Changes in Benthic Cover in the South Atoll of Tubbataha Reefs due to Possible Eutrophication

Recent research at Tubbataha Reefs Natural Park reveals concerning changes in benthic cover, likely linked to eutrophication. Specifically, Site 4 in the South Atoll has shown significant declines in hard coral cover (HCC) and increases in algae, with cyanobacteria dominating space in 2018 and sponges overgrowing corals by 2019. These shifts are attributed to increased guano-derived nutrients in lagoon waters, which may trigger a long-term decline in coral health. The study highlights the need for enhanced monitoring to address potential environmental threats to this globally significant marine protected area (MPA).

Licuanan, W., & Bahinting, S. E. (2020). Changes in Benthic Cover in the South Atoll of Tubbataha Reefs due to Possible Eutrophication. Philippine Journal of Science, 150(1). https://doi.org/10.56899/150.01.11