1. Presentation of the thematic groups
Eric FEUNTEUN University of La Rochelle

2. Role of the Scientific Committee
Ensure that the indicators are correctly setup and scientific objectives of INDICANG are met.
Glass eel recruitment (UPPA, ADERA, CEMAGREF)
Yellow eel stock indicators (CEMAGREF, CSP, Fish Pass)
Silver eel indicators (University of La Rochelle, MNCN)
Environment thematic group (IMA, CSP, EKOLUR)
Setup links between indicators in order to define synthetic indicators of the state of the stock
Setup links between catchments in order to provide a general view of the state of the stock.
Propose guidelines to setup or improve the indicators.

3. Role of the catchment “groups”
Implement indicators as defined and proposed by the scientific committee.
Provide an appraisal of the state of the stock and of the environment
Define restoration targets.
Catchment
STC
Define a methodology to improve
the knowledge
on the state of the population.
And of the environment
Thematic groups

4. Environment Indicators
Working method From biological to Environmental indicators
Glass
eels
Yellow
eels
Silver
eel
Stock assessment
Quantitative methods
Flux (nb or biomass per river and per year)
Production (kg per surface and per year)
Semi-quantitative
CPUE
Density
Presence
Quality of individuals
Contamination by pollutants
Contamination by parasites
Individual condition
Population dynamics
Mortality rates (%SPR)
Evaluation of anthropogenic mortality
Environment Indicators

5. Working method Adapt to the context in each catchment
Characteristics
Size
Types of water bodies
Social context
Fishery
Scientific survey of fishery and habitat
Development
Physical obstructions
Chemical obstructions
Status of the habitat
Quality of the water
Chemical pollutants
Water usage
Define appropriate
set of indicators
With a minimum baseline
for upscaling
Environment Indicators

6. Working method Appraise the state of the stock & Set targets
Based on historical records
Fishery
Spatial distribution
Based on intersystem comparison
Neighbouring river systems
Comparison with similar ecosystems
LINK WITH THE CATCHMENT GROUPS
Neutral
Bad
Good
Interest of Modelling issues : from data poor to data rich systems
Set reference points, and management targets...

7. Working method Implementation of regional indicators
Based on historical records
Fishery
Spatial distribution
Based on intersystem comparison
Neighbouring river systems
Comparison with similar ecosystems
LINK WITH THE CATCHMENT GROUPS