Coral reefs are increasingly threatened by climate-driven disturbances, including coral disease outbreaks and corallivore predation, which can accelerate declines in coral cover and compromise ecosystem resilience. While seasonal peaks in coral disease and predator outbreaks are relatively well documented, significant knowledge gaps remain in understanding temporal dynamics during transitional periods and the early warning signs preceding disturbance events. Conventional monitoring programs are typically limited to seasonal surveys or outbreak responses, restricting the ability to detect fine-scale spatial and temporal changes in reef condition.
Fitzroy Island, located 29 km southeast of Cairns and surrounded by fringing reef within the Great Barrier Reef Marine Park, provides an opportunity to address these gaps through high-frequency monitoring under the Tourism Reef Protection Initiative. High-frequency surveys were conducted at three fixed reef sites—Shark Fin Bay, Welcome Bay, and Foxy’s Bay—to assess coral disease prevalence, corallivore abundance, and associated feeding scars, enabling the identification of patterns and trends that are not captured by conventional monitoring programs. Substantial variation in coral condition and disturbance patterns was observed among sites. Shark Fin Bay exhibited high live coral cover alongside elevated predator abundance, suggesting a relationship between prey availability and corallivore presence. Foxy’s Bay showed extensive degradation and minimal predator activity, likely reflecting reduced habitat quality following recent tropical lows. Welcome Bay displayed moderate predator density but comparatively high disease prevalence, indicating additional drivers such as terrestrial runoff and nutrient enrichment.
These findings help inform how high-frequency monitoring can address knowledge gaps in fine-scale spatial and temporal trends of coral disturbance. Importantly, this study illustrates how tourism-operator-led monitoring and collaboration can generate fine-scale temporal datasets that are difficult for traditional research programs to sustain. Beyond its local relevance, this approach has global significance, demonstrating how engaging reef-based stewards such as tourism operators can expand monitoring capacity across reefs worldwide. Incorporating such approaches into reef monitoring frameworks may improve early detection of disease and predator outbreaks, enhance understanding of disturbance dynamics, and support adaptive management strategies aimed at strengthening reef resilience.