3.3 Threats to Biodiversity

Need to know

Why it is hard to estimate how many species there are.
What human activities contribute to extinction (HIPOC).
How the IUCN determines conservation status.
Tropical biomes are usually diverse so exploitation of them has a big impact on biodiversity.
We must find a balance between conservation and economic development.

Need to be able to

Describe three case studies (extinct, C.E., improved).
Describe threats from humans in a specific place.
Evaluate the impact of human activity.
Discuss the conflict between exploitation, sustainable development and conservation in tropical biomes.For future detail see 3.3 on the ESS syllabus.

3.3 Zoo Threats to Biodiversity

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3.3 Threats to Biodiversity

3.3-3.4 2023 Wrap Up

3.3 Case Studies

Threatened Species Case Studies

You may wish to compare your notes to those on Mr G's EE website to check for anything you might have missed.

Extension Reading

3.3 Threats to Biodiversity Notes

Reality Check: Will this be the next extinct creature?The world's last male northern white rhino has died, age 45, leaving the species "functionally extinct". What could be next?

Terrestrial food web complexity in Amazonian forests decays with habitat lossThe conversion of natural ecosystems into human-modified landscapes (HMLs) is the main driver of biodiversity loss in terrestrial ecosystems.1,2,3 Eve…

www.newscientist.com/article-topic/endangered-species/

Hope as sick last rare male rhino improvesSudan, whose future was "not looking bright", rallies slightly as his carers treat his wounds.

Invasive species blamed as second biggest cause of extinctionsA new analysis of IUCN Red List data says alien species are driving native ones extinct, but that may only be true for islands, not continents, critics say

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