Long Creek Conceptual Model Diagram
This diagram was developed for Long Creek, a coastal plain stream in Maine. Hexagons represent sources; rectangles represent proximate stressors; ovals represent biological effects; and round-edged rectangles represent additional steps in the causal pathway.
![Figure 2-2. Simple Conceptual Model Diagram for Long Creek Maine](/sites/default/files/2015-04/caddis_fig_2-1.png)
*Note that invertebrate effects also are proximate stressors for brook trout, due to reductions in fish prey.