Macrophytes play an important role in freshwater ecosystems and contribute to nutrient cycling, habitat diversity and water quality. The aim of the SWIM project is to evaluate the potentials, requirements and limitations of the photogrammetry method "Structure from Motion (SfM)" for visualizing the three-dimensional structure of submerged macrophytes in lakes.

SWIM will collect data from two lakes with different turbidity levels and vegetation types, mainly using snorkeling and boat surveys. Advanced photogrammetric techniques, including rigorous camera calibration and permanent ground control points, will ensure the accuracy of the 3D models and vegetation height maps. Expected results include detailed 3D models of underwater vegetation, maps of morphological changes and vegetation height models that provide new insights into the structural diversity of macrophytes and their ecological niches.

SWIM - as the first DGL-funded getStarted project - will improve the understanding of submerged macrophytes by utilizing the challenges and strengths of SfM photogrammetry and contributing to the improvement of habitat mapping techniques.