Biodiversity can be discussed at three levels : (i) Genetic diversity; (ii) Species diversity ; (iii) Ecosystem diversity.
1. Genetic Diversity
2. Species Diversity
3. Ecosystem Diversity
Importance of Biodiversity
Ecological Role of Biodiversity
Economic Role of Biodiversity
Scientific Role of Biodiversity
LOSS OF BIODIVERSITY
The International Union of Conservation of Nature and Natural Resources (IUCN) has classified the threatened species of plants and animals into three categories for the purpose of their conservation.
CONSERVATION OF BIODIVERSITY
The Government of India along with 155 other nations have signed the Convention of Biodiversity at the Earth Summit held at Rio de Janeiro, Brazil in June 1992. The world conservation strategy has suggested the following steps for biodiversity conservation:
Hotspots are defined according to their vegetation. Plants are important because these determine the primary productivity of an ecosystem. Most, but not all, of the hotspots rely on species-rich ecosystems for food, firewood, cropland, and income from timber. In Madagascar, for example, about 85 per cent of the plants and animals are found nowhere else in the world, Other hotspots in wealthy countries are facing different types of pressures. The islands of Hawaii have many unique plants and animals that are threatened by introduced species and land development.