Ecological Engineering of Coastal Infrastructure

Ecological engineering of coastal infrastructure involves the deliberate integration of biological and physical design elements into hard structures—such as seawalls, breakwaters and piers—to enhance habitat complexity, biodiversity and ecosystem functioning. Traditional “grey” coastal defences often simplify habitat topography and reduce ecological connectivity, leading to lower species richness and impaired processes such as primary productivity and nutrient cycling. Eco-engineering approaches restore structural heterogeneity through textured surfaces, crevices, rock pools or biogenic modules, promoting colonisation by key taxa (for example, habitat-forming algae and filter feeders) and re-establishing essential functions like water filtration and carbon sequestration. Successful interventions are context dependent, requiring consideration of tidal regimes, local hydrodynamics and species pools. By balancing engineering requirements with ecological goals, these nature-inspired modifications offer a practical pathway to mitigate habitat loss, strengthen coastal resilience against climate change and reconcile urban development with marine conservation on a global scale.

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Ecological Engineering of Coastal Infrastructure publication trend

The graph below shows the total number of articles in ecological engineering of coastal infrastructure across all publications each year (not limited to Nature Index journals).

Technical terms

Eco-engineering: The purposeful design or modification of built structures to support ecological functions and biodiversity alongside engineering objectives.

Habitat complexity: The three-dimensional variability of substrates and structures that provides niches for diverse organisms, influencing species richness and ecosystem function.

Habitat-forming algae: Macroalgae that create physical structure and refuge, supporting food webs and enhancing productivity in coastal ecosystems.

Filter feeders: Organisms such as oysters and mussels that remove particulate matter from the water column, contributing to water clarity and nutrient cycling.

Primary productivity: The rate at which photosynthetic organisms convert inorganic carbon into organic matter, comprising net (NPP) and gross (GPP) measures.

Community respiration: The collective consumption of organic matter by all organisms in a community, indicating metabolic activity and ecosystem energy use.

References

1. Complexity-functioning relationships differ across different environmental conditions. Journal of Environmental Management (2024).
2. Marine infrastructure support fewer producers and more filter feeders than natural habitats: a review and meta-analysis. Environmental Research Letters (2024).
3. Design catalogue for eco-engineering of coastal artificial structures: a multifunctional approach for stakeholders and end-users. Urban Ecosystems (2019).