Define the Spatial processes?

Environmental and integrative biology cuts across a wide array of spatial scales, and theoretical approaches that take into account these widely varying spatial scales are necessary for an understanding of the biological questions. The use of reaction diffusion equations generally has proved to be an extraordinarily powerful tool for developing insights into spatial biological processes at scales ranging from the cellular level to the ecosystem level. These equations can be utilized to link processes at one spatial scale to those at a larger spatial scale, leading to basic new insights. More recent advances involve the use of integro-difference equations, and approaches that look at developing analytical descriptors for the behaviour of stochastic spatial models.