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Article

The Sensitivity of Multi-spectral Satellite Sensors to Benthic Habitat Change

Center for Global Discovery and Conservation Science (GDCS), Arizona State University, Tempe, AZ 85281, USA
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Remote Sens. 2020, 12(3), 532; https://doi.org/10.3390/rs12030532
Received: 30 December 2019 / Revised: 26 January 2020 / Accepted: 4 February 2020 / Published: 6 February 2020
(This article belongs to the Section Ocean Remote Sensing)
Coral reef ecosystems are under stress due to human-driven climate change and coastal activities. Satellite-based monitoring approaches offer an alternative to traditional field sampling measurements for detecting coral reef composition changes, especially given the advantages in their broad spatial coverage and high temporal frequency. However, the effect of benthic composition changes on water-leaving reflectance remains underexplored. In this study, we examined benthic change detection abilities of four representative satellite sensors: Landsat-8, Sentinel-2, Planet Dove and SkySat. We measured the bottom reflectance of different benthic compositions (live coral, bleached coral, dead coral with algal cover, and sand) in the field and developed an analytical bottom-up radiative transfer model to simulate remote sensing reflectance at the water surface for different compositions at a variety of depths and in varying water clarity conditions. We found that green spectral wavelengths are best for monitoring benthic changes such as coral bleaching. Moreover, we quantified the advantages of high spatial resolution imaging for benthic change detection. Together, our results provide guidance as to the potential use of the latest generation of multi-spectral satellites for monitoring coral reef and other submerged coastal ecosystems. View Full-Text
Keywords: Landsat-8; Sentinel-2; Planet Dove; coral reef; benthic habitat; coastal region Landsat-8; Sentinel-2; Planet Dove; coral reef; benthic habitat; coastal region
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MDPI and ACS Style

Li, J.; Fabina, N.S.; Knapp, D.E.; Asner, G.P. The Sensitivity of Multi-spectral Satellite Sensors to Benthic Habitat Change. Remote Sens. 2020, 12, 532. https://doi.org/10.3390/rs12030532

AMA Style

Li J, Fabina NS, Knapp DE, Asner GP. The Sensitivity of Multi-spectral Satellite Sensors to Benthic Habitat Change. Remote Sensing. 2020; 12(3):532. https://doi.org/10.3390/rs12030532

Chicago/Turabian Style

Li, Jiwei, Nicholas S. Fabina, David E. Knapp, and Gregory P. Asner 2020. "The Sensitivity of Multi-spectral Satellite Sensors to Benthic Habitat Change" Remote Sensing 12, no. 3: 532. https://doi.org/10.3390/rs12030532

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