Environs: A system theory of environmental networks

Open systems are partially interconnected sets of open components, with a boundary, state variables, and boundary inputs and outputs.  The portions of the components' environments lying within the system are its environs, in two orientations: output environs driven by boundary inputs, and input environs traced backward from boundary outputs.  Both are partition elements of the intra-system flow–storage network, describable within the mathematics of the system's dynamical description.  Environ analysis has five principal components: Pathway analysis, Throughflow analysis, Storage analysis, Utility analysis, and Distributed Control analysis.  Each is described and its principal ecologically significant results highlighted.