Atlas of European Eel Distribution (Anguilla anguilla) in Portugal, Spain and France

• Main Authors: Mateo, Maria, Drouineau, Hilaire, Pella, Herve, Beaulaton, Laurent, Amilhat, Elsa, Bardonnet, Agnès, Domingos, Isabel, Fernández-Delgado, Carlos, De Miguel Rubio, Ramon, Herrera, Mercedes, Korta, Maria, Zamora, Lluis, Díaz, Estibalitz, Briand, Cédric
• Format: Dataset
• Language: English
• Published: 2023
• Subjects: Eel; River; Atlas; GIS; Anguilla anguilla
• Online Access: https://zenodo.org/record/7546419; https://doi.org/10.5281/zenodo.7546419

DESCRIPTION --- VERSIONS version1.0.1 fixes problem with functions version1.0.2 added table dbeel_rivers.rn_rivermouth with GEREM basin, distance to Gibraltar and link to CCM. version1.0.3 fixes problem with functions version1.0.4 adds views rn_rna and rn_rne to the database --- The SUDOANG project aims at providing common tools to managers to support eel conservation in the SUDOE area (Spain, France and Portugal). VISUANG is the SUDOANG Interactive Web Application that host all these tools . The application consists of an eel distribution atlas (GT1), assessments of mortalities caused by turbines and an atlas showing obstacles to migration (GT2), estimates of recruitment and exploitation rate (GT3) and escapement (chosen as a target by the EC for the Eel Management Plans) (GT4). In addition, it includes an interactive map showing sampling results from the pilot basin network produced by GT6. The eel abundance for the eel atlas and escapement has been obtained using the Eel Density Analysis model (EDA, GT4's product). EDA extrapolates the abundance of eel in sampled river segments to other segments taking into account how the abundance, sex and size of the eels change depending on different parameters. Thus, EDA requires two main data sources: those related to the river characteristics and those related to eel abundance and characteristics. However, in both cases, data availability was uneven in the SUDOE area. In addition, this information was dispersed among several managers and in different formats due to different sampling sources: Water Framework Directive (WFD), Community Framework for the Collection, Management and Use of Data in the Fisheries Sector (EUMAP), Eel Management Plans, research groups, scientific papers and technical reports. Therefore, the first step towards having eel abundance estimations including the whole SUDOE area, was to have a joint river and eel database. In this report we will describe the database corresponding to the river’s characteristics in the SUDOE area and the eel ...