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Towards Quantitative Optical Cross Sections in Entomological Laser Radar - Potential of Temporal and Spherical Parameterizations for Identifying Atmospheric Fauna.

Author:
  • Mikkel Brydegaard
Publishing year: 2015
Language: English
Publication/Series: PLoS ONE
Volume: 10
Issue: 8
Document type: Journal article
Publisher: Public Library of Science

Abstract english

In recent years, the field of remote sensing of birds and insects in the atmosphere (the aerial fauna) has advanced considerably, and modern electro-optic methods now allow the assessment of the abundance and fluxes of pests and beneficials on a landscape scale. These techniques have the potential to significantly increase our understanding of, and ability to quantify and manage, the ecological environment. This paper presents a concept whereby laser radar observations of atmospheric fauna can be parameterized and table values for absolute cross sections can be catalogued to allow for the study of focal species such as disease vectors and pests. Wing-beat oscillations are parameterized with a discrete set of harmonics and the spherical scatter function is parameterized by a reduced set of symmetrical spherical harmonics. A first order spherical model for insect scatter is presented and supported experimentally, showing angular dependence of wing beat harmonic content. The presented method promises to give insights into the flight heading directions of species in the atmosphere and has the potential to shed light onto the km-range spread of pests and disease vectors.

Keywords

  • Accelerator Physics and Instrumentation

Other

Published
  • ISSN: 1932-6203
Mikkel Brygdegaard
E-mail: mikkel.brydegaard [at] forbrf.lth.se

Associate senior lecturer

Combustion Physics

+46 46 222 76 57

E424

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Centre for Animal Movement Research
Evolutionary Ecology, Department of Biology
Ecology building S-223 62 Lund Sweden