Search results
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Possible approach to krill movement estimation by hydroacoustic observations
Abstract: Method of estimation of krill drift velocity in water current,using repeated acoustic ... transects on rectangular polygon is discribed.Dimensions of polygon and frequency of acoustic observations ... have to be determined with taking into account distribution patterns of krill,its patchiness, between ... speed-8 knots,mean BSD-5km,mean BCD-6.3 km dimensions of polygon must be 10 12 km and discretness of ...
Meeting Document : WG-KRILL-91/28 : Author(s): P.P. Fedulov (USSR)
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Factors to consider in developing management measures for krill
Abstract: A brief review of the objectives of the Convention for the Conservation of Antarctic ... Marine Living Resources is given along with an outline of for the evolution of management procedures for ... krill fisheries. Various possible elements of procedures such as reactive, predictive, and feedback ... management, modelling, indicator species, pulse fishing, and the use of open and closed areas and seasons are ...
Meeting Document : WG-KRILL-90/14 : Author(s): W.K. de la Mare (Australia)
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Downward adjustments to local catch limits for the krill fishery in Subarea 48.1
refer to a catch limit that applies to a group of SSMUs (gSSMU), and the work presented here is based on ... the gSSMUs defined in another compilation of vignettes (AERD 2016a, pp. 3-13). We propose downward ... adjustments to local catch limits as one component of a larger strategy for feedback management (FBM) of the ... penguin populations, 2) a leading indicator that predicts recruitment rates of penguin cohorts, 3 ...
Meeting Document : WG-EMM-16/46 : Author(s): Antarctic Ecosystem Research Division, Southwest Fisheries Science Center and NOAA Fisheries
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Conserving pattern and process in the Southern Ocean: designing a Marine Protected Area for the Prince Edward Islands
Economic Zone (EEZ) of its sub-Antarctic Prince Edward Islands. The objectives of the MPA are to: 1 ... ) contribute to a national and global representative system of MPAs, 2) serve as a scientific reference point ... to inform future management, 3) contribute to the recovery of the Patagonian toothfish (Dissostichus ... eleginoides), and 4) reduce the bird bycatch of the toothfish fishery, particularly of albatrosses and petrels ...
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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VARIATION IN DEMERSAL FISH SPECIES RICHNESS IN THE OCEANS SURROUNDING NEW ZEALAND: AN ANALYSIS USING BOOSTED REGRESSION TREES
characteristics using an extensive collection of trawl data from the oceans around New Zealand. Analyses were ... ‘stochastic gradient boosting’). Depth was the single most important environmental predictor of variation in ... species richness, with highest richness occurring at depths of 900 to 1000 m, and with a broad plateau of ... concentrations of chlorophyll a and in zones of mixing of water bodies of contrasting origins. Local variation in ...
Meeting Document : WS-VME-09/P04 : Author(s): Leathwick, J.R., Elith, J., Taylor, P., Francis, M.P., Hastie, T.
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Beach litter survey Signy Island, South Orkney Islands, 1992/93
their origin noted. At Foca Cove, a total of 23 items were recovered with a combined weight of 4.45 kg ... . At Cummings Cove, a total of 42 items were recovered (9.10 kg). No debris was found at Starfish Cove ... . Comparison with the 1990/91 and 1991/92 litter surveys showed a dramatic drop in both the weight of debris ... and the total number of items recovered. For example, at Foca Cove, the total weight of debris ...
Meeting Document : CCAMLR-XII/BG/07 : Author(s): Delegation of United Kingdom
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Krill (Euphausia superba) distribution contracts southward during rapid regional warming
that, within their main population centre in the southwest Atlantic sector, the distribution of ... the Antarctic shelves. A concomitant increase in mean body length reflects reduced recruitment of ... juvenile krill. We found evidence for environmental controls on recruitment, including a reduced density of ... juveniles following positive anomalies of the Southern Annular Mode. Such anomalies are associated with warm ...
Meeting Document : WG-EMM-2019/P02 : Author(s): A. Atkinson, S.L. Hill, E.A. Pakhomov, V. Siegel, C.S. Reiss, V.J. Loeb, D.K. Steinberg, K. Schmidt, G.A. Tarling, L. Gerrish and S.F. Sailley
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Fish by-catch in the krill fishery: 2016 update
SISO data (11875 hauls) was used to examine the frequency of occurrence, proportion by mass, length ... -frequency distribution and geographic provenance of the key fish taxa reported. There was a high degree of ... Chaenodraco wilsoni the most frequently reported in both datasets. The estimated total annual mass of fish by ... % Lepidonotothen larseni. The length-frequency distribution of all taxa for which >100 fish were measured had ...
Meeting Document : WG-FSA-16/04 : Author(s): CCAMLR Secretariat
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Some thoughts on the CCAMLR risk assessment for seabird–fishery interactions
Abstract: The CCAMLR system for assessing risk of fisheries mortalities to seabirds has been ... waters of the CCAMLR convention area. Annual review of the information by used CCAMLR Working Group on ... Incidental Mortality Associated with Fishing for the assessments of risk, and performance of fisheries within ... these zones is undertaken, resulting in a dynamic system of assessment and response by the CCAMLR ...
Meeting Document : WG-FSA-06/33 : Author(s): S. Waugh (New Zealand)
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Marine debris and fishing gear associated with seabirds at sub Antarctic Marion Island – 1998/99
Abstract: Most (52%) of the 306 debris items found in association with seabirds at Marion Island ... of fishing gear, followed by southern giant petrels Macronectes giganteus. Standardized searches of ... wandering albatross study colonies showed that there had been a slight decrease in the accumulation rate of ... much higher than the 1996/97 season. This is consistent with a decrease in the number of unsanctioned ...
Meeting Document : SC-CAMLR-XVIII/BG/14 : Author(s): Delegation of South Africa