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Diel variation in sea grass dwelling shrimp: when to sample at night?

Published online by Cambridge University Press:  15 December 2006

S. De Grave ,
D. Livingston  and
M.R. Speight
S. De Grave
Affiliation:
University of Oxford, Department of Zoology, South Parks Road, Oxford, OX1 3PS, UK
D. Livingston
Affiliation:
University of Oxford, Department of Zoology, South Parks Road, Oxford, OX1 3PS, UK
M.R. Speight
Affiliation:
University of Oxford, Department of Zoology, South Parks Road, Oxford, OX1 3PS, UK
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Abstract

The present study investigates hourly variation in nocturnal abundance fluctuations in a tropical, Caribbean sea grass bed. As expected, results indicate that significant diel variation is present. In addition all dominant species show an abundance peak shortly after sunset, with numbers gradually declining throughout the night. It is therefore suggested that nocturnal samples are not only incorporated into any sampling regime, but that nocturnal samples are taken within two hours after sunset.

Type
Brief Report
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 86 , Issue 6 , December 2006 , pp. 1421 - 1422
Copyright
2006 Marine Biological Association of the United Kingdom

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