Reconstructing trophic interactions as a tool for understanding and managing ecosystems: application to a shallow eutrophic lake

摘要: Consequences of disturbance and human intervention on lake ecosystems are difficult to anticipate solely by intuition because the complex interactions that characterize communities. Understanding how structure buffers or amplifies external impacts may have beneficial effects management. In this paper, food web a moderately eutrophic (Lake Mosvatn, Norway) is reconstructed using biomanipulation in combination with loop analysis, qualitative algorithm. The outcome signed digraph predicts changes level variables for input entering system through any component. Model predictions explain observed patterns abundance, suggests graph plausible description main trophic Lake Mosvatn. As such, it used as predictive tool discuss problems related nutrient enrichment. When multiple causes responsible effects, explaining their relative co...