The remaining wetlands were greatly reduced in quality during that decade. Wetlands also have a great influence over the health of the environment. This is also benefit that seems to help people more than the environment and it is easily defended by being many people's main reason for saving natural wetlands. These examples not only benefit the environment, but also seem to benefit people. However, there are still many benefits that purely help the environment.
Wetlands also play a vital role in helping wildlife survive.
The following statistics are derived from Illinois wetlands. 266 species of birds that depend on wetlands. The number of blue herons , black-crowned herons, and great egrets have increased since 1983. This is mainly due to the increased awareness about the protection of wetlands. However, the number of migratory ducks have decreased due to the destruction of naturally occurring wetlands.