PubMed | Tarangire Lion Project School for Field Studies Karatu Tanzania., Wild Nature Institute Hannover NH United States and Tanzania National Parks Arusha Tanzania.
Type: Journal Article | Journal: Ecology and evolution | Year: 2016
In long-distance migratory systems, local fluctuations in the predator-prey ratio can exhibit extreme variability within a single year depending upon the seasonal location of migratory species. Such systems offer an opportunity to empirically investigate cyclic population density effects on short-term food web interactions by taking advantage of the large seasonal shifts in migratory prey biomass.We utilized a large-mammal predator-prey savanna food web to evaluate support for hypotheses relating to the indirect effects of apparent competition and apparent mutualism from migratory ungulate herds on survival of resident megaherbivore calves, mediated by their shared predator. African lions (