Résultats de la recherche
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Seabird observations in Subareas 48.1, 48.2 and 88.3 and proposal for a new streamer line design
Abstract: A 43-day cruise on FV Tierra del Fuego took place in February and March 1997, as part ... of the New Fisheries Project developed by Chile in Statistical Subareas 88.3, 48.1 and 48.2. During ... this research study every measure currently in force was used to prevent incidental seabird mortality ... , carrying out bird observations in each one of the 52 castings with the Spanish-designed longlines as well ...
Meeting Document : WG-FSA-98/19
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REPORT ON AUSTRALIAN FISHING EFFORT AND SEABIRD BYCATCH IN FISHERIES OUTSIDE THE CONVENTION AREA
, and seabird bycatch mitigation measures in Australian fisheries outside the Convention Area. Mandatory ... seabird bycatch mitigation measures are in place in all longline fisheries within Australia's ... . Seabird bycatch is thought to be low in Australian trawl fisheries but, as yet, there are insufficient ... observer data to fully assess each trawl fishery. As part of efforts to better assess seabird bycatch in ...
Meeting Document : WG-FSA-08/37 Rev. 1 : Auteur(s): T. Hewitt and I. Hay (Australia)
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Pursuit of polynyas in the Antarctic peninsula area
influence biological activity. We pursued daily transition of coastal polynyas in the Antarctic Peninsula ... observations. A typical polynya existed off the tip of the Peninsula in 1987 and 1991. In the such years, sea ... and 1993. In the such years, polynyas did not existed. The typical polynya (nearly 500 x 200 km) in ... remarkably in several days. We speculated that annual variability of sea ice cover and consequently polynyas ...
Meeting Document : WG-EMM-97/69 : Auteur(s): Kimura, N., Shibazaki, K., Matsumura, S., Naganobu, M., Okada, Y.
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Distribution and abundance of larval fishes collected in the western Bransfield Strait region, 1986–87
samples collected in the western Bransfield Strait region during four RACER program cruises, December ... , and Trematomus scotti, numerically dominated the total catch. Two typically abundant species in this ... differences appear to be responsible for substantial shifts in species abundance relations between the two ... in hydrographic conditions may explain species dominance differences between the RACER samples and ...
Meeting Document : SC-CAMLR-VIII/BG/36 : Auteur(s): Delegation of USA
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Feasibility of trawl surveys to estimate abundance of juvenile toothfish in Subarea 88.1
conducting trawl surveys for juvenile toothfish in Subarea 88.1 (Ross Sea). Potential problems including a ... and previous research cruises. The major limitation on a trawl survey in the Ross Sea is ice cover. On ... average over the last three years, 63% of the seabed area from 0–600 m depth was not fishable in January ... % in 2002 to 89% in 2002. Less than 10% of the potential trawl survey area was fishable in all three ...
Meeting Document : WG-FSA-SAM-04/07 : Auteur(s): Wood, B.A., ODriscoll, R.L., Hanchet, S.M.
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Population assessment of Patagonian toothfish in the north of Subarea 48.4 – 2010 update
. eleginoides tagged and released in 2009/10, bringing the total to 1,547 in all seasons; There were 18 D ... . eleginoides tag recaptures in 2009/10, a total of 72 in all seasons; The length-frequency of 2009/10 captures ... . CASAL estimates a large recruitment event in early the early 1990s and faster growth rates than those ... currently assumed for the 48.3 population CASAL estimates of D. eleginoides population size in the North of ...
Meeting Document : WG-FSA-10/39 : Auteur(s): J. Roberts and D. Agnew (UK)
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Long-term study of the at-sea distribution of seabirds and marine mammals in the Scotia Sea, Antarctica
showed successive decreases in abundance. Five baleen whales where recorded: Humpback, Sei, Southern ... encounter rate in the five years (0.29 ± 1.57 whale/nautical mile), followed by Humpback whale (0.09 ± 0.54 ... ). Annual dissimilarity in abundance of both birds and cetaceans occurred in conjunction with changes in sea ... largest aggregations of all top predators (seabirds and cetaceans) were recorded mainly in two regions ...
Meeting Document : WG-EMM-14/06 Rev. 1 : Auteur(s): J.L. Orgeira, M. Alderete, Y.G. Jiménez and J.C. González (Argentina)
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Assessment models for Patagonian toothfish in research block 58.4.3a_1 of Division 58.4.3a, Elan Bank for the years 2005-2014
m) CASAL models for stock status assessments of Dissostichus eleginoides in the research block ... excluding the data from fish tagged in 2012. The likelihood profiles for tagged fish released in 2012 for ... ELAN_1 model reflected a large number of recaptures of the tags released concentrated in the western area ... of research block. This is why the removal of 2012 tag release data boosted the MPD estimate of B0 in ...
Meeting Document : WG-SAM-15/24 : Auteur(s): K. Taki (Japan), S. Mormede (New Zealand) and T. Ichii (Japan)
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Research plan for the 2016/17 exploratory longline fishery of Dissostichus spp. in Division 58.4.1
Abstract: The current season (2015/16) is the first one of the second three-season research in ... data-poor fisheries. In the present report, the next season research plan in Division 58.4.1 was made ... . population(s) in data- poor exploratory fisheries. During the second three-season research, we will continue ... current research style in the current research blocks for the next season research with the sample sizes ...
Meeting Document : WG-SAM-16/04 : Auteur(s): Delegation of Japan
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Research plan for the 2016/17 exploratory longline fishery of Dissostichus spp. in Division 58.4.2
Abstract: The current season (2015/16) is the first one of the second three-season research in ... data-poor fisheries. In the present report, the next season research plan in Division 58.4.2 was made ... . population(s) in data- poor exploratory fisheries. During the second three-season research, we will continue ... current research style in the current research blocks for the next research with the sample sizes ...
Meeting Document : WG-SAM-16/05 : Auteur(s): Delegation of Japan