Mauricio Lima: Population biology, time series analysis, capture-mark-recapture statistical models, population model with age structure and stage structure, complex dynamical system (chaos), impacts of climate change (mainly focused on rainfall). Dr. Lima mainly researchers small mammals in South America (especially Chile) and his studies make conclusions about how climate change effects populations and behaviour, density-dependence in population dynamics, and system feedbacks. From his research, it is demonstrated the influence of NAO index on the population dynamics and spatial synchrony of aphids, and the relationship between the two. Research results find out that most of them are nonlinear. To be more specific, the key elements determining population fluctuations in green spruce aphid populations are non-linear feedback structure, high potential for population growth and weather condition in winter and next spring.