Companies seeking the North American Sustainable Forestry Initiative Standard (SFIS) certification will have to meet stronger criteria introduced by the Sustainable Forestry Board.

The new measures, designed to protect biodiversity, will be applied to more than 60 million acres in the US and Canada.

The improved standards, which go beyond current federal endangered species legislation, help identify and protect imperiled species and sites on industry-managed lands in North America, combat illegal logging nationally, and promote natural forest conservation in the biodiversity hotspots and major wilderness areas around the world.