• P-ISSN 0974-6846 E-ISSN 0974-5645

Indian Journal of Science and Technology


Indian Journal of Science and Technology

Year: 2021, Volume: 14, Issue: 15, Pages: 1177-1183

Original Article

Presence of Light Pollution as a Latent Anthropogenic Influence of Bat Dispersal in Mindanao, Philippines

Received Date:23 January 2021, Accepted Date:06 April 2021, Published Date:29 April 2021


Background/Objectives: The study aimed to determine the extent of the presence of light pollution dispersal in Mindanao, Philippines that influences bat dispersal. Methods/Statistical analysis: Satellite imagery and radiance data (10-9 W/cm2*sr) from Visible Infrared Imaging Radiometer Suite (VIIRS) were processed using different python codes to identify the pixel count as the extent of light pollution radiance in Mindanao, Philippines from 2012 to 2019. The VIIRS was set at an overlay of 60 transparency levels thru Sky Quality Meter (SQM) at 85 transparency levels for a hybrid base map at an altitude of 100 km to cover the island of Mindanao. Findings: The increase and spread of pixel count as light pollution in the region from 2012 to 2019 have shown significant expanse in the region. Major cities were found to be predominating evidence of light pollution as it stretches from town to town with intensifying pixel counts year by year. Having a strong positive linear relationship as identified R2 value and the increase of pixel counts throughout the parameters of the study is also anticipated that the site shows possible progress towards the community. It shows the increasing radiance and the extreme dispersion on the amount of light being emitted from the ground is critical towards bats dispersion throughout the region. Novelty/Applications: This study fosters evidence the increasing light pollution in a bat-prone region might cause possible bat dispersal related to BtCoV and/or any disease-carrying species present in Mindanao, Philippines.

Keywords: Light Pollution; Bat Dispersal; Mindanao; Philippines


  1. Lacoeuilhe A, Machon N, Julien JF, Bocq AL, Kerbiriou C. The Influence of Low Intensities of Light Pollution on Bat Communities in a Semi-Natural Context. PLoS ONE. 2014;9(10):e103042. Available from: https://dx.doi.org/10.1371/journal.pone.0103042
  2. Khan ZA, Yumnamcha T, Mondal G, Devi SD, Rajiv C, Labala RK, et al. Artificial Light at Night (ALAN): A Potential Anthropogenic Component for the COVID-19 and HCoVs Outbreak. Frontiers in Endocrinology. 2020;11:1–15. Available from: https://dx.doi.org/10.3389/fendo.2020.00622
  3. Davies TW, McKee D, Fishwick J, Tidau S, Smyth T. Biologically important artificial light at night on the seafloor. Scientific Reports. 2020;10(1). Available from: https://dx.doi.org/10.1038/s41598-020-69461-6
  4. Levin N, Kyba CCM, Zhang Q, Miguel ASd, Román MO, Li X, et al. Remote sensing of night lights: A review and an outlook for the future. Remote Sensing of Environment. 2020;237. Available from: https://dx.doi.org/10.1016/j.rse.2019.111443
  5. Bolliger J, Hennet T, Wermelinger B, Blum S, Haller J, Obrist MK. Low impact of two LED colors on nocturnal insect abundance and bat activity in a peri-urban environment. Journal of Insect Conservation. 2020;24(4):625–635. Available from: https://dx.doi.org/10.1007/s10841-020-00235-1
  6. Tamir R, Lerner A, Haspel C, Dubinsky Z, Iluz D. The spectral and spatial distribution of light pollution in the waters of the northern Gulf of Aqaba (Eilat) Scientific Reports. 2017;7(1):1–10. Available from: https://dx.doi.org/10.1038/srep42329
  7. Miguel ASd, Kyba CCM, Zamorano J, Gallego J, Gaston KJ. The nature of the diffuse light near cities detected in nighttime satellite imagery. Scientific Reports. 2020;10(1):1–16. Available from: https://dx.doi.org/10.1038/s41598-020-64673-2
  8. Bennie J, Davies TW, Duffy JP, Inger R, Gaston KJ. Contrasting trends in light pollution across Europe based on satellite observed night time lights. Scientific Reports. 2015;4(1):1–6. Available from: https://dx.doi.org/10.1038/srep03789
  9. Operti FG, Oliveira EA, Carmona HA, Machado JC, Andrade JS. The light pollution as a surrogate for urban population of the US cities. Physica A: Statistical Mechanics and its Applications. 2018;492:1088–1096. Available from: https://dx.doi.org/10.1016/j.physa.2017.11.039
  10. Garratt MJ, Jenkins SR, Davies TW. Mapping the consequences of artificial light at night for intertidal ecosystems. Science of The Total Environment. 2019;691:760–768. Available from: https://dx.doi.org/10.1016/j.scitotenv.2019.07.156
  11. Stone EL, Harris S, Jones G. Impacts of artificial lighting on bats: a review of challenges and solutions. Mammalian Biology. 2015;80(3):213–219. Available from: https://dx.doi.org/10.1016/j.mambio.2015.02.004
  12. Straka TM. Tree Cover Mediates the Effect of Artificial Light on Urban Bats. Frontiers in Ecology and Evolution. 2019;7:1–11. Available from: https://doi.org/10.3389/fevo.2019.00091
  13. Haddock JK, Threlfall CG, Law B, Hochuli DF. Light pollution at the urban forest edge negatively impacts insectivorous bats. Biological Conservation. 2019;236:17–28. Available from: https://dx.doi.org/10.1016/j.biocon.2019.05.016
  14. Russo D, Ancillotto L. Sensitivity of bats to urbanization: a review. Mammalian Biology. 2015;80(3):205–212. Available from: https://dx.doi.org/10.1016/j.mambio.2014.10.003
  15. Tampon NVT, Rabaya YMC, Malbog KMA, Burgos SC, Bacus MG, Jr KL, et al. First Molecular Evidence for Bat Betacoronavirus in Mindanao. Philippine Journal of Science. 2020;149(1):91–94. Available from: https://philjournalsci.dost.gov.ph/images/pdf/pjs_pdf/vol149no1/first_molecular_evidence_for_bat_betacoronavirus_in_mindanao_.pdf


© 2021 Guido & Kalaw.This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Published By Indian Society for Education and Environment (iSee)


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