Resultados de la búsqueda
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Acoustic survey design to estimate krill biomass in Subareas 48.1, 48.2 and 48.3
Abstract: The Scientific Committee has requested advice on the feasibility of conducting a ... synoptic survey of krill biomass in Statistical Area 48. Example calculations are presented for estimating ... 1.25 ship-months of survey effort can provide an estimate of krill biomass in Subareas 48.1, 48. 2 and ... 48.3 with a CV of 20%. Author(s): Hewitt, R.P., Watters, G. Title: Acoustic survey design to estimate ...
Meeting Document : WG-EMM-95/71 : Autor(es): Hewitt, R.P., Watters, G.
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Analysis of the diet of Champsocephalus gunnari in Subarea 48.3, Dr E. Holmberg survey, February 1995
empty stomachs (also at Shag Rocks), close to the values reported for years of krill scarcity. While no ... krill availability indicated by frequency of occurrence, but, on the other hand, high proportions of ... , an acoustic survey carried out in the same area in March 1995 detected such aggregations. It is ... suggested that krill availability for C. gunnari around South Georgia in the 1995 summer season, was ...
Meeting Document : WG-FSA-95/36 : Autor(es): Marschoff, E., Barrera-Oro, E., Casaux, R.
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The effects of global climate variability in pup production of Antarctic fur seals
reductions in Antarctic fur seal pup production over 20 years of study. Simulated environmental time series ... Antarctic fur seal pup production at South Georgia over a 20-year period in response to environmental ... Abstract: Climate variability has strong effects on marine ecosystems, with repercussions that ... suggested that the effect of anomalies on Antarctic fur seals was only detectable within a narrow range of ...
Meeting Document : WG-EMM-06/P2 : Autor(es): J. Forcada, P.N. Trathan, K. Reid and E.J. Murphy (United Kingdom)
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Status of the krill stock around Elephant Island in 1991/92 and 1992/93
austral summers of 1991/92 and 1992/93 are described and compared with information from previous years ... other years appears to be associated with female maturity development and spawning during the early ... . The length frequency distributions and maturity stage composition reflected relatively good year class ... success from the 1990/91 spawning season but poor success from 1991/92. Year class success from these and ... major difference between the two years was the abundance of salps (Salpa thompsoni - Table 1 ... . Loeb and Siege1 (Dlink/Dmax) *l00 Variable 1---10---20---30---40---50---60---70---80---90---~00 ST ... ST-4 3 ST-59 -7 ST-58 -L ST-71 ST-4 4 ST-72 (Dlink/Dmax)*100 Variable 1---10---20---30---40 ... (clusters 1 to 3) during January 1992. Cluster 1 N = 863 10 15 20 25 30 35 40 45 50 55 6 0 Total ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 7–33 : Autor(es): Loeb, V. and V. Siegel
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Texto del sistema de inspección de la CCRVMA
present in the Convention Area for the purpose of harvesting or conducting scientific research on marine ... accordance with this system. (b) On boarding a vessel, an Inspector shall present the document described ... for identifying fishing gear that has been judged by an Inspector to be contrary to standards set by ... I. Each Member of the Commission may designate Inspectors referred to in Article XXIV of the ...
Document : Site Section: Publications
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Some specific features of the USSR krill fishery and possibilities of applying fishery statistics to studies of krill biology and stocks
the vessel rather than with krill abundance in a certain area. During preparations for regular fishing ... operations very short hauls (under 15 minutes) are practised. Such fishing practice, together with ... -term behaviour patterns have an impact. All these factors limit the extent to which CPUE can be used in ... instrument for studies. File: 04-Dolzhenkov-et-al.pdf ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 237–252 : Autor(es): Dolzhenkov, V.N., T.G. Lubimova, R.R. Makarov, S.S. Parfenovich and V.A. Spiridonov
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Age and growth of Antarctic euphausiacea (crustacea) under natural conditions
Peninsula and the south-eastern Weddell Sea. Life spans range from two years for Euphausia frigida to six ... years for the krill Euphausia superba. Growth in length and weight was calculated by non-linear ... eastern Weddell Sea. Former opinions that differ are discussed. Seasonal growth was re-analyzed for the ... spawn at least twice and in some cases three times during their life, except for E. frigida which spawns ... south-eastern Weddell Sea. Life spans range from two years for Euphausia frigida to six years for the ... . Former opinions that differ are discussed. Seasonal growth was re-analyzed for the species Euphausia ... least twice and in some cases three times during their life, except for E. frigida which spawns only ... triacantha, and a three-year life span proposed. Male Euphausia cr¥stallorophias have a shorter life span ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 369-370 : Autor(es): Siegel, V.
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WG-FSA-10
Proposal for an extension to the mark-recapture experiment to estimate toothfish population size in the ... -10/44 Brief report on results of experimental harvest regime for the exploratory fishery for crab in ... -10/P06 Estimating the impact of depredation by killer whales and sperm whales on longline fishing for ... Rev. 1 Evaluating the impact of multi-year research catch limits on overfished toothfish populations ...
Meeting
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A CHARACTERISATION OF THE TOOTHFISH FISHERY IN SUBAREAS 88.1 AND 88.2 FROM 1997/98 TO 2008/09
Abstract: The exploratory fishery for Dissostichus spp. has now been operating for 13 years in ... Subarea 88.1 and for 8 years in Subarea 88.2. During that time a large amount of distributional and ... biological data has been collected on toothfish and the associated bycatch. The purpose of this report is to ... steadily increased over the first seven years of the fishery but has since stabilised at about 1000–1200 m ...
Meeting Document : WG-FSA-09/36 : Autor(es): S.M. Hanchet, A. Dunn and S. Mormede (New Zealand)
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Defining predator foraging ranges, illustrated using Adélie penguin foraging tracks from Mawson coast
addressed in answering that question. The proposed method for defining foraging ranges is based on an ... effort and this is used to delineate a feeding ground for Adélie penguins on the Mawson coast in eastern ... Antarctica. This method builds on existing methods but incorporates tools for pooling information across ... approach used to define fishing grounds. The data which is considered as an example here consists of ...
Meeting Document : WG-EMM-02/41 : Autor(es): I.R. Ball, A.J. Constable, J. Clarke and L. Emmerson (Australia)