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Dual-Band Infrared ...
Dual-Band Infrared Scheimpflug Lidar Reveals Insect Activity in a Tropical Cloud Forest
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- Santos, Victor (författare)
- National Polytechnic School, Ecuador
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- Costa-Vera, Cesar (författare)
- National Polytechnic School, Ecuador
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- Rivera-Parra, Pamela (författare)
- National Polytechnic School, Ecuador
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- Burneo, Santiago (författare)
- Pontifical Catholic University Of Ecuador
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- Molina, Juan (författare)
- National Polytechnic School, Ecuador
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- Encalada, Diana (författare)
- Pontifical Catholic University Of Ecuador
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- Salvador, Jacobo (författare)
- Lund University,Lunds universitet,Förbränningsfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Combustion Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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- Brydegaard, Mikkel (författare)
- Lund University,Lunds universitet,BECC: Biodiversity and Ecosystem services in a Changing Climate,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Förbränningsfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,CAnMove - Centrum för forskning om djurs spridning och flyttning,Forskargrupper vid Lunds universitet,LTH profilområde: Aerosoler,LTH profilområden,LTH profilområde: Avancerade ljuskällor,LTH profilområde: Energiomställningen,LU profilområde: Ljus och material,Lunds universitets profilområden,Centre for Environmental and Climate Science (CEC),Faculty of Science,Combustion Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,CAnMove - Centre for Animal Movement Research,Lund University Research Groups,LTH Profile Area: Aerosols,LTH Profile areas,Faculty of Engineering, LTH,LTH Profile Area: Photon Science and Technology,Faculty of Engineering, LTH,LTH Profile Area: The Energy Transition,Faculty of Engineering, LTH,LU Profile Area: Light and Materials,Lund University Profile areas,Norsk Elektro Optikk AS
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(creator_code:org_t)
- 2023
- 2023
- Engelska.
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Ingår i: Applied Spectroscopy. - 1943-3530. ; 77:6, s. 593-602
- Relaterad länk:
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https://portal.resea... (primary) (free)
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http://dx.doi.org/10... (free)
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We describe an entomological dual-band 808 and 980 nm lidar system which has been implemented in a tropical cloud forest (Ecuador). The system was successfully tested at a sample rate of 5 kHz in a cloud forest during challenging foggy conditions (extinction coefficients up to 20 km–1). At times, the backscattered signal could be retrieved from a distance of 2.929 km. We present insect and bat observations up to 200 m during a single night with an emphasis on fog aspects, potentials, and benefits of such dual-band systems. We demonstrate that the modulation contrast between insects and fog is high in the frequency domain compared to intensity in the time domain, thus allowing for better identification and quantification in misty forests. Oscillatory lidar extinction effects are shown in this work for the first time, caused by the combination of dense fog and large moths partially obstructing the beam. We demonstrate here an interesting case of a moth where left- and right-wing movements induced oscillations in both intensity and pixel spread. In addition, we were able to identify the dorsal and ventral sides of the wings by estimating the corresponding melanization with the dual-band lidar. We demonstrate that the wing beat trajectories in the dual-band parameter space are complementary rather than covarying or redundant, thus a dual-band entomological lidar approach to biodiversity studies is feasible in situ and endows species specificity differentiation. Future improvements are discussed. The introduction of these methodologies opens the door to a wealth of possible experiments to monitor, understand, and safeguard the biological resources of one of the most biodiverse countries on Earth.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Zoologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Zoology (hsv//eng)
Nyckelord
- Scheimpflug lidar
- entomological sensor
- dual-band ranger
- insect activity
- foggy conditions
- frequency domain
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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