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The Importance of Biodiversity

24 May 2017

What is biodiversity?

Biodiversity is the variety of all living organisms on Earth. This includes terrestrial, marine and other aquatic ecosystems and the ecological complexes which they are part of. This diversity can occur between species, within species and ecosystem level. Biodiversity is important to our existence and is valuable in its own right. It forms the foundation for an array of ecosystem services which are critical to human well-being.

Why is biodiversity important?

Biodiversity helps to boost ecosystem productivity, each species no matter what size, have their own important role to play.

A healthy biodiversity provides a number of natural services to the human population including:

  1. Ecosystem services
  • nutrient storage and recycling
  • pollution breakdown and absorption
  • soil formation and protection
  • protection of water resources
  1. Biological resources
  • Food
  • Medicinal resources and pharmaceutical drugs
  • Future resources
  • Ornamental plants
  1. Social benefits
  • Research, education and monitoring
  • Recreation and tourism
  • Cultural values

The cost of replacing these, if at all possible, would be extremely high and therefore sustaining a healthy biodiversity is important for human well-being.

A large genetic diversity also helps to prevent species extinction in the wild. In order to prevent problems that are associated with in-breeding, a variety of genes are necessary for survival. If we carry on reducing and destroying habitats as we are, interaction between species with large gene pools is going to decrease.

What are the main threats to biodiversity?

Global biodiversity is under serious threat due to a range of human activities; the list of pressures is long. The main threats to biodiversity worldwide include:


How can we improve biodiversity?

Biodiversity is threatened by society as a whole but also by our day to day actions.  Sometimes it can be difficult to make connections between what we do and the effects that this can have.

As an individual, there are changes that you can make to your day to day life that will help contribute to preserving biodiversity.

  1. Reduce, reuse and recycle waste – If we can reduce our demand for new resources then less habitat conversion/destruction and energy use will need to occur to extract and produce products
  2. Reduce use of pesticides and fertilisers – these products often run off from lawns and into surrounding environments, having adverse effects on the species living there
  3. Buy organic food – to help to reduce the input of fertilisers and pesticides to the environment
  4. Environmentally friendly cleaning products – this will help to reduce the chemical contamination of habitats during manufacturing and as they are washed down the drain
  5. Reduce single person car use – Try and use public transport where possible and look into more fuel efficient vehicles
  6. Try to conserve and reduce energy consumption at home – consider incorporating renewable energy into your home


These are just a few of the ways in which you can begin to make changes to help limit your personal impact on biodiversity loss. Whilst this is extremely important, changes also need to be made on a much larger scale.

See next week’s blog about the UK Biodiversity Action Plan (BAP), which aims to preserve biodiversity on a country-wide level.

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