In the eastern reef areas like Dam Tre and Hon Cau, coral bleaching ranges from 80-100%, with 15-20% newly dead corals. Western areas show 60-70% bleaching, with 10% newly dead corals. The presence of Crown-of-thorns starfish and sediment deposits also contribute to reef damage.
The NOAA predicted global coral bleaching between April and October 2024, with Con Dao affected from mid-May to early June. Water temperatures exceeding 30°C are the primary cause, leading to the loss of symbiotic algae essential for coral health.
To manage this crisis, Con Dao National Park needs to collect data on temperature and salinity and reassess the reefs in July. Long-term monitoring and reducing human impact on reefs are crucial. Current coral restoration plans are postponed due to the weakened state of the corals.
Historically, coral bleaching has occurred globally in 1998, 2010, and 2016, and regionally in Vietnam in 1998, 2000, 2002, 2010, 2016, and 2019, indicating a recurring problem in the area.
Mr. Nguyen Khac Pho, Director of Con Dao National Park, emphasizes the need for a second survey to evaluate the coral reefs’ recovery and to adjust restoration plans accordingly. Efforts will also focus on reducing fishing, tourism, and pollution, and managing the Crown-of-thorns starfish population.
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Source: Vietnam Insider