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1122

4433

55

“The higher the biodiversity, the higher the number of species, and the lower the rate of extinction. A decrease in biodiversity means a single species will become extinct and this will have a negative impact on other organisms for all organisms in an ecosystem are connected.”

http://wiki.answers.com/Q/Why_is_an_ecosystem_with_a_high_biodiversity_is_considered_to_be_more_stable_than_an_ecosystem_with_a_low_biodiversity

Ecosystems with high biodiversity should have high level of habitat diversity. This is because the greater the level of habitat diversity the greater the number of different species which can inhabit this ecosystem.

Characteristics: Greater habitat diversity means that more

species can inhabit the ecosystem Complex ecosystem various niches

Characteristics: Different nutrient and energy pathways Little human activity Minimal pollution Plentiful abiotic factors (water, light,

heat etc.) Different trophic levels

1.Pollution 4. Gazing animals2.Hunting of top carnivores 5. Climate change3.Human activities

Incident human water security threat

These maps represent only virgin forest lost. Some regrowth has occurred but not to the age,

size or extent of 1620 due to population increases and food cultivation.

1850

Today

1920 1720