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  • CCAMLR Science, Volume 8 (2001):1–23

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CCAMLR Science, Volume 8 (2001):1–23

Journal Volume:
CCAMLR Science, Volume 8
Page Numbers:
1–23
Author(s):
Trathan, P.N., J.L. Watkins, A.W.A. Murray, A.S. Brierley, I. Everson, C. Goss, J. Priddle, K. Reid, P. Ward, R. Hewitt, D. Demer, M. Naganobu, S. Kawaguchi, V. Sushin, S.M. Kasatkina, S. Hedley, S. Kim and T. Pauly
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The CCAMLR-2000 Krill Synoptic Survey: a description of the rationale and design

Abstract / Description: 

The design of the CCAMLR-2000 Krill Synoptic Survey (CCAMLR-2000 Survey) is described. The primary objective of the survey was to improve estimates of the pre-exploitation biomass of krill which are used in models to estimate sustainable yield in Area 48. The survey design includes two large-scale oceanic strata: one in the southwest Atlantic located in the Scotia Sea, and the other to the north of the Antarctic Peninsula (CCAMLR Statistical Subareas 48.1,48.2,48.3 and 48.4). Within these large-scale strata, four mesoscale strata were included in the survey design; these were located close to the South Sandwich Islands, north of South Georgia, north of the South Orkney Islands and north of the South Shetland Islands. The rationale underlying the selection of the strata and survey boundaries is described. The methods used for selecting the location of each survey transect are explained and the planned cruise tracks for each of the four vessels participating in the survey are shown. Details are also described for adaptively modifying the survey during its execution. This includes information how net haul stations should be selected and how transects should be modified if the planned survey tracks cannot be completed.

The survey took place in  January-February 2000 and involved ships from Japan, Russia, UK and the USA. Scientists from many more CCAMLR Member States and the International Whaling Commission (IWC) took part. The survey is by far the biggest single exercise ever carried out by Members in support of the Convention. Full analysis of the results of the CCAMLR-2000 Survey will take several years and will result in a significant increase in the knowledge of krill length frequencies, biomass and distribution in the area studied.

This page was last modified on 11 Jan 2013

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