Introduction

Walter Spofford, in the symposium's first paper, sets out very briefly the reasons for the existence of a resource management problem at all that is, a problem requiring some intervention by public decision-making bodies. He also sketches the history of the development of water quality and ecological system models. A substantial part of Spofford's paper is then devoted to describing and formalizing the management framework that is found useful in the work at RFF and to discussing the computational implications of various types of environmental models within that framework. Spofford's exposition of a framework for management-relevant modeling set the stage for the discussion and critique of the examples which make up the heart of the symposium. The additional modules intended to create a management module involve the effects of tourist activity on nutrient loadings entering the Lake, an exogenous input to the ecological model.