Paraguay-Parana River

Impede the movement of migratory species (fragmentation)

Non-native species colonization (confounding)

Impacts of drawdown(regulation)

hydroelectricity complex

reservoirs

stations

13

28

20y of data (before and after) Different stations types

Water quality data Very little confounding factors

ccManagement

Ecology and foodwebChange in T°

Energy demand profiles

Precipitations