The EbA measures implemented in the sub-basin focused on water and soil ecosystem services, on productive diversification and on mitigating the impacts of climate change on crops and community assets. Together with >100 producers from the upper part of the sub-basin, fruit and timber trees were introduced into agroforestry systems bordering 7 water sources, and organic agriculture was encouraged, allowing families to diversify their income and reduce the vulnerability of their crops, productive infrastructure and housing, which are affected by strong winds. This, in combination with soil and water conservation practices (hillside irrigation ditches, non-burning and crop residue incorporation), has helped to reduce soil erosion caused by extreme rainfall, as well as improved moisture retention in crops, soil fertility, and water infiltration and capture in the area. The EbA measures not only generate more resilient agro-ecosystems, but also increase the availability of water, which benefits >400 families in the sub-basin. These actions have raised awareness of the need for ecosystem and adaptive approaches to territorial management in the face of climate change.

Supporting producers to implement EbA measures that improve their productive practices and increase the resilience of agro-ecosystems, generates an "action learning" process that allows other actors to witness the benefits of these measures and creates conditions for their sustainability and up-scaling.

• The socio-environmental vulnerability of communities and their livelihoods is examined, in a participatory way, in order to then prioritize EbA measures and their location.
• Technical support is provided to producers, complemented with their traditional knowledge, to plan and implement the EbA measures (improvements to agroforestry systems).
• Training and exchanges of experience are carried out on transboundary cooperation; integrated management of water resources; AbE; policy frameworks and legislation on water and climate change; and policy influencing and communication.
• Monitoring of food and water security is carried out with 14 families.
• The governance and management capacities of community and municipal entities linked to water resource management is strengthened.

The increase in skills and knowledge strengthens social capital and contributes to community empowerment and to valuing ecosystem services and their management for the benefit of all.

Governance for adaptation requires an ecosystemic vision, whereby actions implemented in the field for building up the resilience of natural resources focus more on protecting watershed ecosystem services (forest-water-soil) and less on responding only to problems found at the level of individual farms. For this reason, the prioritization of restoration areas is key, since it must be with a view to improving water capture and also productivity (local livelihoods). The three types of EbA measures implemented in the Goascorán River basin were: 1) restoration of water sources, 2) soil conservation, and 3) agroforestry systems. This combination recognizes the interdependence of the forest-water-soil components and allows communities to witness positive changes over intermediate periods, which in turn increases their confidence in the "natural solutions" being introduced for water and food security. Territorial management with a basin or micro-basin vision also contributes to the ecosystem approach that is required for sustainable development, that is, one that is adaptive to climate change.

Adaptation to climate change is immersed in a series of uncertainties regarding future climate impacts and development trajectories. Therefore, adaptation must proceed under a flexible “learning by doing" approach, integrating flexibility into legal and policy frameworks, and into sequential and iterative decisions that generate short-term strategies in view of the long-term uncertainties. In Goascorán, the lack of regulatory and policy frameworks for the management of shared basins limits the capacity to jointly respond to climate change - and therefore to be flexible and learn. This limitation was remedied by integrating adaptation into various management instruments at the micro-watershed, municipal and national level, and in transboundary agendas between local actors. The effectiveness of these (and other new) frameworks should be evaluated in interim periods, to allow for revisions and adjustments as knowledge about climate change increases; the same is true for EbA measures in the short term. The information that underpins these iterative processes must integrate Western science with local knowledge. In this way, it is possible to be flexible and identify new adaptation options and criteria for its evaluation.

The participation of all basin stakeholders has been at the core of the conformation and training of new governance structures for the Lituy (Honduras) and Honduritas (El Salvador) microbasins. The integration of grassroots (community-based) organizations, such as water boards, producer associations, women's or youth groups, Community Development Associations and educational centers, has been important. Locally, the leadership shown by teachers, women and community authorities contributed significantly to social mobilization and the adoption and scaling-up of EbA measures, making these actors an essential part of the "learning by doing" processes of communities. The result is self-motivated communities that participate and take on responsibilities. At the basin level, the Goascorán River Basin Council on the Honduran side was expanded, while in El Salvador, the most appropriate figure to accommodate the broad membership required was the Environmental Technical Table, which is why two Tables (for the northern and southern areas of La Union) were created and strengthened. Many of the members have become advocates for the work of the Tables with the aim to have these structures recognized by local authorities and legalized in the medium term.

The work in Goascorán targeted several levels of decision-making to reinforce the basin’s governance through the vertical and horizontal articulation of socio-political platforms; all of this in order to achieve a multidimensional (multilevel and multisectoral) governance model for adaptation. At the community level, EbA measures were implemented in the field to improve food and water security. With municipalities, adaptation to climate change was incorporated into Environmental and Municipal Development Plans. At the micro-basin level, two Micro-basin Committees (one on each side of the border) were created as multi-stakeholder governance platforms, receiving training, preparing internal regulations and plans, and enabling wide-ranging advocacy (e.g. civil society, municipalities and municipal commonwealths). At the basin level, in El Salvador, where several Technical Tables operate, two Environmental Technical Tables were established for the north and south of La Union in order to articulate the basin’s shared management, and linkages were sought with the Goascorán River Basin Council that operates on the Honduran side. At the national level, the recent National Adaptation Plan of Honduras comprises the EbA approach, as does the new Regulation of the Honduran Climate Change Law

 Within Chiapas rural governance structures, the ejido Assembly is the main social platform where participatory decisions are made regarding natural resources. Ejido land tenure in Mexico is an example of individual and communal tenure co-existing within communities. Communal lands are titled in the name of the community leaders. Ejido Azteca and Alpujaras are partly witin the Tacana Volcano Reserve.

With a view to increasing the ejidos adaptive and management capacity main actions undertaken under this solution were:

• Training on climate change legal and policy frameworks was delivered to ejido leaders and municipalities officers.
• Development of the Local Strategy for Sustainable Development under Climate Change of La Azteca ejido.
• Conformation of ejido's Water Committees. 
• Public presentations on events such as the VII National Congress on Climate Change Research. Leaders shared the benefit of soil conservation practices and forest protection to water security.

Within ejido community structures, the ejido assembly acts as a governance platform and is the highest decision-making body. Achieving the approval of the assembly was a key step to initiating and then increasing mangrove restoration efforts in the Conquista Campesina ejido. A community program was developed for the conservation of wetlands and aquatic systems through the voluntary conservation of lands nominated as "ecological easements". Thanks to its work around the mangroves, the ejido’s organization has improved and generated more institutional linkages, both with state and federal entitites. This also opens up opportunities to up-scale adaptation needs to higher levels of government. With this aim of political advocacy, ejido members participated in the VII National Congress on Climate Change Research, sponsored by the recently re-activated Chiapas Climate Change Advisory Council, to present the benefits of EbA as well as proposals for their priorities to be taken into account in the State’s climate change policy. Assisting the ejido’s social organization therefore helped to enhance governance for climate change adaptation from the local to the state level.

Under an ecosystem-based adaptation approach and a micro-basin vision, efforts in Esquichá focused on improving livelihoods and ecosystem resilience in order to reduce climate change vulnerability. Tropical storms and hurricans such as the Stand affected communities in the past (water infraestructure, erosion or loss of water springs). Applying an ecosystem approach was part of strengthening governance for climate change adaptation in the Esquichá micro-watershed.

Measures implemented are: 

• protection and recovery of forests in water recharge zones. E.g. protection of pine forests (Abies guatemalensis) that harbour water sources that supply populations in the lower part of the micro-basin.
• Restoration of degraded lands and stabilization of slopes
• Implementation and optimization of agroforestry systems.

Additionally, there was broad acceptance of the need for a more integrated approach to water resource management, partly due to the water scarcity that communities suffer during the dry season and in the upper parts of the micro-basin. The concept of environmental social responsibility was also promoted among communities, whereby upstream communities take measures that benefit downstream communities. 

Governance options and responses for adaptation to climate change are new and must be constantly evolving; desicions and governance pklan need to be flexible; hence adaptation must move forward under a flexible approach. This is possible with the application of EbA measures with a "learning by doing" while using best available sicientific information on climate scenarios and informing policy local and national instruments.

Climate vulnerability in Esquichá was assessed using the CRiSTAL tool ( “Community-based Risk Screening Tool – Adaptation and Livelihoods.")

After a first planing of EbA activities, actions for integrating flexibility were:

• The periodic evaluation of field EbA actions and the adoption of short-term decisions
• Monitoring and evaluation results will be key to include important adjustments
• Inclusion of EbA measures in the Microbasin Management Plan
• Assessment of measures to inform the municipality Development Plan.
• Informing of results to competent authorities as the municipality of the Forest Institute (INAB). This has lead INAB to seek tools to improve the way incentives are assigned and to identify communities located in key water catchment areas.