Search results
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Quantification of Southern Ocean phytoplankton biomass and primary productivity via satellite observations and biogeochemical models (submitted to the 2008 Joint CCAMLR-IWC Workshop)
(Jenkins, 1988; Falkowski et al., 1991). This field has devel- oped by applying photosynthesis models ... of a sat- ellite algorithm stems from the global coverage afforded by satellite ocean colour data ... accuracy values are better (lower by as much as 12%) for each sensor, but the sample size is smaller. CZCS ... based on location and day of year, Copt can be fairly well estimated by Csat (Behrenfeld and Falkowski ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 247–265 : Author(s): P.G. Strutton, N.S. Lovenduski, M. Mongin and R. Matear
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The ecosystem approach to managing fisheries: achieving conservation objectives for predators of fished species
to protecting predators of target species by adopting the krill yield model Ecosystem approach ... by Butterworth and his co-workers (e.g. Butterwort11 and Thornson, 1995; Thomso~~ et al., 2000) and ... performance of the management system could be achieved by altering t l~e rules or other aspects of the ... met by fisheries. These points are illustrated using a simple simulation model that could be used as ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 37–64 : Author(s): Constable, A.J
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Distribution and relative abundance of Antarctic toothfish (Dissostichus mawsoni) on the Ross Sea shelf
in CCAMLR Subarea 88.1 has been operating since 1996/97, conducted by commercial longliners (Figure ... 1). A large amount of data on toothfish and the associ- ated by-catch has been collected. Annual ... , movement and trophic status, much of which was reviewed and summarised by Hanchet et al. (2003) and ... being fished by the exploratory fishery, the spatial management of the fishery and an understanding of ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 33–51 : Author(s): Hanchet, S.M., S. Mormede and A. Dunn
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An impact assessment framework for bottom fishing methods in the CAMLR Convention Area
workshop attended by rele- vant experts (including benthic ecologists, fisheries managers, fisheries ... observers and vessel captains with extensive experience in the Ross Sea fishery), followed by extensive ... of the approach adopted by the New Zealand Antarctic Bottom Fishing Impact Assessment Workshop ... (hereafter ‘NZ Workshop’) to assess and quantify the likely cumulative impact on potential VMEs by New ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 195–210 : Author(s): Sharp, B.R., S.J. Parker and N. Smith
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Analyses of acoustic line-transect data from the waters around South Georgia: estimation of krill (Euphausia superba Dana) – biomass
interdisciplinary program of data collection, various aspects of which have been discussed by Priddle et al. (1986 ... ) and Atkinson and Peck (1988). The survey region was a 180 by 240 n mile box centred on the island of ... of 29.73 mm. This mean size is similar to that of the krill used by Everson et al. (1990) to ... = 1, .. ,N strata. The density of a sample unit is then given by: 1\ b .. p" - ~ Z) - Lij bij ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 225–243 : Author(s): Murphy, E., I. Everson and A. Murray
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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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A possible framework in which to consider plausible models of the Antarctic marine ecosystem for evaluating krill management procedures
; Constable et al., 2000; Kock, 2000). A work plan has been adopted by CCAMLR to assist in the devel- opment ... impacted by its environment (other populations as well as the physical environment). This approach is ... element is largely governed by its magnitude (abundance). The ‘stage’ of the element may be important ... stage is not constant and governed by the present age structure. The remainder of this section ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 99–117 : Author(s): Constable, A.J
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Integration of CPUE data into assessments using the Generalised Yield Model
) and driven by estimates of recruitment strength derived from trawl surveys (Constable and de la Mare ... most recent years, and that the trend in biomass predicted by the GYM had shown a smaller decline ... than that indicated by the standardised CPUEs. On these grounds, it recommended that the catch limits ... recommended that the catch limit should be equal to that indicated by the GYM analysis (SC-CAMLR, 1999 ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 65–74 : Author(s): Kirkwood, G.P. and A.J. Constable
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The effects of monitoring procedures on Adélie penguins
). Disturbance to individuals and colonies by these research activities may result in decreased breeding ... altering or biasing the very data we are attempting to collect. The demographic studies recommended by ... . The system utilises implanted transponders for identification of individual birds. By using ... 550 nes ts ) were individually identified by means of either an electronic t r ansponde r tag ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 155–164 : Author(s): Clarke, J. and K. Kerry