Search results
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Integrated models for Antarctic krill (Euphausia superba) using survey data from 1981–2014 in Subarea 48.1
extended to include estimates of krill growth consistent with survey data and to use multi-nation survey ... data collected from 1981 to 2014 near the Antarctic Peninsula. Four models of the population dynamics ... of Antarctic krill in Subarea 48.1 based on different aggregations of the data are described to ... illustrate the capabilities of the framework. Survey data collected by Germany (RMT8 net sampling from 1981 ...
Meeting Document : WG-SAM-14/20 : Author(s): D. Kinzey, G.M. Watters and C.S. Reiss (USA)
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Marine debris and entanglements at Bird Island and King Edward Point, South Georgia, Signy Island, South Orkneys and Goudier Island, Antarctic Peninsula 2016/17
to March 2017. Surveys of beached marine debris at Bird Island recorded a total of 244 items during ... items of beached debris were recorded at Signy Island (operational during summer only; 19 November 2016 ... to 22 March 2017). Sixty-four items of beached marine debris were recorded at Goudier Island ... . Entanglements of two Antarctic fur seals were observed at Bird Island and one at Signy Island, with three ...
Meeting Document : SC-CAMLR-XXXVI/BG/35 : Author(s): C. Waluda
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Krill conversion factors
of different krill products are examined and a range of values produced. These are broadly in line ... with those currently in use although the differences are such that use of the traditional factors may ... introduce large errors into the estimation of removals. It is uncertain whether discarding is a common ... practice in the fishery, if it is then the use of any of the conversion factors will result in a serious ...
Meeting Document : WG-EMM-01/39 : Author(s): I. Everson (United Kingdom)
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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