Biodiversity, Succession and Resources

Biodiversity, Succession and Resources

Evolutionary processes have resulted in a DIVERSITY of organisms and a diversity of roles in ecosystems.

1. BIODIVERSITY

What is Biodiversity (2:07) Qo

? Degree to which species VARY within an ecosystem

? Ask yourself?

? Which of these ecosystems has more biodiversity?

? Increased biodiversity increases the stability of an ecosystem.

? Increased biodiversity increases the chance that at least some living things will survive in the face of large changes in the environment.

A. WHY IS BIODIVERSITY SO IMPORTANT?

? The Back-up plan: ? "Backup" organisms - if one species dies due to disease, there is another one to fill the niche

? Maintains stable ecosystem: ? If lots of organism, every niche can be filled! Therefore, stable ecosystem!

? Benefits Humans!: ? Ensures a variety of genetic material ? Vast rainforests may hold cures, medicines and other useful resources!

Video on Humans impact on Biodiversity Video? 7 min



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