Photo gallery
Summary
In 2010, the Nummela Gateway Wetland Park (2 ha) was built as both a water-quality mitigation landscape and an urban park. Early monitoring (2010–2011 spring floods) and a three-year ecological survey showed rapid self-establishment, rising biodiversity and multiple ecosystem services (erosion/flood control, pollutant reduction), alongside strong recreational and educational use. According to the project managers, EU LIFE+ “Urban Oases” began in 2012; from 2012–2016 the team deployed high-frequency, year-round monitoring and also sampled sub-catchments to separate urban vs. agricultural loads, which guided the construction of an additional upstream wetland (Nummelan Niittu). Peer-reviewed work documents seasonal nutrient-removal dynamics and highlights the creation of endangered clay-stream habitats. Today, municipal pages present both Portti and Niittu as accessible nature sites (trails, bird tower). The municipality also continues periodic lake-water monitoring in Enäjärvi under local programmes. Comparative studies (including Nummela) underscore how vegetation and design influence phosphorus removal performance.
Last update
2025