This work assesses the level and role of management and the morphological status of coastal dunes in Catalonia and Valencia. Ten beach-dune systems were studied to determine how management actions influence their morphological status. Results show two main groups: those without sustainable management, in an advanced erosive state, and those where sustainable management was applied, presenting good conservation status.

Inventory of defence structures built to reduce the risk of avalanches. Single and lineal structures are documented, such as artificial avalanche release systems, road barriers, breakers, deflection structures, retention nets, screens, wind baffles, deflectors, rigid and flexible barriers, retention walls, reforestation and controlled areas.

The current sanitary crisis caused by the rapid expansion of COVID-19 offered the possibility of giving respite to dune systems and allowing their natural regeneration after the effects of storm Gloria. This storm affected the Levantine and Balearic coasts between January 21 and 23, and when some systems began to recover, intensive coastal management again compromised the integrity of dune systems. The urgency to have the systems "ready" for consumption and exploitation moves away from the concept of sustainable tourism management and does not contribute to climate change adaptation. In this work, et points out some management actions on emerged beaches that have taken place during lockdown and deconfinement. The study focus on three management actions that reveal malpractice, such as leveling and mechanical cleaning, the construction of breakwaters, and the removal of Posidonia oceanica. For this, several case studies representing some of the best-preserved beach-dune systems in Catalonia and the Balearic Islands have been chosen.

This study analyzes the historical transformation and current situation of the dune landscape in Catalonia.

: Information regarding an avalanche observed in the past. Mapped based on a survey of inhabitants of the area where the phenomenon took place. The boundaries shown are based on the explanations given by the witnesses consulted. Information is usually taken from Avalanche Zones close to inhabited areas where avalanches have historically interfered with human activity. For this reason the majority of the information is found around these zones. They are shown in purple. Cartography often maps only the avalanche arrival zone, as the descriptions usually refer to their extent and the damage caused.

This study analyzes the structure and dynamics of the coastal juniper forest of Punta de la Creueta in Tarragona, comparing it with juniper forests of the island of Mallorca.

The dune system of La Pletera has been studied using unmanned aerial vehicles (UAVs) to assess the effects of sand traps and revegetation. The volumetric data obtained from UAV RGB sensors was compared with data from the previous Lidar flight.

The study analyzes changes in the forest landscape of the Costa Brava over the past century through the comparison of historical and contemporary photographs. The results show a significant increase in forest cover, with the recovery of pine and oak forests, while agricultural areas have declined. This suggests a shift in land use and in the tourist perception of the landscape.

Information regarding an area exposed to an avalanche. Mapped based on analysis of the terrain and of signs that avalanches leave in their path, mainly, in forests. In Avalanche Zones, avalanches occur frequently and are of different sizes. Avalanche Zones have been systematically mapped throughout the region. They are shown in orange. There are two types of Avalanche Zones: zones where avalanches usually follow the same path, shown in orange, and zones where avalanches usually follow different paths, shown in pale orange.

This study aims to develop high-resolution digital elevation models to quantify changes in sediment retention and dune height both pre and post construction of the fences.