Wetlands International: Top Biodiversity Nonprofit Evaluation
Summary
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What is Wetlands International?
Wetlands International is a global nonprofit organization working to safeguard and restore wetlands for their environmental value and ecosystem services. It was founded in 1996 through the merger of other wetland nonprofits and is headquartered in the Netherlands.
What does Wetlands International do?
Wetlands International works on (1) implementing site-level wetland conservation and restoration projects, (2) building coalitions for wetlands, (3) creating and valorizing knowledge and tools, (4) engaging in advocacy and technical assistance, and (5) piloting financing mechanisms.
How could Wetlands International help address biodiversity loss?
Wetlands punch far above their weight in terms of biodiversity and ecosystem services. While wetlands cover approximately 10% of the global land surface, up to 40% of the world’s species live and breed in them. Wetlands are disappearing three times faster than forests. We think that Wetlands International’s work to conserve and restore wetlands at scale is important for protecting the ecosystem services they provide and the species that depend on them.
What has Wetlands International accomplished historically?
Wetlands International has played an important role in establishing and maintaining several high-profile initiatives that increase the visibility of and funding for mangrove and freshwater biomes, such as Mangrove Breakthrough, Global Mangrove Watch, and the Freshwater Challenge. It is also a trusted partner for providing technical assistance to governments, such as by helping to improve national or regional wetland management plans. We think Wetlands International can build on its successes with its new Peatland Breakthrough initiative.
Is Wetlands International cost-effective?
We did not conduct a quantitative cost-effectiveness analysis of Wetlands International, because there is no straightforward outcome variable to measure and compare biodiversity benefits. We think that Wetlands International is likely a cost-effective organization because (a) the organization leverages the actions and funding of larger, wealthier, and more powerful actors, and (b) the exclusive focus on wetlands means that its cost-effectiveness is not diluted by work on other biomes that score less favorably on scale, feasibility, and funding need.
Is there room for more funding?
We think Wetlands International could use additional unrestricted funding (at least $1.5 million) to either expand or launch global initiatives, such as the Freshwater Challenge and its new Peatland Breakthrough.1 It can also use unrestricted funding to develop its semi-flexible Wetlands Impact Facility, which is intended to increase the funding available for landscape-scale wetland conservation and restoration.
Are there major co-benefits or potential risks?
We think Wetlands International’s co-benefits and risks are tied to those of wetland conservation and restoration in general. These activities can increase or continue carbon storage and sequestration in the biosphere, reducing global warming. At the same time, some types of freshwater wetland restoration can also lead to short-term methane spikes, temporarily exacerbating short-term warming. While not strictly co-benefits, we think that wetlands offer important ecosystem services, such as disaster risk reduction and water filtration.
What are the key uncertainties and open questions?
Key uncertainties include whether Wetlands International's collaborative initiatives, such as the Mangrove Breakthrough, will reach their intended scale, and the extent to which we should attribute this success to Wetlands International compared to other non-profits also involved in these initiatives.
What is the bottom line and what are the next steps?
We classify Wetlands International as one of our Top Biodiversity Nonprofits. We believe that the organization has made significant contributions to developing effective wetland conservation and restoration practices. Through policy engagements and collaborative initiatives like the Freshwater Challenge, Mangrove Breakthrough, and Global Mangrove Watch, it has increased global attention and funding for wetland conservation. We believe Wetlands International can further expand its efforts within these programs and replicate its successes in other types of wetlands.
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1 €1.3 million EUR, converted to USD on 2025-12-04.
What Is Wetlands International?
Wetlands International is a global nonprofit organization working on the conservation and restoration of wetlands for their environmental value and their ecosystem services.2 Wetlands International was founded in 1996 as a merger between European, Asian, and pan-American organizations working on wetland conservation and restoration, the oldest of which was founded in 1937.3
Wetlands International is headquartered in the Netherlands (its “Global Office”) where it is registered as a Public Benefit Organization.4 The organization has “network offices” in Argentina, Belgium (Europe office), Brazil, Ethiopia, Guinea-Bissau, India, Indonesia, Japan, Kenya, Malaysia, Mali, Panama, the Philippines, Senegal, Sierra Leone, Tanzania, and Uganda.5 The Global Office has a coordinating role and leads non-location-specific work. The network offices are often independent legal entities that share the same strategy and work at the field level, advocating for better local policies.6 Wetlands International also runs an association with the same name; the association has 23 country members and nine nonprofit members that support the organization and collaborate on wetland conservation and restoration.7
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2 There is no universally accepted definition of wetlands. Wetland International works on freshwater and other inland wetlands (rivers, floodplains, lakes, marshes, and inland deltas), peatlands, and coastal wetlands (such as mangroves, saltmarshes, and seagrasses).
3 “Wetlands International and its predecessors have worked to protect wetlands since 1937. [...] Organisations with similar objectives emerged in Asia and the Americas: the Asian Wetland Bureau (AWB) was initiated as INTERWADER in 1983, and Wetlands for the Americas (WA) formed in 1989. These three organisations started to work closely together in 1991. This working relationship evolved into a single global organisation which adopted the name Wetlands International and established its headquarters in the Netherlands in 1996.” Wetlands International, n.d.
4 In Dutch: Algemeen Nut Beogende Instelling (ANBI). Registration number (RSIN) 806703726.
5 List of offices on the website of Wetlands International
6 “We have a network of offices around the world. These, often independent, entities share the same Strategy. We work at the field level to develop and mobilise knowledge, and use this practical experience to advocate for better policies.” Wetlands International, n.d.
7 The list of members is available on the website of Wetlands International.
How Could Wetlands International Address Biodiversity Loss?
Key ideas: Wetlands International’s strategy
- Wetlands are biodiversity powerhouses, covering about 10% of the world’s land yet supporting up to 40% of global species. However, they are being lost three times faster than forests.
- Strategies to reduce agricultural expansion are not enough to protect wetlands, since major drivers of wetland loss include pollution and urban/industrial development and not just agriculture.
- Wetland protection offers a targeted, near-term biodiversity safeguard, steering habitat loss away from high-value ecosystems while longer-term strategies (e.g., alternative proteins, yield improvements) mature.
- Wetlands International advances conservation via on-the-ground restoration; multi-stakeholder coalitions with communities, government, and companies; knowledge generation; policy advocacy; and innovative finance tools. Its global initiatives help enable scalable, locally-grounded impact across key wetland systems.
Conserving and Restoring Wetlands
Wetlands—such as rivers, peatlands, and mangroves—punch above their weight in terms of biodiversity, but their continued existence is under threat. While wetlands account for approximately 10% of the total global land surface, up to 40% of the world’s species live and breed in wetlands.8 The rate of wetland cover loss is three times faster than that of forests and freshwater wildlife populations, which are sustained by wetlands, have shrunk the most out of all three realms of biodiversity.9
For terrestrial biodiversity, our strategy report on reducing biodiversity loss largely focuses on reducing agricultural expansion. We think it is important to complement philanthropic efforts to reduce agricultural expansion with protecting wetlands. Importantly, philanthropic strategies to reduce agricultural expansion (such as plant-rich diets, increasing yields, and reducing food waste) are not a full solution for the wetland biome since these strategies mainly target forests. We think that conserving and restoring wetlands is a promising strategy for protecting biodiversity for three main reasons:
- Agricultural expansion is not the only threat to the wetland biome. Globally, the top three negative drivers of wetland loss and degradation are urban and industrial pollution, industrial development and infrastructure, and urban development and infrastructure.10 This means that reducing agricultural expansion is only expected to have a limited positive impact on wetland conservation.
- Reducing agricultural expansion is not selective as to which ecosystems are saved. Even if we eat fewer land-intensive products like beef or make farming more productive, we still cannot be sure that the land saved would come from areas with high biodiversity, such as wetlands.
- In the short term, we need to steer habitat loss away from the most important ecosystems. We expect that strategies to reduce agricultural expansion, such as alternative proteins and agricultural productivity, are longer-term strategic bets that will take multiple decades to fully materialize. In the meantime, we can protect areas with high biodiversity values that are threatened yet neglected in the conservation sector. We see this as a strategic ‘hedge’ against other biodiversity strategies failing to deliver substantial results quickly, while also tailoring to the preferences of donors who are risk-averse, have shorter timelines for results, and prefer tangible local impacts.
Our strategy report on reducing biodiversity loss explains our argument in favor of conserving and restoring wetlands in more detail.
Wetlands International’s Strategy
Wetlands International uses the following strategies to work on wetland restoration and protection:11
- Implementing site-level conservation and restoration projects: Wetlands International implements site-level wetland conservation and restoration interventions and pilots. The organization involves stakeholders who depend on the ecosystem services provided by wetlands and those who can positively or negatively affect wetland ecosystems, such as Indigenous Peoples, local communities, companies, and governments. Wetlands International works on twelve “flagship landscapes”, which they prioritized as the most important for people, climate change mitigation, adaptation, and biodiversity, such as whether they are on migratory paths for fish and birds (i.e., swimways and flyways).
- Building coalitions for wetlands: Wetlands International creates coalitions of stakeholders that are affected by wetlands, or have an impact on wetlands, to co-create, scale up, and replicate solutions. Wetlands International’s Global Office co-runs three initiatives that aim to unlock finance for wetlands or improve wetland governance as part of national commitments: the Freshwater Challenge, the Mangrove Breakthrough, and the Peatland Breakthrough.
- Creating and valorizing knowledge and tools: Wetlands International creates, collates, and disseminates knowledge about wetland presence, status, values, policies, and plans to enable other actors to work on wetland conservation and restoration more effectively. Wetlands International runs the International Waterbird Census to monitor waterbird abundance in wetlands and their flyways, and co-runs Global Mangrove Watch to provide remote-sensing data to keep track of mangrove cover and quality.
- Engaging in advocacy and technical assistance: Wetlands International advocates for better policies to safeguard and restore wetlands and for removing harmful subsidies in the international, national, and sub-national arenas.
- Piloting financing mechanisms: Wetlands International develops and pilots financing tools, such as biodiversity and carbon credits, nature-related bonds, and payments for ecosystem services, to leverage more sources of funding for wetland conservation.
Our Theory of Change for Wetlands International
We constructed a theory of change that reflects our impression of how Wetlands International’s work can reduce biodiversity loss or restore previous biodiversity, as shown in Figure 1. This theory of change focuses on increasing the quantity of conserved or restored wetlands and improving the efficacy of wetland conservation and restoration work.

Examining the Assumptions Behind the Theory of Change
Below, we discuss and evaluate assumptions related to Wetlands International’s theory of change. For each of the assumptions, we rank whether we have low, medium, or high certainty about the assumption.12 For each assumption, we assess whether the best available evidence, primary or secondary, suggests whether the assumption will plausibly hold.
- Wetland International’s direct site-specific interventions have leverage and trigger a larger impact beyond the project’s borders. (medium certainty)
We are medium certain (70-90%) that Wetlands International’s site-specific interventions will lead to an impact beyond the project’s borders. We think that the strongest argument for positive spillover effects is Wetlands International’s prioritization of major swimways and flyways. By conserving and restoring habitats for migratory birds and fish, local populations of these species can recover or grow, which then affects species’ abundance in other sites along these swimways and flyways.
We also see positive examples of spillover from Wetlands International’s conservation practices to other initiatives, such as Indonesia basing its mangrove restoration policy on the ecological restoration practices piloted by Wetlands International.13
We also note that Wetlands International has indicated that it would use unrestricted funding mainly for initiatives to scale up conservation and restoration, rather than site-specific work. Wetlands International’s site-specific projects are mainly funded via restricted grants from philanthropies and governments, although the organization does plan to use additional unrestricted funding to develop landscape conservation prepositions to unlock more location-specific conservation funding.14 We think that the assumption that Wetlands International’s projects have a geographical spillover is not very relevant for donors considering unrestricted funding. We discuss this consideration in more detail in our section on funding need.
- Governments and non-state actors use Wetlands International’s tools and technical assistance to improve wetland outcomes. (medium certainty)
We are medium certain (70-90%) that governments and non-state actors use Wetlands International’s technical assistance and tools to improve wetland outcomes. The usefulness of its technical assistance is illustrated by achievements such as countries including its targets for freshwater and mangrove conservation in their NDCs and Kenya and Tanzania using Global Mangrove Watch alerts.15 Wetlands International has also been involved in research and policy advocacy in the EU and provided extensive technical assistance in Argentina.16
We do not attach a high certainty level (90%-100%) to this assumption because:
- We can only anecdotally assess the use of Wetlands International’s tools and technical assistance. Because many of Wetlands International’s tools are freely accessible to the public, we cannot have a full understanding of their uptake as their use does not require registration with Wetlands International or other developers. As technical assistance takes place behind the scenes, we also do not know which engagements for technical assistance have failed or which tools were not found useful by key decision-makers. However, we do not see similar tools offered by other organizations, nor many other nonprofits providing technical assistance for wetland conservation and restoration. This gap leads us to believe that a large part of the demand for knowledge and tools will be met by Wetlands International.
- We can only monitor the use of technical assistance and tools at the input and output levels of the theory of change. We cannot ascertain whether Wetlands International counterfactually improved wetland outcomes in the longer term. (See also our comments on permanence below.)
We would revise our assessment if we had quantitative evidence (e.g. a survey) showing that relevant decision-makers know about and want to use Wetlands International’s tools and technical assistance, along with long-term evidence that jurisdictions working with Wetlands International achieve better conservation outcomes.
- The protection and restoration of wetlands is mostly permanent. (low certainty)
We have low certainty (<70%) that Wetlands International’s work to conserve and restore wetlands leads to long-term conservation outcomes. By ‘permanence’, we mean the likelihood that realized biodiversity gains (or averted losses) are maintained reasonably far into the future.17 We emphasize that our ‘low’ rating comes from methodological limitations and not from concerns unique to Wetlands International.
Impermanence risks for wetland conservation and restoration include:
- Changing political landscapes: Decision-makers may put less value on wetlands, their associated ecosystem services, and the communities that depend on them.
- Global economic trends: Emerging sectors can present new or larger competing land uses in wetland ecosystems, such as aquaculture growth affecting coastal wetlands.
- Climate change: Altered rainfall patterns in or near wetlands and can degrade coastal wetlands through sea level rise.
- Conflict: War or other conflicts in countries with wetland ecosystems would negatively affect operations in these countries.
We have a positive impression of Wetlands International’s work to address impermanence risks, insofar as addressing permanence is possible. Wetlands International describes risks to its operations in its annual review and strategies to mitigate these risks.18 We also think Wetlands International's efforts to raise diverse sources of funding for wetlands mitigate risks from reduced funding streams, while its engagements with communities help guard against competing land uses in wetlands.
- Wetland protection and conservation does not cause equivalent biodiversity loss elsewhere (leakage). (medium certainty)
We have medium certainty (70-90%) that conservation and restoration activities do not lead to an equivalent loss of biodiversity elsewhere. Unlike land use change in forests, which is typically caused by agricultural expansion for commodities, the threats to wetlands are more site-specific.19 The Global Wetland Outlook reports that the key negative drivers of wetland loss and degradation are pollution, urban expansion, industrial development, agricultural intensification, drainage, and invasive species.20 We think that addressing these drivers locally often does not provide a strong incentive to shift environmentally damaging activities to another location in the wetland, since many of the activities underlying these threats can also take place outside of wetlands. Since wetlands have above-average species richness and ecosystem services, we think that diverting land use change or other economic drivers of biodiversity loss to other areas will result in less biodiversity loss overall.
We also think that Wetlands International’s approach to conservation and restoration reduces leakage risks. Since Wetlands International’s projects focus on twelve flagship landscapes of particular importance for migratory species, we think that any leakage to wetlands outside these conservation areas will lead to less biodiversity loss because they are less important to flyways and swimways.21 We also think that Wetlands International’s engagement with relevant stakeholders in the wider landscape, such as communities, companies, and government agencies, reduces the economic drivers of wetland deterioration within the landscape and therefore reduces local leakage risks.22
Our impression is that the conservation community is less concerned with leakage in wetland conservation than in forests. Guidance for leakage risks in wetland conservation does not appear to be commonplace. A background note prepared by the government of Iceland in 2008 for the UNFCCC put that impermanence risks “would be low or negligible” if wetland restoration focuses on unproductive agricultural land, as this does not increase demand for agricultural products from wetlands elsewhere.23
- Wetland conservation and restoration improve biodiversity outcomes. (high certainty)
Conservation Evidence, which compiles evidence from scientific literature about the effects of conservation efforts on biodiversity, ranks many relevant wetland conservation and restoration actions as “beneficial” or “likely to be beneficial”. We searched for high-level actions to conserve or restore wetlands on Conservation Evidence and compiled the most relevant actions in Table 1.24

Wetlands International’s Workstreams and Achievements
Key ideas: Wetlands International’s achievements
- Wetlands International has set up innovative conservation projects in priority areas. Its strategy emphasizes working along migratory paths of birds and fish (flyways and swimways) and using conservation knowledge to enable impact beyond the project borders.
- Wetlands International has helped build coalitions to protect specific wetland types. The most prominent coalitions it has helped build are the Freshwater Challenge, Global Mangrove Alliance, the Mangrove Breakthrough, and, more recently, the Peatland Breakthrough. These initiatives have led to increased conservation, restoration, and financing commitments.
- Wetlands International has created knowledge and tools to improve conservation and restoration practices. Some of its most prominent tools are Global Mangrove Watch, the International Waterbird Census, and best practice documents to improve conservation activities.
- Wetlands International contributed to improved wetland policies and management, both itself and through the coalitions it helped launch. The organization works in the international and national policy arenas.
- Wetlands International has piloted financing mechanisms to increase funding for wetland conservation and restoration. The organization is, among other initiatives, experimenting with investable solutions that are attractive for the aquaculture and agriculture sectors, water users, and funders of carbon projects to leverage private funding for conservation and restoration.
Implementing Site-Level Wetland Conservation and Restoration Projects
Wetlands International implements site-level wetland conservation and restoration interventions with Indigenous Peoples and local communities through designating Ramsar sites, establishing protected areas, and implementing other area-based conservation measures, along with its integrated management.25 The organization also introduces best practices and pilots replicable solutions for conservation, restoration, and wise use of landscapes.. Examples of Wetlands International’s site-level work on best practices include enhancing sustainable aquaculture productivity, better grazing management in and near wetlands, piloting paludiculture (wet agriculture) to avoid wetland drainage, and integrating nature into water engineering to avoid the need to replace ecosystems with gray infrastructure. Wetlands International is involved in 26 site-level conservation projects on all continents except Oceania and Antarctica.26 We highlight some examples of projects below.
Examples of Wetlands International’s site-specific work
- Mangrove Restoration: To Plant or not to Plant
Wetlands International aims to restore a minimum of 30,000 hectares of mangroves by helping restoration actors with upscaling best practices in mangrove conservation. According to Wetlands International, the rate of mangrove restoration success ranges from 15% to 20% because of inadequate restoration techniques and failing to take into account the local context. Wetlands International works with conservation NGOs to implement community-based ecological mangrove restoration (CBEMR), which allows mangroves to mostly naturally re-grow by creating suitable ecological and socio-economic conditions. - Scaling science-based mangrove restoration in the Philippines
Wetlands International is promoting the uptake of CBEMR and Associated Mangrove Aquaculture (AMA) in the Philippines as an alternative to mass-planting of mangrove forests, which have often failed. AMA focuses on the co-benefits that mangroves bring for water quality and fish nursery habitats. - Climate-Resilient East Atlantic Flyway (CREAF) programme
Together with partners, Wetlands International launched an initiative to conserve and restore wetland sites along the East Atlantic Flyway, which stretches from the Arctic to Southern Africa along the west coast of Europe and Africa. The program focuses on improving management, monitoring and research, embedding wetland conservation into policies, and empowering communities to lead conservation. - Blue Lifelines for a Secure Sahel (BLiSS)
Together with CARE, International Alert, and the International Water Management Institute, Wetlands International runs the BLiSS project, which co-develops plans for wetland recovery with local partners, supports best practices for wetland solutions, advocates for government support for better wetland management, and facilitates access to finance for wetland restoration.
While wetlands only cover a relatively small share of Earth’s land, we think that directly conserving and restoring all wetlands using philanthropic donations for nonprofits alone will not lead to the largest biodiversity impact. Rather, as we describe in our strategy report on reducing biodiversity loss, we think that the role of philanthropy is to change systems by leveraging policy, creating new markets, accelerating research, or steering larger sources of funding. Wetlands International recognizes that the direct impact of its site-level work will often be limited and accounts for this limitation by aiming to achieve positive impacts beyond project borders. Wetlands International does that by:
- Exploring and scaling new methods: Gaining experience with best practices to scale up proven methods globally.
- Addressing competing claims to land use: Wetlands International aims to address the competing claims on wetlands by agriculture, aquaculture, industry, and cities by working with landscape-relevant stakeholders like governments, companies, financial institutions, knowledge institutes, and communities.
- Prioritizing specific areas: Wetlands International focuses its work on twelve “flagship landscapes” that are most important for people, climate change mitigation and adaptation, and biodiversity, and reach biodiversity benefits beyond the project borders because of its positive effect on swimways and flyways for migratory fish and birds. The flagship landscapes and major flyways are shown in Figure 2.

Building Coalitions for WetlandsWetlands International creates coalitions of stakeholders that are affected by wetlands, or have an impact on wetlands, to co-create, scale up, and replicate solutions for wetlands. We summarize these initiatives in Table 2. A detailed description of these coalitions with references is available in Appendix A.


Creating and Valorizing Knowledge and Tools
Wetlands International creates, collates, and disseminates knowledge about wetland presence, status, values, policies, and plans to enable other actors to work on wetland conservation and restoration more effectively.
One of Wetlands International’s largest tools is the Global Mangrove Watch (GMW), which it launched in 2020 with other nonprofits in the Global Mangrove Alliance. GMW is an online monitoring tool providing real-time synthesized remote sensing data on changes to mangrove cover (Figure 3).27 GMW includes information on cover change, soil carbon, living biomass, and canopy height, among other things, to governments and conservation actors to respond to illegal logging, track conservation progress, and identify causes of mangrove loss.28 GMA issues disturbance alerts when mangrove cover is affected by human or natural factors.29
While it is hard to track the impacts of knowledge-based work, GMW has demonstrated anecdotal successes. For example, GMW has helped conservation staff in Kenya and Tanzania detect mangrove losses earlier through its deforestation alerts, and helped enable targeted restoration activities.30 Its data has also informed the United Nations Environment Programme’s (UNEP) report on mangrove forest change.31

Wetlands International is currently working on a Wetland Atlas initiative inspired by GMW to provide similar data on other wetland types, including freshwater wetlands and peatlands.32 It is also a member of the EU-funded WET HORIZONS project, which launched the European Wetland Map showing the locations of major peatland locations and drainage data.33 Given Wetlands International’s expertise in peatlands and its experience with launching GMW, we think that the organization is well-positioned to build knowledge and tools for more evidence-based peatland conservation.
Other data and knowledge work by Wetlands International includes:
- The International Waterbird Census (IWC), a monitoring program in 143 countries to collect information on waterbird abundance in major wetland sites and flyways.
- Best practice guidelines for restoring, creating, and managing salt marshes and tidal flats, in collaboration with the Conservation Evidence initiative.34 These guidelines are confirmed to be used in two sites on the Yellow Sea coast in China.35
- Best practice guidelines for mangrove restoration to align restoration actors based on scientific and local knowledge about what works well in restoration.
- An inventory of the “Swimways of European Importance”, mapping the migration routes of freshwater fish species, which informed the EU Nature Restoration Law.36
Engaging in Advocacy and Technical Assistance
Wetlands International advocates for policies protecting wetlands at the global, national, and sub-national level. Because wetland policies are not extensively tracked by the media, we mainly rely on Wetlands International’s own reporting to assess the organization’s track record for influencing policy.
International Arena
Wetlands International works to include wetlands in global frameworks for biodiversity (CBD), climate change (UNFCCC), and desertification (United Nations Convention to Combat Desertification, UNCCD) through its coalitions like the Mangrove Breakthrough and the Freshwater Challenge. Wetlands International is a voting member of the IUCN World Conservation Congress, where it advocates for the inclusion of wetlands in the agenda of the conservation community. In 2025, it co-sponsored five motions at the congress, which passed.37 The organization is one of six partners of the Ramsar Convention, an international treaty for the conservation and "wise use" of wetlands.38
European Union
In recent years, Wetlands International helped secure the inclusion of wetlands in several relevant policy initiatives of the European Union:
- Nature Restoration Regulation: Wetlands International’s mapping of Swimways of European Importance helped ensure this regulation included river restoration targets.39 The organization also helped ensure that this law included a mandatory target for peatland restoration.40
- EU guidance on carbon certification: Wetlands International helped enable payments for ecosystem services for peatland management.41
In addition, Wetlands International promotes “Wetlands Partnerships” between the EU and other countries, based on the existence of Forest Partnerships. There are currently conversations for wetland partnerships between the EU, Brazil, and Colombia.42
National and sub-national arenas
Wetlands International claims several major recent policy wins with national governments:
- Influencing the Indonesian government’s commitment to restore 600,000 hectares of degraded mangroves based on Wetlands International’s pilots for ecological mangrove restoration with a high survival rate.43
- Strengthening the protection of mangrove sites in Tanzania (~600,000 hectares), Liberia and Sierra Leone, Kenya, and Panama. Wetlands International also assisted national-level conservation efforts in Indonesia, the Philippines, Guinea-Bissau, and Senegal. In the latter country, its parliament endorsed a new mangrove conservation and restoration strategy.44
- Providing technical assistance to protect and manage peatlands in Argentina, Panama, and Uganda. According to Wetlands International, its site-specific technical assistance in these countries improved the management plans of over 1 million hectares of wetlands.45
Piloting Financing Mechanisms
Wetlands International develops and pilots financing mechanisms to leverage more sources of funding for wetland conservation. Since these are pilot programs, we did not evaluate whether these initiatives are scaling up, but rather think they are illustrative of Wetlands International exploring ways to increase funding for wetland conservation from the private sector. We give several examples of the organization’s pilot programs below.
Examples of Wetlands International’s pilots of financing mechanisms
- Mixed mangrove aquaculture solutions: Wetlands International developed solutions for mixing mangroves with aquaculture, where the ecosystem services from mangroves (such as water filtration) help improve mangroves. This pilot is intended to receive financial support from the aquaculture sector.46
- Paludiculture: Wetlands International runs several paludiculture (wet agriculture) pilots that would enable productive land use without draining peatlands, which is intended to be a profitable form of agriculture.47
- Carbon finance: Wetlands International works to make wetland projects (e.g. peatland restoration) an investable solution using carbon credits. The organization works on carbon accounting guidance for wetlands and claims to have contributed to best practice guidelines and supportive IPCC frameworks.48
- Corporate restoration programs: Wetlands International helps companies set up conservation programs to improve their brand image and to unlock private sector finance for conservation. For example, Wetlands International has worked with the drink manufacturer Diageo to protect the wetlands the company depends on for its water supply.49
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8 Wetland cover percentage: We took the area estimates of (semi-)terrestrial and (semi-)freshwater wetland categories from the Global Wetland Outlook (2025, Table 1): estuarine waters, salt marshes, mangroves, tidal flats, lakes, rivers and streams, inland marshes and swamps, and peatlands. This amounts to 14 million km2 of wetlands. We divided this by the total surface of Earth’s land (141 million km2). 14 Mkm2 / 141 Mkm2 ≈ 10%.Species percentage: “Up to 40% of the world’s species live and breed in wetlands” UN Climate Change News, 2018
9 Rate of loss: “Wetlands, amongst the world’s most economically valuable ecosystems and essential regulators of the global climate, are disappearing three times faster than forests.” UN Climate Change News, 2018. Population decline since 1970: “Freshwater populations have suffered the heaviest declines, falling by 85%, followed by terrestrial (69%) and marine populations (56%)” WWF Living Planet Report, 2024
10 The source of the survey methodology and respondent selection is not made publicly available by the Ramsar convention secretariat. Based on their reporting, we think that threats to wetland loss (v.a.v. degradation) might be understated in this survey because of selection bias: places where wetlands are lost will have fewer respondents to report on the state of now non-existent wetlands. Table 3 in Global Wetland Outlook, 2025
11 We created this list of activities based on Wetlands International’s draft strategy which was shared with Giving Green. Wetlands International aims to release this strategy in early 2026.
12 We describe our certainty as low/medium/high to increase readability and avoid false precision. Since these terms can be interpreted differently, we use rough heuristics to define them as percentage likelihoods the assumption is, on average, correct. Low = 0-70%, medium = 70-90%, high = 90-100%.
13 See the sections on national-level policy advocacy and site-specific projects.
14 Correspondence with Wetlands International.
15 NDCs: See our sections on the Mangrove Breakthrough and the Freshwater Challenge. GMW alerts in East Africa: See our section on Global Mangrove Watch.
16 EU policy advocacy: See our section on European Union advocacy.Technical assistance in Argentina: See our section on national-level policy advocacy.
17 “The permanence of a unit of carbon removal or biodiversity gain refers to the likelihood of the CO2 sequestered, or biodiversity gained being maintained into the future” rePlanet, 2023, based on the definition by the Climate Change Committee.
18 See page 35 of Wetlands International’s 2024 annual review.
19 See our strategy report on reducing biodiversity loss for a discussion of the drivers of habitat loss.
20 “As reported in previous Global Wetland Outlooks, the key negative drivers causing wetland loss and degradation, identified by participants of previous WWSs, and confirmed in the 2024 “citizen science” WWS (Table 3), remain as: urban, agricultural and industrial pollution, urban expansion, industrial development, agricultural intensification, drainage, and non-native alien species introductions and invasions.” Global Wetland Outlook, 2025
21 See our section on site-level work.
22 ibid.
23 “The chance of leakage on a wider scale could occur, for example, if agricultural lands decommissioned from production due to restoration would increase demand for agricultural products that might cause pressure for drainage or disturbance of wetlands elsewhere into agricultural land. It is difficult to assess the risk of leakage of this kind, but if wetland restoration is concentrated on lands of marginal agricultural use, this risk would be low or negligible.” Government of Iceland, 2008
24 Search terms: “wetland”; “restore wetland”, “conserve wetland”. Conservation Evidence, n.d. (Retrieved November 2025)
25 A Ramsar site is a wetland ecosystem designated as a wetland of international importance under the Ramsar Convention ("The Convention on Wetlands").
26 The full list is on the website of Wetlands International.
27 “This World Mangrove Day, the Global Mangrove Alliance and partners are launching the Global Mangrove Watch. The Global Mangrove Watch is the world’s most comprehensive mangrove monitoring tool: an online platform that provides synthesized remote sensing data and tools, built to catalyse the action needed to protect and restore mangroves worldwide. It gives universal access to real-time data on where and what changes there are to mangroves around the world, and highlights why they are valuable in multiple contexts.” United Nations, 2020
28 “Global Mangrove Watch (GMW) is an online platform that provides the remote sensing data and tools for monitoring mangroves necessary for this. It gives universal access to near real-time information on where and what changes there are to mangroves across the world and highlights why they are valuable. With hi-res information on cover change, soil carbon, living biomass, canopy height and other parameters, Global Mangrove Watch gives coastal and park managers, conservationists, policymakers and practitioners the evidence needed to respond to illegal logging, pinpoint the causes of local mangrove loss and track conservation progress.” GMA, n.d.
29 “Using satellite data and machine learning, GMW spots disturbances, whether from illegal logging, storm damage, erosion, or agricultural conversion, within days.” GMA, 2025
30 Video on the YouTube channel of Wetlands International
31 “The Global Mangrove Watch was the key source of data used by the UNEP-WCMC for their special report, Decades of Mangrove Forest Change: What does it mean for nature, people and the climate?, exploring changes in mangrove cover to highlight the urgent need to better understand our “blue ecosystems”.” GMA, 2023
32 “These efforts are important building blocks towards an envisioned Global Peatland Watch, a digital platform to monitor changes and threats to the world’s peatlands.” Wetlands International, 2025
33 Intro and section 1: Wetlands International, 2025: “In Europe, we played a key role in a collaborative effort to develop a European Wetland Map, to be launched on World Wetlands Day.” Wetlands International, 2025
34 “The Guidelines for restoration, creation and management of salt marshes and tidal flats are a collaborative effort between Wetlands International and the Conservation Evidence Group at Cambridge University, incorporating insights from an international panel of experts.” Wetlands International, 2024
35 “They are already being used in two sites on the Yellow Sea coast in China, which are on a crucial waterbird flyway.” Wetlands International, 2025
36 “The proposed EU Nature Restoration Law presents a unique opportunity to address this issue, but other EU legislation, such as the Renewable Energy Directive, could exacerbate the problem. This inventory is a crucial tool in identifying priority areas for river restoration and designating no-go areas for hydropower development. Based on the biological criteria we developed in 2023, we identified 392 Swimways of European Importance (SEI).” Wetlands International, 2024
37 For the full list: Wetlands International, 2025
39 “Europe we helped ensure the inclusion of the river restoration targets in the Nature RestorationRegulation and developed the first ever mapping of Swimways of European Importance.” Wetlands International, 2025
40 “We helped ensure that the new EU Nature Restoration Law, coming into force in 2025, includes a mandatory target on peatland restoration. When enforced this will make a massive difference for peatland restoration.” Wetlands International, 2025
41 “We also influenced EU guidance on carbon certification, meaning that farmers and landowners will be able to receive financial incentives for restoring and sustainably managing peatlands.” Wetlands International, 2025
42 “We also promote Wetlands Partnerships between the EU and other countries, modelled after the successful Forest Partnerships, to channel EU funds towards wetlands. Discussions to establish the first partnerships are underway between Brazil, Colombia, and the EU.” Wetlands International, 2025
43 “This has had a major influence on the Indonesian government’s ambitious commitment to restore 600,000 hectares of degraded mangroves. Ecological mangrove restoration is now recognised in government policy and in the plans and training modules of the Peatland and Mangrove Restoration Agency.” Wetlands International, 2025
44 “We have helped strengthen protection for important mangrove areas. In Tanzania, the 596,900-hectare Rufiji Mafia Kilwa seascape was designated as a Man and Biosphere reserve by UNESCO, increasing protection from habitat degradation and resource overexploitation. We helped develop integrated management plans for protected areas and their buffer zones in the Gran Mano landscape (Liberia, Sierra Leone) and Lamu (Kenya), and have supported efforts to win protection for over 75,000 hectares of mangroves in Panama. [...] We have coordinated national efforts in Indonesia, Philippines, Guinea-Bissau and Senegal, where a strategy for mangrove conservation and restoration was recently endorsed by parliament.” Wetlands International, 2025
45 “In Argentina, we supported the government to add Península Mitre to the list of wetlands of international importance under the Ramsar convention and we helped develop peatland management plans for the Provincial Reserve. In Panama we shared knowledge and raised awareness about peatlands. In Uganda, we developed a peatland programme for the Nile Equatorial Lakes Region and completed an assessment of transboundary wetlands in the upper Nile catchment, securing funding to begin preliminary work in Sango Bay. [...] In Argentina, we enhanced the management plans for two Ramsar sites, the Iberá Wetlands (24,550 ha) and the mountainous Villavicencio Reserve (62,444 ha), as well as two sites in the Paraná Delta, the Victoria Multiple Use Reserve (432,500 ha) and the San Fernando Biosphere Reserve (88,624 ha). Additionally, in Peru and Argentina, we have improved the management of 430,841 hectares of Protected Areas. In Brazil we have contributed to updating the management plans of 5 reserves of the Amolar/Pantanal Protected Areas network, for a total of 66,398 hectares.” Wetlands International, 2025
46 See, for example: Wetlands International, 2025; 2020
47 See, for example: Wetlands International, 2025; 2023
48 See, for example: Wetlands International, 2024
49 “Through this major commitment to scaled funding and collective action, projects will be delivered that improve resilience in the landscapes, increasing biodiversity, water management and supporting local communities while safeguarding the natural resources on which the industry depends.” Wetlands International, 2025
What is Wetland International’s Cost-Effectiveness?
Because there is no straightforward outcome variable to measure and compare biodiversity benefits, we did not perform a cost-effectiveness analysis of Wetlands International (or other biodiversity nonprofits). However, we see two qualitative arguments for Wetlands International’s cost-effectiveness.
Firstly, Wetlands International leverages larger, wealthier, and more powerful actors like governments, investors, and larger NGOs to scale up their wetland conservation and restoration work through initiatives such as the Mangrove Breakthrough, the Freshwater Challenge, and its policy engagements. The organization also helps other actors spend their resources more effectively by providing technical assistance and tools for more effective conservation and restoration. For example, Wetlands International conducts research and pilots to improve survival rates of mangrove restoration projects, and is a co-organizer of the Global Mangrove Watch initiative, which enables governments to better respond to threats to mangroves.
Secondly, we believe the focus on wetland conservation significantly contributes to the organization's cost-effectiveness. Because Wetlands International’s work concentrates exclusively on this area, its cost-effectiveness is not diminished by engagement in other impact areas that might be less favorable in terms of scale, feasibility, or funding need. We explain why we are optimistic of philanthropic engagement for wetland conservation in our strategy report on reducing biodiversity loss.
Is There Room for More Funding?
Wetlands International’s Funding Status
In 2024, Wetlands International’s Global Office had a revenue of €15.0 million (EUR), which is roughly equivalent to $17.7 million (USD).50 Including funding for its network offices, Wetlands International’s total revenue was €21 million in 2024. In 2023, the total revenue of the Global Office in 2023 was €14.5 million and the total revenue (including network offices) was €22.4 million. This means that the Global Office has grown slightly between 2023 and 2024, but the overall group of organizations has slightly shrunk. Wetlands International’s growth is illustrated in Figure 4.51 While the organization’s financial statements for 2025 are not yet available, the organization predicts that its 2025 financials are close to its 2024 financials.

As illustrated in Figure 5, Wetlands International’s 2024 budget mainly comes from grants by foundations and NGOs (47%) and government grants (33%), with some remaining budget coming from lotteries that are required to donate to charities (5%), and companies sponsoring initiatives or collaborating on projects (15%).52 Contributions from individual donors contribute a negligible amount (0.2%).53 According to Wetlands International, the contributions from companies and governments are often restricted; they are commonly earmarked for specific initiatives or geographies, or are intended for technical assistance to the donor.

Wetlands International said it aims to diversify its funding sources by increasing fundraising from individuals because commitments for biodiversity protection from governments and institutional donors can be unstable in a changing political climate. Historically, Wetlands International has not emphasized fundraising from individuals, as it had noticed that its work is not well-known to the general public, which made it challenging to reach the intended donor audience.54
In recent years, Wetlands International has received support from some prominent funders aligned with the giving strategy of Giving Green, which focuses on evidence-based and impact-focused opportunities.55 The German effective giving organization Effektiv Spenden arranged a donation of approximately €0.5 (EUR) million in 2024 and its Netherlands-based counterpart Doneer Effectief worked with the Nieuwe Waarde Foundation and Cycling for Climate for donations of approximately €89,000 (EUR) and €125,000 (EUR), respectively.56 Wetlands International’s core funding comes from the COmON Foundation, the Dutch Postcode Lottery’s charitable arm, and membership dues of the members of the Wetlands International Association.57
Funding Gap
As of early December 2025, Wetlands International’s Global Office has secured €10.9 million EUR ($12.7 million USD) in funding for 2026, including some expected grants with a high probability (>80%) of success. For 2026, the Global Office aims to raise a minimum of €12.2 million EUR ($14.2 million USD) to support its existing initiatives, and €12.9 million to €15.9 million EUR ($15.0 million to $18.5 million USD) to scale up its work. We give an overview of Wetlands International’s fundraising goals and funding gap in Table 3.

It is important to note that Wetlands International plans to grow the relative importance of its network offices, which means that its Global Office will manage a smaller part of the total budget. As a result, the Global Office needs fewer funds to cover the cost of running its network offices for the organization to continue its current level of operations. While previously a large part of funding restricted to specific geographies flowed through its Global Office, the organization’s network offices are taking an increasingly large role in fundraising and grant management in response to a funding landscape that favors funding local actors. Several grants that were previously managed by its Global Office are now managed by its network offices.
Wetlands International expects that it can continue fundraising in 2026 to cover its existing costs, but not the expansion of its programs. The organization expects to be able to raise another €1.3 million EUR ($1.51 USD) per year from new prospects.
Funding Goals
Wetlands International’s growth ambitions consist of three main parts:
- Increasing core funding to invest in its coalitions and knowledge tools, developing funding prepositions for its twelve flagship landscapes, increasing its policy influence, and investing in its network offices.
- Launching the Wetlands Impact Facility (WIF)
- The WIF, planned to launch in 2027, will provide semi-flexible funding for wetland conservation and restoration. It will not be limited to specific landscapes or sites, and can support cross-learning between landscapes and upscale existing works.
- Wetlands International can use WIF funding where it is needed most for landscape-level conservation and restoration work, while also reducing donor risks and overhead costs for grant reporting.
- Increasing restricted funding for local conservation and restoration programs, which are executed by its Global Office and its network offices.
We describe in more detail how Wetlands International would use (semi-)unrestricted funding in the section below.
Use of Additional Unrestricted Funds
Historically, most of Wetlands International’s funding has been restricted to executing site-specific or landscape-specific projects. In communication with Giving Green, Wetlands International has indicated that the organization would use €5 million EUR ($5.8 million USD) in unrestricted funding (“core funding”) in the five main ways described below.59 We emphasize that these numbers are intended to illustrate Wetlands International’s spending priorities rather than a list of fundable opportunities, and that the organization’s use of unrestricted funding may change depending on future sources of funding. We recommend donors provide unrestricted funding so that the organization can allocate its income to where it is needed most.
- Supporting three global initiatives with increased funding (€1.2 million EUR; $1.4 million USD): Wetlands International wants to increase core funding for the Freshwater Challenge, Mangrove Breakthrough, and the Peatland Breakthrough. In 2026, the organization wants to set up and support “national chapters” of these initiatives and support participating countries in aligning and implementing their biodiversity, climate, and water policies.
- Improving knowledge and tools (€1.0 million EUR; $1.2 million USD): Wetlands International plans to expand the scope and functionality of the Global Mangrove Watch to cover more wetland types (€700,000) and prepare a Waterbird Population Estimate report based on its waterbird census (€300,000).
- Expanding work in six priority landscapes (€1.0 million EUR; $1.2 million USD): Wetlands International plans to convene stakeholders in six of its 12 priority landscapes to assess conservation needs and develop fundable conservation proposals.
- Investing in communications and advocacy (€900,000 EUR, $1.0 million USD): Increasing influence on decision-making processes in governance fora (e.g. the Ramsar convention and UNFCCC), and increasing the visibility of the organization and wetlands in the media and with key audiences.
- Increasing fundraising (€400,000 EUR; $466,000 USD): Wetlands International wants to diversify its funding base to adapt to political challenges and support network offices with fundraising. Wetlands International aims to market its future Wetlands Impact Facility to donors in the U.S. and Europe.
- Investing in developing network offices (€500,000 EUR; $582,000 USD): Wetlands International aims to explore new locations and invest in stronger monitoring and evaluation.
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50 Euros converted to U.S. dollars based on the conversion rate in November 2025.
51 Wetlands International, 2025
52 In the Netherlands, lotteries are obligated to donate 40% of their revenue to charities.
53 Annex to the 2024 Annual Review of Wetlands International, section 1.2. Wetlands International, 2025
54 Correspondence with Wetlands International
55 Read more about our approach here.
56 “Destination reserves [...] 1460 - UES – Gemeinnützige GmbH für effektives Spenden [...] Spending 12/31/2023 -476,226. [...] Donation was received in 2021. The donation was fully spent in 2023 on the implementation of the abovementioned project.” Wetlands International, 2025, annex
“Stichting Nieuwe Waarde heeft in 2024 een donatie toegekend aan Wetlands International, een wereldwijde non-profitorganisatie die zich inzet voor het behoud en herstel van wetlands. [...] Voor dit project loopt de financiering via partner Doneer Effectief.” (Translation: In 2024, Nieuwe Waarde Foundation has awarded a donation to Wetlands International, a worldwide nonprofit organization that works to conserve and restore wetlands. [...] For this project, financing goes via our partner Doneer Effectief.) Stichting Nieuwe Waarde, 2024
“List of projects [...] Global Office, Americas, Coasts & Deltas, Mangrove restoration Arco Seco Panama, Trust/Foundation/NGO/Institute, Stichting Nieuwe Waarde, 88.736, 88.736” Wetlands International, 2025, annex
57 “The core funding from COmON and the Dutch Postcode Lottery enabled us to make decisive investments as mentioned above and a 3-year, €9 million support from COmON has been secured for the period 2025-2027, with a 10% topup from UBS Optimus expected to be approved in July 2025.” Wetlands International, 2025
58 Converted using the exchange rate on 2025-12-04.
59 This list is adapted from a slide deck shared with Giving Green originally prepared for the COmON Foundation and was previously shared with us verbally in a call with Wetlands International staff.
Are There Major Co-Benefits or Potential Risks?
Wet think that Wetlands International’s potential co-benefits and potential risks are directly related to those of wetland conservation and restoration more generally. We briefly list these below.
Co-Benefits and Wetland Ecosystem Services
- Climate change mitigation: As we describe in our climate-focused strategy report on restoring and protecting wetlands, wetlands store a disproportionate amount of the Earth's total soil carbon content. It is estimated that wetlands hold “between 20 and 30 percent of the estimated 1,500 Pg of global soil carbon despite occupying 5-8 percent of its land surface.”60 Counterfactually conserving wetlands avoids the release of this carbon stock from the biosphere to the atmosphere and therefore reduces global warming. For climate change mitigation, Giving Green’s priority is preserving existing wetlands for their long-term carbon storage, with policy playing a key role in protection. For immediate climate benefits, we believe conservation should come first, as restored wetlands may take decades to be effective. Among restoration efforts, we prioritize coastal wetlands for climate change mitigation due to their cost-effectiveness and quicker climate benefits. We view most inland wetland restoration as a long-term climate investment with limited climate impact within 100 years of restoration. Overall, we view the climate benefits of restoring and protecting wetlands positively but have ultimately prioritized other climate change impact areas based on scale, feasibility, and funding need.
- Disaster risk reduction and climate change adaptation: Wetlands can protect human settlements from extreme weather events, such as storms, tsunamis, droughts, and floods, by storing water or acting as a buffer against high water levels.61
- Water quality: Wetlands can reduce pollution levels in surface water by reducing the adverse effects of soil erosion, runoff, and wastewater contamination.62
- Food production: Rivers support one-third of global food production, according to WWF.63
Potential Risks
- Fortress conservation: In conservation, fortress conservation describes the “creation of protected areas for terrestrial or marine wildlife by the coerced displacement or exclusion of the existing inhabitants.”64 We think that Wetlands International’s conservation efforts are not likely to lead to fortress conservation as the organization involves local communities in its site-based conservation efforts.
- Short-term warming effect from some restored wetlands: As we describe in our climate-focused strategy report on restoring and protecting wetlands, wetlands are natural producers of methane and nitrous oxide, which are potent greenhouse gases with shorter lifespans than carbon dioxide (CO2). When degraded wetlands are restored, they may initially cause warming because methane and nitrous oxide emissions outweigh the cooling effects of carbon storage. However, over time, restored wetlands shift from causing warming to cooling, because methane and nitrous oxide eventually break down in the atmosphere and wetlands continue to store carbon dioxide indefinitely. The risk of a short-term warming effect especially applies to peatlands and freshwater marshes, with estimated “switchover” times from carbon sources to sinks of 298.2 ± 100.6 and 2184 ± 1029 years, respectively.65 Wetlands International’s position on methane emissions is (a) that methane emissions from rewetting can be reduced using appropriate guidelines, and (b) that these emissions are temporary compared to the lasting carbon sequestration effects of wetland restoration. We do not expect that methane spikes from some types of wetland restoration negatively affect biodiversity outcomes.
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60 Nahlik & Fennessy, 2016. Pg: One petagram (Pg) is equal to one billion metric tons. Carbon storage: There is no consensus on how much carbon is truly stored in wetlands. According to Mitra et al. (2005) there is somewhere between 350 to 535 billion metric tons of carbon stored in wetlands. In contrast, Adhikari et al. (2009) believe that there is about 150 billion metric tons of carbon in wetland soils. Disagreements in carbon stocks and surface area stem from differences in how wetlands are defined and differences in how carbon stock is estimated. Additionally, some types of wetlands are understudied. For example, freshwater wetlands in tropical regions receive relatively little attention.
61 “Wetlands shield human communities from extreme weather events. They function as a buffer against the effects of storms, tsunamis, droughts, and floods. Communities can also recover from disasters with the aid of well-managed wetlands.” PreventionWeb, n.d.
62 “Wetlands perform as NBS to reduce levels of contaminants in surface waters by moderating the adverse water quality impacts of soil erosion, runoff, and wastewater contamination. Wetlands buffer the degradation of water quality by retaining pollutants due to mechanical processes (i.e., sedimentation, filtration), adsorption on the substrate, biosorption and other more complex and interlinked processes between plants and microorganisms, and disinfection due to UV radiation from sunlight” Ferreira et al., 2023
63 WWF, n.d.
64 Rogers et al., 2013 (Oxford Reference)
65 Estimates from Taillardat et al., 2020, which is a meta-analysis of the climate change mitigation potential of wetlands and their switchover times.
Key Uncertainties and Open Questions
Attribution of impacts to Wetlands International: Some of Wetlands International’s initiatives that we think highly about are executed in collaboration with other nonprofits, such as the “coordinating members” of the Mangrove Alliance or the “Core Partners” of the Freshwater Challenge.66 Because Wetlands International frequently collaborates with other actors, it is challenging to attribute the impact of Wetlands International to the establishment of these initiatives and their results on the margin. We are uncertain whether to see this information as evidence that only part of these results should be attributed to Wetlands International, or as evidence that Wetlands International can leverage the resources and credibility of international organizations and other nonprofits. Overall, we think that Wetlands International’s contribution to these initiatives is substantial, and we think that the organization plays a unique role in these initiatives as the only wetlands-focused organizations in these alliances.
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66 The “coordinating members” of the Global Mangrove Watch are Conservation International, The Nature Conservancy, IUCN, Wetlands International, and the World Wildlife Fund. Global Mangrove Alliance, n.d. The “Core Partners” of the Freshwater Challenge are Conservation International, IUCN, the Secretariat of the Convention on Wetlands (Ramsar), The Nature Conservancy, the United Nations Convention to Combat Desertification (UNCCD), the United Nations Environment Programme (UNEP), Wetlands International, and the World Wildlife Fund. Freshwater Challenge, n.d.
Bottom Line and Next Steps
We classify Wetlands International as a Top Biodiversity Nonprofit. We believe that the organization has made significant contributions to developing effective wetland conservation and restoration practices. Through policy engagements and collaborative initiatives like the Freshwater Challenge, Mangrove Breakthrough, and Global Mangrove Watch, it has increased global attention and funding for wetland conservation. We believe Wetlands International can further expand its efforts within these programs and replicate its successes in other wetland types, including peatlands.
Although we think Wetlands International is promising, we are still uncertain about the scale of biodiversity loss averted through its actions, in part because biodiversity is difficult to measure, and in part because it is difficult to assess the total impact of its initiatives and Wetlands International’s contribution to successes. We hope to continue our research to assess these uncertainties and improve our understanding of their severity and importance.
We plan to publicly recommend Wetlands International as a Top Biodiversity Nonprofit in early 2026 along with several other nonprofits for donors interested in increasing the impacts of their biodiversity donations. With continued funding for our biodiversity research, we aim to address our existing uncertainties and assess the relative importance of wetland conservation to other strategies that reduce biodiversity loss.
External Links
- Website of Wetlands International
- Wetlands International’s annual review 2024 and financial annex
- Financial transparency passport of Wetlands International by charity assessor CBF
Appendix A: Coalitions for Wetlands
This appendix provides more details on and references for the coalitions for wetlands that are (co-)created by Wetlands International, based on Table 2.
Freshwater Challenge
Wetlands International is one of eight core partners that supported the creation of the Freshwater Challenge in 2023, which was an initiative by the governments of Colombia, the Democratic Republic of the Congo, Ecuador, Gabon, Mexico, and Gambia. The challenge aims to integrate freshwater ecosystems in global, regional, and national processes, supports countries to define quantitative and specific goals, and implement the commitments by mobilizing financial resources.67 As of November 2025, 54 countries and the European Union have joined the Freshwater Challenge, committing to set public quantifiable targets to restore and conserve freshwater ecosystems.68 In 2024, the Freshwater Challenge secured $5 million USD in funding from the Global Environment Facility (GEF) to support monitoring the objectives of the challenge, their operationalization, learning, and communications, as well as targeted pilots.69
After the United States announced its participation in the Freshwater Challenge in 2023, the Biden-Harris administration set its national goals in the “America the Beautiful Freshwater Challenge” in 2024.70 While the Trump administration overturned the conservation targets of the U.S. in 2024, we think that the earlier commitment by the U.S. exemplifies the reach and influence of the Freshwater Challenge.71
Since joining the Freshwater Challenge, Liberia, Tanzania, Peru, Chile, and Brazil have started to develop national freshwater targets linked to National Adaptation Plans (NAPs), Nationally Determined Contributions (NDCs) to the UNFCCC, and National Biodiversity Strategies and Action Plans (NBSAPs) to the Convention on Biological Diversity (CBD). While we cannot fully ascertain that freshwater ambitions would have been less ambitious without the Freshwater Challenge, we think that the Freshwater Challenge has been key to bringing attention to the importance of wetlands in the international policy arena.
We also think that the ability of the core partners of the Freshwater Breakthrough to get substantial support from funders and governments exemplifies the influence of the Freshwater Challenge. The Freshwater Challenge also achieved support from three companies (GSK, Reckitt, and Edeka), although we did not find the amounts.72
As a core partner of the Freshwater Challenge, Wetlands International supported the creation, has a coordinating role, and provides technical assistance at the global and national level.73
Global Mangrove Alliance
In 2018, Wetlands International was one of the five founding partners or “coordinating members” of the Global Mangrove Alliance (GMA), along with Conservation International, the IUCN, The Nature Conservancy, and the World Wildlife Fund. The GMA aims to scale up the recovery of mangroves through the protection and restoration of mangrove ecosystems.74
The GMA’s goals are to halt mangrove loss to net-zero, restore half of all restorable mangroves lost since 1996, and double the mangrove area under conservation from 40% to 80%. GMA helps communities understand the available financing options for mangrove conservation, works on improving policies, builds capacity and awareness of best practices, and shares knowledge of mangrove conservation.75
- Alternate Livelihoods: Supporting scalable livelihood options that minimize mangrove loss.
- Financing Models: Ensuring that local groups understand mangrove protection financing pathways.
- Improving Policy: Working with governments to develop and implement integrated management plans.
- Building Capacity: Building awareness of best practices, benefits, development strategies, and cost-effectiveness of mangroves among policymakers and other relevant actors.
- Knowledge Sharing: Connecting the knowledge and tools required to integrate mangroves in relevant strategies.
As of November 2025, the GMA has over 100 members, of which more than 40 are national governments. There also exist 14 national chapters tailoring mangrove protection to local needs and ecology.76 However, membership does not create an obligation to contribute financially.
Mangrove Breakthrough
In 2022, the Global Mangrove Alliance launched the Mangrove Breakthrough initiative in collaboration with the UN Climate Change High-level Champions.77 The Mangrove Breakthrough aims to mobilize $4 billion USD for systemic long-term financing and protection of 15 million hectares of mangroves.78 The Mangrove Breakthrough and its secretariat (located at Ambition Loop in Chile) works to unlock capital for mangroves, de-risk mangrove investments, create a community for mangrove advocacy, advocate for mangrove policies, scale mangrove projects using a project pipeline, and raise attention to the importance of mangroves.
As of November 2025, the Mangrove Breakthrough has tracked $750 million USD in mangrove-positive investments over $1 million USD, although it is difficult to ascertain whether these investments would not have happened in the absence of the Mangrove Breakthrough. The 44 governments that have endorsed the Mangrove Breakthrough collectively host about 40% of all global mangroves. At least seven signatories have set targets for mangrove conservation and restoration in their NDCs for the UNFCCC, although we cannot ascertain that these commitments will be implemented or would have been less ambitious in the absence of the Mangrove Breakthrough.79
The Mangrove Breakthrough is currently working on the creation of a “Mangrove Catalytic Facility” (MCF). The MCF aims to support development of investable solutions for mangrove ecosystems to draw additional (non-catalytic) funding,80 and works to create a pipeline of projects to connect with philanthropic, public, and private sources of capital.81
As one of five founders of the Global Mangrove Alliance, Wetlands International is part of the Mangrove Breakthrough’s leadership, and leads the initiative’s work on regional roadmaps and country proposals to mobilise funding as part of the “Mobilizing the Mangrove Breakthrough” (MBB) initiative funded by Bezos Earth Fund.82
The Global Mangrove Alliance also runs Global Mangrove Watch, which we discuss in the section on knowledge creation and valorization.
Peatland Breakthrough
In 2025, Wetlands International announced the Peatland Breakthrough initiative, led together with the United Nations Environment Programme (UNEP), the FAO, and the Greifswald Mire Centre, in close alignment with the Global Peatlands Initiative and the Convention on Wetlands. The Peatland Breakthrough aims to replicate the Mangrove Breakthrough for the peatland biome,83 and is currently being developed.84
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67 “There are eight Core Partners of the Challenge: Conservation International (CI), the International Union for Conservation of Nature (IUCN), the Secretariat of the Convention on Wetlands (Ramsar), The Nature Conservancy (TNC), the United Nations Convention to Combat Desertification (UNCCD), the United Nations Environment Programme (UNEP), Wetlands International and WWF.” Freshwater Challenge, n.d.
68 “54 countries and the European Union have joined the Freshwater Challenge so far. [...] Australia, Bangladesh, Botswana, Brazil, Burkina Faso, Cambodia, Canada, Chad, Chile, Colombia, Dominican Republic, DR Congo, Ecuador, El Salvador, Fiji, Finland, France, Gabon, Gambia, Germany, Greece, Guinea, Iraq, Kazakhstan, Kenya, Liberia, Madagascar, Malawi, Mali, Mauritania, Mexico, Moldova, Mozambique, Namibia, Nepal, Netherlands, Niger, Norway, Pakistan, Panama, Peru, Republic of Congo, Senegal, Slovenia, South Africa, Spain, Tajikistan, Tanzania, UAE, Uganda, United Kingdom, USA, Zimbabwe, European Union” Freshwater Challenge, n.d.
69 “The GEF investment will support: Countries and development institutions to monitor Freshwater Challenge objectives; Countries to operationalize their Freshwater Challenge objectives from source to sea; Country learning to strengthen national Freshwater Challenge objectives; and Communications to raise awareness locally, nationally and globally about the central role of healthy freshwater ecosystems in tackling the climate and nature crises and driving sustainable development. [...] The GEF contribution will support targeted pilots and promote innovative metrics and communication efforts.” Wetlands International, 2024
70 “The United States announced its participation in the Freshwater Challenge at COP28 in December 2023. Subsequently, the Biden-Harris administration launched the America the Beautiful Freshwater Challenge in April 2024, setting ambitious national goals. These include reconnecting, restoring, and protecting 8 million acres of wetlands and 100,000 miles of rivers and streams by 2030.” WWF, n.d.
71 “But among an avalanche of other executive actions in the past month [February 2025], President Donald Trump overturned the U.S.’s 30% commitment.” Mongabay, 2025
72 “While country-led, businesses have an important role to play to help meet the ambitious aims of the Challenge, which has created a Business Supporter Program to facilitate this. GSK, Reckitt and EDEKA are the first companies to join the program.” Wetlands International, n.d.
73 “The Core Partners have been involved from the Challenge’s inception. They supported the creation of the FWC with a set of leading countries, and now provide assistance and a coordinating role within the Challenge at global and national levels.” Wetlands International, n.d.
74 “In 2018 Conservation International (CI), the International Union for Conservation of Nature (IUCN), the Nature Conservancy (TNC), Wetlands International, and World Wildlife Fund (WWF) formed the Global Mangrove Alliance (GMA). This partnership now includes over 30 member organizations that share the aim of scaling up the recovery of mangroves through equitable and effective expansion of both mangrove protection and the restoration of former mangrove areas. The GMA works worldwide in supporting research, advocacy, education and practical projects on the ground with local and community partners.” Wetlands International, 2022.
75 “Goals [...] Halt loss. Reduce net mangrove losses driven by direct human actions to zero, avoiding losses of approximately 154,500 ha of mangroves. [...] Restore half. Conduct science-based restoration to bring back half of all restorable mangroves lost since 1996, approximately 397,000 ha. [...] Double protection. Increase areas under conservation measures from 40% to 80%, protecting approximately 9.7 million total hectares of mangroves.” GMA, n.d.“The Global Mangrove Alliance will use its collective strengths and partnerships to address the barriers to large-scale mangrove conservation and restoration through several streams of work, including: Alternate Livelihoods – Support small-scale supplementary livelihood options, develop a portfolio of responsibly scalable options and optimize aquaculture or related opportunities that minimize mangrove loss. Financing Models – Ensure that local groups understand the financing pathways open to them, including how to access them, the pros and the cons. Improving Policy – Work with governments to develop and implement integrated management plans that activate global policy commitments and consider the multi-jurisdictional nature of mangrove conservation and restoration. Building Capacity – Build awareness of best practices, benefits, development strategies and cost-effectiveness of mangroves among policymakers, financing institutions, NGOs and others through national chapters, local mangrove champions and experts. National chapters allow us to prioritize efforts and scale impact. Knowledge Sharing – Connect the knowledge and tools required to integrate mangroves and their ecosystem services into mitigation, adaptation, disaster risk reduction and land-use strategies with community and national leaders.” GMA, n.d.
76 “100+ Members, 40+ Countries, 14 National Chapters, 10 Regional Programs” GMA, n.d.
77 “The Global Mangrove Alliance (GMA) in collaboration with the UN Climate Change High-level Champions have identified the need for a unified global approach towards mangrove conservation and are therefore calling for signatories to the “Mangrove Breakthrough” being launched today at COP27.” Wetlands International, 2022
78 “We’re mobilizing $4 billion to secure the future of 15 million hectares of mangroves by 2030. By shifting from short-term fixes to systemic, long-term investment, we ensure mangroves are financed, protected, further studied, and fully integrated into global economic and climate frameworks.” Mangrove Breakthrough, n.d.
79 Investment tracking includes two years before the launch of the Mangrove Breakthrough.“The Mangrove Breakthrough has tracked more than 40 large operations (over $ 1 million) that have mobilized over $750 million in mangrove-positive investments since 2020. And the landscape is expanding, our partners at Capital for Climate have tracked over USD 840 million in nature-positive investments through 56 projects that include mangrove ecosystems. Together, the 44 governments that have endorsed the Mangrove Breakthrough represent approximately 40% of the world’s total mangrove coverage—a remarkable testament to growing global leadership and collaboration. Several of these countries—including Jamaica, Papua New Guinea, Brazil, Australia, Costa Rica, Panama, and Pakistan—have set ambitious targets in their Nationally Determined Contributions (NDCs) under the Paris Agreement. ” GMA, 2025
80 “The MCF supports actors across the value chain in developing investable solutions for mangrove ecosystems, from small and medium enterprises to financial institutions and national governments. [...] Ultimately, the objective is for mangrove value to be integrated into investment decisions for mangrove-adjacent businesses (infrastructure, ports, coastal agriculture, aquaculture, etc.). With a USD 80 million fundraising target, the Facility is designed to multiply the impact of every dollar invested in mangroves, serving as a catalytic structure for achieving the overarching goal of mobilizing USD 4 billion for mangrove ecosystems.” GMA, 2025
81 “The Breakthrough is partnering with Restor to launch the most comprehensive mapping and monitoring platform [...] helping connect verified projects with philanthropic, public, and private sources of capital.” GMA, 2025
82 “Wetlands International and the Global Mangrove Alliance is in the process to lead the development of Regional Roadmaps and country proposals to mobilise large-scale funding to achieve the Breakthrough targets by supporting locally led action on the ground and addressing impediments to scaling conservation and restoration efforts.” Ambition Loop, 2024
“The Mobilizing the Mangrove Breakthrough (MMB) is a project initiated by the Global Mangrove Alliance, supported by the Bezos Earth Fund. This initiative provides seed funding to develop propositions for programs at scale in an initial set of priority countries. This GMA-project is coordinated by Wetlands International in close collaboration with the Mangrove Breakthrough Secretariat.” GMA, n.d.
83 “The Peatland Breakthrough is led by Wetlands International, the United Nations Environment Programme, the Food and Agriculture Organization of the United Nations, the Greifswald Mire Centre, developed in close alignment with the Global Peatlands Initiative, and in collaboration with the Convention on Wetlands.” Global Peatlands Initiative, n.d.
84 “The Breakthrough is currently in the initial Development Phase, focusing on building momentum, gaining public awareness, setting scientifically robust and widely accepted targets and principles, and engaging a wide range of stakeholders through inclusive processes.” UNEP, 2025
“Following the official launch by UNFCCC COP30, the focus will shift to turning targets into action across global, regional, and national levels—supported by finance, policy, and best practices.” Wetlands International, 2025
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