Hewitt, R. P.; Watkins, J.; Naganobu, M.; Sushin, V.; Brierley, A. S.; Demer, D.; Kasatkina, S.; Takao, Y.; Goss, C.; Malyshko, A.; Brandon, M.; Kawaguchi, S.; Siegel, V.; Trathan, P.; Emery, J.; Everson, I. and Miller, D.
(2004).
| DOI (Digital Object Identifier) Link: | https://doi.org/10.1016/j.dsr2.2004.06.011 |
|---|---|
| Google Scholar: | Look up in Google Scholar |
Abstract
In January and February 2000, a collaborative survey designed to assess the biomass of Antarctic krill across the Scotia Sea was conducted aboard research vessels from Japan, Russia, the UK and the USA using active acoustic and net sampling. Survey design, sampling protocols, and data analysis procedures are described. Mean krill density across the survey area was estimated to be 21.4 gm_2, and total biomass was estimated to be 44.3 million tonnes (CV 11.4%). This biomass estimate leads to a revised estimate of precautionary yield for krill in the Scotia Sea of 4 million tonnes. However, before the fishery can be permitted to expand to this level, it will be necessary to establish mechanisms to avoid concentration of fishing effort, particularly near colonies of land-breeding krill predators, and to consider the effects of krill immigrating into the region from multiple sources.
| Item Type: | Article |
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| ISSN: | 0967-0645 |
| Keywords: | Krill; Scotia Sea; Bo; oceanography |
| Academic Unit/School: | Faculty of Science, Technology, Engineering and Mathematics (STEM) > Environment, Earth and Ecosystem Sciences Faculty of Science, Technology, Engineering and Mathematics (STEM) |
| Interdisciplinary Research Centre: | Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR) |
| Item ID: | 9122 |
| Depositing User: | Mark Brandon |
| Date Deposited: | 21 Sep 2007 |
| Last Modified: | 17 Nov 2016 14:55 |
| URI: | http://oro.open.ac.uk/id/eprint/9122 |
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