Social ecology studies the manner in which human societies adapt to th
eir environment. This includes not only the impact of the society on t
he environment, but also the impact of the environment on the society.
In fact, as societies adapt to their environment, they alter it, and
this altered environment subsequently impacts back upon the society. L
iving Systems Theory (LST) discusses twenty critical subsystems which
process either matter/energy or information in living systems, includi
ng social systems. This paper first presents a general model of social
ecology. It then concentrates upon the ten subsystems of LST which pr
ocess matter/energy, and analyzes how knowledge of these subsystem pro
cesses can be applied to our model of social ecology. These ten subsys
tems - the reproducer, boundary, ingestor, distributor, converter, pro
ducer, matter-energy storage, extruder, motor, and supporter - are all
shown to occupy key roles in ecological adaptation, and the role of e
ach is explicated. (C) 1998 John Wiley & Sons, Ltd.