Barn Owl Productivity Response to Variability of Vole Populations

摘要: We studied the response of barn owl annual productivity to common vole population numbers and variability test effects environmental stochasticity on their life histories. Current theory predicts that temporal can affect long-term nonlinear responses (e.g., production young) both positively negatively, depending shape relationship between variables. At level Czech Republic, we examined sum fledglings (annual productivity) in non-detrended detrended data. districts’ level, explored whether degree synchrony (measured by correlation coefficient) strength increase regression areas with higher measured s-index. found owls’ increased linearly Republic. Furthermore, based district data, also dynamics reproductive output variability. However, was not affected Additionally, have shown detrending remarkably increases Taylor’s exponent b relating variance mean time series, thereby reversing coefficient variation mean. This shift responsible for Instead, suggest could result from high food specialization owls highly fluctuating populations.