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Top-down control in ecosystems is dependent on food web structure. In this study, we developed 126 models describing different trophic link combinations in order to assess the effects of food web structure on the top-down response of shallow tropical lakes. We evaluated the effects of the presence of invertebrate predators, large-bodied herbivorous zooplankton and the degree of omnivory. The results...
Large herbivorous zooplankton and spring clear-water phases occur rarely in tropical lakes. It has been hypothesized that this can be explained by latitudinal differences in the structure of the trophic cascade. Many tropical fish species reproduce throughout the year and are omnivorous. Both properties could reduce the chances for large zooplankton to cause a clear-water phase. Continuous reproduction...
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