Search results
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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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Acoustic monitoring and evaluation of krill in the Antarctic ecosystem Bransfield Strait and around Elephant Island during ANTAR XXI and XXII, aboard RV Humboldt, Peru
at high densities between 20 and 50 m deep while overnight, dispersed and scattered swarms were detected ... from the surface to 20 m deep. A wide distribution of krill in the study area, the highest densities ... between 20 and 50 m deep while overnight, dispersed and scattered swarms were detected from the surface ... to 20 m deep. A wide distribution of krill in the study area, the highest densities (> 1000 m / mn ...
Meeting Document : WG-EMM-16/76 : Author(s): R. Cornejo, M. Flores and J. Zuzunaga
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A comparative morphometric analysis of sagittal otoliths of three icefishes (Channichthyidae) in Antarctic waters
and right otoliths for fish ranging from 20 to 67 cm TL. To test for significant differences between ... not varied significantly between right and left sagittae (P>0.05). All EFDs derived from the 20 harmonics ... and right otoliths for fish ranging from 20 to 67 cm TL. To test for significant differences between ... not varied significantly between right and left sagittae (P>0.05). All EFDs derived from the 20 harmonics ...
Meeting Document : WG-FSA-18/47 : Author(s): G. Plaza, C. Rodríguez-Valentino and P.M. Arana
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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
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Stock assessment of D. eleginoides in Subarea 48.3 using dynamic production models
(with Schaefer and Fox production functions) were used: total yield for a series of years and abundance index ... estimates by years of fishing. Both models showed that the D. eleginoides stock status at the initial period ... years. The trends in biomass dynamic estimated by DPM are very similar with trends from dynamic age ... production functions) were used: total yield for a series of years and abundance index describing interyear ...
Meeting Document : WG-FSA-02/78 : Author(s): P.S. Gasiukov and R.S. Dorovskich (Russia)