Conceptual Models and Processes of Nutrient Cycling in Estuaries

Abstract

This paper is primarily concerned with conceptual models of nutrient cycling in estuaries. A conceptual model is largely a theoretical construction containing the essential attributes of the system. It should be no more complicated than need be to serve the intended purpose. Conceptual models are often represented by diagrams of boxes representing components and arrows between boxes representing relationships or transfer of materials or energy. These models should be connected to the real world if they are to be useful. This is most often accomplished by measurements of concentrations and rates. In this paper the author does not present a great number of rates for exchanges taking place in any estuary. It is the author's intention to present a point of departure for understanding what may happen in the Chesapeake or other estuary when it is enriched with nutrients