Resultados de la búsqueda
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Multiple acoustic estimates of krill density at South Georgia during 2000/2001 reveal significant intra-annual and spatial variability
early- and late-season surveys were associated with logistic support voyages to South Georgia and were ... that is consistent with observations from previous years, krill density in the western box mid-season ... around South Georgia in the 2000/2001 season: in October 2000 (early-season); during late December ... / early January 2000/2001 (mid-season), and in March 2001 (late-season). The surveys were the first in a ...
Meeting Document : WG-EMM-01/15 : Autor(es): A.S. Brierley, C. Goss, S.A. Grant, J.L. Watkins, K. Reid, M. Belchier, I. Everson, M.J. Jessop, V. Afanasyev and J. Robst (United Kingdom)
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Adélie penguin foraging behaviour and breeding success in seasons of contrasting krill availability (Mawson Coast, Antarctica)
particularly apparent during the late guard to early crèche stages of chick rearing, coinciding with the timing ... differences between the two seasons included A5: foraging trip duration, A6: breeding success and A8: meal ... to the diet in 2003 but was only a minor component in 2001. Differences between years were ... period. Data on meal mass and foraging trip duration were combined to provide an index of provisioning ...
Meeting Document : WG-EMM-03/44 : Autor(es): J. Clarke, M. Tierney, S. Candy, S. Nicol, L. Irvine and K. Kerry (Australia)
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Differences in distribution and population structure of krill (Euphausia superba) between penguin and fur seal foraging areas near Seal Island
Seal Island were conducted to identify and evaluate their foraging areas during early January 1990/91 ... . 2-3 km in horizontal distance) of higher densities (≥250g/m2). In the inshore foraging areas krill ... , in the inshore foraging areas middle-sized krill (modal length 43 mm), which consisted mainly of ... nongravid krill, were dominant with occasional occurrences of juveniles (modal length 21 mm). In contrast ...
Meeting Document : WG-KRILL-92/27 : Autor(es): T. Ichii, H. Ishii (Japan), J.L. Bengtson, P. Boveng, J.K. Jansen (USA) and M. Naganobu (Japan)
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Physical forcing in the southwest Atlantic: ecosystem control
temperature anomalies at lag periods of approximately 3 to 4 years. Crosscorrelation analyses with temperature ... temperature fluctuations in the Pacific, with the Pacific leading South Georgia by approximately 3 years ... periods appear to be prior to the breeding season during the summer and early autumn of the preceding year ... physical environment has been recorded since the early part of the last century. For example, ocean ...
Meeting Document : WG-EMM-04/34 : Autor(es): P.N. Trathan, E.J. Murphy, J. Forcada, J.P. Croxall, K. Reid and S.E. Thorpe (United Kingdom)
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Investigation of the sensitivity of the Ross Sea toothfish assessment to withholding subsets of the available data
years, the change in estimated biomass arising from withholding data was much smaller, with values ... removing up to four years of the early tag data had little effect on the estimate of the initial biomass ... the effect of not updating an assessment every year, and also the evolution of stock assessments with ... assessments, when each extra year of withheld data represented a large contribution to the model. In later ...
Meeting Document : WG-SAM-11/17 : Autor(es): S. Mormede (New Zealand)
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Development of the Southern Ocean Continuous Plankton Recorder survey
the North Sea and North Atlantic Ocean. Sixty-five years later the CPR as a Type II version returned ... schedule, travelling south on 110°E in early December and north on 150°E in mid-March each year, and will ... the 1925–1927 Discovery Expedition, and has been used successfully for 70 years to monitor plankton in ... as early as July (midwinter). The large areal and temporal scale means that it is difficult to ...
Meeting Document : WS-BSO-07/P4 : Autor(es): Hosie, G., M. Fukuchi and S. Kawaguchi
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A three-frequency method to determine the abundance and the size of two euphausiid species (Euphausia superba and Euphausia crystallorophias)
role in the Ross Sea pelagic ecosystem (Marr, 1962; Azzali et al., 1999). To estimate the abundance of ... aggregations with similar shape, therefore visual separation of their echograms is difficult. The possibility ... of the net and to the net avoidance (Wiebe, 1972; Everson and Bone, 1986). This last bias affects ... an echo coming from an isolated organism, with no interference from noise or other targets. It means ...
Meeting Document : WG-EMM-01/63 : Autor(es): M. Azzali, J. Kalinowksi, G. Lanciani and I. Leonori (Italy)
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A CHARACTERISATION OF THE TOOTHFISH FISHERY IN SUBAREAS 88.1 AND 88.2 FROM 1997–98 TO 2007–08
2001), these year classes are not seen in large numbers in later years in the fishery. So at this stage ... eleven years in Subarea 88.1 and for six years in Subarea 88.2. This report summarises the large amount ... catch was the fourth highest on record with a total of 2666 t against a combined catch limit of 3207 t ... . The management of the SSRUs within the two subareas was changed for the 2006 season as part of a 3 ...
Meeting Document : WG-FSA-08/22 : Autor(es): M.L. Stevenson, S.M. Hanchet and A. Dunn (New Zealand)
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A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997/98 to 2006/07
Shelf in 1999 and 2001), these year classes are not seen in large numbers in later years in the fishery ... management of the SSRUs within the two subareas was changed for the 2006 season as part of a 3-year ... years in Subarea 88.1 and for five years in Subarea 88.2. This report summarises the large amount of ... the second highest on record with a total of 3431 t against a combined catch limit of 3579 t. The ...
Meeting Document : WG-FSA-07/28 : Autor(es): S.M. Hanchet, M.L. Stevenson and A. Dunn (New Zealand)
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Progress report on the scientific data compilation and analyses in support of the planning of a potential Marine Protected Area (MPA) east of the zero meridian in the Weddell Sea (Antarctica)
of Domain 4 for submission to the Commission in 3 to 4 years. Work on this project commenced with an ... Abstract: In recent years, CCAMLR Member States have undertaken substantial efforts to designate ... 6.39) as a useful way forward to achieve consensus and offered to work collaboratively with Norway, the ... EU and its Member States to progress on Norway’s proposed design to protect areas in the eastern part ...
Meeting Document : SC-CAMLR-38/BG/14 : Autor(es): G. Griffith, T. Hatterman, A. Høgestøl, Y. Kasajima, A. Lowther, S. Moreau, B. Njaastad, P. Koubbi, C. von Quillfeldt, T. Brey, K. Teschke and O.A. Bergstad