Improved governance of green or blue areas

After 3 years of works, in 2020 the city of Gdynia revitalized one of its largest parks with a panoramic view on the rest of the city. Planned activities had included new greenery (suitable for the local climate conditions), rebuilding vegetation, creation of the educational paths, building water playground facilities and a sensory garden, open-air gyms and improved infrastructure for the disabled [1,2,3]. The final project focused on the renovation of the amphitheatre and the drainage system underground. Residents have been enjoying the park since June 2020 [7].

In this neighbourhood, this is the first initiative of this type which have utilized the neglected area for the creation of an open-air dog runway with agility track and a park for the residents. The project seeks to improve the aesthetics of the surroundings by planting greenery in the park and along the track. The wider goal of the initiative is to protect the area from further urban development in favour of more greenery in the city [1].

The Chartreuse Park has been chosen as a pilot site for the EU-funded VALUE project, enabling the City of Liège to finance and pilot a participatory requalification process for the Chartreuse Park. Since the acquisition of the site (about 20 hectares of park and green spaces), the City has taken several steps to recognize the historical and environmental potentialities of the Park and to integrate its values in the operations for the urban development of this old military site (the Fort de la Chartreuse). As a result of broad consultation with citizens, between 2012 and 2014, three circular walkways were created in the park connected to each other, enabling greater access to the park (Ref. 1).

In 2017, under a bigger project, the municipality of Sintra started the work for the rehabilitation of an area that included beaches and rivers, such as the Mata river. The NBS solves a problem of accumulation of water and sludge that was unsolved, through the recovery and cleaning of Ribeira da Mata (small river/brook), planting trees and promotion of an improvement in water quality and sand on the beach.
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This project aimed at the reconstruction of the Lepiku channel that is part of the drainage system, which starts next to the Tallinn Botanic Garden and includes wetlands, detention ponds, ditches and channels and flows into the Pirita river. The aim of the project was to improve the quality of the stormwater that flows into the Pirita river which is a Natura 2000 site and flows into the Baltic Sea. The work included: widening of channel bottom in different segments, creating artificial dykes and rapids and creating suitable conditions for the aquatic plants exhibited in Botanic Garden (ref 1). With the project, 200m of the channel was reconstructed (ref. 5).

In 2016, the project facilitated the revitalization and development of green areas in Dąbie (by an urban part of the Vistula River) to create the Dąbie Park. The park had been a neglected vacant green space with randomly scattered former playground facilities. The initiative involved greenery management and creation (bushes, trees, flower meadows), building new sports facilities (running/cycling paths, a basketball field), new infrastructural solutions (new water drainage system, a viewpoint) and creating a safe and modern space for children in a playground surrounded by large trees which provide shadow. The modernization and revitalization of the park infrastructure and local greenery have made the green riverbank area accessible to the public [1,4,5].

The scheme was designed to manage surface water runoff from a 1 in 30 year event and to always intercept and treat the, often more polluted, first flush of highway runoff (ref. 1). A total of 21 linear rain gardens (total of 148m2) were constructed within the grass verge, allowing for the constraints of access, below-ground services, street furniture and trees. The rain gardens utilise a combination of clean stone aggregate and proprietary units to create void space beneath a planted topsoil layer. They were designed to capture runoff from 5500 m2 of highway from a total surface area of 7100 m2 (ref. 1).

The Villa Turrisi park has been the subject of a regeneration process request, implemented by some associations and citizens in order to protect the park. The goal of this citizen-based initiative is to regenerate the area with the expansion of the urban park, by adding several trees and plants. The main benefits of the project, apart from the cultural and social value of the new area, is the mitigation effect of the park in response to threats such as urban pollution, improvement of air quality, and biodiversity conservation (both plants and animal species). (Ref.1.)

The project regards the creation of a natural park close to the Orteto river, which crosses the city of Palermo. The problems of the area mainly concern the housing development, which was increasing during the years without considering the potential negative environmental impact. The creation of the park is expected to be a solution to face the challenges created by the unsustainable development of the area. It would be an opportunity to regenerate an area where intervention is needed, providing additional ecosystem services such as coastal protection, and improving air quality. (Ref.1.)

After more than one 100 trees were slaughtered in a few months upon order of the city in 2016, the association "Défenses des Arbres en Pays d'Aix" was created by multiple NGOs with the purpose of saving the plant heritage of Aix-en-Provence. Their main goal was to encourage the city's council to establish a "Charter for trees" dedicated to the city of Aix en Provence (Ref. 1). The work of the association was useful as the city decided to engage in a new charter, and prepare a new planting season with 64 trees (in 2016) (Ref. 4). The Charter was developed in 2017 (Ref. 6) and an environmental management plan for activities was developed in 2018 (Ref. 7).