The interactions of various organisms (pests, pathogens, invasive species) with their habitat are analysed from a fundamental or
an applied standpoint. Intraspecific relationships (chemical ecology, population dynamics, reproductive or foraging strategies,
competition) are taken into account as well as interspecific relationships (chemical ecology, population dynamics, relationships to
the host or prey, natural enemies, competitors), and the influence of various abiotic or anthropic constraints. One important
component of our approach, spatial ecology, focuses on the spatial population dynamics of various types of, and on factors which
influence their geographic propagation and/or development. This approach consists in describing, analysing and modelling the spatial
and/or temporal distribution of populations of these organisms in relation with quantitative or qualitative descriptors of the
conditions of their development, and this at variable scales. The techniques in use include uni- and multivariate spatial statistics,
modelling and simulation in a supposedly continuous spatial environment (cellular automata), or in a supposedly discrete spatial
environment (meta-population models).