Key points are not available for this paper at this time.
Waltner-Toews, D., and J. Kay. 2005. The evolution of an ecosystem approach: the diamond schematic and an adaptive methodology for ecosystem sustainability and health. Ecology and Society 10(1): 38. https://doi.org/10.5751/ES-01214-100138
Waltner‐Toews et al. (Sat,) studied this question.