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Two of Sheffield's rivers, the Limb Brook and the Porter Brook, have been identified as having strong populations of native white-clawed crayfish. The native crayfish is under pressure from the alien, invasive American signal crayfish and the crayfish plague. If no action is taken, the white-clawed crayfish populations in Sheffield could become extinct in a few years. Crayfish Action Sheffield aims to maintain and increase Sheffield’s native crayfish populations through habitat enhancement, public education and creation of bio-secure 'Ark' sites. It is a collaborative research project and Sheffield Crayfish Working Group’s members are from a range of conservation organizations. (ref3) The First time Crayfish Action plan was implemented in 2008-14 and after it ended in 2014, again the issue was looked in 2017. (ref 5)

Göteborg is in need to strengthen the conditions for those who today, to a certain extent, rely on food production or farming. Also, the demand for locally produced and non-toxic food is increasing by Swedish consumers. Green Production aims to create opportunities for urban agriculture that is financially viable within and around the city. Green Production will build knowledge and conduct research by bringing together key stakeholders around a number of focus-projects within the area. Green Production aims to create opportunities for urban agriculture that is financially viable within and around the city. Green Production will build knowledge and conduct research by bringing together key stakeholders around a number of focus-projects within the area. The original idea regarding these focus-projects is that they either will be based in a specific spot and, for example, linking new technologies with new jobs, or involve a process where entrepreneurs meet landowners, consumers, wholesalers, etc. The goal of these focus-projects, in addition, to gather knowledge and create new contacts and networks, is that they may develop a number of innovative urban agriculture projects and business ideas in and around the city. (Ref. 1, 3, 4)

The action proposed by the Municipal Technical Service of Parks and Gardens at the Department of the Environment, aims at the regeneration of the forest with the repopulation of pines of different ages, to imitate a mountain in a natural state with the plantation of the Cartagena Cypress and Tetraclinex articulata, which has a good adaptation to the environment. Several plots (Plots 3, 5, 6, 8 and 12 of the project) have been repopulated with shrubs and trees such as cypress, esparto, rosemary, tomillos, lentiscos, tetraclinex and palmito, in the solana area, deciduous and riparian species, and to other silvicultural treatments, which increases the variety of existing vegetation. (Ref. 1) In addition, the project contemplates the construction of two viewpoints (Ref 1, 3). A new irrigation system is put in place for the re-use of water for sustainable use and water savings. (Ref. 7)

The recreational and educational centre (RIC) area along the Sava river stretches from Tomačevo to Sneberje and totals 144,618 sqm. The area is intended for children, people with disabilities and other residents of the region, visitors and tourists. The intervention made this once degraded, illegal dumping area attractive for those seeking recreation, visitors and tourists, also in the evening as street lighting was installed along the path powered by photovoltaics. A large children's playground offers free socializing and children can develop their basic motor skills, which is exceptionally important in life's early years. (1)

"After decades of abandonment and deterioration, Zaragoza took advantage of the opportunity of the Expo 2008, to form a new relationship with the Ebro River, transforming empty, inaccessible, degraded and unsafe banks into places of encounter and representation. Public works on the Ebro were designed as structures with various functions." (Ref.3)

Since 2012, Gothenburg has worked with the Rivercity, an urban development project in the city centre, that uses different ways of working, with innovation at the core of its urban transformations projects. Frihamnen is one of the RiverCity Göteborg most vital projects which aims to unify the centre of Göteborg across the river and out towards Kvillebäcken, Lindholmen and Backaplan (districts). The environmental goal is to create climate adaptation by flood control & stormwater management. Additional benefits of the project are to make the area more attractive and create recreational areas. As part of the BEGIN project, the Frihamnen project aims to use 'blue-green' solutions (i.e. Blue Green Infrastructure through Social Innovation). (Ref. 1, 2)

With the "Green River" for Milan, the design team coordinated by Stefano Boeri has proposed an urban reforestation project that aims to realise on 90% of the seven abandoned railways a continuous system of parks, woods, oases, orchards and gardens for public use, linked between them by green corridors and bicycles made on the railroad tracks. (1, 3 and 4).

This project focuses on the development of environmental regulations stimulating the connection of existing green areas and developing new ones in the urban area of Rome to stimulate biodiversity by rehabilitating 73% of free/derelict areas. This was done to guarantee an integrated protection of already existing areas as well as restoration of green and blue landscapes (1). The Ecologic Network is still ongoing and provides specific limitations to any new infrastructural project to make sure specific environmental standards are respected (3).

Since 2007, in the area of a former tree nursery, the international garden in Bonn gives space for social integration. Covering 3,000 m2 the area was turned into an allotment garden with garden plots of approximately 40 m2. The plots are allocated to 25 families from different cultural backgrounds, living in the deprived neighbourhood of Bonn-Dransdorf to support their self-sufficient agricultural practices and foster their social integration (1,10). The aim of the project is to provide gardening families with the option for intercultural exchange and a chance to take roots in a new country. In 2003, the International Garden Bonn project was initiated is implemented by "Wissenschaftsladen Bonn", a community service group who persuaded the city of Bonn to provide the once city property free for this social inclusion project (1).

To promote bee-keeping, the city created the Bee Trail - a circuit where visitors can discover Ljubljana's beekeeping heritage and the significance of bees for our survival. The Bee Trail was designed and opened in 2015 as one of the activities within the Green Capital of Europe 2016 project. It was originally conceived only as an actual route between individual locations related to beekeeping and bees in Ljubljana. Through the participatory principle of working with individual members, however, it has been shown that the path is much more than just a work program or project. It has become synonymous with all activities related to bees and beekeeping in Ljubljana. Since 2011, the Slovenian Beekeepers' Association has awarded municipalities the title of the most bee-friendly municipality. The City of Ljubljana has been awarded the most bee-friendly municipality - in 2017 and 2019. (1)