Search results
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Results of the 2015 multi-Member longline survey for toothfish in the northern Ross Sea region (Subarea 88.2 SSRUs A–B) and proposal for 2016 operations
Abstract: The first year of a two-year and multi-member research survey using standardised ... The first year of a two-year and multi-member research survey using standardised longline gear ... of 109.1 t of Antarctic toothfish and two Patagonian toothfish (0.029 t) were caught. Toothfish catch rates ... ). A total of 109.1 t of Antarctic toothfish and two Patagonian toothfish (0.029 t) were caught. Toothfish ...
Meeting Document : WG-FSA-15/32 : Author(s): S.J. Parker, R.J.C. Currey (New Zealand), M. Söffker, C. Darby (United Kingdom), O. Godø (Norway) and A. Petrov (Russia)
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Using data recorded during commercial krill fishing in Feedback Management
of this uncertainties. In this paper we discuss how the information of these two papers can be used in an operational ... some of this uncertainties. In this paper we discuss how the information of these two papers can ...
Meeting Document : WG-EMM-16/74 : Author(s): O.R. Godø, G. Skaret and E. Niklitschek
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A spatially explicit population dynamics operating model for Antarctic toothfish in the habitable depths of the Ross Sea region
distribution hypothesis in-between the two extreme bounding hypotheses represented by the previously presented ... restricted and unrestricted models (Mormede et al. 2013). The most plausible model is the one that restricts ... a plausible distribution hypothesis in-between the two extreme bounding hypotheses represented ... is the one that restricts toothfish distribution to depths which are known to provide suitable toothfish ...
Meeting Document : WG-FSA-13/53 : Author(s): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)
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The random stratified trawl survey to estimate the abundance of Dissostichus eleginoides and Champsocephalus gunnari in the waters of Heard Island (Division 58.5.2) for 2016
April, with the completion of 163 stations. The survey was conducted for the second year on the FV Atlas ... Cove. Sampling protocols such as the design and the duration of the hauls were similar to last year’s ... were lower than the average for macrourids, close to average for C. rhinoceratus and only one-third ... and the long term average. The catch of invertebrates in the 2016 survey was two times higher than average, due ...
Meeting Document : WG-FSA-16/23 : Author(s): G.B. Nowara, T.D. Lamb and D.C. Welsford
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A simple approach for calculating the potential yield of krill from biomass survey results
-exploitation level over a 20 year period of harvesting should not exceed l0%. The value of λ depends strongly ... for the calculations is that the probability that the kri11 spawning biomass drops below 20% of its average pre ... is that the probability that the kri11 spawning biomass drops below 20% of its average pre-exploitation level over a 20 ... year period of harvesting should not exceed l0%. The value of λ depends strongly on the value ...
Meeting Document : WG-KRILL-91/24 : Author(s): D.S. Butterworth (South Africa) and M. Basson (United Kingdom)
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Spatial and temporal variability in foraging patterns of krill predators at Signy Island and South Georgia
differences are apparent between years. We use this information about where and when marine predators forage ... differences are apparent between years. We use this information about where and when marine predators forage ...
Meeting Document : WG-EMM-02/33 Text : Author(s): P.N. Trathan, J.L. Tanton, A.S. Lynnes, M.J. Jessopp, H. Peat, K. Reid and J.P. Croxall (United Kingdom)
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Conserving pattern and process in the Southern Ocean: designing a Marine Protected Area for the Prince Edward Islands
zones: four IUCN Category Ia reserves (13% of EEZ); two Conservation Zones (21% of EEZ); and three ... Category Ia reserves (13% of EEZ); two Conservation Zones (21% of EEZ); and three Category IV reserves ...
Meeting Document : WS-BSO-07/P1 : Author(s): Lombard, A.T., B. Reyers, L.Y. Schonegevel, J. Cooper, L.B. Smith-Adao, D.C. Nel, P.W. Froneman, I.J. Ansorge, M.N. Bester, C.A. Tosh, T. Strauss, T. Akkers, O. Gon, R.W. Leslie and S.L. Chown
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Estimating fishing gear selectivity for Patagonian toothfish (Dissostichus eleginoides) caught by trawlers on the Heard Island plateau region (Division 58.5.2) using trawl and longline length frequency data and forward-calculated continuation ratios
-2005 the upper arm of the gear selectivity function for trawlers is estimated using a two-stage process ... this odds ratio is less than one gives the trawl gear selectivity for that length bin assuming fish ... of bins where this ratio is less than one. The fitted linear decline in selectivity begins from near 800 ... -2005 the upper arm of the gear selectivity function for trawlers is estimated using a two-stage process ...
Meeting Document : WG-FSA-05/65 : Author(s): S.G. Candy (Australia)
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The Australian exploratory toothfish fishery in CCAMLR Division 58.4.2 and Subdivision 58.4.3b in season 2003/04
. Of the two SSRUs in Division 58.4.2, bycatch was highest in SSRU E with 624 kg of total bycatch comprising ... was highest at BANZARE Bank with 916 kg of total bycatch, comprising 15% of the total catch weight. Of the two ...
Meeting Document : WG-FSA-04/66 : Author(s): D. Erceg and E. van Wijk (Australia)
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Relative abundance of large whales around South Georgia
species were rare, with southern right whale sightings being the most common event. Two right whales ... photographed off South Georgia matched animals known from Peninsula Valdes, Argentina, a population known ... mother-calf pair was observed off the Shag Rocks in February 1997. Extirpation of animals from ... , with southern right whale sightings being the most common event. Two right whales photographed off South Georgia ...
Meeting Document : WG-EMM-99/34 : Author(s): M.J. Moore (USA), S.D. Berrow (UK), B.A. Jensen (USA), P. Carr (UK), R. Sears (Canada) and V.J. Rowntree, R. Payne and P.K. Hamilton (USA)