Featured Research

How can minor, unauthorised coastal alterations accumulate over decades and substantially transform a protected and extensively monitored coast? 

We analysed nearly five decades of shoreline and land-use change across eight independent campgrounds located along the Natura 2000-protected coast of Puck Lagoon, Poland. The results reveal the cumulative effects of numerous small, informal interventions: reedbed coverage declined from 95% to 9%; approximately 7.9 ha of new land were reclaimed; the shoreline advanced locally by up to 60 m; campground expansion continued despite formal spatial plans, environmental protection and extensive monitoring data. 

The study identifies a governance paradox: monitoring systems and legal protection were formally in place, yet the available evidence was not translated into timely intervention or effective enforcement. We also propose a six-stage model of tourism-driven coastal transformation, showing how incremental vegetation removal, beach creation and sediment infilling can gradually convert protected lagoon habitats into commercially usable land. 

The broader message is clear: monitoring alone is not enough. Spatial data must be connected to clear institutional responsibilities, context-sensitive thresholds for intervention and effective enforcement. 

Keywords: Informal coastal reclamation, Tourism-driven campground expansion, Regulatory loopholes, Enforcement gaps, Governance paradox, Coastal zone management, Protected lagoon systems.

What happens when beach nourishment is used not to combat erosion, but to create wider recreational beaches? We examined two nourishment projects in Puck and Rewa, located along the sheltered, low-energy coast of the Puck Lagoon. Archival remote-sensing data showed that both shore sections had been stable before intervention, with no evidence of erosion hazards requiring coastal protection. The projects were therefore driven primarily by tourism, recreation and local socio-economic expectations.

Post-nourishment monitoring revealed contrasting initial responses. The artificial beach in Puck remained largely unchanged despite two winter seasons and 17 recorded storm surges. In Rewa, the initial profile underwent rapid reshaping: part of the lower beach was eroded, and the sediment accumulated on the nearshore seabed. After this initial adjustment, however, both beaches stabilised and retained substantially widened recreational space. The results demonstrate that nourishment effects may persist for years in exceptionally low-energy environments, where sediment transport is weak.

This stability comes with environmental trade-offs. Nourishment replaced narrow, heterogeneous natural shores – containing vegetation, wrack, driftwood, cobbles and other habitat features – with broad, relatively uniform sandy beaches. Such transformation may reduce habitat diversity, alter ecosystem services and disrupt land-sea ecological connectivity within a Natura 2000 site. 

The study therefore proposes a decision-making framework that combines erosion-risk assessment, ecosystem-service valuation, socio-economic benefits, sediment sourcing, engineering design, stakeholder consultation and long-term monitoring. The principal lesson is that the durability of an artificial beach does not by itself justify its construction: its necessity, environmental costs and public benefits must also be assessed.

Keywords: Artificial beach nourishment, Recreational beaches, Environmental impacts, Integrated coastal zone management, Shoreline stability,  Beach morphodynamics, Sediment budget, Low-energy coasts, Puck Lagoon.