Photogrammetry: Collaborative Efforts to Safeguard Our Coral Reefs

A collaborative research team from the University of St. Andrews in Scotland and the University of Lisbon in Portugal recently spent a month in Seychelles, working alongside the Seychelles Parks and Gardens Authority (SPGA). This partnership, formalized through a Memorandum of Understanding (MoU), aims to conduct comprehensive coral reef surveys across all five marine parks managed by the SPGA, utilizing the cutting-edge technique of photogrammetry.

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Photogrammetry is an innovative method that involves capturing thousands of continuous photographs of coral reefs and stitching them together to create large, high-resolution maps. This approach not only significantly reduces the time researchers spend in the field but also enhances the accuracy of their assessments regarding coral cover and species diversity. The detailed reef maps generated can be meticulously analyzed from the comfort of an office, allowing for more precise data interpretation.

In addition to its scientific benefits, coral reef photogrammetry produces striking visual outputs that serve as powerful tools for communication with stakeholders. These visualizations enable researchers to effectively illustrate environmental impacts, such as coral bleaching, through compelling before-and-after imagery. This capability is crucial for raising awareness and fostering discussions about coral reef conservation.

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The researchers are expected to return to the Seychelles in two years to re-survey the same sites. This follow-up will provide valuable insights into the changes occurring within these vital ecosystems, contributing to the ongoing efforts to protect and conserve the marine biodiversity of Seychelles’ marine protected areas.