Measurements of biophysical aspects of the NBS (e.g. temperature, water flow)

Blackburn Meadows Wastewater Treatment Plant (WWTP) has a mesophilic anaerobic digestion facility, which enables the recycled sludge to be used on neighbouring farmlands as manure. It also enables the generation of renewable energy using combined heat and power units. All the upgrade works were to improve the quality of effluent being discharged into the River Don (ref 3). Sheffield City Council and Yorkshire Water leased an unused part of the former sewage works, to turn into a nature reserve which provides habitat for migrating birds. A water meadow created on vacant land promotes ecological biodiversity and floodwater attenuation (Ref5). In 2013, the works handle a dry weather flow of more than 158,000 cu m of sewage per day, with the treated effluent pumped into the river. It is one of Yorkshire Water’s biggest assets, but with a projected dry weather flow set to hit 368,000 cu m per day by 2025, it is in need of an upgrade (ref 6). The project is fragmented into two phases as the 1st phase was completed in 2013 and the 2nd phase will be completed by 2021 (ref 3).

The University of Sheffield has embraced green roof technology for its benefits to the built environment, and to support Sheffield City Council vision of Sheffield as the UK’s green roof capital. Most buildings the University feature intentionally vegetated green roofs and some existing buildings with suitable structures have been retrofitted with green roofs (ref 1). The first instrumented test plot for the green roof was installed on the Mappin Building roof. In 2009, Jessop West building and the Robert Hadfield – Green Roof Centre Demonstration Site are studied for replicating the model (ref 4).

"The main idea of the project is to join the two parks at the end of the intervention (Pedion Areos and Lofos Likavitou) with a green mass that will flow all along the intervention, bringing back the greenery to an area that used to be a green zone in the outside of the old Athens walls.That green corridor is formed by: (1) the existing trees preserved; (2) the new trees added; (3) a continuous floor all along the project with a pattern that is an abstraction from olive tree branches; (4) The artificial activity/bioclimatic trees they create" (Ref 1).

“An integrated solution for groundwater, rainwater, waste water, streams and ponds creates attractive housing in a new suburb (NyE), with room for exciting architecture. The water cycle plays a key role in urban development in Denmark, and water is one of the ever-present elements in our lives. Århus needs to prevent flooding caused by climate change, avoid polluting our groundwater, and improve the environment in streams and ponds to allow the use of water to create recreational value for the residents. This way, Århus can build a balanced aquatic environment, which will ultimately create a better city.” (Ref. 1)

The establishment of the first stage consisting of 650 homes, day care center and grocery store was initiated in the autumn of 2016 after more than 10 years of planning, and in the summer of 2018, the first residents moved into Nye. More homes are on the way. (Ref 14). In its current form of just over 150 ha, it has a capacity of approx. 15,000-20,000 inhabitants or approx. 10,000 homes at full expansion (Ref 15)

The City Council has passed an ambitious woodland plan designed to protect the municipality's groundwater.By planting woods in vulnerable areas where boreholes have been drilled for drinking water, the use of pesticides or other pollutants in the immediate area can be avoided. Aarhus residents will be ensured clean drinking water in 20 years even though the population is rising.(Ref. 2) New woodlands west of Aarhus will be a magnet for lovers of the open air, and secure clean drinking water for the city's population.(Ref. 1)

The Green Bridge at the D2 motorway in Moravian Svätý Ján (Dúbrava locality) is a project under the Alpine Carpathian Corridor Project (ERDF). The project deals with biodiversity and is focused on building a safe and efficient passage for migrating animals over the D2 motorway connecting Bratislava and Brno (Czech Republic). The mountain ranges of the Alps and the Carpathians, which straddle the border of Austria and Slovakia, are the largest sources of biodiversity in Central Europe. The Corridor’s structure has created a forum for the managers of these regions to share ideas and develop solutions that can be applied within the entire region, instead of only per protected area. To ensure long-term continuity, key stakeholders are party to a Memorandum of Understanding that can contribute to sustainability in their area of responsibility. (1, 5, 6)

This project was implemented on the rooftop of a ten-floor building with a floor space of 1.4 hectares, with the implementation of a green roof of 650m2. The motivation behind this was to study the thermodynamic impact of a green roof in hot Athens. Results concluded that the greenroof significantly affected the thermal performance of the building. Energy savings of 50% were observed for air conditioning on the floor directly below the installation. In addition to the energy-saving benefits, the study also found increased biodiversity in the area. A plethora of birds and beneficial insects were observed on the roof, ranging from robin redbreasts, yellowhammers, yellow tits, coal tits, and sparrows to kestrels hovering high above eyeing up the smaller birds. Other species such as honey bees, tiger swallowtail, monarch butterflies, dragonflies and ladybugs were also seen (Ref 1). The study suggested in improved micro-climate and biodiversity of the constitution square (Ref 1, 6, 7).

"The Lez is a small Mediterranean river 28.5 km long, born from a karstic exurgence whose supply zone extends north of the source, over more than 150 km2. The “Le Lez” site was proposed in February 2001 because of the presence of several species and natural habitats protected at European level. The designated part concerns the upstream course of the Lez river, its riparian forest and associated agricultural environments. Covering an area of ​​144 hectares, the area stretches over 14 km from the Lez sources in Saint-Clément-de-Rivière to the Concorde bridge, in the town of Montpellier" (Ref. 4). Strong economic and demographic development near Le Lez implies urban pressure on peripheral sectors, particularly north of Montpellier where many residential areas are developing. The river became protected thanks to the "Natura 2000 European network" which aims to reconcile human activities and the conservation of biodiversity on the basis of the main principles of sustainable development (Ref. 4).

‘Odla i stan’ aims to spread and develop urban farming in a long-term and sustainable manner with residents, associations, property owners and city administrations. The company also works with educational farming at schools and in Malmö Museums (Malmö Museer). Furthermore, “urban farming is an excellent method for increasing social community while providing self-produced food. ‘Odla i stan’ works to organize and coordinate organic farming in the urban environment.” This is done by only working with organic methods and trying to use only local resources.
(ref. 1, 3)

Larkhill Gardens Lake improvement is a collaborative project between the City Council, the Environment Agency and the local community. It is part of the long-term project, Liverpool Park Lakes Project, whose aim is to tackle many problems faced by shallow park lakes. Larkhill Gardens Lake (4936m2) a circular shaped, steep, vertical hard-banked lake, situated in a small estates garden in the city. Like many lakes, Larkhill Gardens Lake experienced problems linked to structural decline, lack of water, poor water quality, poor habitat quality, loss of management of the user and lack of proactive management by the City Council. The improvement of the lake included changing its structure to create a deep-water fishing area, shallow water area and wetland.
The project was funded by a partnership between Liverpool City Council and the Environment Agency (Reference 1).