CHAPTER 1 

• Supplementary material on the methodology Part I – Readme spreadsheet for the Work Package 3 database on European eel habitats, with the list of variables and information for compilation
• Supplementary material on the methodology Part II – Sources of information provided for each water body in the Work Package 3 habitat database  

CHAPTER 2 

• Additional results Part I – Current and lost wetted areas (ha) of European eel habitats by typology (cumulative and by country), total number of sites surveyed and percentage of sites for which data were not available
• Additional results Part II – Current and lost wetted areas (ha) of eel habitats by partner country (cumulative and by habitat typology), total number of sites surveyed, and percentage of sites for which data were not available 

CHAPTER 3 

• Additional results Part III – Relative contributions of sites of each habitat type to total sites providing data, by partner country and trophic status based on chlorophyll-a, total phosphorus and total nitrogen concentrations 

CHAPTER 4 

• Additional results Part IV - Final scores and reliability levels of variables relative to European eel habitats by partner country and habitat type 

CHAPTER 8 

• Supplementary material on the methodology Part III – European eel quality classes, reference values and boundary values of the quality classes for a series of heavy metals, congeners and organochlorine pesticides 
• Additional results Part V – European eel quality classes based on Anguillicola crassus infestation by partner country site 
• Additional results Part VI – List of protozoan and metazoan parasites of European eel (Anguilla anguilla) in countries based on data from the Work Package 3 database on European eel habitats and relevant literature
• Additional results Part VII – European eel quality classes based on the highly pathogenic EVEX and AngHV-1 viruses by partner country site  
• Additional results Part VIII – European eel quality classes based on EQIDIS (eel quality index for diseases; ICES, 2016) by partner country side
• Additional results Part IX – European eel quality classes based on EQICONT (eel quality index for contaminants; ICES, 2016) by partner country site  
• Additional results Part X – European eel quality classes based on EQITOT (total eel quality index; ICES, 2016) by partner country site  

CHAPTER 9 

• Supplementary material on the methodology Part IV – Questionnaire for the collection of descriptive information on European eel fishery methods in partner countries
• Supplementary material on the methodology Part V – Questionnaire for the collection of additional information on European eel fishery methods (technical features) in partner countries   

CHAPTER 11 

• Additional results Part XI – List of georeferenced fishing sites, target eel stages and fishing gear types used by fisheries
• Additional results Part XII – Annual total European eel landings (all stages) by habitat type and partner country
• Additional results Part XIII – List of georeferenced sites for which time series have been used for the analysis of production (kg/ha), including first and last years of landings data available and missing years 

CHAPTER 13 

• Supplementary material on the methodology Part VI – First questionnaire to identify European eel management measures established by partner countries at the national or regional level or as part of their eel management plans
• Supplementary material on the methodology Part VII – Second questionnaire to identify European eel management measures established by partner countries at the national or regional level or as part of their eel management plans
• Additional results Part XIV – Measures for commercial and recreational eel fisheries in place in lakes at the national and local (eel management unit, administrative region) levels, by partner country  
• Additional results Part XV – Measures for commercial and recreational eel fisheries in place in lagoons at the national and local (eel management unit, administrative region) levels, by partner country  
• Additional results Part XVI – Measures for commercial and recreational eel fisheries in place in coastal marine waters at the national and local (eel management unit, administrative region) levels, by partner country  
• Additional results Part XVII– Measures for commercial and recreational eel fisheries in place in rivers and estuaries at the national and local (eel management unit, administrative region) levels, by partner country   

CHAPTER 15 

• Supplementary material on the methodology Part VIII – Structure of the spreadsheet for the collection of information on European eel monitoring frameworks currently in place in partner countries for the purpose of compiling the Work Package 2 monitoring database
• Supplementary material on the methodology Part IX– Questionnaires for the collection of information on the methodologies currently used for European eel monitoring in partner countries
• Additional results part XVIII – Past, present, and prospective European eel monitoring programmes for each eel life stage by partner country and habitat type
• Additional results Part XIX – Geographic distribution of sites for electrofishing surveys in France, based on ONEMA, 2015 

CHAPTER 16 

• Supplementary material on the methodology Part X – Exploratory questionnaire on European eel fishery-related data collection submitted to national focal points
• Supplementary material on the methodology Part XI – First questionnaire on European eel fishery-related data collection submitted to national focal points 
• Supplementary material on the methodology Part XII – Second questionnaire on European eel fishery-related data collection submitted to national focal points