This study investigated the diversity, growth, and abundance of macroalgal species on reefs surrounding San Salvador Island, The Bahamas, amid ongoing ecological change. Coral reef ecosystems are undergoing significant shifts due to climate change, habitat degradation, and the spread of invasive species. Understanding macroalgal communities during this transition is critical, as these organisms play a key role in reef structure and function. We conducted quadrat sampling and photo surveys across three reefs representing different levels of degradation. Algal diversity, including variations in growth forms and color patterns, was estimated from photographic data collected at over 50 quadrat locations. A subset of samples was analyzed to confirm species identifications and to assess photosynthetic capacity and growth strategies through quantitative measurements of biomass and chlorophyll content. Reefs around San Salvador Island support a diverse macroalgal community, including calcareous algae (Halimeda spp.), fleshy browns (Dictyota spp.), greens (Udotea spp.), and filamentous species. This study establishes a valuable baseline for understanding macroalgal responses to environmental change and contributes to ongoing reef conservation efforts.
