Old Biodiversity Case Studies
This page contains biodiversity case studies in older versions of Biodiversity
Note: Some of the items on this page may be out of date or have bad links
- 1 Ecosystem Services (original list)
- 2 Black-footed Ferret
- 3 Polar Bear
- 4 Hotspots
- 5 Mangroves
- 6 International Year of Biodiversity
- 7 Extinction
- 8 Endangered Species
- 9 Ecosystems
- 10 Reserves
- 11 Ecosystem Services
- 12 Convention on Biological Diversity
- 13 Biodiversity and Agriculture
- 14 Urban Biodiversity
- 15 Biopiracy
- 16 Darwin's Finches
Ecosystem Services (original list)
- Food and fuel - especially important for subsidence farmers and fisherman. Biodiversity acts as a safety net.
- Provision of habitat
- Medicines and biochemicals - a majority of the medicines used are derived from plant, animals, or micro-organisms
- Recreational, educational, and spiritual values - for example, hiking, fishing, gardening, forest monasteries
- Climate control - size and shape of landscape over large areas affects the local climate
- Carbon sequestering - greater species biodiversity of plants increases the amount of carbon dioxide removed from the atmosphere
- Water quantity and quality - dense vegetation reduces erosion and improves water quality
- Protection against natural disasters - complex patches of vegetation reduce flooding and can give protection from winds and sea intrusion
- Soil fertility - fast-growing, nutrient-rich plants increase soil fertility; dense root systems prevent soil erosion. Greater species diversity increases soil organic matter.
- Pollination and seed dispersal - A large number of plants require insects and other animals for pollination and seed dispersal
International Year of Biodiversity
2010 is the International Year of Biodiversity
A good case study on extinction is the Passenger Pigeon.
It was in the nineteenth century one of the most abundant birds, with some estimates at 5 billion birds. However, by 1914, the last one had died in a American zoo.
Why the sudden decline? Hunting. It was commercially hunted for its meat. Since they flew in huge flocks (millions of birds) they were easy targets.
Deforestation also contributed to their decline.
Lake Baikal - The deepest lake in the world (maximum depth = 1600 m). It holds about 20% of the world's surface fresh water.
Convention on Biological Diversity
The above articles talk about the Convention on Biological Diversity, which is an international treaty that was adopted at the 1992 Rio Earth Summit. There will be a major conference on this convention in October 2010.