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Definition of the black betwork for the eurometropolis of Metz, action program, and recommendation guide

Simulation (SimOïko)
Data processing
Eurometropolis of MetzInstitutional actor
December 2021
Jérémie Cornuau

The context

The concept of "dark network" aims to integrate the impact of light pollution on biodiversity into territorial planning. It seeks to protect ecological networks that are minimally impacted and to restore those most affected by fragmentation caused by artificial light.

The client

The territory of the Metz Metropolis covers 44 municipalities and an area of 306 km².
Illustration principale
Dark network map of Metz
Interpreted map of the dark network

The mission

The study consisted of:
- mapping light pollution across the territory of the metropolis.
- diagnosing its impact on species using our population dynamics simulator, SimOïko.
- spatializing the dark network.
- defining a strategy to mitigate the impacts of light.
- implementing communication and awareness-raising actions.

Customer needs

Facilitate the project process
Ensuring consultation around the project
Design appropriate management measures
Develop an action plan
Plan
Prioritize interventions
Propose actions
Awareness raising

DATA NEEDED
FOR THE STUDY

  • Light pollution mapping
  • Habitat description (under GIS)
  • Available open data (IGN, Corine...)
  • Scientific literature and expert opinions

METHODOLOGIES
USED

  • Statistical data analysis
  • Communication
  • Territorial consultation
  • Collection of expert opinion
  • Review of scientific literature
  • Fauna-flora simulation
  • GIS data analysis and processing
  • Viewing results

CONTRIBUTION FOR
THE CLIENT

The approach implemented by TerrOïko allowed for the integration of the black framework with other territorial planning documents (green and blue framework, SRADDET, SCOT, PLUi, PLU) to consider all the challenges of the territory. Additionally, the method involved co-constructing the black framework by combining the knowledge of local experts with the contributions of technological and scientific tools for data analysis and modeling (simulation of light pollution, simulation of species population dynamics).
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