Existing forested wetlands are managed for forest health and wildlife habitat.

"Innovative and extraordinary measures are needed to restore forest health in stressed forests," a summary of the new plan says.

Population monitoring efforts are undertaken every year to provide an assessment of forest health.

Of these, nine countries reported air pollution as being the principal factor responsible for weakening forest health.

Researchers have also investigated techniques for crop-tree management that both increases yields and improves forest health.

The ultimate effect on forest health is unclear, but the findings may have an immediate economic impact.

Wildfires are naturally occurring events that aid in promoting forest health.

The owl is considered an "indicator species" - its presence or absence allow experts to make deductions about forest health.

Conserve the wide array of bio-diversity through scientific management and improve habitat conditions for improved forest health.

And eliminating limits that safeguard forest health will not prevent new tragedies.