ABSTRACT

Range condition describes the status of range vegetation in terms of specific values or potentials. If range condition is considered to be the existing expression of vegetation, such expression reflects in part a variable and often undocumented history of grazing by herds of livestock or wildlife. Regional or local variations in succession and climax could be worked out by local range experts, but the task of judging range condition based upon successional stages was accommodated within these few and rather gross range types. Theoretically, plant succession is an orderly and predictable vegetation change under fixed or changing environmental parameters or driving forces. Plant succession occurs at different rates and has various stages and climatic end points as functions of the environment. Under the monoclimax approach, regional climate was considered to be the most limiting factor affecting succession and climax vegetation composition.