Resultados de la búsqueda
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DEVELOPMENT AND IMPLEMENTATION OF AN ACCREDITATION FRAMEWORK FOR PARTICIPATION IN THE CCAMLR SCHEME OF INTERNATIONAL SCIENTIFIFC OBSERVATION
-conveners of the ad hoc Technical Group for At- Title: DEVELOPMENT AND IMPLEMENTATION OF AN ACCREDITATION ... Abstract: When establishing the ad-hoc Technical Group for At-Sea Operations (TASO), the ... Scientific Committee tasked it with the development of minimum standards to facilitate accreditation of ... observer programs participating in the CCAMLR SISO. At its 2009 meeting, TASO requested that the TASO co ...
Meeting Document : SC-CAMLR-XXVIII/BG/09 : Autor(es): Co-conveners of the ad hoc Technical Group for At-
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Analysis of dietary overlap in Antarctic fish (Notothenioidei) from the South Shetland Islands: no evidence of food competition
fish assemblages at the South Shetland Island area. Using tyler’s (1972) method, the reoccurrence of ... main and secondary prey among fish predators was 33% in summer and 37% over the year at Potter Cove; 25 ... % in summer and 7% in winter at Admiralty Bay; and 20% in autumn/winter around Elephant Island ... . Likewise, using the “S” index of Linton et al. (1981) the diet similarity between most species pairs is ...
Meeting Document : WG-FSA-03/13 : Autor(es): E. Barrera-Oro (Argentina)
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Distribution, biological characteristic and biomass of icefish from the results of inventory trawling survey carried out by STM-8390 Atlantida in January–March 2002
foraging. Champsocephalus gunnary 22-28 cm in length at the age of 2-3 predominated on all grounds of the ... Subarea, except the north-eastern part. During the survey, specimens 15 cm in length at the age of 2 ... at low stomach fullness. On the eastern shelf part, a considerable number of pre-spawning specimens ... Abstract: Results of the inventory trawling survey of icefish carried out by Russian vessel STM ...
Meeting Document : WG-FSA-02/79 : Autor(es): Zh.A. Frolkina and P.S. Gasiukov (Russia)
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Direct ageing of Antarctic krill (Euphausia superba) – potential utility of eyestalk sections for age determination
proof of concept study using several known age krill grown under controlled conditions at the Australian ... -analyse historical patterns of size at age, using archived samples, and to compare size at age among ... Abstract: We outline a method for the direct determination of age in Antarctic krill (Euphausia ... endocuticle layer of the eyestalks and gastric mill in decapod crustaceans. Here we report on a preliminary ...
Meeting Document : WG-EMM-15/45 : Autor(es): C. Reiss (USA), R. Kilada (Canada) and S. Kawaguchi (Australia)
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Estimation of the incidental capture of seabird species in commercial fisheries in New Zealand waters, 2001/02
Abstract: Ministry of Fisheries observers reported 851 seabird captures from observed fishing ... operations (93% dead). Observers recorded another 104 seabirds from unobserved parts of ling longline hauls ... . Observed squid (Nototodarus spp.) and hoki (Macruronus novaezelandiae) trawl fisheries accounted for 87% of ... (numbers of seabirds per observed fishing operation) in 2001–02, with seabirds reported caught from 26% of ...
Meeting Document : WG-FSA-04/56 : Autor(es): S.J. Baird (New Zealand)
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In situ observations of the scavenging fauna of the South Georgia slope
deployment at depths of 471-2235 m during research cruises in September 1997 and January 2000 and 2003. The ... absent from depths greater than 1800 m and temperatures less than 1.3 C. The arrival rate of crabs at the ... Abstract: The scavenging fauna of the South Georgia slope was investigated from 41 baited camera ... scavenging fauna was dominated by lithodid crabs, with Patagonian toothfish seen at most deployments. Other ...
Meeting Document : WG-FSA-03/76 : Autor(es): M.A. Collins, I. Everson, R. Patterson, P.M. Bagley, C. Yau, M. Belchier and S. Hawkins (United Kingdom)
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Manual: estimating the age of Patagonian toothfish (Dissostichus eleginoides) using transverse cross-sections of otoliths
nations participated in a Workshop in 2001 at Old Dominion Unversity with the primary aim of seeking ... Abstract: At the 2000 Fish Stock Assessment Working Group Meeting (WG-FSA-2000), differences were ... noted in the growth parameters being used for assessments of toothfish. To assess whether these ... differences were real or else due to methods of otolith preparation and reading, scientists from CCAMLR member ...
Meeting Document : WG-FSA-10/15 : Autor(es): K. Underkoffler, N. Ramanna and J. Ashford (USA)
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The effects of global climate variability in pup production of Antarctic fur seals
persistent high SST levels. Such anomalies at South Georgia were likely associated with low availability of ... -induced changes in the abundance of species in lower trophic levels can cascade up to apex predators by ... depressing vital rates. However, the characteristics and predictability of predator demographic responses ... remain largely unexplored. We investigated the delectability, limits, and nonlinearity of changes in ...
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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Oceanological factors affecting formation of mackerel icefish aggregations in the South Georgia area during different seasons of the year
disperse at the depths more than 250 m within rather narrow temperature range (1.6-1,7ºC). In this period ... feeding at the water temperature from 0.0ºC to 1.9ºC in the South Georgia area and to 2.0ºC near Shag ... Rocks. High level of energy exchange, intensive supply of food allow fish to distribute in the wider ... depths and temperature range. Taking in account the fact that in other habitats icefish occur at the ...
Meeting Document : WG-FSA-05/76 : Autor(es): Zh.A. Frolkina (Russia)
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Reasons of differences between distribution and density of mackerel icefish (Champsocephalus gunnari) aggregations in the South Georgia area during summer and autumn periods in different years from the bottom trawl survey data
the largest aggregations of food organisms are concentrated at the beginning of the spring period ... . Icefish concentrations were detected at the periphery of a cyclonic meander or in the centre of the ... vertical migrations by foraging fish. All physiological processes of icefish begin to recede at such a ... anticyclonic circulation formed by the Weddell waters. Confinement of the fish to the boundary of water masses ...
Meeting Document : WG-FSA-05/77 : Autor(es): Zh.A. Frolkina (Russia)