Split-beam target tracking can be used to study the swimming behaviour of deep-living plankton in situ

Thor Aleksander Klevjer; Stein Kaartvedt

doi:10.1016/S0990-7440(03)00013-5

Split-beam target tracking can be used to study the swimming behaviour of deep-living plankton in situ

Thor Aleksander Klevjer^*, Stein Kaartvedt

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	293-298
Number of pages	6
Journal	Aquatic Living Resources
Volume	16
Issue number	3
DOIs	https://doi.org/10.1016/S0990-7440(03)00013-5
State	Published - Jul 2003
Externally published	Yes

Keywords

Behaviour
Invertebrate
Speed
Swimming
Target tracking

ASJC Scopus subject areas

Aquatic Science

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10.1016/S0990-7440(03)00013-5

Cite this

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title = "Split-beam target tracking can be used to study the swimming behaviour of deep-living plankton in situ",

abstract = "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.",

keywords = "Behaviour, Invertebrate, Speed, Swimming, Target tracking",

author = "Klevjer, {Thor Aleksander} and Stein Kaartvedt",

year = "2003",

month = jul,

doi = "10.1016/S0990-7440(03)00013-5",

language = "English (US)",

volume = "16",

pages = "293--298",

journal = "Aquatic Living Resources",

issn = "0990-7440",

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T1 - Split-beam target tracking can be used to study the swimming behaviour of deep-living plankton in situ

AU - Klevjer, Thor Aleksander

AU - Kaartvedt, Stein

PY - 2003/7

Y1 - 2003/7

N2 - 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.

AB - 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.

KW - Behaviour

KW - Invertebrate

KW - Speed

KW - Swimming

KW - Target tracking

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DO - 10.1016/S0990-7440(03)00013-5

M3 - Article

AN - SCOPUS:0041694332

SN - 0990-7440

VL - 16

SP - 293

EP - 298

JO - Aquatic Living Resources

JF - Aquatic Living Resources

IS - 3

ER -

Split-beam target tracking can be used to study the swimming behaviour of deep-living plankton in situ

Abstract

Keywords

ASJC Scopus subject areas

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