Improved prevention or control of invasive alien species

Bangladesh is a country prone to floods and waterlogging, which results in two-thirds of this nation's land being transformed into wetlands each year. As such, much land becomes unavailable and the restricted access to it causes food insecurity as well as severe environmental pressure on the flora, fauna and ecosystems. The impact is even more serious as agriculture is one of the most important contributors to Bangladesh's GDP (1).
To respond to most of the climate challenges and food insecurities, in 2007 the International Union for Conservation of Nature (IUCN) and the humanitarian agency Care International, alongside other partners (including the Bangladeshi government), launched floating gardening (artificial islands, that simply rise and fall with the swelling waters) pilot project in the peri-urban area of the Gopalganj and other close by districts (1,2).
Floating gardens known locally as Baira are an old practice of crop cultivation in the wetlands of Bangladesh, the previous agricultural land, which got destroyed by the floods. The practice consists of piling together a number of dense layers of aquatic weeds like water hyacinth, duckweed, or paddy stubs and letting them decay. Afterwards, they're combined with silt and cow dung and inserted with plant/vegetable seeds left to flourish. On these beds, farmers cultivate fruits and vegetables like turmeric and ginger as well as okra, bitter gourd, snake gourd, spinach, and brinjal. In addition to veggies, rice seedlings can occasionally be raised. As a result, floating gardens are available to everyone, affordable, dependable, and completely in harmony with nature. (2,3) Furthermore, this aquatic farming practice has been shown to be highly effective in tackling the consequences of climatic variability and climate change like prolonged water-logging (3). The intervention has benefited approx. 2,000 families in the district of Gopalganj and it has opened the route for further projects that supported the practice of floating gardens (4).

The Community Garden Project was proposed in 2018 by Samyuktha Kannan (a resident of Chennai City) to the Resident Welfare Association (RWA), which is a non-governmental organization (NGO) of Kasturba Nagar (1,2,3). The RWA uses the community hall of a public park of Kasturba Nagar to host meetings and community events, but the area was surrounded by open dry land and an unmanaged field (1,2). This open area surrounding the community hall was then assigned to develop a community garden of 1500 square feet (1,2,3). This project aimed to serve as a shared garden place to bring along residents of all age groups to enjoy gardening and simultaneously create opportunities to learn and share knowledge through social engagement and reconnect with nature (1,2). Although implemented and completed in 2019, the project still continues to contribute towards sustainability through further development and introduction of eco-friendly elements and activities, as well as the involvement of various stakeholders for support (3,4).

18 km southwest of Karachi City (Sandspit area), the World Wildlife Fund Wetland Center (an NGO subsidiary of the WWF) started a project in 2011 called Nurturing Young Sapling with a grant from the Mangrove for the Future organization. The project aimed to increase the mangrove forest cover near Karachi as to restore the ecosystem and improve the habitat for local and migratory birds, crabs and other fauna. In this way, the project sought to improve biodiversity and therefore the availability of livelihood resources to the local community, as well as to enable ecotourism. It also focused to enhance the awareness of school children on the importance of a mangrove ecosystem and advocating for its sustainable use (1).
The project benefited local fishing communities, school children and their families as well as local and international visitors to the Sandspit area. The project resulted in the mangrove plantation at 4.5 hectares area, the establishment of a mangrove (Avicennia Marina) nursery, the plantation of 5000 mangrove saplings, awareness raising of 200 school children, two-day awareness conference, the celebration of significant environmental days at the Wetland Centre to promote conservation awareness among school children (1, 2, 3).
After the successful completion of the project in 2012, WWF Pakistan has been actively involved in the management and plantation of mangroves in the Sandspit area. Multiple campaigns and awareness-raising programs for coastal protection are conducted by WWF in their Sandspit office with multiple partnerships to plant and educate students and communities about the importance of mangrove trees. (5)

A community gardening pilot project was launched in Lahore by the Institute for Art and Culture (IAC) as a part of its mission and outreach programme to develop sustainable communities. Created in 2020, the project was developed in the Government Girls High School located in the vicinity of IAC in the low-income Sher Shah Colony in Raiwind Road. Various other organisations, including Gardening for All, The Little Arts and Adventure Foundation Pakistan also provided support to the project (1,2,3).

The project aimed to involve 70 students and 10 teachers from grades 7 to 10 via a series of workshops (3, 9) and provide hands-on training to the girls and their teachers (2). A trainer provided information on relevant topics in the workshops and also taught students of ideal and efficient planting practices (6).

The representatives of IAC and Gardening for All selected the ideal space for carrying out the community garden project in the school playground (4). The total area of the community garden is not revealed but proper raised beds were created for students (2). The students participated in the development of the community garden and took care of their dedicated garden beds (3, 6). The representatives of IAC had a keen interest to ensure the long-term continuity of this project by providing appropriate training and involving the schools together with the communities they represent (3).

As part of the Green Pakistan Programme (GPP), the Ministry of Environment of Pakistan initiated a plantation drive on the Margalla Hills, threatened by climate change, droughts, floods and deforestation. Margalla Hills National Park (MHNP) is a national park of Pakistan located in the capital city, Islamabad. It was established in the 1980s with a total area of about 173 square kilometres constituting Margalla Hills, Shakarparian Park, Rawal Lake and the Cultural Complex (2,5). The primary purpose of GPP was to protect the environment and revive forests, as Pakistan is a forest-deficient country having 5.01 per cent of its total area under forest cover. The park is under the supervision of the Islamabad Wildlife Management Board (IWMB) which ensures the management, maintenance and preservation of wildlife and other species in the park vicinity. The campaign was set to take place over 5 years between 2017-2022. Furthermore, as part of the same program, an awareness campaign was started to generate knowledge about plants and make Islamabad green and beautiful. Thousands of people visit the national park daily to enjoy the natural environment and healthy recreational facilities and relax by looking at the serene landscape and natural viewpoints of the city visible from the different trails of the park. (1,2,3,4,5)

The Chulalongkorn University (CU) Centenary Park was created to provide a green space for the city and celebrate Chulalongkorn University’s 100th anniversary. Located in the centre of shopping and commerce, the park is designed as a multi-functional “urban forest”, which serves as an oasis for the residents and visitors of Bangkok, who can spend quality leisure time in a lush and pleasant environment. The park includes constructed wetlands with rain gardens, retention ponds, an underground water drainage system and green roof areas. Opened in 2017, Chulalongkorn Centenary Park is the first critical piece of green infrastructure in Bangkok to mitigate detrimental ecological issues and disaster risk reduction. Unlike other public parks around the city, this one is the first in Thailand to demonstrate how a park can help reduce urban flood risks and help the city confront climate change, all while offering city dwellers a place to reconnect with nature. Designed with various ecological design components, the park reminds the city of ways to live with water rather than fear it. [1, 2, 4]

The Beddagana Wetland Park is located in Sri Jayawardenapura Kotte, Sri Lanka's administrative capital. The wetland park plays an important role in flood regulation and keeping the city cool during periods of extreme heat. The city is located in the Colombo district and the project contributes to the flood management goals of the Metro Colombo Urban Development Project (MCUDP). It demonstrates how a wetland can be preserved while promoting eco-tourism and improved livability in the city. The target area is located within the Sri Jayewardenapura-Kotte municipality and is a part of Parliament Lake. While focusing on the protection of the wetland habitat as a flood-retention area, the project also supports selecting investments aimed at the protection and landscaping of key areas within the target area to improve livability for local people living in and around the area, while providing access to much-needed recreational space. [2, 7]

Monavale Vlei is an important wetland area within the city of Harare, characterised by miombo woodlands that play an important role in the fragile ecosystem of the Manyame catchment basin, the main supplier of water for the city of Harare and its suburbs. Throughout the years, Monavale has been subjected to a number of threats such as construction developments, dumping of waste, fires, illegal farming, invasive plants, informal agricultural practices and loss of biodiversity. To address some of these challenges the local community organized itself into a group - Conservation Society of Monavale (Cosmo) Trust, to protect the area and, with the help of the municipality of Harare and some international bodies, implemented a series of actions designed to protect the wetland and reduce the loss of biodiversity, among many others. In 2009 the NGO was awarded a United Nations Development Programme Global Environment Facility Small Grant. The intervention had 3 objectives: to restore parts of the wetlands, to advocate with the local and international authorities for the legislative protection of the wetlands, and to engage the scientific community in research regarding the wetlands. This enabled Cosmo to restore Monavale vlei to an almost pristine wetland state, and other UN funding has made possible several training and awareness projects for a wide range of audiences. (1,2,3)

Under Sustainable Development Goal 11 (make cities and human settlements inclusive, safe, resilient and sustainable) in 2017 a coalition of stakeholders including the Municipality of Asuncion started the implementation of an initiative focused on improving the quality of life in the Metropolitan Area of Asunción through green infrastructure in a sustainable and resilient city framework. Why Asuncion? Cities and metropolitan areas are fundamental centres of economic growth: they contribute approximately 60% of world GDP. However, they also account for around 70% of global greenhouse gas emissions and more than 60% of resource use. Asuncion makes no distinction - it is a city with a high flow of cars and transportation, irregular flooding (the sewerage system there has already been exceeded for some time), and urban growth. Trying to respond to some of these challenges, the present intervention has been proposed with a duration of 5 years. (1,2)

The wetlands to the east of Kolkata are well known over the world for their multiple uses. The locals are using the naturally occurring wetlands for wastewater fisheries and vegetable farming on garbage substrate & effluent irrigated paddy cultivation. In the process, the wetlands treat the wastewater and have saved the city of Calcutta from constructing and maintaining a wastewater treatment plant. Currently, encroachment has deteriorated the wetland ecosystem significantly. This intervention is about the management of the degraded wetland to recover it the best way possible. The goal of management planning is to „maintain East Kolkata Wetlands in a healthy condition to enable the delivery of its full range of ecosystem services and sustain biological diversity values’. [1, 2, 3]