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Biodiversity is the whole variety of life on Earth, all species of plants and animals, their genetic variation and the habitats they are part of. It includes not just the rare or the threatened but also the wildlife that is familiar to us in the places where we live and work.
Why does biodiversity matter?
Without biodiversity we could not survive. The loss of too much habitat and too many species would threaten the functioning of our natural environment.
Biodiversity supports our lives by regulating the chemical composition of the atmosphere, soil, lakes, oceans and it can also moderate the climate.
Biodiversity provides the food we eat and can improve the quality and quantity of the water we drink. It supplies us with medicines, clothes, fuel and building materials.
Biodiversity as vegetation can assist us in defending our land, homes and businesses from floods and erosion. Biodiversity can also help to protect us from nutrient, dust and noise pollution by natural processes. Animals, fungi and bacteria help to break down some of our waste and create productive soils.
Biodiversity provides a better living environment with health, recreational and inspirational benefits. It is an important part of the tourism industry and contributes to a sense of place. It forms the natural landscapes of mountains, woodlands, wetlands and coastlines that we value so much.
The term ecosystem services describes the many benefits we get from the natural environment – products like food, fibre, wood, and water; services like pollination, nutrient cycling, soil formation, water purification, flood defence and opportunities for reflection and recreation – all are critical for our wellbeing.
Biodiversity is appreciated by many people as is shown by the large numbers that belong to or work for nature conservation organisations, record species, follow nature trails or just enjoy wildlife programmes.
The UK National Ecosytem Assessement is the first analysis of the UK's natural environment in terms of the benefits it provides to society and continuing ecomomic prosperity.
Some examples of ecosystem services in the four main categories
(adapted from MEA 2005)
| Provisioning services |
Regulating services |
Cultural services |
| Provision of goods for direct human use |
Regulation of ecosystem processes |
Non-tangible benefits |
Food
Fresh water
Timber
Fuel
Fibre |
Climate regulation
Flood regulation
Disease regulation
Pest regulation
Water regulation and purification
Pollination |
Aesthetic
Spiritual
Educational
Recreational
Sense of place
Cultural heritage |
Supporting services
Underlying processes supporting other ecosystem services eg. nutrient-cycling, soil formation, primary production, etc. |
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