This symposium will be a plenary symposium, divided in 4 sessions: 2 in the morning, 2 in the afternoon. The following topics will be covered:
Session 1: The effect of wildfires on soil hydrological and erosion processes
- Modelling post-fire and soil erosion hazard
- Soil burn severity and its effect on post-fire runoff and erosion response
- Fire frequency and effect on post-fire runoff and erosion
- Determining the effectiveness of different treatments in reducing soil erosion after fire
- Effects of fire on soil properties, nutrient transport and vegetation growth
Session 2: Flood hazard, risk and management
- Sediment erosion, deposition, delivery and river (geo)morphology
- Channel-floodplain sediment connectivity
- Effect of land use changes on hydrological processes and soil erosion
- Modelling flood hazard and risks and soil erosion on large scale catchment
- Flood risk assessment and management
Session 3a: Soil Pollution - Nanoparticles transport and stability in the Environment
- Detection methods for nanomaterials in different environments
- Behaviour of nanoparticles in soil
- Transport of nanoparticles in soil
Session 3b: Soil Pollution - Pesticides use and transport processes in the environment
- Agriculture Land Management, Pesticides Use and Risks to the Environment and Human Health
- Pesticides behaviour and fate in the environment (soil, water, air, plants)
- Pesticides transport processes in the environment (especial focus to water and wind erosion)
- Modelling pesticides transport and fate in the environment (especial focus to water and wind erosion): challenges and progress
The effect of wildfires on soil hydrological and erosion processes.
Whilst wildfires are a natural phenomenon in Mediterranean climate regions and a key evolutionary and ecological factor in several of its ecosystems, there are widespread concerns about the resilience of even these fire-adapted ecosystems under present-day fire regimes. Unsustainable forestry land management, such as monoculture of the highly flammable species of pine and eucalyptus in the Mediterranean countries, frequently lead to severe wildfires that pose a threat to human’s life and also, to the soil and environment in general. However, wildfires are just the beginning of a major problem. The soil type, duration and intensity of fire, soil moisture and surface cover vegetation, soil repellency, among others, will highly increase the risk of soil erosion, runoff and floods after rainfall events. Therefore, it is very important to understand more deeply the dimension of this phenomenon and to develop mitigation measures to reduce soil erosion and flood risk. Increased understanding of the post-fire dynamics in areas experiencing frequent wildfire can contribute to develop effective pre- and post-fire management to protect, repair and promote recovery of affected landscapes.
Flood Hazard, risk and management.
Flooding is becoming a great concern worldwide due to climate change and its catastrophic damage to the environment and society. One single flood event could cause great failure at the river bank, sediment deposition in the floodplain and thus changes in channel morphology. Especially in highly eroded areas, such as the Loess Plateau in China, flood hazard and risk have to be studied together with sedimentation behavior. Since anthropogenic factors started to play an important role in hydrological processes, such as soil and water conservation measures, water diversion plans and dam and reservoir constructions, it is even more difficult to control flood hazards in a large scale catchment. Modeling is a popular tool for simulating flooding and soil erosion processes. However the application of flood and erosion modeling in large-scale catchment still needs to be discussed.
Nanoparticles transport and stability in the Environment.
Engineering (manufactured) nanomaterials (ENMs) have appeared to be a promising field for science and engineering that offer many new potential solutions for a variety of problems. Therefore, the production of these materials has been raised dramatically in the last few years and is expected to continue in the future. Many of these ENMs will end up in the environment through different sources, due to their increase in use. Once ENMs are released to the environment, their physical/chemical characteristics will be changed and hence, their fate, toxicity and bioavailability will depend on ENMs stability in that environment. There is a significant knowledge gap in understanding the transformation of nanomaterials according to their different physical/chemical properties. Detection of ENMs is one of the concerns, since the particle size of these ENMS are in the nano range (1-100 nm). Detection of their size, concentration and the general state in environment require specialized techniques under certain conditions and by using high resolution machines.
Pesticides use and transport processes in the environment.
Huge amounts of pesticides are applied every year worldwide, in agriculture and non-agriculture areas. Simultaneously, significant losses of soil occur every year by water and wind erosion. When these erosion phenomena occur in such pesticide-contaminated fields, erosion becomes even a major problem due to the transport of these pollutants to off-target areas, especially to water resources. However, monitoring of pesticide residues in soils and the related risk to the environment and human health is rarely practiced. Moreover, little is still known about the behaviour of pesticides in soils and their transport by water and wind erosion. Therefore, soil erosion and contamination are certainly a major concern and a serious threat to the environment and Human Health that needs to be controlled and mitigated.