Resultados de la búsqueda
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Further computations of the consequences of setting the annual krill catch limit to a fixed fraction of the estimate of krill biomass from a survey
a function of the fraction of the biomass estimate which is set as the catch for a 20-year period ... integration over the ranges of uncertainty for a number of the model parameters. Results are provided for the ... preferable to a summer harvest. However, the imposition of an upper-bound of 1.5 yr-1 on the effective annual ...
Meeting Document : WG-KRILL-93/42 : Autor(es): D.S. Butterworth, G.R. Gluckman, R.B. Thomson and S. Chalis (South Africa)
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PRELIMINARY ASSESSMENT OF TOOTHFISH IN SUBAREA 48.3
Abstract: 1. 2009 data have been incorporated in to the catch-at-age based CASAL model for ... 2006. Fits to the catch at age data are good, except for 2009 where large numbers of age 7 and age 9 ... toothfish in Subarea 48.3. 2. Fits to the survey data are good for the early 2000s, particularly 2004 to ...
Meeting Document : WG-FSA-09/28 Rev. 1 : Autor(es): D.J. Agnew and T. Peatman (United Kingdom)
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Conservation Measure Conservation Measure 147/XVIII (1999)
Cooperation between Contracting Parties Limitations: Except for waters adjacent to the Kerguelen and Crozet ... . 1 Except for waters adjacent to the Kerguelen and Crozet Islands 2 Except for waters adjacent to the ... Prince Edward Islands CONSERVATION MEASURE 129/XVI Prohibition of Directed Fishing for Lepidonotothen ... squamifrons in Statistical Division 58.4.4 (Ob and Lena Banks) Directed fishing for Lepidonotothen ... squamifrons, other than for scientific research purposes, is prohibited in Statistical Division 58.4.4 from 8 ...
Conservation Measure : 147/XVIII (1999)
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Using carapace measurements to determine the sex of Antarctic krill (Euphausia superba)
allometric equations for calculating total length from carapace length, were derived from South Georgia krill ... independently derives sex-specific regression models for krill collected in the South Shetlands. Allometric ... derived from mature krill in years following significant recruitment events with large proportions of ... immature krill resulted in significant bias towards male krill and an overestimation of krill length. We ...
Meeting Document : WG-EMM-05/26 : Autor(es): J.D. Lipsky, M.E. Goebel, C.S. Reiss and V. Loeb (USA)
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Trends of Antarctic fur seal population at SSSI No. 32, Livingston Island, South Shetlands, Antarctica
Abstract: We update in this paper the previously reported model for the Antarctic fur seal ... parameters to an environmental index (the Southern Ocean Oscillation Index- SOI). Two fur seal censuses were ... . From this, we estimated an overall increase of 17% in the total population, including in this figure a ... of the simple model used, and the weighted effect of the continuos data set during these last 8 years ...
Meeting Document : WG-EMM-99/16 : Autor(es): R. Hucke-Gaete, D. Torres, A. Aguayo, J. Acevedo and V. Vallejos (Chile)
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Statistical problems in krill stock hydroacoustic assessments
: Two primary issues are at question for hydroacoustic assessments of krill. The first is the methods ... -strength measurements. In the case of statistical methods, there are no clear guidelines for deciding what ... needs for improvements in sampling design and tests for systematic trends in survey data collected from ... to be not the absolute amount of biomass present in an area, but rather how it is distributed. The ... biomass present in an area, but rather how it is distributed. The issue of patchy years vs more even ... its own requirements to have sufficient for its offspring too. Figure 1 shows an example of this with ... patch dominated year) it can quickly obtain sufficient food for its needs. If, however, it must spend a ... HYDROACOUSTIC ASSESSMENTS M.C. Macaulay Abstract Two primary issues are at question for hydroacoustic ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 301–309 : Autor(es): Macaulay, M.C.
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Remarks on the natural mortality of Dissostichus eleginoides in Subarea 48.3
differences in M between fishing sites. On the other hand, when comparing various mean values of M for the ... curve hooks No. 14 and straight hooks No. 22. The general mean value of M calculated for the 44 analysed ... , Australia. BEVERTON, R.J.H. and S.J. HOLT, 1956. A review of methods for estimating mortality rates in ... sites. On the other hand, when comparing various mean values of M for the different cases, it was ... straight hooks No. 22. The general mean value of M calculated for the 44 analysed situations was 0.14 ... , captura total y una submuestra de 30 ejemplares por lance, de los cuales se obtuvo la composicion por ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 21–30 : Autor(es): Moreno, C.A. and P.S. Rubilar
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WG-DCH-84
-84/20 Review of the spatial and temporal distribution of the GDR fishery in the Atlantic sector of ... Doc Number Title WG-DCH-84/01 Points and questions about measuring effort for krill fishing that we ... . Gulland (FAO) WG-DCH-84/05 Some notes on the catch and effort statistics needed for stock assessment of ... proposals for basic information. Annex 8 to the Report of the 1983 Meeting of the Scientific Committee of ...
Meeting
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Precautionary management of the Antarctic krill fishery at small spatial scales in the context of regional climate variability: pros and cons of coastal buffers, closed areas and move-on rules
Abstract: In this paper, we briefly review recent environmental information for the Antarctic ... at small spatial scales. We present an example during the early Austral summer of 2015/2016, when sea ... ice conditions were extensive and led to unusual foraging conditions for gentoo penguins. Conditions ... three management tools that could provide conservation benefits for near-shore krill-dependent species ...
Meeting Document : SC-CAMLR-XXXV/BG/14 : Autor(es): Delegation of the United Kingdom
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Anthropogenic feather soiling, marine debris and fishing gear associated with seabirds at Bird Island, South Georgia, 1999/2000
. Quantities of fishing gear remained within the levels of previous years for all other species, except black ... , an unprecedented quantity of hooks (both with and without long-line attached) and monofilament long ... which were plastics) showed 75% and 93% increases from the previous maxima for wandering albatross and ... Approved Document Release Consent: No Delegation responsibility for releasing documents: CCAMLR ...
Meeting Document : SC-CAMLR-XIX/BG/04 : Autor(es): Delegation of the United Kingdom