Resultados de la búsqueda
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Entanglement of Antarctic fur seals Arctocephalus gazella in man made debris at Signy Island, South Orkney Islands 1999/2000
seals wearing neck collars of man-made debris. One additional sighting was of an animal that had been ... second lowest recorded, a decrease of 20% compared to the previous year. At Bird Island, packaging bands ... Island,South Orkney Islands are reported for the 1999/2000 summer season. There were five sightingsof ... decreased (by 42%) since 1998/99. Over the past four years, fluctuations in the incidence of entanglement ...
Meeting Document : SC-CAMLR-XIX/BG/03 : Autor(es): Delegation of the United Kingdom
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Zooplankton target strength: volumetric or areal dependence?
acoustic backscattering on animal volume or area was tested by fitting regression lines for TS versus the ... MHz and the dependence of these data on animal volume versus cross-sectional area was explored The 420 ... cylindrical radius). The theoretical models chosen for this comparison were two versions of a high-pass bent ... -cylinder model (Stanton, 1989b) that indicate TS is dependent on animal volume, and the ray bent-cylinder ...
Meeting Document : WG-Krill-94/13 : Autor(es): D.A. Demer and L.V. Martin (USA)
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Fish prey of the wandering albatross Diomedea exulans at South Georgia
. It seems unlikely, therefore, that the albatrosses depend. greatly on the fishery for acquisition of ... regurgitations. These provide the first quantitative data for this species and for any albatross. By number of ... (35%), Muraenolepis microps (33 %) and Chaenocephalus acemtus (20%) predominated, with Notothenia ... gibberifrons, Pagothenia hansoni and Champsocephalus gunnari (together 12%) also present. Composition by weight ...
Meeting Document : SC-CAMLR-VII/BG/05 : Autor(es): J.P. Croxall, A.W. North and P.A. Prince (United Kingdom)
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Entanglement of Antarctic fur seals in marine debris at Cape Shirreff and San Telmo Islets, Livingston Island, Antarctica: 1988–1997
biota, specially over individuals of A. gazella, and for this purpose we present as an annex to the ... document, a form for its completion by every Antarctic base, refuge, or camp present in the mentioned area ... results indicate that 45% of the entanglement material found in a total of 20 individuals (nine subadult ... males, four juvenile males, five females, and two pups) corresponded to plastic debris and synthetic ...
Meeting Document : SC-CAMLR-XVI/BG/33 : Autor(es): Delegation of Chile
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Length-age composition of the Patagonian toothfish, Dissostichus eleginoides, from the Kerguelen Island area
this period were located in the west shelf area (48°30’- 49°30’S and 66°50’- 67°20’E). Total catch was ... fluctuate considerably, mean fish length was 76.0- 86.6 cm. Fish of two to 14 years old age groups were most ... abundant in catches, mean age was 8.2- 9.8 years. In the 1991/92 season fishing for the species was ... concentrated in the north shelf area (47°10’- 47°30’S and 66°50’- 67°20’E). Total catch was about 5.2 x 103 ...
Meeting Document : WG-FSA-92/08 : Autor(es): V.G. Prutko and V.N. Chikov (Ukraine)
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A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997–98 to 2013–14
12 years with a slight decline in the past two years. Length frequency distributions of Antarctic ... Abstract: This report summarises the timing, depth, and location of fishing together with the ... biological aspects and catch of Antarctic toothfish up to an including the 2014 season. In 2014, the Ross Sea ... . As in recent years, the remaining catches came mainly from SSRUs 88.1C, 88.1J, and 88.2H ...
Meeting Document : WG-FSA-14/52 : Autor(es): M. Stevenson, S. Hanchet, S. Mormede and A. Dunn (New Zealand)
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Annual variation in breeding biology of gentoo penguins, (Pygoscelis papua) at Bird Island, South Georgia
-3.4 days. Chicks creched when 25-30 days old. and this varied between years. possibly related to food ... breeding population at Bird Island decreased by 20% and increased by 84% in successive years during the ... colonies, but for the whole island was very consistent over the three years: 0.45, 0.51 and 0.47. Overall ... or breeding experience. Laying date varied significantly between all three years, being three weeks ...
Meeting Document : WG-CEMP-90/38 : Autor(es): T.D. Williams (United Kingdom)
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Entanglement of Antarctic fur seals Arctocephalus gazella in man-made debris at Bird Island, South Georgia during the 1992 winter and 1992/93 pup-rearing season
winter an unprecedented number of 97 entangled seals were seen, a ten-fold increase on the previous two ... disturbing, particularly following two years of relatively low incidence. It cannot be accounted for by ... Abstract: Surveys of Antarctic fur seals entangled in man-made marine debris were carried out for ... years and with twice as many seals suffering serious injuries. Almost all animals involved were juvenile ...
Meeting Document : SC-CAMLR-XII/BG/06 : Autor(es): Delegation of United Kingdom
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The toothfish fishery in Subareas 88.1 and 88.2 from 1997/98 to 2002/03: New Zealand vessel summary
six seasons in Subarea 88.1 and for two seasons in Subarea 88.2. A large amount of data on both ... Abstract: An exploratory fishery for Antarctic toothfish (D. mawsoni) has been in operation for ... addition, SSRU 882E was fished for the first time. Ninety-two fine scale rectangles (FSRs), including 57 ... converted to catch-at-age. Fish aged from 13 to 30 years dominated the catch. No progressions of any ...
Meeting Document : WG-FSA-03/44 : Autor(es): M.L. Stevenson, S.M. Hanchet and P.L. Horn (New Zealand)
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Development of the Southern Ocean Continuous Plankton Recorder survey
the 1925–1927 Discovery Expedition, and has been used successfully for 70 years to monitor plankton in ... serve as an important temporal reference for measuring long-term interannual variability and to help ... schedule, travelling south on 110°E in early December and north on 150°E in mid-March each year, and will ... the North Sea and North Atlantic Ocean. Sixty-five years later the CPR as a Type II version returned ...
Meeting Document : WS-BSO-07/P4 : Autor(es): Hosie, G., M. Fukuchi and S. Kawaguchi