Forests are among the most important repositories of terrestrial biological diversity. Together, tropical, temperate and boreal forests offer very diverse habitats for plants, animals and micro-organisms. Biological diversity is the basis for a wide array of goods and services provided by forests. The variety of forest trees and shrubs play a vital role in the daily life of rural communities in many areas, as sources of wood and non-wood products, as contributors to soil and water conservation, and as repositories of aesthetic, ethical, cultural and religious values. Forest animals are a vital source of nutrition and income to many people, and have vital roles in forest ecology, such as pollination, seed predation, dispersal and germination, and predation on potential pest species.