Framework / Assessment California Forests and Rangelands: 2015 Assessment Indicator framework for stand level evaluation and monitoring of environmentally sustainable forest management Summary Herbaceous plants on the forest floor and in rangelands are habitat an forage for many animal species. They are light/shade-sensitive, usually lost during fire, and recover quickly from disturbance, assuming climatic conditions and seeds are available. Their presence, abundance and diversity indicate a healthy forest or rangeland.