Social perceptions of ecosystem services delivered by coastal wetlands: their value and the threats they face in northwestern Mexico

Resumo

Wetlands are recognized for their socio-environmental value and capacity to provide ecosystem services (ES) that are currently threatened by diverse drivers, including those derived from climate change. These changes in the ES delivery may not be recognized by their users, and to determine the extent to which communities are aware of the presence and importance of coastal wetlands, participatory workshops were held in four coastal communities in northwestern Mexico following the Metaplan methodology. The effects produced by extreme rainfall events (as a manifestation of climate change) on wetlands and their ES, were also analyzed. Four coastal wetlands (estuaries, saltmarshes, mangroves, and lagoons) were among the most important ecosystems, while poor fishing practices, mangrove deforestation, and pollution, were identified as their main threats. Climate change, land use changes and water mismanagement, also threat wetlands. There were a few differences among communities, mostly related to the number of ES and their categories; nonetheless, saltmarshes and mangroves were priority wetlands in the communities included in this study, recognizing the ES they provide. Most of the participants in all communities coincided on the main threats and pressures facing wetlands and their ES, particularly those related to climate change, which also affect their livelihoods. But, despite the awareness, regional coastal wetlands continue to decline, considering that participatory processes are necessary for establishing the importance of wetlands while incorporating traditional knowledge, alternative actions, and novel solutions into management actions that may be scaled from the community level into regional development strategies.