Co-management/Joint management

Kibera is Nairobi's largest slum/informal settlement. Kibera houses about 250,000 people and is the biggest slum in Africa and one of the biggest in the world. The Government owns all the land in this settlement. 10% of people are shack owners and many of these people own many other shacks and let them out to tenants. The remaining 90% of residents are tenants with no rights. Most of the inhabitants confront themselves with a food crisis. The project at Kibera is a recent initiative of the National Youth Service (NYS), a government agency that promotes youth affairs through the ministry of devolution and planning. The approach is seen as a cheap and healthy solution to food insecurity and runaway unemployment in Nairobi’s slum. The project also addresses climate change as food insecurity is related to an intense period of droughts: longer periods of drought (likely a result of climate change) in sub-Saharan Africa, meant the farmers had to depend on rainfall to water their crops. From a biodiversity point of view, the project will help with the urban biodiversity restoration (1,3)

Park Podnikolie, with an area of about 100 hectares, is part of the water-green frame of the city and is included in the conservation zone of the historical and cultural value of the city of Mogilev [4,11]. Since olden times on the territory of Podnikol, there were up to 400 manor plots, occupied mainly by vegetable gardens. Now Podnikolie is a large park, which has become a favourite place for residents and guests of the regional centre [1]. More than 1125 tree saplings have been planted on the territory of Podnikolie to preserve the integrity of the historical ground, the historical territory [1,9,10,11]. Thus, the park is also called the "green heart" of Mogilev city. The densely planted area is officially a quiet recreation area where people "merge" with nature [1,2,6,10]. The project's goal is to improve the urban management system, promote the implementation of the principles of green urban planning, and improve citizens' quality of life through effective cooperation between local authorities and the population [2,9,10].

Around 90% of Guyana’s population lives in an area that is below sea level, with many inhabiting flood-prone areas along the coast. The coastal plains are also home to about 75% of the country’s economic activities, including almost all of Guyana’s agricultural production. Over the years, degradation and loss of mangrove forests have resulted in increased coastal flooding and saltwater inundation of agricultural land. Mangroves contribute substantially to sea defence in Guyana by damping wave action and reducing wave energy, trapping sediments and stabilizing shoreline substrates while playing an important role in carbon sequestration.
The Guyana Mangrove Restoration Project was executed during 2010-2013 under the National Agricultural Research & Extension Institute. Following completion of the Project phase and given the importance of mangroves to Guyana’s coastal defences, mangrove restoration and management were integrated into NAREI (the National Agricultural Research and Extension Institute), a national institution that promotes climate-smart agriculture and resilient citizens. (1,2)

In 2019, in the city of Ulan-Ude, the most comprehensive and large-scale action "Green City" was launched [2,3,4,5,12], with the goal of creating an efficient and sustainable greening system in Ulan-Ude [1,7]. Nowadays, according to the city's norms, there are two times fewer green spaces per resident than is customary [7]. According to this program, by 2024, the provision of the population with public green spaces should be 10 sq. m per person [1,8]. Within the framework of the project, effective technologies for greening are already being introduced, and all green spaces growing in the city are being monitored [3,5,6]. Planting of green spaces is carried out under the guidance of the Scientific and Technical Council for the Integrated Greening of the City, which includes Buryat scientists and specialists from the City Administration [2].

The Jerusalem Forest is located southwest of Jerusalem and is the green lung of the residents of Israel's capital. The forest has a variety of trees, flowers and wildlife, remains of ancient farming implements and burial caves (2). The forest was planted in the 1950s in an attempt to increase the green cover and natural biodiversity of the area. However, due to intensive urban development including road constructions and energy grid installation and forest fires the size of the forest has been shrinking once covering 4 700 000 m2 to the current size of 1 250 000m2. In 2016, a non-governmental green organisation initiated the renewing of the Jerusalem Forest with the aim to preserve the forest, halt its decrease, secure its sustainable maintenance while involving the public in the conservation efforts increasing their environmental knowledge about their local habitat and support nature stewardship through the application of a community forest model. (1,2,8)

As a result of a ReefFix Project, an Integrated Coastal Zone Management (ICZM) Coral Reef and Mangrove Restoration and Watershed Management Demonstration programme, the Three Bays Marine Protected Area (MPA) and associated Integrated Coastal Zone Management (ICZM) Plan have been established in Haiti (Refs. 4, 5 and 7). Only the second MPA to be established in the country, the Three Bays MPA includes the bays of Limonade, Caracol and Ft. Liberté (the administrative capital of the Nord-East department of Haiti), as well as the Lagon aux Boeufs. As summarised by Ref. 8, the establishment of the MPA and ICZM "will help protect the mangroves, eel grass beds, reefs and habitats housing important fisheries that are crucial for providing livelihoods to nearby communities. It will also help protect the area from storm surges and provide local communities with ecosystem services such as carbon sequestration, tourism value and more". Additionally, the MPA will afford protection to numerous threatened species, "including sea turtles, whales, manatees and migratory birds" (Ref. 8).

Once empty paved area between the houses on Marat Street in St. Petersburg now has been turned into a cosy green garden [4, 5, 6]. The project was developed by a group of students and initiated by the Green Petersburg Foundation, Plants for Friends, "Vladimirsky" Municipal District and others [1, 3, 4, 5]. The square landscaping project contributes to the city's adaption to climate change, a need to increase urban green zones, reducing excessive heat and rainfall levels, and the creation of habitat for birds, among others [3]. The square acquired the concept of a harmonious combination of natural motives and the mood of the Russian landscape [4].

St Inez creek was an ecologically functional tidal waterbody in Panaji, Goa. Panaji has been identified as one of the most vulnerable coastal cities from floods due to the predicted sea-level rise. St Inez creek is one of the very important freshwater bodies in the city because of its cultural, social and biodiversity value. Recently, the ecological functionality of the creek was severely compromised through a combination of natural degradation and anthropogenic influences, which includes sedimentation, collapsed embankments, eutrophication, weed growth, pollution, the release of raw sewerage from neighbouring informal settlements and dumping of construction debris. The current intervention is about the restoration of the creek to conserve the urban nature and ecological systems and to increase the resilience of the city. [1, 2]

One of Valdivia's (in South Chile) southern peripheral neighbourhoods reaches the river of Angachilla which in time led to the creation of an urban wetland, a beautiful and large urban nature reserve of the city of Valdivia. The city of Valdivia is inserted in an extensive network of rivers and coastal wetlands, which penetrate the city through estuaries, hualves and meadows. The Angachilla estuary wetland is one of the most important, connecting the southern sector of the city with the Valdivia River estuary.
These urban wetlands provide important ecosystem functions that directly benefit citizens. Since 2007, the residents of Villa Claro de Luna (neighbourhood) together with various social organisations have worked on the recovery of the Angachilla Wetland, a natural space of great ecological and social value located in the city of Valdivia. Actions included carrying out cleaning, restoration and environmental education activities to recover a place that, abandoned and without any protection from the authorities, was converted into a clandestine garbage dump. (1,2,3)

From 1998-2002 Argentina went through an economic depression, which began after the Russian and Brazilian financial crises, caused widespread unemployment, riots, the fall of the government, and a default on the country's foreign debt. Rosario, the third-most populous city in the country, was not a stranger to the crisis' effects as many of its inhabitants were now living under the poverty line. Coupled with this, climate change was heating up the city and making rainfall more erratic, leading to both flooding in Rosario and fires in the nearby river delta. To tackle urban inequality and climate change the Municipality of Rosario developed a program called "Urban Agriculture Program" which aims to give low-income residents access to underutilized and abandoned public and private land to cultivate food. Over the years, the municipality evolved the program into a cornerstone of its inclusive climate action planning. (1)