Search results
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A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997/98 to 2006/07
years in Subarea 88.1 and for five years in Subarea 88.2. This report summarises the large amount ... of the SSRUs within the two subareas was changed for the 2006 season as part of a 3-year experiment (SC-CAMLR ... are caught in some years (e.g., on the Shelf in 1999 and 2001), these year classes are not seen in large ... numbers in later years in the fishery. So at this stage there is no evidence for strong variation in year ...
Meeting Document : WG-FSA-07/28 : Author(s): S.M. Hanchet, M.L. Stevenson and A. Dunn (New Zealand)
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Are penguins and seals in competition for Antarctic krill at South Georgia?
they are, respectively, the main mammal and bird consumers of Antarctic krill (Euphausia superba). In recent years ... 1989 and 2000. Foraging ranges of the two species showed considerable overlap in both years ... species was very similar, but over the last 12 years the prevalence of krill in their diets has diverged ... of Antarctic fur seals will be enhanced as their population continues to increase, particularly in years ...
Meeting Document : WG-EMM-02/22 : Author(s): K.E. Barlow, I.L. Boyd, J.P. Croxall, K. Reid, U.J. Staniland and A.S. Brierley (United Kingdom)
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Solutions to seabird by-catch in Alaska’s demersal longline fisheries
Abstract: This research program compared seabird bycatch mitigation strategies over 2 years (1999 ... for Pacific cod. We conducted tests over two years to account for inter-annual variation and allow ... comprehensive solution. Paired streamer lines successfully reduced seabird bycatch in all years, regions ... of magnitude variation in bycatch across years and in the case of the sablefish fishery, among regions. Paired ...
Meeting Document : WG-FSA-01/35 : Author(s): E.F. Melvin, J.K. Parrish, K.S. Dietrich and O.S. Hamel (USA)
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Reproduction in Antarctic notothenioid fish - a review
gunnari in the Atlantic Ocean sector do not spawn each year. Gonadosomatic index (GSI) of females is 15–40 ... % at spawning. Apart from a few nototheniid species the GSI of males is much less and typi6dlly only 15–20 ... only in a few nototheniid species and is commonly in the order of 1000 to 15–20 000 eggs. Ova diameter ... in the Atlantic Ocean sector do not spawn each year. Gonadosomatic index (GSI) of females is 15–40% at spawning ...
Meeting Document : SC-CAMLR-X/BG/12 : Author(s): Delegation of Germany
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Diet composition and observations on reproduction of Champsocephalus gunnari in Subarea 48.3 in March/April 1996, Dr Eduardo Holmberg survey
items, known as an important alternative food in years of krill scarcity, were ingested only ... higher than those reported for the 1991 and 1994 years of krill shortage. The analysis of the ovarian ... in the region in levels equivalent to the historical years of high abundance. Author(s): Marschoff, E., Barrera ... as an important alternative food in years of krill scarcity, were ingested only occasionally (Themisto ...
Meeting Document : WG-FSA-96/28 Rev. 1 : Author(s): Marschoff, E., Barrera-Oro, E., Casaux, R.
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Modelling the impact of fishery by-catches on albatross populations
fisheries south of 30 S, to model estimated by-catch levels and other population parameters in the model ... (uniform between 30°S–60°S; proportional to the distribution of longline fishing effort between ... fisheries south of 30 S, to model estimated by-catch levels and other population parameters in the model ... (uniform between 30°S–60°S; proportional to the distribution of longline fishing effort between ...
Meeting Document : WG-FSA-01/18 : Author(s): G. Tuck, T. Polacheck (Australia), J.P. Croxall (UK) and H. Weimerskirch (France)
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The fish diet of black-browed albatross Diomedea melanophrys and grey-headed albatross D. chrysostoma at South Georgia
1986 and 1994. Fish represented 30% and 72% by mass of the diet of black-browed albatrosses and 14 ... % of estimated biomass) with Magnisudis prionosa (30%) and Champsocephalus gunnari (12%) also making substantial ... represented 30% and 72% by mass of the diet of black-browed albatrosses and 14% and 60% by mass of the diet ... prionosa (30%) and Champsocephalus gunnari (12%) also making substantial cpntributions. Grey-headed ...
Meeting Document : WG-EMM-96/11 : Author(s): Reid, K., Prince, P.A., Croxall, J.P.
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Report of Member’s activities in the Convention Area 1997/98 Australia
by Australia in the Convention Area during the year to 30 June 1998. Title: Report of Member’s activities ... by Australia in the Convention Area during the year to 30 June 1998. ...
Meeting Document : CCAMLR-XVII/MA/6
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Abundance and trends in the breeding population of Adélie penguins (Pygoscelis adeliae) in the western Ross Sea
). The aggregated colonies of Cape Bird and Cape Crozier had a negative per capita growth rate of-1.8% for the years ... , 1981-2000 followed by a positive per capita growth rate of 5.5% for the years, 2001-2010. In contrast ... , a single declining trend line best represented the number of breeding pairs at Cape Royds for the years ... dependence in the number of pairs returning to the colony each year. In recent years a number of the Adélie ...
Meeting Document : WG-EMM-13/30 : Author(s): P. O’B. Lyver, M. Barron, K.J. Barton, S. Gordon (New Zealand), D. Ainley, A. Pollard (USA), P.R. Wilson and M.H. Pinkerton (New Zealand)
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Depletion-corrected average catch: a simple formula for estimating sustainable yields in data-poor situations
biomass. The size of the windfall is expressed as being equivalent to a number of years of sustainable ... by the sum of the number of years in the catch series and this windfall ratio. Input information includes ... the sum of catches and associated number of years, the relative reduction in biomass during that period ... , the natural mortality rate (M, which should be,0.2 year21), and the assumed ratio of FMSY to M. These input ...
Meeting Document : WG-SAM-11/P3 : Author(s): A.D. McCall