Natural resource inventories are surveys to learn about the location and condition of natural resources such as plants and animals, air, water, soils, and geology. These inventories help establish a baseline, and create a point of reference and comparison for the monitoring that follows. Learn more about inventories.
Each network identifies a set of ecological "vital signs" to monitor. Just as a doctor monitors our vital signs (blood pressure, pulse, or temperature) to get a picture of our overall health, ecological vital signs are a small set of resources selected to help us understand the overall health and condition of a park's resources. Learn more about monitoring.
Parks across the country have been grouped into 32 I&M 'networks,' which have been set up based on similarities in geography and natural resources. Parks within each of the networks work together, along with Inventory and Monitoring Division staff, to plan and conduct inventory projects and long-term monitoring in parks. View a map of the 32 networks and the parks in each network.