Fig. 7. The Marshes system. Key variables in the individual causal loop diagrams (CLDs) described in Figs. 3-6 collectively illustrate important connections between the subsystems. With this wider view of the system, additional feedback dynamics become visible. The loop labelled Economic Growth (R1) is linked to Pressure for Solutions (R3) via the power of the irrigation industry to lobby politicians or water agencies. The loop labelled Worldviews of Water Agencies (R2) is linked to Pressure for Solutions (R3) via the potential for policy/ management to favour irrigation over other interests. The loop labelled Conflict among Water Users (R4) is linked to Pressure for Solutions (R3) via conflict between water user groups. These links form part of the positive feedback behavior driving the system. Increasing potential for policy and management to favor irrigation decreases actions in favor of the environment (R5), while a decreasing tendency to focus on long-term sustainability decreases awareness of the seriousness of environmental issues (R5). This ultimately leads to a decrease in the capacity of the Macquarie River to withstand extreme natural events or threats from detrimental human activities.