Create and use scientific knowledge for conservation

The “Cities Dare Wilderness” project is part of the overall Hanoverian program of “More Nature in the City”, a new future-oriented approach to green spaces in urban areas. The aim of the project is to bring wilderness back to the city by increasing urban biodiversity, strengthening nature in the city and making it habitable for its inhabitants. For fulfilling these goals, eleven sites were chosen (some parts of the city park Eilenriede, some currently intensively cultivated areas or some derelict small gardens), in which different methods have been tried out, like planting local woody plants, grazing, and the implementation of interpretive trails. The development of the flora and fauna in the new wilderness is now being observed and investigated. The first step in the wilderness was made on a meadow along the course of the Fße in the Badenstedt which was fenced. It was made available for cattle to graze and influence the new growth of shrubs through feeding preferences (Reference 1, 2). The flowering meadows have attracted a variety of species. The rich habitat resulting from the project has attracted songbirds, hedgehogs, butterflies and some of the 67 bee varieties endemic to the state of Saxony (Reference 10).
Campaigns for environmental education are regularly offered in order to involve the population in the process of wilderness development. The series of “Wilderness Concerts” were organized, a “wilderness woodlice” was installed in one of the project areas (Mittlefield), and handicraft activities have been regularly offered, in addition to excursions and guided tours (Reference 8). Citizen science is also part of the project through the iNaturalist app that allows the community to record observations of the flora and fauna in the area (Reference 9).
The project is financed by the Federal Ministry for the Environment, Natura Conservation and Nuclear Society. Two other cities, Frankfurt am Main and Dessau-Roßlau is also involved as model cities. (Reference 1,2)

Kronsberg was built as a model district of sustainable urban development for the EXPO 2000, which motto was 'Humankind-Nature-Technology'. In the previously intensively farmed area, 3200 new dwelling unit was built. Among other sustainable technologies, the planners of the district developed a quasi-natural drainage system that aimed to provide the municipalities a sustainable alternative for traditional drainage (Reference 1, 2).

20 years after planning started in 1992, EXPO district of Kronsberg has proven its viability in terms of sustainable urban development and provided important foundations for advanced urban planning of new buildings in Hannover and elsewhere. The project was showcased in the ‘Crystal’ exhibition pavilion in London as a global standard for integrated construction. The ‘World Cities Summit 2012’ in Singapore also paid tribute to the residential area as one of the world’s hundred most innovative infrastructure projects (Reference 1, 2013).

The Pasteur clinic in Toulouse installed a 500m² vegetable garden on the roof of its building in 2014. Maintained by clinic employees and various associations, the garden makes it possible to develop a friendly atmosphere and learn gardening while promoting biodiversity (Ref. 2). The garden grows produce including green beans, tomatoes, basil, strawberries and raspberries, (Ref. 3) and contains flowers such as nasturtiums, Cosmos, tagettes and edible chrysanthemums (Ref. 4).

In 2016 the Environmental Protection Division of Hannover's Department of Environment and Urban Environment started a common pilot project, KlimaWohL, with Bothfelder Kamp GmbH & Co. KG and the Gundlach Group. The building project in Hanover-Bothfeld, formerly called “Hilligenwöhren”, was renamed to “Herzkamp”. By 2021, the family company Gundlach will build approx. 300 terraced houses, rental and freehold apartments. The aim of the project is to implement a new residential area where the researchers of KlimaWohL can systematically test the climate adaptation strategy of Hanover. The new residential area that aims to be an innovative example of climate-adaption for other cities will be equipped with extensive green surfaces and will pay attention to protect the natural environment and species. (Reference 1, 3). In 2018, planting the edge of the forest was started, wherein a tiered 20m wide border consisting of shrubs and trees were planted between the forest and the residential area. Construction of the rental apartments was started and by 2019, the row houses and semi-detached houses have started to be sold. The shell has been completed and the interior work has started. By 2022, overall completion of the project is foreseen.

Allotment gardens have a long tradition in Hannover, with approximately 20.000 gardens stretching around the city as a green belt. In the last decades, some gardens were threatened by disappearance due to investment interests (Reference 1). With the goal to protect these gardens, the city employed a so-called "Kleingartenkonzept" (allotment concept) in 2016 with the help of the association of allotment gardens (Bezirksverband Hannover der Kleingärtner e.V.). The concept aims to keep the number of existing gardens for social and ecological considerations while allowing for new residential investments which is vital for the growing city. (Reference 2).
As part of the concept, extensive inventory examinations were conducted on areas affected by conversion and restructuring, along with the start of implementation of smaller development projects for housing and the creation of replacement gardens in some areas. Because the need for residential spaces has been covered for until the end of 2019, the conversion of allotments for the said land use has been stopped; it will be revisited in 2024. (Reference 2)
To address the problem of future allotment garden losses, gradual elimination of permanent vacancies has started by creating new smaller and more attractive gardens from oversized ones, by improving accessibility and optimizing spaces, and by modernizing allotments (Reference 2).

Numerous developments have been carried out at the National Veterinary School of Toulouse's (ENVT) green campus to make the site more conducive to the maintenance and development of biodiversity as result of the school's "VERT VET" (GREEN VET) club (Ref. 2). The green changes began as a result of the school's 2008 sustainable development policy (Ref. 1). Among its many functions and activities, the policy helped raise awareness, clean ponds, and a well, construct a vegetable garden and make beehives and bird nest boxes in the campus's two classified forests (Ref. 3).

Wildlife in the City is a project led by Nottinghamshire Wildlife Trust, with Nottingham City Council, to promote, protect and celebrate the nature reserves, wildlife sites and green spaces across Nottingham City (ref. 2). Wildlife in the City is a project run by Nottinghamshire Wildlife Trust was originally designed to raise awareness of the value of urban wildlife and to inspire people to get involved with caring for wildlife sites on their doorstep. The project aimed to engage people in their local green spaces and wildlife. Wildlife in the City ran lots of activities and events, volunteering opportunities, training opportunities and more (ref. 1). It began as a three-year project funded by Natural England through Access to Nature, as part of the Big Lottery Fund's Changing Spaces programme. The project worked with local people to undertake vital habitat creation and management works throughout the city. It particularly worked in areas of Nottingham with previously little wildlife activity from the partners. These areas were Bestwood, Bulwell, Aspley/Broxtowe estate, Clifton, The Meadows, and Sneinton (ref. 6). After the funding for the project has ended, its objectives and the partnership between the City Council and Nottinghamshire Wildlife Trust remained and the Trust continues managing many of the Council's wildlife sites and using local volunteers to help out with essential tasks such as scrub management, gardening, litter picks and floral surveys (ref 2).

The project of Nature Oasis Auwiesen is creating new habitats for animals and plants in Stuttgart. The project is one of a total of six “Neckar pearls” that are to be completed by 2022 as part of the Neckar Landscape Park master plan in Stuttgart. In the project with a predominantly ecological focus, grassland in the Neckaraue near the Aubrücke is to be transformed into a near‐natural, ecologically valuable wetland biotope. In the course of straightening the Neckar, the wet and floodplain biotopes that were typical and widespread in the floodplains have been lost. The aim of the project is to restore these habitats for animals and plants, which have become very rare today. A network of marshes, water surfaces, islands, and bushes is to be created in the district of Hofen. On an area previously used as grassland, new habitats will be created for rare animals and plants, which are dependent on water areas. Initially, the planned implementation time was 2016-2022, but now it has been delayed and is expected to start by the end of 2021. (2, 7).

“The Went Water Vole Project, a two year project working with local people and landowners throughout the River Went catchment to secure the future survival for one of the most significant water vole populations in West Yorkshire. Work also involves carry out habitat restoration and creation schemes across the area to link up isolated water vole colonies and encourage the re-population of some of their old ranges.” (Ref. 1)

The Sunderland Greenspace Audit explained the city's green space in detail and set guidelines and standards that will help to ensure that all areas of the city have a range of quality green spaces available to them. Hereby the Sunderland City Council wished to improve the green public spaces to retain existing residents and attract new ones, to enhance the image of the city and for it to be used as a means to attract future investment in the form of new shops and jobs (Ref 1).