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The use of vertical-looking radar to continuously monitor the insect fauna flying at altitude over southern England

Published online by Cambridge University Press:  09 March 2007

A.D. Smith ,
D.R. Reynolds  and
J.R. Riley
A.D. Smith*
Affiliation:
Radar Entomology Unit, Natural Resources Institute, University of Greenwich, North Site, Leigh Sinton Road, Malvern, Worcestershire WR14 1LL, UK
D.R. Reynolds
Affiliation:
Radar Entomology Unit, Natural Resources Institute, University of Greenwich, North Site, Leigh Sinton Road, Malvern, Worcestershire WR14 1LL, UK
J.R. Riley*
Affiliation:
Radar Entomology Unit, Natural Resources Institute, University of Greenwich, North Site, Leigh Sinton Road, Malvern, Worcestershire WR14 1LL, UK
*
*Fax: 01684 582984 E-mail: jriley@nriradar.demon.co.uk
*Fax: 01684 582984 E-mail: jriley@nriradar.demon.co.uk
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Abstract

The continuous automatic monitoring of the aerial density, biomass and relative diversity of high-flying insect faunas has been made practicable by a new, vertical-looking radar. This inexpensive radar system, with its novel signal analysis capability, represents a major advance over earlier vertical-beam radars because it provides estimates of the body mass of individual overflying insects, as well as measurements of their direction and speed of movement. This paper summarizes data collected over a three-month period by the new radar in the height range from 150 m to c.1 km, over agricultural land in Worcestershire, England. The day-to-day variation in the numbers of insects and their altitudinal and diurnal patterns of flight activity are presented. Examples are also given of distributions of mass, displacement speed and direction, and orientation direction. The potential of the new radar for various research and operational monitoring tasks is briefly discussed.

Type
Research Article
Information
Bulletin of Entomological Research , Volume 90 , Issue 3 , June 2000 , pp. 265 - 277
Copyright
Copyright © Cambridge University Press 2000

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