Search results
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Proposal for the removal of night setting requirement for autoline vessels fishing in Division 58.5.2
fishing in Division 58.5.2 to occur at any time of the day/night cycle. The proposal forms part of an ... adaptive approach to management, which considers the risk status of the fishery, knowledge on the ... effectiveness of mitigation measures, mitigation performance record of the vessel, seabird mortality levels and ... assessment of the likely effects of individual mitigation measures to total mitigation response. Since the ...
Meeting Document : WG-FSA-04/73 : Author(s): G. Robertson and B. Baker (Australia)
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Results of the third CCAMLR sponsored research survey to monitor abundance of subadult Antarctic toothfish in the southern Ross Sea, February 2014 and development of the time series
Abstract: At its 2011 meeting, the Scientific Committee agreed that a time series of relative ... provide results of the third survey in the time series. The objectives of this third survey were: (1) To ... area to identify areas of high subadult abundance which could be included as strata in future annual ... significantly different. Age frequency data from the surveys have shown the progression of a cohort from age 7 ...
Meeting Document : WG-FSA-14/51 : Author(s): S. Mormede, S.J. Parker, S.M. Hanchet, A. Dunn (New Zealand) and S. Gregory (United Kingdom)
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Mapping Application for Penguin Populations and Projected Dynamics (MAPPPD): Data and tools for dynamic management and decision support
Resources (CCAMLR) and Antarctic Treaty System (ATS). The Mapping Application for Penguin Populations ... meeting the management objectives as set forth by CCAMLR and other components of the ATS (i.e ... ., Consultative Meetings and the ATS Committee on Environmental Protection). The database underlying MAPPPD ... ) and Antarctic Treaty System (ATS). The Mapping Application for Penguin Populations and Projected Dynamics ...
Meeting Document : WG-EMM-16/P08 : Author(s): G.R.W. Humphries, C. Che-Castaldo, R. Naveen, M. Schwaller, P. McDowall, M. Schrimpf and H.J. Lynch
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A quantified Bayesian maximum entropy estimate of Antarctic krill abundance across the Scotia Sea and in small-scale management units from the 2000 CCAMLR survey
Abstract: We present the results of an alternative method of estimating krill abundance, and ... producing maps of krill distribution, from the data collected during the 2000 CCAMLR survey of the Scotia ... unsurveyed off-transect portions of the survey area were found by interpolation, and thus values for total ... inferred. The MaxEnt formalism allows an objective choice of the parameters of the interpolation, and hence ...
Meeting Document : WG-EMM-05/42 : Author(s): B.G. Heywood, S.F. Gull and A.S. Brierley (United Kingdom)
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A distribution-free model of length-frequency distribution to inform fishery stratification for integrated assessments
Abstract: Length frequency distributions (LFD) of catch collected as a random sub-sample from ... /or gear specific selectivity. A distribution-free model of LFD is described which is fitted to the ... set of length quantiles L for a predetermined set of corresponding probabilities P (in this instance ... 0.05, 0.1 to 0.9 in 0.1 increments, and 0.95), constructed from individual length measurements of ...
Meeting Document : WG-SAM-13/18 : Author(s): S. Candy, P. Ziegler and D. Welsford (Australia)
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A CHARACTERISATION OF THE TOOTHFISH FISHERY IN SUBAREAS 88.1 AND 88.2 FROM 1997/98 TO 2008/09
steadily increased over the first seven years of the fishery but has since stabilised at about 1000–1200 m ... Subarea 88.1 and for 8 years in Subarea 88.2. During that time a large amount of distributional and ... biological data has been collected on toothfish and the associated bycatch. The purpose of this report is to ... fishery which may be indicative of localised stock depletion. We considered here the catch limit, changes ...
Meeting Document : WG-FSA-09/36 : Author(s): S.M. Hanchet, A. Dunn and S. Mormede (New Zealand)
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Mitigation of Macrourus by-catch in research block 58.4.1_6 and estimation of Macrourus biomass and sustainable catch in Divisions 58.4.1 and 58.4.2
effort is distributed across a range of depth strata (<1000, 1001–1500, 1501–2000 m) with at least 5 ... ) avoidance, ii) mitigation and iii) the setting of sustainable by-catch limits if mortality is not ... preventable (SC-CAMLR-XXII, paragraph 5.230). Here, we undertake a risk assessment of the effects of ... block 58.4.1_6 in particular. We investigate the distribution of D. mawsoni and Macrourus spp. catch ...
Meeting Document : WG-FSA-17/23 : Author(s): D. Maschette, P. Burch, P. Yates and P. Ziegler
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Line weights of constant mass (and sink rates) for Spanish-rig Patagonian toothfish longline vessels
kg weights at 40 m intervals on longlines to minimise interactions with seabirds. The weights are ... collections of rocks enclosed in netting bags. The netting bags abrade on the seabed, rocks are lost and ... use of torpedo-shaped steel weights. Steel weights are smaller, lighter for equivalent mass, more ... chartered Spanish-rig longline vessel to determine the statistical relationship in sink rates of longlines ...
Meeting Document : WG-FSA-07/15 : Author(s): G. Robertson (Australia), C.A. Moreno, E. Gutiérrez (Chile), S.G. Candy (Australia), E.F. Melvin (USA) and J.P. Seco Pon (Argentina)
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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 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 ... experiment (SC-CAMLR-XXIV). One of the aims of the experiment was to simplify the administration of the ...
Meeting Document : WG-FSA-07/28 : Author(s): S.M. Hanchet, M.L. Stevenson and A. Dunn (New Zealand)
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Revised research plan for the 2015/16 exploratory longline fishery of Dissostichus spp. with special reference to the information on spawning dynamics in Division 58.4.3a
at the WG-FSA in 2013 in order to maximize the expectation of tag-recapture to the extent possible ... Abstract: The current season (2014/15) is the final one of the first three-season research which ... numbers of tag recaptures from the estimated stock sizes using the Petersen method were generally ... results in other regions in the Southern Indian Ocean. The stock seems to be self-sustainable because of ...
Meeting Document : WG-FSA-15/19 : Author(s): Delegation of Japan