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Coral Reefs, Communities, and Conservation: The Wallace Line and Beyond

The Coral Triangle is the global epicentre of marine biodiversity, home to the highest diversity of coral reefs on Earth and millions of people who depend on them. This talk explores why this region is so biologically extraordinary, beginning with the Wallace Line, a historic biogeographical boundary that revealed how evolution, geography, and the sea shape life.

Drawing on field research from Indonesia, Malaysia, and Singapore, the talk examines how coral reefs, mangroves, and seagrass meadows function as an interconnected “roots to reefs” system, and how this connectivity underpins biodiversity and resilience. It highlights emerging approaches to coral reef restoration that combine drone and satellite mapping, AI-assisted analysis, and immersive 360° storytelling to evaluate ecological recovery at scales relevant to communities and Marine Protected Areas.

The talk highlights an evolution in conservation science, where advanced mapping and monitoring are paired with community-led restoration and immersive education. By retracing the Wallace Line through modern conservation expeditions, the presentation reimagines exploration as stewardship, where data, maps, and stories are returned to local communities to support learning, monitoring, and long-term care of coral reef ecosystems.

Speaker

Gretchen C. Coffman

Gretchen C. Coffman

Senior Lecturer, Department of Geography
Gretchen C. Coffman is a Senior Lecturer in the Department of Geography at the National University of Singapore, conservation biogeographer and restoration ecologist. Her research focuses on coral reef restoration, coastal biodiversity, and the use of geospatial technologies, such as drones, satellite imagery, and 3D mapping, to evaluate ecosystem recovery at meaningful ecological and community scales.

Her work spans Southeast Asia, with a particular focus on the Coral Triangle, where she collaborates closely with local communities, NGOs, and educators to develop participatory approaches to restoration and conservation education. Through her Tropical Restoration Ecology Lab (TRE Lab), she integrates science, storytelling, and immersive media to support community-based stewardship, aligned with the UN Decade on Ecosystem Restoration.

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