Search results
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Movement and growth of tagged Dissostichus eleginoides around South Georgia and Shag Rocks (Subarea 48.3)
, CCAMLR Marlow et al. 103 INTRODUCTION The tagging program is coordinated by the Marine Resources ... ). Tagging has subsequently been carried out by CCAMLR observers on three experimental pot fi shing vessels ... , three longlining vessels, and again by scientists on the 2002 South Georgia groundfi sh survey ... . Groundfi sh Surveys The 2000 survey targeted juvenile toothfi sh for tagging by carrying out three trawls ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 101–111 : Author(s): Marlow, T.R., D.J. Agnew, M.G. Purves and I. Everson
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Telemetry monitoring of ecological resources
using a directional antenna and receiver2. Data are usually recorded manually on paper by the observer ... transmission range, transmission life and weight. This correlation is determined by the energy source, with ... on the ground. - 499 - Additional parameters can be measured using these transmitters by the ... then be used to indicate activity by increasing the pulse rate as a function of switch closure ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 495-511 : Author(s): Kuechle, V.B.
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Standardization of fishing effort for Champsocephalus gunnari in the South Georgia area (Subarea 48.3)
paper by Frolkina and Gasiukov (1989). This task is complicated by the fact that fishing for C ... . gunnari is. characterized by a considerable intra-annual irregularity and marked dynamics. Whereas ... fishing was at first carried out by means of bottom trawls, in recent years midwater trawls have been ... sequence of catch-per-unit-effort values was developed by years of fishing. Standardized values of fishing ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 327–336 : Author(s): Gasiukov, P.S.
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Preliminary analyses of data collected during experimental phases of the 1994/95 and 1995/96 Antarctic crab fishing seasons
with frozen herring and the carcasses of various fishes caught as by-catch. Haul-specific soak times ... saturate the gear. The data analysed in this paper were provided by scientific observers. There were ... -specific string identification number, location (identified by the squares drawn in Figure l), CPUE, mid ... and Table 1: Summary statistics for data collected from hauls made by the FV Anzerican Clzanzpion ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 141–159 : Author(s): Watters, G
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Acoustic estimates of krill biomass in the Elephant Island area: 1981–1993
92093, USA (Supported by the Hertz Foundation) Abstract Acoustic estimates of krill biomass in the ... biomass estimates could be useful. This paper presents such a table, augmented by 1993 survey results ... , for consideration by the Working Group at its 1993 meeting. DATA SOURCES Macaulay et al. (1984 ... conducted by Macaulay in the austral summers of 1981, 1984, 1987,1988 and 1989, when normalised to a ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 1–5 : Author(s): Hewitt, R.P. and D.A. Demer
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The sensitivity of multiple output statistics to input parameters in a krill–predator–fishery ecosystem dynamics model
(SSMUs) proposed by Hewitt et al. (2004) (Figure 1). During its development, this model was variously ... and 3 matrices). In the 15 SSMU–four predator configuration developed by Watters et al. (2013), it ... uncertainties about ecosystem opera- tion that were identified by CCAMLR scientific working groups (SC-CAMLR ... correspond to the goals of ecosystem-based management as defined by McLeod and Leslie (2009): ecosystem ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 97–118 : Author(s): Hill, S.L. and J. Matthews
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An assessment of toothfish in Subarea 48.3 using CASAL
and selectivity, n is found as 1,max ,2 ( ) , , 1, 1, 1 (1 )(1 ) ( ) Y Y age Y y M Y yz ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 65–95 : Author(s): Hillary, R.M., G.P. Kirkwood and D.J. Agnew
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Survey design to estimate krill abundance during FIBEX
. 3. The depth, size and density of swarms should be estimated either by processing of digitised ... result being a stratified random sample of transects analysable by standard statistical methods as ... recommended, for example, by Cochran (1977). For a given subarea (stratum) the direction of transects was ... being determined by the limit of the krill population. Since this limit had to be defined during the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 253–263 : Author(s): Everson, I., I. Hampton and G.M. Jolly
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Assessment and tag program adaption methods for exploratory fisheries in the CAMLR Convention Area: an example application for Division 58.4.3a
in the case of by-catch species (Agnew et al., 2006) and for new and exploratory fisheries, then it ... could be used in the new/exploratory/by-catch fishery context should be able to deal with both tagging ... Subarea 48.3 is then compared to the precision in the abundance predicted by the integrated stock ... dynamics of the biomass, B, are given by: 1 1 1 m L IUU y y y y y yB B rB B C K C K . (1) Here, y ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 101–113 : Author(s): Hillary, R.M
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Small scale krill surveys: simulations based on observed euphausiid distributions
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ByX npe,l{JIO:>KeHHbIX cxeM cbeMOK. MO ... Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 245–256 : Author(s): Agnew, D.J. and S. Nicol