The role of the hydrological dynamics of the Paraná River (Argentina) on aquatic and terrestrial invertebrates – Eco-hydrological and eco-toxicological approach

The maintenance of the natural complexity of an aquatic system is a key aspect for the preservation of the resource, especially in light of the multiple anthropic impacts (dams, urbanizations, plastic waste, among others) that tend to simplify morphologically and hydrologically and contaminate the fluvial environments, with negative ecological consequences for these ecosystems (O’Neill and Thorp 2011, Gasperi et al., 2014, Pazos et al., 2017). On this issue, several models and concepts have been developed that are very useful tools for understanding and managing the system. Among them are the Intermediate Disturbance Hypothesis (Connell, 1978), the Flood Pulse Concept (Junk et al., 1989), the Synthesis of the Coastal Ecosystem (Thorp et al., 2006), the Network Dynamics Hypothesis (Benda et al., 2004), the Fluvial Wave Concept (Humphries et al., 2014), among others. These models allow to quantify and better understand the geomorphological and hydrological dynamics and their effects on the ecological processes of fluvial ecosystems.

Considering the high fluvial dynamics of the Paraná River (Argentina), will be investigated its effect on the biota of environments subject to this dynamic, as are the fluvial sandy beaches on its margins. Will be selected the aquatic and terrestrial invertebrate communities that inhabit these environments, according to the hydrological phase of the river. In addition, will be determined effects and interactions between the biota and the plastic pollution present in said environments, as well as determining their potential role as hot spots of high biodiversity in the system.

Responsable scientifique

Martin BLETTER – INALI Santa Fé, Argentine

Stéphane RODRIGUES – Cités, Territoires, Environnement et Sociétés (CITERES), UMR 7324

Nicolás GARELLO – PhD student

Type de projet


Appel à projet

Bourse de thèse national

Durée du projet

2016 – 2020

Chantier thématique associé

Loire & Fleuves


© Nicolas Garello / INALI (CONICET, Santa Fé, Argentine)