Project Description

Project Context :

Mapping and characterizing submerged aquatic vegetation with conventional methods remains difficult at large scales and complicates temporal monitoring. Hydroacoustics can accurately map macrophyte distribution and estimate their density, volume, and size, but its use is still limited. The feasibility of using a low-cost sonar and species discrimination with innovative methods, such as acoustic cameras, still needs testing. Providing operational guidelines will allow the method to reach a wider specialized audience, including managers and consulting firms.

Project Objectives :

This project aims to: 1) compare surface, biovolume, or biomass metrics obtained by diving or grab/rake sampling with those from hydroacoustics; 2) develop an operational protocol for hydroacoustic macrophyte sampling; 3) explore family-level identification using acoustic cameras to overcome turbidity limits. The first year will establish foundations, test feasibility, and prepare for potential continuation (automated image analysis, innovative methods for shallow areas).

Project Results

(ongoing project)

To go further

Contact : vincent.bertrin@inrae.fr