What is biodiversity? | Natural History Museum

Key Takeaways

• Biodiversity encompasses the total variety of all living organisms on Earth, including their complex interactions within diverse ecosystems ranging from deep oceans and forests to urban environments.
• Healthy ecosystems rely on a wide variety of species to maintain resilience, as each organism plays a specific role in supporting the stability and functionality of the entire system.
• Biodiversity provides essential life-support services for humanity, including the production of food, the purification of water, and the development of critical medicines necessary for our survival.
• Ecosystems like kelp forests demonstrate how biodiversity provides multifaceted benefits, such as protecting coastlines from erosion, capturing carbon to mitigate climate change, and sustaining complex food webs.
• The removal of even a single component from an ecosystem can trigger a collapse, illustrating how small environmental changes often lead to significant and unpredictable consequences for the entire system.
• Human activities, including habitat conversion for urban development and industrial resource extraction, are currently the primary drivers of global biodiversity loss and environmental degradation.
• Individual actions, such as reducing waste, choosing sustainable food sources, and protecting local green spaces, are essential steps toward preserving the planet's natural systems and ensuring future stability.