Galdo, KesiaCajade Pascual, DanielBlanco Chao, RamónGarcía García, Jesús HoracioNieto Masot, AnaCárdenas Alonso, GemaEngelmo Moriche, Ángela2026-05-042026-05-042025Galdo, K., Cajade-Pascual, D., Blanco-Chao, R, García, H. (2025). Procesos geomorfológicos en la interfaz fluvio-marina: dinámica sedimentaria y valoración de la geodiversidad del sistema Alemparte-Riosmar (A Mariña, Lugo). En: A. Nieto Masot, G. Cárdenas Alonso, Á. Engelmo Moriche (eds.). XXIX Congreso de la Asociación Española de Geografía: Desafíos de la geografía ante el cambio global: Cáceres, 14, 15, 16 y 17 de octubre de 2025: Eje 1, Cmbio ambiental. Universidad de Extremadura (pp. 721-727)9788412956863https://hdl.handle.net/10347/47066This paper analyzes the geomorphological dynamics of the Alemparte River and Riosmar Beach, located in Foz (Lugo, NW Iberian Peninsula). The aim is to provide a scientific basis for land use and management following the principles of “know and value”. The study begins by mapping the erosional escarpment at the river-sea interface from 1956 to the present. At a finer spatial and temporal resolution, sedimentary and topographic changes between the dry (summer) and wet (winter) seasons were assessed using gravelmeters and UAV imagery. Results indicate a highly dynamic sedimentary environment at Riosmar Beach, although with a neutral balance in sediment input and output. The alluvial fans feeding the beach are directly connected to the sea through the Alemparte River, forming a significant sediment transfer corridor. The study concludes by emphasizing the need for evidencebased management of highly geodiverse landscapes.spaDerechos de autor 2026 Congresos UEx. Actas de CongresosAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/MorfodynamicGeodiversityLand managementGaliciabook part10.17398/3101-7177.1.1open access