The natural world seems more complex as we discover more about it. Economic development and explosive population growth in coastal areas add to this complexity. Their direct and indirect impacts are for the most part outside the control of fisheries managers and can frustrate traditional management approaches that have been so successful in the past. Issues of overharvest and allocation are complicated by habitat alteration and loss, as well as, deterioration of water quality and loss of freshwater inflows. These are the most obvious manifestations. Others may be more subtle, affecting health and even genetic expression. Effective management decisions are becoming increasingly complex as a result. Fisheries and other resource managers are realizing that their individual success depends upon the decisions and actions of their counterparts. Working together is a daunting but necessary task. One means of helping address this complexity is an ecosystem based management approach. The Harte Model brings expertise together, through an interdisciplinary approach, to help make ecosystem based approaches reality.