Agricultural pest monitoring using fluorescence lidar techniques

Mei, Liang; Guan, Zuguang; Zhou, Hui; Lv, Jiajun; Zhu, Zhenggang; Cheng, Jiaan; Chen, Fenyan; Löfstedt, Christer; Svanberg, Sune; Somesfalean, Gabriel

doi:10.1007/s00340-011-4785-8

Cited by 40 publications

(30 citation statements)

References 18 publications

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Section: Remote Optical In-situ Insect Monitoringmentioning

confidence: 98%

“…Further, optical off-the-shelf components allow spectral-and polarimetric target classification, providing molecular as well as microstructure information [5,6]. Along these lines our group has previously demonstrated lidar remote detection of insects labeled with fluorescent powders, e.g., for assessing dispersal rates on a landscape scale [7,8].Today a major limitation in ecological entomology is that insect abundance assessment is based on sweep nets, light-, pheromone-or CO 2 -traps. Placing and emptying the traps are tedious operations and constitute a major effort, and the results are known to be biased with respect to the species, sexes and age groups caught.…”

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confidence: 99%

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SUPER RESOLUTION LASER RADAR WITH BLINKING ATMOSPHERIC PARTICLES ---- APPLICATION TO INTERACTING FLYING INSECTS (Invited Paper)

Brydegaard¹,

Gebru²,

Svanberg³

2014

PIER

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Abstract-Assessment of biodiversity of pollinators on the landscape scale or estimation of fluxes of disease-transmitting biting midges constitutes a major technical challenge today. We have developed a laser-radar system for field entomology based on the so called Scheimpflug principle and a continuouswave laser. The sample-rate of this method is unconstrained by the round-trip time of the light, and the method allows assessment of the fast oscillatory insect wing-beats and harmonics over kilometers range, e.g., for species identification and relating abundances to the topography. Whereas range resolution in conventional lidars is limited by the pulse duration, systems of the Scheimpflug type are limited by the diffraction of the telescopes. However, in the case of sparse occurrence of the atmospheric insects, where the optical cross-section oscillates, estimation of the range and spacing between individuals with a precision beyond the diffraction limit is now demonstrated. This enables studies of insect interaction processes in-situ. REMOTE OPTICAL IN-SITU INSECT MONITORINGAlthough tiny in size, the massive number of insects makes them play a key role in most eco-systems around the globe. While the Western world experiences significant economic losses in agriculture due to lack of biodiversity and the colony collapse disorder of pollinators [1], disease vectors and pests are feared and, to a great extent, blamed for stagnating the development in tropical parts of the world.Whereas birds can be ring marked or tracked via GPS or sun loggers, only the very largest and least abundant insects can be equipped with electronic tags [2,3]. While research in the area of radar entomology has been conducted over several decades and numerous interesting applications have been described [4], laser radar (light detection and ranging; lidar) systems in the optical regime have the potential of achieving a far better sensitivity and address and classify even the tiniest insects, simply because most insects are much smaller than the wavelengths of microwaves used in radars but larger than the wavelengths of light. Further, optical off-the-shelf components allow spectral-and polarimetric target classification, providing molecular as well as microstructure information [5,6]. Along these lines our group has previously demonstrated lidar remote detection of insects labeled with fluorescent powders, e.g., for assessing dispersal rates on a landscape scale [7,8].Today a major limitation in ecological entomology is that insect abundance assessment is based on sweep nets, light-, pheromone-or CO 2 -traps. Placing and emptying the traps are tedious operations and constitute a major effort, and the results are known to be biased with respect to the species, sexes and age groups caught. Although trapping allows precise studies with microscopes, mass spectrometry

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Section: Remote Optical In-situ Insect Monitoringmentioning

confidence: 98%

mentioning

confidence: 99%

SUPER RESOLUTION LASER RADAR WITH BLINKING ATMOSPHERIC PARTICLES ---- APPLICATION TO INTERACTING FLYING INSECTS (Invited Paper)

Brydegaard¹,

Gebru²,

Svanberg³

2014

PIER

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“…The data were stored by two laptop computers: one logging the data from the weather station and another one storing the data from the spectrometer on an external USB terabyte storage device. The cost of all equipment was roughly US$ 5k, two magnitudes lower than in [1]- [5]. The spectrometer records a dark spectrum of the black termination unless something within the FOV scatters the sunlight into the telescope.…”

Section: B Equipment and Optical Setupmentioning

confidence: 99%

“…In earlier papers, we mainly focused on the use of LIght Detection And Ranging (LIDAR) [1]- [5], and presented several approaches to insect marking experiments using laser-induced fluorescence. We are currently exploring several more compact and less expensive approaches.…”

Section: Introductionmentioning

confidence: 99%

Rare Events in Remote Dark-Field Spectroscopy: An Ecological Case Study of Insects

Runemark

Wellenreuther

Jayaweera

et al. 2012

IEEE J. Select. Topics Quantum Electron.

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Abstract-In this paper, a novel detection scheme for the monitoring of insect ecosystems is presented. Our method is based on the remote acquisition of passive sunlight scattering by two insect species. Procedures to identify rare events in remote dark-field spectroscopy are explained. We further demonstrate how to reduce the spectral representation, and how to discriminate between sexes, using a hierarchical clustering analysis. One-day cycle showing the temporal activities of the two sexes as well as data on activity patterns in relation to temperature and wind is presented. We also give a few examples of the potential use of the technique for studying interactions between sexes on a time scale of milliseconds.

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“…43 Apart from use in insect studies, 41 the instrument has also been used to obtain supporting data for the remote sensing of birds.…”

Section: A Ground Truth and Bio-aerosol Analysis For Remote Sensing mentioning

confidence: 99%

Versatile multispectral microscope based on light emitting diodes

Brydegaard

Merdasa

Jayaweera

et al. 2011

Review of Scientific Instruments

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Versatile multispectral microscope based on light emitting diodes.Brydegaard, Mikkel; Merdasa, Aboma; Jayaweera, Hiran; Ålebring, Jens; Svanberg, Sune General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal Take down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. We describe the development of a novel multispectral microscope, based on light-emitting diodes, capable of acquiring megapixel images in thirteen spectral bands from the ultraviolet to the near infrared. The system captures images and spectra in transmittance, reflectance, and scattering modes. We present as examples of applications ground truth measurements for remote sensing and parasitology diagnostics. The system is a general purpose scientific instrument that could be used to develop dedicated simplified instruments with optimal bands and mode selection.

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Agricultural pest monitoring using fluorescence lidar techniques

Cited by 40 publications

References 18 publications

SUPER RESOLUTION LASER RADAR WITH BLINKING ATMOSPHERIC PARTICLES ---- APPLICATION TO INTERACTING FLYING INSECTS (Invited Paper)

SUPER RESOLUTION LASER RADAR WITH BLINKING ATMOSPHERIC PARTICLES ---- APPLICATION TO INTERACTING FLYING INSECTS (Invited Paper)

Rare Events in Remote Dark-Field Spectroscopy: An Ecological Case Study of Insects

Versatile multispectral microscope based on light emitting diodes

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