Sustainability in project initiation, planning and design: how to design more sustainable infrastructure
In the first DFSI Magazine, the concept of sustainability in relation to dredging projects was explained. How to integrate this concept in project design is the focus of this article, adapted from the third chapter of Dredging for Sustainable Infrastructure (2018), and provides the theme for this issue.
AquaForest: A nature-based solution for dredged sediments
AquaForest is a demonstration project led by Jan De Nul showcasing a green-grey approach, where dredged sediments are being reused to create 50 hectares of mangrove habitat in the Guayas Delta, Ecuador. The project aimed to advance knowledge on the conceptual design and eco-engineering approaches of mangrove habitats, while strengthening local engagement and generating diversified income opportunities for local communities. A new mangrove island was built in the end of 2024 and is currently being monitored to quantify the provision of ecosystem services over time with the aim of future upscaling of this type of nature-based solutions.
Bankbusters: Ecosystem-based riverbank management
Estuarine tidal wetlands offer vital ecosystem services, including flood protection, erosion control and water purification. However, these estuarine ecosystems actually face significant pressures caused by both human activities and natural forces, leading to habitat and ecosystem degradation and loss. The Bankbusters project adressess these issues by reusing soft dredged sediments to restore tidal marshes and mudflats as natural riverbank systems. As such, this initiative promotes biodiversity, enhances flood resilience and supports sustainable economic growth through innovative, eco-friendly and resilient solutions in the Scheldt estuary.
INTEGRATING DREDGING IN SUSTAINABLE DEVELOPMENT
Adapted from the second chapter of Dredging for Sustainable Infrastructure (2018), this article forms the foundation for this first issue and presents the concept of sustainability in relation to dredging projects. It describes the approaches and practices that are key to creating more sustainable solutions and infrastructure – a modern way of thinking about dredging.
NATURE-BASED SOLUTIONS IN BENIN
In early 2018, the Government of the Republic of Benin awarded Jan De Nul a design and build contract to protect a 5-kilometre-long stretch of coastline near the town of Avlékété. The project fits into the government’s plan to turn the local coastal zone, which includes a lagoon, sandspit and beaches, into tourist hotspots. Yet the persistent oceanic swell and chronic erosion required an intervention. This is the perfect starting point for a nature- based structure that offers multiple ecosystem services. Its long-term effectiveness, however, hinges on the support of its end users. Stakeholder engagement was therefore central to the project.
TALKING HEADS
Lara Muller (Invest International) and Pieter van Eijk (Wetlands International), discuss the role investors and NGOs can play in driving demand for nature-based solutions.
SAND MOTOR PROTECTING COASTAL COMMUNITIES IN TOGO AND BENIN
The coastline of Togo and Benin moves between 1 and, in some places, even 10 metres every year. Land inwards, of course. Climate change is the cause: sea level rise leads to coastal erosion and that poses a direct threat to economic activities and life on the West African coast. “The inhabitants of this region depend primarily on fishing and tourism for their incomes and livelihoods. Thanks to this coastal protection project, they can benefit from the opportunities the beach and coastal environment offer them, now and in the future,” says Boskalis regional manager Pieter Boer.
New paper: Integrating dredging in sustainable development
Based on the Dredging for Sustainable Infrastructure book, IADC publishes a paper on Integrating dredging in sustainable development which is based on the book.