Blue Pearls for Berlin
Berlin has faced severe water shortages in recent years, with ponds, small lakes, and pools suffering significantly. Many have dried out or disappeared, causing habitats for countless animals and plants to vanish. Urbanization exacerbates the issue, as more areas become sealed, preventing rainwater from replenishing soil and water bodies. Recognizing the urgency, Berlin introduced the Eco-Account, a strategic reserve of areas and initiatives to mitigate the effects of urban development on nature and landscapes. Central to this is the Blue Pearls for Berlin program, focusing on revitalizing small water bodies to restore biodiversity and ecological balance.
The project identified approximately 30 ponds, pools, lakes, and ditches from over 100 candidates to be transformed into "blue pearls." These revitalized areas will support local ecosystems and improve Berlin’s water cycle. The Berlin Rainwater Agency, alongside departments responsible for nature, climate protection, and water management, is spearheading the initiative in collaboration with the Berlin Nature Conservation Foundation.
Two pilot sites—the Schleipfuhl/Feldweiher water complex in Marzahn-Hellersdorf and the Lankegrabenteich in Steglitz-Zehlendorf—were prioritized for restoration in 2024. These efforts include improving water quality and creating diverse habitats for wildlife. Enhancing small water bodies not only provides a refuge for animals and plants but also contributes to climate adaptation. Restored ponds and lakes can cool surrounding areas and improve the urban microclimate by utilizing locally accumulated rainwater. Blue Pearls for Berlin, approved by the Senate in 2022, aligns with the city’s Eco-Account framework, ensuring that these restored blue spaces offset ecological damage caused by infrastructure and urban projects. The initiative offers Berliners new ways to experience nature, fostering a balance between development and environmental preservation. (Ref. 1, 2, 4, 6, 7)
The project identified approximately 30 ponds, pools, lakes, and ditches from over 100 candidates to be transformed into "blue pearls." These revitalized areas will support local ecosystems and improve Berlin’s water cycle. The Berlin Rainwater Agency, alongside departments responsible for nature, climate protection, and water management, is spearheading the initiative in collaboration with the Berlin Nature Conservation Foundation.
Two pilot sites—the Schleipfuhl/Feldweiher water complex in Marzahn-Hellersdorf and the Lankegrabenteich in Steglitz-Zehlendorf—were prioritized for restoration in 2024. These efforts include improving water quality and creating diverse habitats for wildlife. Enhancing small water bodies not only provides a refuge for animals and plants but also contributes to climate adaptation. Restored ponds and lakes can cool surrounding areas and improve the urban microclimate by utilizing locally accumulated rainwater. Blue Pearls for Berlin, approved by the Senate in 2022, aligns with the city’s Eco-Account framework, ensuring that these restored blue spaces offset ecological damage caused by infrastructure and urban projects. The initiative offers Berliners new ways to experience nature, fostering a balance between development and environmental preservation. (Ref. 1, 2, 4, 6, 7)
Mangrove Protection Project for Etang Z’Abricots Marina
Trade winds from the east over the Bay of Fort-de-France increase agitation at the "Étang Z’Abricots" marina, reducing user comfort and raising maintenance costs for port equipment and vessels. Climate change worsen these problems, increasing the risks of coastline erosion, extreme weather events, and rising sea levels, which may diminish the protective effect of "Pointe des Sables," leaving the marina more exposed to the winds (Ref 1; 2).
The Z’AB project aims to address these challenges by creating a protective barrier for the port by using mangroves. This involves installing lightweight, reversible devices to elevate the sea floor and accumulate sediments, encouraging the natural colonization of mangroves south of Pointe des Sables. Natural colonization refers to the growth of mangroves through processes like seed dispersal and sediment buildup. Once established, the mangrove will act as a natural buffer, protecting the marina from rough seas and adapting to rising sea levels. The project also includes educational efforts to raise awareness about the importance of mangroves for the region’s environmental issues and biodiversity (Ref 1).
Although the Z’AB project has been in planning since 2018, in 2021, a separate project to extend the marina, costing 7 million euros, was approved by the water park authorities (Ref 5). The extension will add 77 new vessel spaces (Ref 7), but it threatens portions of the mangrove and a strictly protected coral species, Oculina Diffusa, found in the area (Ref 6, p.17). While the marina extension project aims to offset the loss of coral and mangrove with various solutions, "Projet Z'AB" is not explicitly mentioned as a compensation mechanism (Ref 6, p.24). However, stakeholders involved in Projet Z'AB are also participating in the development of the marina extension (Ref 6). It remains unclear to what extent Projet Z'AB will be used to mitigate the environmental impact of the extension.
The Z’AB project aims to address these challenges by creating a protective barrier for the port by using mangroves. This involves installing lightweight, reversible devices to elevate the sea floor and accumulate sediments, encouraging the natural colonization of mangroves south of Pointe des Sables. Natural colonization refers to the growth of mangroves through processes like seed dispersal and sediment buildup. Once established, the mangrove will act as a natural buffer, protecting the marina from rough seas and adapting to rising sea levels. The project also includes educational efforts to raise awareness about the importance of mangroves for the region’s environmental issues and biodiversity (Ref 1).
Although the Z’AB project has been in planning since 2018, in 2021, a separate project to extend the marina, costing 7 million euros, was approved by the water park authorities (Ref 5). The extension will add 77 new vessel spaces (Ref 7), but it threatens portions of the mangrove and a strictly protected coral species, Oculina Diffusa, found in the area (Ref 6, p.17). While the marina extension project aims to offset the loss of coral and mangrove with various solutions, "Projet Z'AB" is not explicitly mentioned as a compensation mechanism (Ref 6, p.24). However, stakeholders involved in Projet Z'AB are also participating in the development of the marina extension (Ref 6). It remains unclear to what extent Projet Z'AB will be used to mitigate the environmental impact of the extension.
Grangegorman Community Garden
The Grangegorman Community Garden is a collaborative project involving several stakeholders in restoring a neglected space within the TU Dublin campus and transforming it into a community garden. The project emerged from a partnership between academic and service departments of the university, a primary school, a land development agency, a multinational organization, and a property estate agent.
The project's ultimate goal is to establish a permanent community garden with strong investment, ensuring ongoing support for current users and welcoming a new, diverse group of participants. (1,6)
Launched at the start of 2024, the project focuses on rejuvenating the space, with restoration efforts continuing until December 2024. The garden features four allotment-style beds separated by gravel paths and is surrounded by 12 foliage beds (Ref 1). The initiative aims to provide educational opportunities centered on sustainability and horticulture, while also developing a sustainable, collaborative governance framework for the garden (Ref 6). It aligns with various national, local, and inter-organizational frameworks, strategies, and plans related to community engagement, biodiversity, and climate action (Ref 1).
The project's ultimate goal is to establish a permanent community garden with strong investment, ensuring ongoing support for current users and welcoming a new, diverse group of participants. (1,6)
Launched at the start of 2024, the project focuses on rejuvenating the space, with restoration efforts continuing until December 2024. The garden features four allotment-style beds separated by gravel paths and is surrounded by 12 foliage beds (Ref 1). The initiative aims to provide educational opportunities centered on sustainability and horticulture, while also developing a sustainable, collaborative governance framework for the garden (Ref 6). It aligns with various national, local, and inter-organizational frameworks, strategies, and plans related to community engagement, biodiversity, and climate action (Ref 1).
Constructed wetland for Balili River
Balili River, situated in the province of Benguet, is among the many urban rivers in the Philippines that suffer from severe pollution due to various human activities. Indiscriminate dumping of waste in almost all of its 23 tributaries is a significant contributor to the pollution. Despite this, the river remains a critical source of irrigation for farmers in La Trinidad who primarily grow strawberry and salad crops in the valley. However, the use of contaminated water from the river poses a direct threat to the food safety of consumers of these crops. Moreover, during the summer, the black water of the Balili River is a constant eyesore in the community. To address these environmental concerns, a pilot study was conducted aimed at exploring treatment options for the polluted water in Balili River. The study focused on assessing the use of local plants to restore biodiversity, conserve wildlife habitats, and test the phytoremediation potential of local macrophytes. The pilot area was established within the Organic Farm of Benguet State University near the main stream of the Balili river. The study set up two types of constructed wetlands (CW), a surface flow CW for floating plants and a horizontal subsurface flow CW for emergent plants. The results of the pilot study suggest that constructed wetlands could be an effective solution for cleaning up the Balili River. The implementation of constructed wetlands in Balili River can not only improve the water quality but also benefit the local community and ecosystem. [1,2]
Ecosystem-based adaptation planning in Osh
Ecosystem-based adaptation planning in Osh will support the Government of the Kyrgyz Republic in establishing its National Adaptation Plan (NAP) process and is consistent with the government’s strategic vision for climate change adaptation. Additionally, this project also contributes to the Green Climate Fund (GCF) and UNDP’s objectives by increasing resilience for the most vulnerable people, communities, and regions, by strengthening institutional and regulatory systems for climate-responsive planning and development, and by strengthening adaptive capacity and reducing exposure to climate risks. The priority sectors for the project are: (1) disaster and emergency management; (2) health; (3) biodiversity conservation; (4) and agriculture and irrigation water. The relevant agencies and stakeholders of these four sectors will be key to ensuring these plans catalyse investments to enhance adaptive capacity in the city. [1, 2]
Building Climate Change Resilience
Battambang is projected to experience significant effects of climate change that will have a range of impacts including changes to hydrology and the frequency and intensity of flooding and droughts. As part of an Asian Development Bank project, a technical Climate Change Core Group was established to ensure that representatives from key sectors and levels of government work together to build resilience for the town and prepare the residents for the inevitable climate change impacts in the future. Three infrastructure systems in Battambang were identified for detailed vulnerability assessments and adaptation planning by the climate change Core Group; a) a long canal system to the west of the town, b) the riverbanks near the Sor Kheng Bridge in the centre of town, c) the train station and surrounding wetlands and settlements in the centre of town. [1, 2]
Green Your Laneway Program (GYL)
The City of Melbourne, through its Urban Forest Strategy, has a comprehensive plan for greening major streets and precincts, but not the smaller laneways. Across the municipality, laneways occupy a ground area of 60 hectares, with a further 150 hectares of space on the walls in these laneways (3). "The City of Melbourne has established the GYL program in 2016 with the vision to help transform the city’s smaller laneways into leafy, green and better usable spaces for the residents and other visitors to enjoy while addressing the city’s sustainability challenges." (1 p27). So far, a pilot project has been carried our including the transformation of 4 laneways: Coromandel Place, Guildford Lane, Meyers Place and Katherine Place (1,3). The intervention included an intensive planning process with the involvement of stakeholders from the private and public sectors and the creation of an interactive map of laneways ideal for greening. (1,2). The GYL program aims to address the issues of urban heat islands, climate change impacts of flood mitigation while also improving local aesthetics, amenity and creating opportunities for recreation (1).
Vegetable and plant production on industrial wastelands
The acronym VERDIR stands for Sustainable Rehabilitation and Responsible Innovation (Valorisation de l’Environnement par la Réhabilitation Durable et l’Innovation Responsable) and is a project of the University of Liège, about the development of local economic activities based on urban and peri-urban agriculture. It aims to convert existing brownfield sites according to the needs of the population. This involves the large-scale production of vegetables and plants which can be used for food but also for the pharmaceutical industry and the production of biomass, which is increasingly needed (Ref. 1).
Orteto river park
The project regards the creation of a natural park close to the Orteto river, which crosses the city of Palermo. The problems of the area mainly concern the housing development, which was increasing during the years without considering the potential negative environmental impact. The creation of the park is expected to be a solution to face the challenges created by the unsustainable development of the area. It would be an opportunity to regenerate an area where intervention is needed, providing additional ecosystem services such as coastal protection, and improving air quality. (Ref.1.)
