My current research attempts to apply quantitative tools, and sometimes to introduce new quantitative approaches for biologists - to develop and test theory in population, community, and macroecology. Broadly speaking, my goal is to understand the ongoing global changes and how they could affect responses/interactions from individual, population, to a community level across space and time. My research is not focused on any particular organism or study system, I combine data-driven quantitative, theoretical, and empirical approaches to understand the fundamental processes, mechanisms, and consequences of changes in various ecological levels across terrestrial and aquatic realms. It is more important for me to understand why something is happening than just reporting what is happening. To this end, my research can be broken into five main classes;