National parks like Elk Island work to protect the ecosystems within their borders. To accommodate visitor and conservation related activities, changes are sometimes required, such as the repaving of a road or the renovation of an older building.

Environmental mitigations and best management practices are applied to construction projects that take place within the park, and these are closely monitored to minimize environmental impact.

One of the most important aspects of ecological integrity or park health, is having a diversity of native plant species. If a strong, native, plant community is established, native animals follow. Proper post-construction rehabilitation work restores native plant communities after an area has been disturbed by human activity.