3 days to discuss the restoration and valorization of ecosystems and natural infrastructures to reduce natural risks countries are facing around the world.
The program at a glance
Wednesday, 20th September
|“Coastal erosion” plenary|
Thursday, 21st September
|Morning||“Droughts & soil erosion” plenary|
|“Pressures on water resources – Catchment basin” plenary|
|Working groups restitution|
Friday, 22nd September
|Morning||2 field visits of your choice|
|9:00-9:30 am||Welcoming Coffee and registration for the working groups
|9:30-9:40 am||Opening speech
|9:40-10:30 am||Opening plenary
Risk management by ecosystems: at the heart of a model change?
The widespread rise in temperature, rising of sea levels, changes in rainfall systems, and increase in extreme events frequency are phenomena that the scientific community wildly agrees with.
“Nature-based solutions” enable the preservation of healthy, functional and diverse ecosystems while providing a multitude of ecosystem services, including adaptation to climate change and reduction of natural hazards (such as droughts, floods, soil erosion …). These solutions, which are still little known today, require special monitoring to better analyze the results in terms of biodiversity preservation and response to natural hazards, which will provide evidence of their effectiveness. Are we revolutionizing the way we manage risks with these softer and more natural techniques?Panel discussion:
Moderator: Sarah FEUILLETTE, Chief of staff Prospective, evaluation and programming, Seine-Normandy Water Agency
|10:30-11:30 am||Solutions to mitigate coastal erosion
The rise of sea level, the increase in storm frequency and the reduction of sediment inputs at river mouths, combined with the artificialization of coasts and the subsidence of some cities, are all factors that increase the coastal vulnerability. The projects presented show how to enhance the population resilience and how to preserve certain uses in the face of the erosive force and the rising of the sea levels.Key observer: Simone SAILLANT, Deputy Director of Water and Biodiversity Direction, the french Ministry of ecological and solidarity-based transitionCase studies:
|11:30-11:45 am||Coffee break|
|11:45 am-1:15 pm||Solutions to prevent floods
The increase in heavy rainfall in certain areas and the rise in sea levels cause floods emphasized by the urban and agricultural soil sealing and the artificialization of the watercourses. The feedbacks present many services offered by wetlands including their role in floods control.Key observer: Pascal BREIL, Researcher at IRSTEA and member of the Scientific board of the International Hydrological Programme of UNESCOCase studies:
The objective of these working groups is to define the natural risk management issues of an imaginary territory, to identify a solution (or solutions) to answer these issues and to understand the main obstacles and levers to implementation.
|9:00-9:30 am||Welcoming Coffee|
|9:30-11:00 am||Solutions to combat droughts and soil erosion in agriculture
Land degradation and changes in the rainfall regime seriously threat food security in many countries. The projects present agronomic practices concerned with preserving soils and water resources in order to reconcile satisfactory agricultural yields with the preservation of ecosystems. These projects allow to feed populations and to offer multiple benefits for territories. Key observer: Khatim KHERRAZ, Executive secretary for the Sahara and Sahel Observatory Case studies:
|11:00-11:30 am||Coffee break|
|11:30 am-1:15 pm||Solutions to limit pressures on water resources on river basin
In many parts of the world, quantitative and qualitative tensions on water resources, increased by climate change, do not allow the combination of different uses: domestic, agricultural and industrial in territories. The solutions presented conciliate these different uses in an integrated water resources management and preserve resources by reforesting the watershed, stabilizing the banks or developing agro-ecological practices. Key observer: Marc BENOIT, Research director at INRA, member of the scientific committee of the Seine-Normandy water agencyCase studies:
|2:15-3:30 pm||Posters session
Around ten projects will be presented, followed by free exchanges with the speakers.
|3:30-4:30 pm||Working groups restitution|
|4:30-5:30 pm||Closing plenary
What role for biodiversity in climate action?
The Paris Accord recognizes the importance of preserving the integrity of ecosystems and inherently links adaptation of populations to climate change with the resilience of ecosystems. If climate change is one of the threats to biodiversity, ecosystems are not only victims of this upheaval: they are also part of the solutions.
It is therefore important to further integrate biodiversity into climate objectives and actions at local, national and international levels. An approach to managing natural hazards through nature-based solutions would meet the dual challenge of climate change and the preservation of biodiversity. How are these solutions perceived by decision makers and operational staff? How to strengthen the role of biodiversity in climate strategies? Panel discussion:
Moderator: Yann LAURANS, Director of the Biodiversity program at IDDRI
|5:30-5:45 pm||Closing speech
|from 6:00 pm||Cocktail|
|9:00 am-1:00 pm||Field visits Visit 1: Alternative management of rainwater in urban area (92)
The city of Asnières-sur-Seine has requested the Seine-Normandy Water Agency to assist in the implementation of alternative management of rainwater from the roads and sidewalks on the outskirts of the Town Hall. The objective is to eliminate the water supply in rainy weather to the unitary network. From now on, 64% of the surface of the forecourt is equipped with infiltrating valleys and green areas.
With an original patchwork: pond, wet meadow, bogs and reeds, the natural site hosts a unique biodiversity in Ile-de-France. But this treasure has been threatened. In the 1960’s, the north part of the marsh was a garbage dump. During 10 years, a quarry was in operation and 80% of the natural site disappeared so local authorities have mobilized to save the natural site. The marsh works like a sponge, it weights the flow into the groundwater and restitute water once purified, without pollutants and chemicals.