Priorización espacial de los servicios ecosistémicos del humedal Tubul-Raqui como insumo para la toma de decisiones en la planificación del santuario de la naturaleza Tubul-Raqui.
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Date
2025
Journal Title
Journal ISSN
Volume Title
Publisher
Universidad de Concepción
Abstract
El humedal Tubul-Raqui, ubicado en el Golfo de Arauco, tiene 2.400 hectáreas de extensión, y constituye un importante humedal para la provisión de servicios ecosistémicos de regulación, aprovisionamiento y culturales a sus habitantes aledaños. Presenta coberturas variadas, como marismas medias y bajas, y lagunas tanto dulceacuícolas como salinas, coberturas que han visto cambios en sus usos debido a causas antrópicas. El presente estudio buscó identificar las áreas de mayor valor en proveer servicios ecosistémicos en el humedal Tubul- Raqui. Para esto, se identificaron 13 servicios ecosistémicos, se evaluó con expertos la capacidad potencial de las coberturas de proveer estos servicios y se realizó una ponderación para priorizarlos. Los 13 SSEE fueron mapeados. Se obtuvo que el 10% de las zonas más prioritarias para proveer SSEE corresponden a los cuerpos de agua como zonas de marisma media y baja con lagunas, y bosque nativo con matorral mixto. Es en estos sitios donde se proveen servicios con mayor priorización según expertos, como los de provisión de agua subterránea para beber, agua utilizada como material, y el servicio de mantenimiento del ciclo hidrológico y regulación de caudales de agua. Para asegurar la continuidad de estos servicios es clave educar a la población y comprender cómo estos ecosistemas cambian espacial y temporalmente para un mejor manejo por los tomadores de decisiones.
The Tubul-Raqui wetland, is in the Gulf of Arauco and spanning approximately 2,400 hectares, is a significant coastal wetland that provides a lot of ecosystem services—regulating, maintenance, provisioning, and cultural—to nearby communities. It features diverse land cover types, including mid and low salt marshes and both freshwater and saline lagoons. These areas have undergone land-use changes due to anthropogenic pressures. This study aimed to identify the areas of highest value for ecosystem service provision within the Tubul-Raqui wetland. Thirteen ecosystem services were selected, and expert judgment was used to evaluate the potential of different land cover types to provide these services. A weighting process was then applied to support their spatial prioritization. Results indicated that the top 10% of priority areas for service provision are primarily associated with water bodies, such as mid and low marsh zones with lagoons, and native forest with mixed shrubland. According to expert evaluation, these areas are especially important for services like groundwater provision for drinking, water used as material, and the maintenance of the hydrological cycle and flow regulation. To ensure the continued provision of these ecosystem services, it is essential to promote public education and improve understanding of how these ecosystems change spatially and over time, thereby supporting more informed decision-making by stakeholders.
The Tubul-Raqui wetland, is in the Gulf of Arauco and spanning approximately 2,400 hectares, is a significant coastal wetland that provides a lot of ecosystem services—regulating, maintenance, provisioning, and cultural—to nearby communities. It features diverse land cover types, including mid and low salt marshes and both freshwater and saline lagoons. These areas have undergone land-use changes due to anthropogenic pressures. This study aimed to identify the areas of highest value for ecosystem service provision within the Tubul-Raqui wetland. Thirteen ecosystem services were selected, and expert judgment was used to evaluate the potential of different land cover types to provide these services. A weighting process was then applied to support their spatial prioritization. Results indicated that the top 10% of priority areas for service provision are primarily associated with water bodies, such as mid and low marsh zones with lagoons, and native forest with mixed shrubland. According to expert evaluation, these areas are especially important for services like groundwater provision for drinking, water used as material, and the maintenance of the hydrological cycle and flow regulation. To ensure the continued provision of these ecosystem services, it is essential to promote public education and improve understanding of how these ecosystems change spatially and over time, thereby supporting more informed decision-making by stakeholders.
Description
Tesis presentada para optar al título de Ingeniero/a en Conservación de Recursos Naturales.
Keywords
Humedales, Ecología marina, Ecosistemas