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The ReNature Nature-Based Solutions Compendium

The ReNature Nature-based Solutions Compendium and Toolkit contain data on case-studies of nature-based solutions and provide recommendations for choosing the right nature-based solutions based on evidence of their effectiveness.

The ReNature Compendium is open for use by everyone, especially policymakers, designers, planners, and citizens, who want to identify the nature-based solutions that are in place in Malta and the Mediterranean climate.

Use the Search & Filter Box to identify case-studies based on your interests from the ReNature Compendium. The map will show the results of your search whilst a list of relevant projects is provided in the space below the map. Click on the title of the projects for further information.

Use the ReNature Toolkit to identify nature-based solutions to tackle specific societal challenges experienced in your city and to identify co-benefits associated with each nature-based solution type.

We welcome additions and suggestions, and opportunities for scientific and research collaboration, and can be contacted from here.

Nature-based solutions (NBS)


Displaying 17 matching elements

Ecological restoration of Wied Ħesri

Habitat restoration of the valley banks, removal of litter, removal of invasive alien species and planting of indigenous riparian trees and shrubs. A total of nearly 600 shrubs and 3 species were planted within the valley during this restoration project.

Ecological restoration of Wied iċ-Ċawsli

Habitat restoration of the valley banks, removal of litter, removal of invasive alien species and planting of indigenous riparian trees and shrubs. A total of around 400 shrubs and 6 species were planted within the valley during this restoration project.

Ecological restoration of Wied il-Kbir.

Habitat restoration of the valley banks, removal of litter, removal of invasive alien species and planting of indigenous riparian trees and shrubs. A total of 200 shrubs and 4 species were planted within the valley during this restoration project.

Plantar agua- Forestal restoration of Serra do Caldeirao

Rehabilitation of underground aquifers in areas by the planting of native trees and shrubs. The aim is to reverse the degradation of the landscape and ecosystems affected by the fire and to restore their important functions and services, which are fundamental to the environmental balance and well-being of communities. One of the important estimated benefits is the recovery of more and higher quality water for all uses and thousands of users. It is estimated with the mature forest in 2050 that there will be a recovery of 200-250 million liters of water/year, a gain of about 20% in the amount of water that will supply the underground aquifers. The restoration work will involve: - Removing invasive species; - Planting of 50,000 Mediterranean trees and shrubs; - Recovery of riparian galleries; - Monitoring of water, soil and biodiversity.

Rehabilitation of the "Campo Grande" garden southern area

Regeneration of an urban park based on NbS, incorporating biodiversity and renaturing initiatives. Implementation of natural acoustic barriers along the entire perimeter of the garden, which are made by mounds of soil arranged interchangeably between themselves doubling the surface area.

River banks rehabilitation programme

This program for the rehabilitation of beds and riverbanks across the country is expected to cover 5,000 kilometers of water lines over the next few years. The initiative multiplies by five the work carried out after the 2017 fires, which allowed intervention, with natural engineering solutions, in the recovery of almost one thousand kilometers of riparian galleries in 57 municipalities in the Center and North of the Country. Implementing hydraulic passages of dams and pontoons, always using natural-based engineering, besides that many trees have been planted. The intention is not only to renaturalize water courses but to rehabilitate, on its margins, the riparian galleries for which, in an urban context, there is often no space.

Thessaloniki Resilience Strategy

The city develops limited open spaces while at the same time creating spaces for social interaction. It offers solutions such as an augmented green infrastructure (permeable surfaces, rain gardens, and green roofs and walls to manage stormwater and buffer the 'heat island effect) and low-cost solutions such as urban agriculture in inner courtyards, and on private balconies and rooftops. Actions 01: Create a new natural landscape within the built environment: A sidewalk bioswale network to gather stormwater will be set up. This will help with the reduction of heat risks and carbon emissions in the city. It will also afford habitats for urban fauna. The bioswale sidewalk network will contribute towards linking the city's cultural sites, such as the Roman Forum and Eptapirgio Castle. The creation of green routes connecting places of cultural and leisure interest will enhance the spatial quality of the city while augmenting the local sense of identity and the appeal of cultural heritage sites. Cycle lanes may also be included, adding to the network of carbon-free urban transportation routes. Action 02: Install green roofs and green walls on schools and municipal buildings: The bioswale sidewalk network will be augmented by the use of green walls and roofs on several public build

Bird conservation in Lesser Prespa

Preparatory Actions The preparatory actions, form the first and most important phase of the project, as they pave the way for the conservation actions that will follow. The optimal implementation of the conservation interventions requires the prior conduction of specific studies that will set the specifications. Actions: A1. Assessment of wetland vegetation management A2. Guidelines for wetland vegetation management A3. Technical studies for the restoration of function of stream mouths A4. Feasibility study for alternative uses of reed biomass A5. Guidelines for responding to incidences of disease outbreak in pelicans A6. Assessment of habitat vulnerability to climate change to establish “climate change proof” wetland vegetation management. Conservation Actions The conservation actions form the main part of the project and their implementation is based on the directions and specifications that arise from the preparatory actions. They include the management of the wetland vegetation in specific sites which the relevant studies will determine.

Ljubljanica Connects

Restoration of the Ljubljanica River corridor and upgrading of the river’s flow regime: The goal of the project is to enhance the transitivity and connectivity of Natura 2000 sites, by restoring the functionality of the Ljubljanica corridor linking two Natura 2000 sites, i.e. Ljubljansko barge (Ljubljana Marshes) and Sava–Medvode–Kresnice. The project aims will be reached through the removal of fish migration barriers, through the upgrading of the water regime, thus restoring habitats, through upgrading the water infrastructure, water management, and establishment of hydrological monitoring. The earmarked fish species whose habitats are to be ameliorated are Danube salmon (Hucho hucho L.), Danube roach (Rutilus pigus Heckel) and Striped chub (Leuciscus souffia Risso). (University of Ljubljana, 2015). At the outset, the river engineering measures will include the sealing of the weir situated before the railway bridge over the Ljubljanica in Zalog. Thus, during arid conditions, the water level shall not be diminished and the conditions in the oxbows of the Ljubljanica upstream will get better. The fishways at the dam at the Fužine Castle and the sluice gate at the Ambrose Square will be refurbished and repristinated. This will permit the migration of fish, which is now severely

Water LA

Given the city’s environmental challenges, the Water LA program and its collaboratives build pathways to partnerships between agencies, non-government organizations, and the private sector to realise work at all levels. Through a case-study of a parcel-scale water management project in the City of Los Angeles, they explore the social, environmental, and economic impacts of retrofitting residential property into spaces of water capture, conservation, and reuse. These interventions transform parcels into spaces that help heal and improve the urban environment and improve quality of life. To highlight the targeted, small-scale nature of these strategies, they refer to this approach as “urban acupuncture.” Water LA provides a case study of 22 parcel-based retrofits (rain grading/rain gardens, infiltration trenches, permeable paving, parkway retrofits) carried out in LA’s San Fernando Valley. Detailing the program’s successes and hurdles, they aim to provide actionable information for urban stakeholders seeking to implement parcel-scale, nature-based solutions across their cities in a widespread, systematic manner. Over the course of the Water LA programme, the project team was able to amend a number of restrictive building codes, developing a streamlined greywater system permitti

Constructed wetlands system for wastewater treatment in the village of Castelluccio di Norcia

A Contructed wetlands system for wastewater management has been implemented. In the first stage, a French system (with "French " vertical flow reed bed filters - RBF) of purification has been implemented. The second stage consisted of two vertical subsurface flow basins (VF), confluent in two surface flow systems, which will provide the recreational aspects of recreating wetlands with typical aquatic plants of the plateau and will promote the evapotranspiration processes. The effluent is finally reused for groundwater recharge, by an infiltration area connected to a sub-irrigation trench. (IRIDRA, 2021).

Rainwater harvesting at Kerakoll research centre

Rainwater harvesting (reused for irrigation and bioclimatic cooling) and landscaping through the integrated open-water tank (IRIDRA, 2021).

A green wall as an approach in treated grey water reuse at Margarita beach

Reuse of treated grey water for gardening, through the created outdoor green wall at Margarita beach. (IRIDRA, 2021).

Constructed wetland for the treatment of wastewater from the Checchi & Sons winery

A constructed wetlands system for wastewater management has been implemented. In the first stage, a French system (with "French" vertical-flow reed-bed filters - RBF) of purification has been implemented. The second stage consists of four horizontal subsurface flow basins (HF), confluent into the Free Water Surface (FWS) CW. The effluent is finally reused for irrigation. (IRIDRA, 2021).

Combined sewer overflow of Gorla Maggiore (CSO): The "Water Park"

A treatment plant was set up for the treatment of the first flush coming from the CSO device and from an extended retention basin for the accumulation and the slow release in the river of the second flush. It consists of 4 sand filters, vertical beds, and a retention basin. A small flux is permanently diverted from the river to feed a small pool located on the bottom of the extended retention basin, to permit the development of a highly diversified ecosystem that will offer multiple pathways for the removal/control of several pollutants.

Constructed wetlands system and reuse of wastewater treatment in the village of Sarra

Implemented nature-based solutions (NbS) as green infrastructure through CWs with horizontal subsurface flow (HF) and vertical subsurface flow (VF) for wastewater treatment and sustainable drainage systems (SuDS). The plant is composed of: 1. pre-treatment with a mechanical screen (cochlea-type filter); 2. primary treatment with two tanks Imhoff in parallel; 3. secondary treatment using the 1st stage with vertical subsurface flow system (6 tanks in parallel, 1500 m2); 2nd stage (6 tanks in parallel, 3000 m2); each vertical flow system is provided by gravity and takes advantage of the different levels using self-priming siphon; 4. sharpening and accumulation pond for irrigation purposes; 5. CWs systems for the sludge extracted from the Imhoff tanks. (IRIDRA, 2021).

Constructed wetlands system in a Bedouin village in Westbank (Palestine)

Separation, treatment with a constructed wetland, and reuse of greywater from a Bedouin village in Palestine. The treated greywater is reused for irrigation of olive trees and fodder. (IDIRIA, 2021).