Resultados de la búsqueda
-
OTOLITH-BASED AGEING OF THE PATAGONIAN TOOTHFISH (DISSOSTICHUS ELEGINOIDES) FOR THE HEARD AND MCDONALD ISLANDS: MODELLING FIXED AND RANDOM READER ERROR USING MULTIPLE READINGS OF A REFERENCE COLLECTION
resulting from the imprecision of age determination using annual ring counts from otoliths. This paper ... assessment using repeat readings by 4 readers of a set of 203 reference otoliths sampled from the HIMI ... fishery. The methods of sampling, preparing, reading, and modelling random reader error for this reference ... set of otoliths are described. A total of 933 readings were taken and errors were defined as the ...
Meeting Document : WG-SAM-09/07 : Autor(es): S.G. Candy, G.B. Nowara, D.C. Welsford and J.P. McKinlay (Australia)
-
The state of exploited fish stocks in the Atlantic sector of the Southern Ocean
Abstract: Finfish have been harvested in the Atlantic sector of the Southern Ocean since the end ... of the 1960s mainly by the Soviet Union. Notothenia rossii marmorata,vas the target species in the ... Patagonotothen brevicauda guntheri. Catches of C. gunnari were highest at about 240,000, 220,000 and 100,000 ... adversely affected by the fishery. The present stock size around South Georgia is less than 5 % of the level ...
Meeting Document : SC-CAMLR-VIII/BG/18 : Autor(es): Delegation of Federal Republic of Germany
-
THE ROSS SEA ANTARCTIC TOOTHFISH FISHERY: REVIEW OF THE 3-YEAR EXPERIMENT AND DEVELOPMENT OF MEDIUM-TERM RESEARCH OBJECTIVES AND AN OPERATIONAL FRAMEWORK FOR THE FISHERY
Abstract: The aim of this paper is to review the recent management of the Ross Sea toothfish ... framework to achieve those objectives. The paper focuses primarily on Antarctic toothfish, as catches of ... fishery over the next 5–7 years in relation to Article II of the Convention, and to develop an operational ... operational management and conduct of the fishery up to the 2004–05 fishing year (prior to the start of the 3 ...
Meeting Document : WG-FSA-08/50 : Autor(es): Delegation of New Zealand
-
Some specific characteristics of Dissostichus eleginoides biology in the vicinity of the Kerguelen Islands (Division 58.5.1)
present paper. Regular direct distribution of size groups D. eleginoides in depth range within the fishing ... Abstract: For recent years Dissostichus eleginoids is the main target species of trawling and ... long-line fisheries in the vicinity of the Kerguelen Islands. Results of research made by the author on ... area on the northern slope of shelf was revealed. Difference in feeding spectrum of these groups was ...
Meeting Document : WG-FSA-96/16 : Autor(es): Pshenichnov, L.K.
-
Preliminary analyses of data collected during experimental phases of the 1994/95 and 1995/96 Antarctic crab fishing seasons
Abstract: Data collected from the FN American Champion during Phases 1 and 2 of the experimental ... generalized additive models show that the density of fishable P. spinosissima is highest off the northern ... coast of South Georgia and at depths between about 100 and 300 fathoms. The Phase 1 results suggest that ... it would not be appropriate to extrapolate local estimates of abundance to the whole of Subarea 48.3 ...
Meeting Document : WG-FSA-96/34 : Autor(es): Watters, G.
-
CCAMLR ecosystem monitoring program standard methods: determination of sex of Adelie penguins
Abstract: The suggestion that sex of Adélie penguins, Pygoscelis adeliae, might be assigned by ... observing which member of the pair (the male) takes the first long incubation shift (Anon. 1991) was ... examined for each of the 1990–91, 1991–92 and 1992–93 breeding seasons. There was an 8- or 9-day period ... when more than 90% of the incubating birds were male and a 6- or 7-day period when more than 90% of the ...
Meeting Document : WG-CEMP-94/08 : Autor(es): K.R. Kerry, J.R. Clarke and G.D. Else (Australia)
-
Development of a fine-scale model of land-based predator foraging demands in the Antarctic
Abstract: The CCAMLR Secretariat has been requested to provide annual calculations of the catch ... of krill within the critical period-distance of land-based predators in Subareas 48.1 and 48.2 (100km ... from colonies, December- March). This index of the overlap of predators and the fishery is unsuitable ... for a number of reasons. An alternative method of calculating an index of fishery-predator interaction ...
Meeting Document : WG-Joint-94/08 : Autor(es): D.J. Agnew and G. Phegan (Secretariat)
-
Dynamics of abundance and state of Notothenia rossii rossii stocks on the Kerguelen Island shelf
Abstract: Population structure and dynamics of the abundance of Notothenia rossii rossii on the ... Kerguelen Island shelf from the beginning of the fishery to 1984 has been examined.Total and commercial ... stocks of this species have been determined proceeding from data of inventory trawl survey and ... calculation by mathematical modelling.Comparative estimates of the abundance and recruitment-remainder ratio ...
Meeting Document : WG-FSA-90/41 : Autor(es): P.B. Tankevich and V.A. Shlyakhov (YugNIRO, USSR)
-
Ross Sea Bioregionalisation, Part II: Patterns of co-occurrence of mesopredators in an intact polar ocean ecosystem
Abstract: We report results of analyses of niche occupation among mesopredators in the Ross Sea ... the surface of the ocean, 2) capacity to utilize differing amounts of the water column (foraging depth ... because of their rarity and, therefore, lack of adequate sighting data on which to generate spatial models ... (Maxent) was used to model spatial patterns of species’ probabilities of occurrence, and these data were ...
Meeting Document : WG-EMM-10/12 : Autor(es): G. Ballard, D. Jongsomjit and D.G. Ainley (USA)
-
Development of methods for evaluating the management of benthic impacts from longline fishing using spatially explicit production models
Abstract: An important management objective for CCAMLR in the high seas region of the Antarctic ... is to develop appropriate methods of monitoring and managing impacts of bottom fisheries on ... investigate a range of simple scenarios for simulating the effect and management of benthic impacts from ... longline fishing effort. Simulations were carried out under a range of productivity assumptions, impact ...
Meeting Document : WG-SAM-10/19 : Autor(es): A. Dunn, S.J. Parker and S. Mormede (New Zealand)