Aquat. Living Resour.
Volume 16, Number 3, July 2003Acoustics in Fisheries and Aquatic Ecology. Part 2
|Page(s)||293 - 298|
|Published online||15 July 2003|
Split-beam target tracking can be used to study the swimming behaviour of deep-living plankton in situ
Department of Biology, University of Oslo, P.O. Box 1064, Blindern 0316, Oslo, Norway
Corresponding author: firstname.lastname@example.org
Accepted: 24 January 2003
A scattering layer consisting mainly of krill (Meganyctiphanes norvegica) was studied with a submersible transducer, to assess the behaviour of individual organisms in situ by means of split-beam target tracking. Individuals were resolved and tracked, but a rapid increase in average swimming speeds with depth suggested that inaccuracies in the angular estimates affected the estimates. Attempts were made to smooth the tracks during post-processing. Smoothed speeds suggested that most (>78%) invertebrates swam at speeds below 12 cm s–1 (mode ~4 cm s–1), with components of speed larger in the horizontal plane than in the vertical.
Key words: Behaviour / Invertebrate / Swimming / Speed / Target tracking
© Elsevier, IRD, Inra, Ifremer, Cemagref, 2003
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.