Coastal infrastructure is expanding rapidly, often replacing natural habitats with surfaces that support low ecological diversity. This study evaluates the use of 3D-printed eco-engineered wraps designed to mimic natural habitat complexity and enhance biodiversity on marine pylons in tropical Australia.
A year-long field experiment compared eco-engineered and unmodified pylons across shaded and sun-exposed orientations and tidal heights. Biodiversity was assessed using non-destructive quadrat surveys, and microhabitat temperatures were monitored to examine the role of thermal conditions in structuring communities.
Preliminary results show that eco-engineered structures moderated thermal extremes, with temperatures reduced by an average of 1.2°C, particularly in shaded treatments. These structures supported higher species diversity compared to unmodified pylons, which were dominated by barnacles. Mobile fauna, including crabs, were frequently observed within eco-engineered features, suggesting added habitat value not fully captured by standard survey methods.
These findings demonstrate the potential for eco-engineering to improve the ecological function of coastal infrastructure. Ongoing analyses will further resolve the relative influence of habitat complexity and environmental exposure on community composition.