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A review and update of krill biomass trends in the South Shetland Islands, Antarctica, using the simplified stochastic wave born approximation
season. Relative biomass, estimated from acoustic surveys, and calculated using both the Greene et al ... of analysis, to better account for process and model error structure, now that a physically based ... krill target strength model has been developed. Author(s): C.S. Reiss and A.M. Cossio (USA) Title: A ...
Meeting Document : WG-EMM-06/32 : Автор(ы): C.S. Reiss and A.M. Cossio (USA)
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A methodology for estimating total finfish by-catch of the Area 48 krill fishery
Abstract: The report presents a methodology that can be used to estimate the total finfish ... . Estimates of bycatch rates per tonne of catch were made at a family level for Channichthyidae, Nototheniidae ... and Myctophidae species using delta-lognormal GLMs presented in Martin et al. (2012). The bycatch ... removed from stocks due to finfish bycatch at a family level, for Channichthyidae and Nototheniidae ...
Meeting Document : WG-EMM-12/29 : Автор(ы): T. Peatman, S.M. Martin (United Kingdom), O.R. Godø (Norway) and R.C. Wakeford (United Kingdom)
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Preliminary assessment of mackerel icefish, Champsocephalus gunnari, on the Heard Island Plateau (Division 58.5.2) based on a survey in April–May 2003
Abstract: A preliminary assessment of yield of Champsocephalus gunnari for Heard Island Plateau ... (Division 58.5.2) was undertaken using the standard CCAMLR methods, based on the result of a randomly ... ) implementations indicated that the GYM version provided slightly higher estimates of short-term yield. These ... in recruitment, natural mortality and growth of these fish, combined with the need to maintain a ...
Meeting Document : WG-FSA-03/32 : Автор(ы): A.J. Constable, C.R. Davies, R. Williams and T. Lamb (Australia)
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A single-area stock assessment model of Antarctic toothfish (Dissostichus mawsoni) in SSRU 88.2E for the 2004/05 season
Abstract: This report outlines a Bayesian sex and age structured population stock assessment ... be the same as used for the Antarctic toothfish in the Ross Sea (see Dunn et al. 2005b), except that ... catch removals were modelled as a single fishery. Model fits to the data were adequate, with the tag ... maturity ogive, there was a significant biomass of mature, but ‘invulnerable’ fish in the projection period ...
Meeting Document : WG-FSA-05/31 : Автор(ы): A. Dunn, D.J. Gilbert and S.M. Hanchet (New Zealand)
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KRILLBASE: a multinational, circumpolar database of abundance of Antarctic krill and salps
led to a series of papers since 2004 that illustrate some of its potential uses. The latest version ... webs and biogeochemical cycles. Sustainably managing the fishery for Antarctic krill against a backdrop ... scientists has collated these disparate data into a central database called KRILLBASE, a composite ... aim is to provide a temporal-spatial data resource to support studies of Southern Ocean ecology ...
Meeting Document : SC-CAMLR-XXXV/BG/24 Rev. 1 : Автор(ы): A. Atkinson, S. Hill, H. Peat, R. Downie and L. Gerrish
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A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997/98 to 2006/07
the second highest on record with a total of 3431 t against a combined catch limit of 3579 t. The ... management of the SSRUs within the two subareas was changed for the 2006 season as part of a 3-year ... there was a large overrun of the catch limit in the North region, the overall catch limit for Subarea ... tag recoveries over the past two seasons (Dunn et al. 2007). The length frequency data from the Ross ...
Meeting Document : WG-FSA-07/28 : Автор(ы): S.M. Hanchet, M.L. Stevenson and A. Dunn (New Zealand)
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A spatially explicit population dynamics operating model for Antarctic toothfish in the habitable depths of the Ross Sea region
Abstract: We present a spatially explicit age-structured population dynamics operating model for ... Antarctic toothfish in the Ross Sea region, for a medium scale spatial resolution (189 spatial cells ... considered suitable habitat for toothfish (unrestricted model). The semi-restricted model provides a ... previously presented restricted and unrestricted models (Mormede et al. 2013). The most plausible model is ...
Meeting Document : WG-FSA-13/53 : Автор(ы): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)
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KRILLBASE: a circumpolar database of Antarctic krill and salp numerical densities, 1926–2016
Southern Ocean food webs and krill are also fished commercially. Managing this fishery sustainably, against a ... salp individual (multiple species, and whether singly or in chains). These were combined into a central ... provide a temporal-spatial data resource to support a variety of research such as biogeochemistry ... conservation. Previous versions of KRILLBASE have led to a series of papers since 2004 which illustrate some of ...
Meeting Document : WG-EMM-17/P03 : Автор(ы): A. Atkinson, S.L. Hill, E.A. Pakhomov, V. Siegel, R. Anadon, S. Chiba, K.L. Daly, R. Downie, S. Fielding, P. Fretwell, L. Gerrish, G.W. Hosie, M.J. Jessopp, S. Kawaguchi, B.A. Krafft, V. Loeb, J. Nishikawa, H.J. Peat, C.S. Reiss, R.M. Ross, L.B. Quetin, K. Schmidt, D.K. Steinberg, R.C. Subramaniam, G.A. Tarling and P. Ward
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IMPACTS OF CLIMATE CHANGE ON ANTARCTIC MARINE ECOSYSTEMS: A CALL FOR ACTION
species) and Antarctic krill (Cheung et al., 2008), as well as changing the habitat characteristics of ... Committee needs to increase its work on climate change impacts in order to consider the consequences of a ... on Ecosystem Management and Monitoring. ASOC requests Members to adopt a Resolution acknowledging the ... various adverse impacts of climate change on the Southern Ocean, to pledge to apply a highly precautionary ...
Meeting Document : CCAMLR-XXVII/BG/27 : Автор(ы): Submitted by ASOC
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Preliminary investigations into a two-area stock assessment model for Antarctic toothfish (Dissostichus mawsoni) in the Amundsen Sea Region
Abstract: In 2013, the Scientific Committee of CCAMLR could not achieve consensus on a stock ... 88.2H. As a consequence, WG-SAM requested further runs be carried out with emigration estimated in the ... model. However, the models that mimicked emigration in a single area assessment model failed to provide ... adequate fits to the observed tag recapture data (Mormede et al. 2014b). As an alternative approach, we ...
Meeting Document : WG-FSA-14/57 : Автор(ы): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)
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