Representing Ecosystem Structure through Signed Digraphs. Model Reconstruction, Qualitative Predictions and Management: The Case of a Freshwater Ecosystem

摘要: Predictions occupy a central position in environmental management. To make predictions, models are constructed and analyzed. In this framework the quantitative approach based on large simulation dominates. It has been shown various ecological contexts that relevant aspects of system's behavior may depend structure interactions. paper strategy to-reconstruct freshwater ecosystem is presented. uses statistical patterns field observations combined with qualitative algorithm, loop analysis. This procedure leads to unambiguous conclusions about system structure, although alternatives possible. The obtained then qualitatively investigated results discussed management opportunities.