CEBA geoportail

CEBA geoportail provides aggregated eDNA metabarcoding datasets and presence/absence matrices to characterize fish assemblages and support biodiversity assessment in the aquatic ecosystems of French Guiana.

Key Features:

• Consistent eDNA dataset: Compiles eDNA sampling sites across French Guiana collected from 2014 to 2019 and is continuously updated following each collecting campaign.
• Taxon by site matrix: Provides presence/absence data for fish species inferred from eDNA samples, enabling spatial and temporal comparison of species distributions.

Scientific Applications:

• Biodiversity monitoring: Enables monitoring of changes in aquatic biodiversity over time using eDNA-derived species detections.
• Ecosystem health assessment: Uses presence or absence of specific taxa as indicators of ecosystem condition and to detect ecological disturbances.
• Stakeholder engagement: Supports informed decision-making for environmental policy and resource management in French Guiana through provision of spatial species data.

Methodology:

eDNA metabarcoding involving collection and analysis of environmental DNA fragments from samples such as water to identify species present in an ecosystem.