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Ecological risk management and the fishery for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea, Antarctica
an ecological risk assessment for Antarctic Toothfish (Dissostichus mawsoni) longline fishery in the ... research and management resources can be prioritised so as to meet the objectives of Article II of CCAMLR ... . Risks are considered in 4 categories: 1. Target species harvest: Risks of depletion of Antarctic ... species. 4. Exogenous effects: Risks of change in the marine ecosystem due to, or exacerbated by ...
Meeting Document : WG-EMM-07/24 : Autor(es): M.H. Pinkerton, A. Dunn and S.M. Hanchet (New Zealand)
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Preliminary report of outcomes of the 2nd international workshop on the ICED Southern Ocean Sentinel, held in Hobart Australia 7–11 May 2012
benchmarking Southern Ocean ecosystems in 2020 and for establishing routine activities for estimating change in ... Headquarters on 7-11 May 2012 in Hobart, Australia, hosted by the Australian Antarctic Division and the ... the discussion on strategies for measuring change in Southern Ocean marine ecosystems, including ship ... involved in this work, particularly through the Working Group on Ecosystem Monitoring and Management and ...
Meeting Document : WG-EMM-12/59 : Autor(es): A. Constable (Australia)
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Report on an Antarctic cetacean survey on board a Chilean fishing vessel in February 2016
for fin-, humpback and, to a lesser extent, sei whales. If any fishing effort is to be undertaken in ... these areas, no disturbance within these comparably small areas of high animal density should be ... Title: Report on an Antarctic cetacean survey on board a Chilean fishing vessel in February 2016 ...
Meeting Document : WG-FSA-16/19 : Autor(es): S. Viquerat, H. Herr, K.-H. Kock and P. Arana
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Killer whale (Orcinus orca) and sperm whale (Physeter macrocephalus) interactions with longline vessels in the Patagonian toothfish fishery at South Georgia, South Atlantic
with longline vessels in the Patagonian toothfish fishery at South Georgia, South Atlantic Abstract ... ). Demersal longlines, targeting Patagonian toothfish (Dissostichus eleginoides), were deployed in depths of ... most abundant marine mammal observed in the vicinity of vessels when lines were being hauled, being ... whales were most often observed in the day, generally in the afternoon, while night-time interactions ... this fi shery as early as 1994 (SC-CAMLR, 1994), but in recent years anecdotal reports by observers ... ) reported that between 1 and 12 tooth- fi sh, ranging in size from 70 to 130 cm (4 to 20 kg) were found in ... H 302 14 4.6 46 15.2 0 0 I 319 14 4.4 78 24.5 20 6.3 J 712 30 4.2 119 16.7 14 2 K 346 12 3.5 18 ... –20 12 6.5 21–30 2 1.1 Table 4: The times at which interactions occurred with killer whales ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 111–126 : Autor(es): Purves, M.G., D.J. Agnew, E. Balguerías, C.A. Moreno and B. Watkins
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Geographical differences in the condition, reproductive development, sex ratio and length distribution of Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea, Antarctica (CCAMLR Subarea 88.1)
Paper Title: Geographical differences in the condition, reproductive development, sex ratio and ... study indicate measurable differences in a number of indices from toothfish found on the Ross shelf ... population had a unimodallength distribution at a consistent peak over all sampling seasons in comparison ... with the southern group (in which the distribution was multimodal), showed a consistent and ... two identifiable spawning fish, that spawning females have high GSI values (in the range of 20 and ... observers who assisted in the data collection. The author is deeply indebted to Dick Williams for his time ... South shelf North South break South shelf 100 90 80 70 60 50 40 30 20 10 0 North South break ... GEOGRAPHICAL DIFFERENCES IN THE CONDITION, REPRODUCTIVE DEVELOPMENT, SEX RATIO AND LENGTH DISTRIBUTION OF ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 27–45 : Autor(es): Fenaughty, J.M
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Distribution and size–age composition of Antarctic krill (Euphausia superba) in the South Orkney Islands region (CCAMLR Subarea 48.2).
Paper Title: Distribution and size–age composition of Antarctic krill (Euphausia superba) in the ... trawler FV Maxim Starostin in Subarea 48.2 between January and March in 2009 and 2010 are described. The ... distribution of size–age groups in association with particular water masses indicated that age 2+ krill ... dominated in cold Weddell Sea waters in the southern parts of the fishing area, while older age classes (3 ... , CCAMLR mailto:sologub@vniro.ru Sologub and Remeslo 124 in 2009 and 2010. In both years, fishing ... the differences between years in abso- lute values, in both years the warmer waters of the Antarctic ... years. Specific composition of krill (Euphausiidae) Euphausia superba was the dominant species in the ... catches in both years. However, in 2009, about 500 Pygmy krill (E. frigida) were collected from 5 600 kg ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 123–134 : Autor(es): Sologub, D.O. and A.V. Remeslo
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Competition-mediated prey availability drives Adélie penguin (Pygocelis adeliae) chick size, mass and condition at colonies of differing size in the southern Ross Sea
interactions between them, is a key component in understanding the factors driving changes in animal ... foraging. In addition, we show that in some cases, increased intraspecific competition may be a more ... food webs may affect changes in Adélie penguin populations in the Ross Sea and elsewhere. Author(s ... , mass and condition at colonies of differing size in the southern Ross Sea Approval: Approved ...
Meeting Document : WG-EMM-13/31 : Autor(es): A.L. Whitehead (Australia), P. O’B. Lyver (New Zealand), G. Ballard (USA), K. Barton, B.J. Karl (New Zealand), D.G. Ainley, K. Dugger, S. Jennings (USA), A. Lescroël (France) and P.R. Wilson (New Zealand)
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Is the attempt to estimate the biomass of Antarctic fish from a multi-species survey appropriate for all targeted species? Notothenia rossii in the Atlantic Ocean sector – revisited
appropriate for all targeted species? Notothenia rossii in the Atlantic Ocean sector – revisited Abstract ... / Description: Notothenia rossii was the fi rst target species in Southern Ocean fi sheries. The species was ... already heavily fished at the beginning of the 1970s. The closure of the fishery for this species in 1985 ... violated in the case of N. rossii, which is non-randomly distributed such that a large proportion of the ... trends in abundance. Despite the closure of the fi shery almost 20 years ago, none of these multi ... properly in the almost 20 years since the fi shery was closed. Two alternatives to the approach generally ... less than 20 min duration were disregarded. All survey data are held in the CCAMLR database. For ... bottom. All catches were scaled down to 30 min in order to make them directly comparable to the ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 141–153 : Autor(es): Kock, K.-H., M. Belchier and C.D. Jones
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Considerations for research plan design and implementation in data-poor fisheries
of research plans in data poor fisheries submitted under CMs 21-02 and 24-01 in 2011 and in 2012. We ... implementation issues raised during research plan design and evaluations. Our aim is to streamline the review ... biological risks arising from uncertainty in the research implementation process. Author(s): S.J. Parker, B ... implementation in data-poor fisheries Approval: Approved ...
Meeting Document : WG-SAM-13/37 : Autor(es): S.J. Parker, B. Sharp, A. Dunn (New Zealand) and K. Taki (Japan)
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Bias in the estimation of krill yield from using a deterministic formulation of the median unexploited spawning biomass
Paper Title: Bias in the estimation of krill yield from using a deterministic formulation of the ... unexploited spawning biomass. These models are used in order to account for uncertainty in the biological ... model as a basis for setting catch limits in the krill fishery, while the GYM is used for assessing ... yield in other finfish fisheries but can also be used for krill. The decision rules relate to the ... spawning biomass after 20 and 30 years relative to median So in each run with no fishing was 1.099 and ... and for three levels of y - 0.15, 0.2 and 0.4. Projections for 20 years and 30 years were undertaken ... Butterworth et al. (1994). Values in parentheses are probabilities of depletion over a 30-year projection ... perio . Table 2: Escapement of spawning biomass at the end of 20 and 30-year projections for different ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 1–8 : Autor(es): Constable, A.J. and W.K. de la Mare