Biodiversity: What does it mean and why do we need it?

Biodiversity is in decline – but what exactly is biodiversity? The term might sound complex, but its meaning is crucial to understanding our relationship with the living world.

While “nature” encompasses everything in the world that wasn’t made by humans, biodiversity refers more specifically to the variety and variability of life.

Think of biodiversity as the incredible interconnected tapestry of life on Earth, woven from millions of species that have evolved over billions of years. 

It's the vibrant coral reefs teeming with colourful fish, the towering trees of a rainforest canopy and all the birds in the dawn chorus. But it’s also the countless insects that pollinate our crops, the myriad of tiny creatures that make our soils healthy and fertile, the still-undiscovered species that inhabit the depths of the ocean.


Why was the word ‘biodiversity’ invented?

The term "biodiversity" is a recent one, coined in 1985.

A contraction of “biological diversity”, it emerged as scientists and conservationists were becoming increasingly concerned about the rapid decline of species and habitats. Human activities were unravelling the interconnected fabric of life at an alarming rate.

Where “wildlife” makes us think of charismatic species like elephants and tigers, biodiversity goes far deeper. 

It's the invisible hand that directly and indirectly sustains all living organisms – including us. It's the bees that pollinate our food, the forests that regulate our climate and the microorganisms that purify our water. 

Biodiversity provides us with food, fuel, medicine, and even the clean air we breathe.


Biodiversity: A world of diversity within diversity

Biodiversity isn't just about the vast number of species; it's also about the incredible variety within each species and ecosystem. Here's a closer look:

Understanding biodiversity helps us appreciate the complex web of interactions that sustain life on Earth, including our own. A healthy planet with rich biodiversity provides us with the resources and services we need to thrive.


The urgency of protecting biodiversity

Our current way of life, focused on short-term economic gains, is depleting this vital resource at an alarming rate. Ignoring the diverse values of biodiversity, from climate regulation to cultural significance, puts our own future at risk.

By embracing the concept of biodiversity, we can work toward policies and actions that protect the natural world and ensure a healthy future for all living things, including ourselves.