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8/20/2019 t2 5 Ecology2-Day 5-Biodiversity
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BIODIVERSITY ESSENTIAL QUESTION:
Why do you think it’s so important to have so many
different species in the world?
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Biodiversity
As a result of
evolutionary
processes, there is a
variety of organisms
and a variety of roles
in ecosystems.
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Biodiversity
Biodiversity-differences among
living things in an ecosystem.
Increased biodiversity increases
the stability of the ecosystem
It provides for more genetic
variation among species.
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Why is Biodiversity necessary?
Medicine
*EX: Digitalis- derived from the foxglove
plant and is used to treat heart
conditions. *More species = more
chance of discovering something of
medical importance.
Food
Industrial products
Variet of enetic material
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Why is Biodiversity necessary?
*To maintain stable ecosystems.
* A sudden change in thebalance of a community’s
environment may cause it tobe destroyed.
*A great diversity of speciesincreases the chance that at
least some living things willsurvive with largeenvironmental changes.
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Human Influences on Biodiversity
Human activities can,
deliberately or accidentally,
change the equilibrium in
ecosystems.
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Human Influences lead to loss of
Biodiversity
-Cloning (decrease genetic material)
-Pollution
-Habitat estruction (eforestation)
-!and "se (overgra#ing$ building)
-irect Harvesting (s%ecies removal)
-&m%orted '%ecies (can be %ests)
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