Changes in Benthic Habitat Under Climate Pressure in Western Papua, Indonesia: Remote Sensing-Based Approach

This study looks at how the benthic habitat on Ayau Island; one of Indonesia's most significant coral reef habitats has changed from 2015 to 2019 and the linkage with local sea temperature trends. This study used Landsat 8 Operational Land Imager and National Oceanic and Atmospheric Administrat...

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Bibliographic Details
Published in:Journal of the Indian Society of Remote Sensing 2024-02, Vol.52 (2), p.291-304
Main Authors: Setiawati, Martiwi Diah, Ismayanti, Gusti Ayu, Hafizt, Muhammad, Avianto, Praditya, Antwi, Effah Kwabena
Format: Article
Language:English
Subjects:
Atmospheric correction
Change detection
Climate change
Climate change mitigation
Coral reef habitats
Coral reefs
Earth and Environmental Science
Earth Sciences
El Nino
Habitat loss
Habitats
Image classification
Image processing
Landsat
Landsat satellites
Remote sensing
Remote Sensing/Photogrammetry
Research Article
Satellite imagery
Sea surface temperature
Water circulation
Water column
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Summary:This study looks at how the benthic habitat on Ayau Island; one of Indonesia's most significant coral reef habitats has changed from 2015 to 2019 and the linkage with local sea temperature trends. This study used Landsat 8 Operational Land Imager and National Oceanic and Atmospheric Administration satellite remote sensing data and field data. The Landsat 8 satellite image processing includes atmospheric correction, sunglint correction, water column correction, image classification, and accuracy assessment. These steps were employed to understand change detection. The result revealed that the coral reef and seagrass decreased by 9.9 and 74.9% during the study period. However, the transition change was dynamic, with an annual rate of − 82.5 ha/year for coral reefs and − 108.95 ha/year for seagrass. The highest decrease in both benthic habitats occurred during the El-Nino Event, where the Sea Surface Temperature anomaly reached 1.5 °C. The massive habitat loss is alarming; thus, climate change mitigation and adaptation in the local context must be addressed.
ISSN:0255-660X
0974-3006
DOI:10.1007/s12524-024-01813-5