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In this chapter, I introduce the two datasets that I use to illustrate my approach to bioassessment of freshwater ecosystems. The first, SimStreams, is simulated data from 1000 streams in two ecoregions where the biota (benthic macroinvertebrates) in each stream are affected by both the natural (ecoregion, catchment area) and human activity (farming) environments. The second is a real dataset from nearshore Great Lakes ecosystems whose biota (benthic macroinvertebrates) are affected by both the natural (Great Lake, fetch) and human activity (roads, buildings, and people) environments. After defining a conceptual model for each, I show one approach to defining and distinguishing reference and test sites in preparing to fit a Reference Condition model in Chapter 3.

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Building a Conceptual Model and Defining Reference and Test Sites

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  • 发表日期：

    2026年

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  • Robert C. Bailey

摘要

In this chapter, I introduce the two datasets that I use to illustrate my approach to bioassessment of freshwater ecosystems. The first, SimStreams, is simulated data from 1000 streams in two ecoregions where the biota (benthic macroinvertebrates) in each stream are affected by both the natural (ecoregion, catchment area) and human activity (farming) environments. The second is a real dataset from nearshore Great Lakes ecosystems whose biota (benthic macroinvertebrates) are affected by both the natural (Great Lake, fetch) and human activity (roads, buildings, and people) environments. After defining a conceptual model for each, I show one approach to defining and distinguishing reference and test sites in preparing to fit a Reference Condition model in Chapter 3.