Symbioses are abundant in the natural world and occur in many ways, from commensal, parasitic, mutual, to name a few. These relationships are further distinguished as facultative or obligate and symmetric or asymmetric. While single species studies are conducted frequently, species interactions interacting with landscape features are not well understood. Landscape genetic approaches can be used to infer how landscape features and anthropogenic introductions affect dispersal and gene flow, which then shapes the population structure. Here I present my PhD thesis projects, which involve pitcher plant – arthropod inquiline system to understand how metacommunities are maintained spatially and temporally.