Spatial and temporal variation of chlorophyll-a and nutrientsand the relationship between them in coastal waters of Bonaire

This study aimed to assess the spatial and temporal variation in water quality parameters, including chlorophyll-a, DIN, and PO43−, in Bonaire's coastal waters and to investigate the relationship between nutrients and chlorophyll-a values. Sampling was conducted at 12 sites along the west coast of Bonaire using a CTD for chlorophyll-a and a Niskin bottle for nutrients. The study reveals significant spatial and temporal variability in water quality parameters, with Bonaire showing higher chlorophyll-a values than Klein Bonaire due to terrestrial runoff and
possible upwelling. The findings also demonstrate a significant increase in chlorophyll-a concentration and a significant decrease in PO4
3− concentration over the past decade. The study underscores the importance of monitoring water quality and coral reef health to maintain the ecosystem's resilience against various stressors, including climate change, land development,
and overfishing. The results can inform management decisions to safeguard and restore coral reef ecosystems in Bonaire and other regions facing similar challenges