Increased appreciation for natural spaces

The Barcelona Green Infrastructure and Biodiversity Plan 2020 includes the development of several urban green corridors to increase ecological and social connectivity within the city. The green corridor of Passeig de Sant Joan is one of the first of these corridors implemented. The project consisted of the renovation of the promenade through tree and shrub planting and permeable green pavement installation, creating a green boulevard that benefits pedestrians and extend the urban green spaces, which gave new life to the neighborhood and allowed the expansion of small businesses and tourism (Ref 1).

The Hanging Gardens of Jonfosse is a "nature garden". It is used to be a derelict area, but now the area is leased by the nature protection association Natagora to the SNCB-Holding as an opportunity to preserve the rich biodiversity of the place. Natagora uses the project as a teaching garden and they organize public visits during various events. They use the community's help for maintaining the area. In addition to the management, the gardeners usually meet on Saturday afternoons to maintain the plots (Ref. 1).

In 2014, local residents of the St. Pauli neighbourhood of Hamburg supported by architects decided to reshape the Hilldegarden bunker built during WW II. They managed to convince the owner of the bunker, who currently leases the rooms of the bunker to a nightclub, a music school, an instrument store and a photography studio, to re-create the bunker in a way that pays special attention to ecological and social aspects. (Reference 1-3). ”The new project would see the space continue its mixed-use atmosphere, but topped with a massive public rooftop garden with walking trails.” The 800 sqm garden will use sustainable techniques for its operation, including renewable energies and greywater collection for irrigation and will offer a public garden where residents can engage in urban food production. (Reference 2) In September 2020, the reconstruction of the bunker is still in its early phases. (Ref. 8)

The aim of the project is to restore the near-natural state of the Alster, the neighboring floodplains and side waters and thus support biodiversity, the recreational function of the riversides and promote environmental education (Reference 1). The implementation of the project began in 2012 and is planned to continue until 2021. It’s second phase started in 2018, which focuses on redeveloping the inner-city areas of the Alster. (Reference 8) The developers of the project focus on improving biodiversity and habitats. Recent nature conservation efforts included the installation of bee hotels, installation of gravel depots where fish lay eggs and the building of three fish ladders at the Poppenbüttler, Mellingburger and Wohldorfer locks, so that salmon, sea trout and sticklebacks can migrate there again. (Reference 6) In the future, other biotope structures in the urban river environment are to be improved. The project also provides opportunities for voluntary work and educational field trips for schoolchildren. (Reference 9)

The park, dedicated to the Sicilian judge assassinated by the mafia in the early 90s, was the object of a regeneration project by two associations (with the approval of the municipality). The initiative was practically implemented by kids of several schools in Catania, which were invited to the park with the intention of cleaning the area to make the spot available to new plants and trees. This is not just a natural intervention, it is of great cultural and social value for the importance of the character for the city and region. (Ref.1.)

An old hippodrome will be transformed into a natural urban park. "The Metropole of Rouen has launched this reconversion project of in consultation with residents and associations. It is the Mutabilis group that has been chosen to carry out this transformation, the first work of which will begin in 2017. The project, called "Champ Libre", integrates all the components essential to urban life: a place of discovery, nature and innovative agriculture" (Ref. 6).

Green space created behind Rock Ferry library on unused land. The plot of unused land, owned by the Wirral Council, signed a lease with the 'Grow Sow Well' project to run a volunteering scheme and sessions for the community (particularly aiming to help people with mental health issues). Grow Sow Well worked with residents, schools and community groups, bringing people together to celebrate their area and increase awareness of healthy eating and food production. (Ref. 1, 2) This lease has was transferred to the organisation called the Utopia Project (works with young people and includes horticulture). (Ref. 8)

The first external green wall in the public space in Poland was installed on the surface of a 30 square meters wall of the Infobox building in Gdynia [1,2]. The project serves aesthetic purposes and aims to improve air quality. The wall was composed of the plants suitable for the Polish climate conditions [3].

A botanical garden in a forest was created owing to the cooperation of Gdansk Forest District with the city of Gdynia and the University of Gdansk. It consists of 27 thematic collections, covering ca. 50 ha, and adjacent forest phytocoenoses. The garden is specialized in showcasing trees, shrubs and herbaceous plants of the nemoral and boreal zone, particularly species indigenous for the Pomorze Gdanskie region. The garden protects a collection of species endangered and rare in the region and protected by law, as well as an orchard of old forms of fruit trees and shrubs [1,3].
The initial works have been completed, but greenery planting and further investments in the garden are ongoing. The botanical garden is a long-term undertaking and many plants were planted long before the construction began and the garden will "grow" up to 20 years [5].

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).