PRINCIPAL INVESTIGATOR: Andrea Kealoha
Co-INVESTIGATOR: Katie Shamberger
PI-CASC Graduate Scholar: Raffi Isah
Research Track: Ocean Acidification

Coral reefs are threatened by a range of stressors, including those related to global climate change and local land-use. These stressors decrease coral calcification, increase dissolution and bioerosion of the calcium carbonate (CaCO₃) reef structure, and shift ecosystem composition from coral to algae-dominated reefs. This project quantifies CaCO₃ accretion and bioerosion rates across sites on Maui that experience a range of stressors, to investigate which ones dominate the changes over the last decade, global climate change impacts or locally induced, anthropogenic stresses. Researchers plan to quantify accretion and bioerosion rate changes over a eutrophication and acidification gradient, and compare present day rates to those measured approximately ten years ago, in order to determine the relative impacts of the different scale stressors on coral reefs.

Outcomes will include information for resource managers on how local and global stressors affect coral reef persistence, with research results and recommendations integrated into existing and developing management plans. There are also plans to produce an educational video that communicates the importance of coral reefs, the impacts of anthropogenic stressors on coral reef health, and our kuleana to perform research in a way that honors people, places, culture, and traditional knowledge.