many predators either leave the ... pack-ice zone, is considered as a network of dynamic systems centred around krill. There is ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 115–169 : Auteur(s): Kock, K.-H., E. Barrera-Oro, M. Belchier, M.A. Collins, G. Duhamel, S. Hanchet, L. Pshenichnov, D. Welsford and R. Williams
-
Variations in echosounder calibration with temperature, and some possible implications for acoustic surveys of krill biomass
biomass by acoustic techniques is dependent on a number of factors of which one of the most fundamental is ... average 1.4 dB less than in European waters (16.6 o C), and a similar trend was detected at 38 kHz. If ... estimation of temperature variation across a survey area should be considered carefully File: 16brierley ... C C A M L R Science, Vol. 5 (1998): 273-281 SHORT NOTE ... Abstract Accurate estimation of krill biomass by acoustic techniques is dependent on a number of factors ... (16.6"C), and a similar trend was detected at 38 kHz. If European calibration parameters were to be ... across a survey area should be considered carefully. Resume L'estimation precise de la biomasse de ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 273–281 : Auteur(s): Brierley, A.S., C. Goss, J.L. Watkins and P. Woodroffe
-
Trends in population size and breeding success at colonies of macaroni and rockhopper penguins, Marion Island, 1979/80–1995/96
three colonies was a negative correlation between two adjacent colonies, which suggests inter-colony ... breed may have varied as a result of some environmental signal. Inter-season trends in breeding success ... success of macaroni penguins may be influenced by a wider-scale phenomenon than is applicable to ... was a negative correlation between two adjacent colonies, which suggests inter-colony transfer. The ... have varied as a result of some environmental signal. Inter-season trends in breeding success of ... macaroni penguins may be influenced by a wider-scale phenomenon than is applicable to rockhopper penguins ... factors influencing the reproductive performance of the two species are not the same. Resume Mesure a ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 89–103 : Auteur(s): Cooper, J., A.C. Wolfaardt and R.J.M. Crawford
-
Brief report of the joint Soviet-Australian expedition of the USSR FRV Professor Mesyatsev to the Australian fishing zone around the territory of Heard and McDonald Islands, May-August, 1987
unique character of Heard’s population of C. gunnari was determined according to a number of biological ... and morphological parameters. A preliminary stock assessment of the detected aggregation of C. gunnari ... was determined according to a number of biolog~ and morphological parameters. A preliminary stock ... continental de Heard etaient favorables a la formation de concentrations commerciales de Champsocephalus ... du milieu. Le caractere unique de la population de C. qunnari a Heard a ete determine d'apres un ... primera expedicion conjunta sovietico-australiana a la Zona Pesquera Australiana alrededor de las islas ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 75-103 : Auteur(s): Gherasimchook, V.V., V.N. Brodin, A.V. Kljausov, I.B. Russelo, P.V. Tishkov and N.B. Zaremba
-
Antarctic krill and ecosystem management – from Seattle to Siena
/ Description: This paper outlines CCAMLR’s development of a management approach for the Antarctic krill ... approach developed in order to calculate a precautionary catch limit for the krill fishery in various ... outlines CCAMLR’s development of a management approach for the Antarctic krill (Euphausia superba) fi ... to calculate a precautionary catch limit for the krill fi shery in various CCAMLR statistical areas ... antarctique (Euphausia superba) et des éléments connexes de l’écosystème de 1984 à 1995. Il est démontré que ... que le sont les délibérations du Groupe de travail sur le krill (WG-Krill). La modélisation visant à ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 175–212 : Auteur(s): Miller, D.G.M