Setting Priorities and Selecting Sites
In this chapter, the authors discuss how to target sampling to critical areas and wetland types, and present a procedure for selecting both natural wetlands and projects to monitor. They use their experiences studying mitigation projects to illustrate the process of setting priorities and selecting sites. The study area should bound a population of projects in as homogeneous an ecological setting as possible. In the process of setting boundaries for the study area, the definition of the population of projects is refined to include the concept of ecological setting. Most of the mitigation projects were located in the lowlands, therefore the lowlands within the Portland Metropolitan Area defined the boundaries of their study area, and only projects within that area were part of the population studied. They recommend that the populations of wetland projects and natural wetlands be stratified by land use setting so that the natural wetlands represent the various land uses surrounding the wetland projects.