Scientific advances and innovation

The Data-Map project led by the LETG laboratory

In order to secure and support the development of MRE that is attentive to the challenges of fisheries, and thus to overcome the reluctance of the fisheries sector, it therefore seems necessary to undertake in‐depth work according to four axis within the Data-Map project:

  1. developing the capacity to process “fisheries” data,
  2. analysing the modes of cartographic representation of “fisheries” data,
  3. clearing up the issue of the accumulation of spatial restriction measures imposed on fisheries and
  4. enriching the mapping by taking into account qualitative variables.
  • Understanding the Spatial Dynamics of Fisheries

There are many data sources dealing with fisheries. Among this eclectic panel of data, two data sources were chosen in order to study the spatial dynamism of fisheries: VALPENA data and VMS data.

Spatial data on fishing activities VALPENA, a project to assess fishing practices with regard to new activities carried out by fishermen’s representatives, are produced each year on a declarative and voluntary basis. The satellite data comes from the VMS system (Vessel monitoring system) and comes from a ship monitoring system.

Thus, DATA-MAP aims to combine survey data (VALPENA) and satellite data (VMS), with the aim of finely representing fishing areas.

However, both data sources each have limitations, which should be understood before combining. For example, VMS data only takes into account boats over twelve meters (except in certain special cases), which only concerns part of the French metropolitan fleet. On the other hand, VALPENA data, being survey data, may contain uncertainties. These two types of data can therefore complement each other on several points, which would allow us to obtain fisheries maps illustrating more realistically the dynamism of fisheries.

  • Analyze the modes of cartographic representation of “fishery” data

Before representing the combination of the two types of data, we will carry out a state of the art of the methods of representing fisheries. This state of the art should make an inventory of existing representation methods on fisheries.

Thus, the critical study of existing representation methods (mapping) and different types of data (GIS), will allow us to develop a reflection and a methodology. Indeed, if the methods of representing fisheries are currently limited, each map maintains a different objective, which determines the data set and the metrics used.

Using these critical observations, we will develop a method of representation that we will test, with the aim of representing the fisheries as faithfully as possible, according to the objectives set.

  • Creation of scenarios

By taking into account the scale, the two types of data and their temporality, the objective is to build cartographic hypotheses representing the relationships between fishing and MREs. Based on the different MRE life phases (construction, operation and decommissioning), the representation of the scenarios will be adapted to show the specific effects of each MRE life phase and its relationship to fisheries.

Expected technical and economic impact

The results of the Data-Map project will make it possible to consolidate the “Avoid-Reduce-Compensate” (ARC) sequence, in particular to strengthen the analysis of socio-economic impacts.

Key project milestones

  • September 2021 - Start of the project
  • October 2024 - End of the project