Ecological Boundary Interactions examines various aspects ofenvironmental boundary interactions using metabolic networksto resolve ecological properties of microbiomes. It includes definitions of macrophyte assessment in European lakes, operationalizingsafe operating space for regional social-ecologicalsystems and social-ecological dynamics of the small scale fisheriesin Sundarbans Mangrove Forest. Provides the reader withinsights into the development of understanding of marginal changes in ecosystem itshistory and the land use suitability concept.