Resultados de la búsqueda
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Recent information relevant to squid resources in the Convention Area
adjacent to the Convention Area, with a catch in excess of 12,000 tonnes. Recent improvements in processing ... Frontal Zone are presented in SC/CAMLR/BG/??. Author(s): Delegation of the United Kingdom Title: Recent ... waters. Although regulations for fishing of squid in nearby waters provide a useful model framework ... , management of a Martialia fishery by CCAMLR would require a better understanding of the distribution and ...
Meeting Document : SC-CAMLR-XIV/BG/22 Rev. 1 : Autor(es): Delegation of the United Kingdom
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Has climate change promoted genetic fragmentation in the ice-dependent fish Pleuragramma antarcticum?
anti-clockwise Coastal Current, than in the opposite direction. Reduced level of gene flow along the ... in the central region of the western AP for two consecutive years, all suggest that this sea-ice ... pelagic life cycle and plays a major trophic role in the coastal Antarctic marine ecosystem. A previous ... genetic study investigated the population structure of this species, but used mitochondrial DNA sequencing ...
Meeting Document : WG-FSA-13/67 : Autor(es): C. Agostini, T. Patarnello (Italy), J. Ashford, J. Torres (USA) and L. Zane (Italy)
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Improvements to the multiple-frequency method for in situ target strength measurements
to improve the accuracy and precision of in-situ target strength (TS) measurements using split-beam ... integer multiples of each other. In this study, the method itself was improved by: 1) optimizing the ... improves the rejection of unresolvable and constructively interfering target multiples by combining ... accuracy and precision of the angular and range measurements of the individual frequency detections; 2 ...
Meeting Document : WG-EMM-99/38 : Autor(es): D.A. Demer (USA) and M.A. Soule (South Africa)
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Changes in the fish biomass around Elephant Island (Statistical Subarea 48.1) from 1976 to 1996
been exploited from 1978179 to 1988189 with most of the commercial harvesting taking place in the first ... two years of the fishery. Results of bottom trawl surveys conducted by Germany in the vicinity of ... Elephant Island in the 1980s showed that stocks of Champsocephalus gunnari, Notothenia rossii ... . Given the low abundance of C. gunnari and other species and the difficulties in managing fisheries which ...
Meeting Document : WG-FSA-97/27 : Autor(es): Kock, K.-H.
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Predicting changes in the Antarctic krill Euphausia superba population at South Georgia
the abundance and population structure of krill in 1998 and the consequences for predators. Consistent ... biomass and low predator reproductive performance. The change in modal size of krill, from 56 mm in ... December to 42 mm in March was apparently a result of the transport of krill into the region. This is the ... Abstract: Variability in the Southern Ocean is frequently reflected in changes in the abundance ...
Meeting Document : WG-EMM-99/37 : Autor(es): K. Reid, K.E. Barlow, J.P. Croxall and R.I. Taylor (UnitedKingdom)
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Factors influencing Antarctic krill distribution in the South Shetlands
Abstract: The influences of biological and physical factors in the environment upon krill ... (Euphausia superba) distribution were studies in the area north of South Shetland Islands during 1990/91 ... . Hence, higher diatom biomass may be one of factors forming krill concentrations in the inshore and ... further discussed why the change in spatial distribution of krill occurs from early to late summer. Author ...
Meeting Document : WG-KRILL-93/38 : Autor(es): T. Ichii, H. Ishii and M. Naganobu (Japan)
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Rockhopper penguins and other marine life threatened by driftnet fisheries in the south Atlantic ocean
. Relatively little is known about the areas of operation and impacts of driftnetting in the South Atlantic as ... . This paper reviews the impact of the driftnet fishery on non-target species in the central South ... Abstract: The oriental driftnet fleet, which is responsible for the large scale mortality of non ... -target species in the Pacific Ocean, has extended its range to include the South Atlantic Ocean ...
Meeting Document : CCAMLR-IX/BG/05 : Autor(es): Delegation of South Africa
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The toothfish fishery in Subareas 88.1 and 88.2 from 1997/98 to 2002/03: New Zealand vessel summary
is to present the analysis of data collected in the toothfish fishery for the 2003 season (this is ... presence of the huge C2 iceberg severely altered the fisher's behaviour in 2003. The vessels were ... . The catch of D. mawsoni was about 1070 t, and contributed 89% of the total catch in 2003. They were ... caught in over 90% of the sets in all five SSRUs fished. They were the dominant catch in all sets apart ...
Meeting Document : WG-FSA-03/44 : Autor(es): M.L. Stevenson, S.M. Hanchet and P.L. Horn (New Zealand)
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Krill (Euphausia superba) distribution in relation to water movement and phytoplankton distribution off the northern South Shetland Islands
Abstract: The waters in the vicinity of the South Shetland Islands and Elephant Island were ... biomass of krill in the 1990/91 austral summer. Main krill concentrations occurred in the shelf waters ... frequently occur), have elucidated the occurrence of convergent complex eddies in these shelf waters. (Note ... ground for krill.) High concentrations of chlorophyll a were also measured in the shelf waters, showing a ...
Meeting Document : WG-KRILL-91/22 : Autor(es): Delegation of Japan
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Pleuragramma antarcticum distribution in the Ross Sea during late austral summer 2013
Pleuragramm antarcticum, including confirmation of the first known nursery ground in Terra Nova Bay. However ... the central Ross Sea and one location in the far south of the eastern Ross Sea (in the Bay of Whales ... ). Larval P. antarcticum made up more than 99% of the icthyoplankton in the western Ross Sea. Most of these ... Bay. The most numerous abundances (3400+ in each tow) of larval P. antarcticum were found along the ...
Meeting Document : WG-EMM-14/38 : Autor(es): C. Brooks and K. Goetz (USA)