8/20/2019 t2 5 Ecology2-Day 5-Biodiversity

1/10

BIODIVERSITY ESSENTIAL QUESTION:

Why do you think it’s so important to have so many

different species in the world?

8/20/2019 t2 5 Ecology2-Day 5-Biodiversity

2/10

Biodiversity

As a result of

evolutionary

 processes, there is a

variety of organisms

and a variety of roles

in ecosystems.

8/20/2019 t2 5 Ecology2-Day 5-Biodiversity

3/10

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.

8/20/2019 t2 5 Ecology2-Day 5-Biodiversity

4/10

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

8/20/2019 t2 5 Ecology2-Day 5-Biodiversity

5/10

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.

8/20/2019 t2 5 Ecology2-Day 5-Biodiversity

6/10

Human Influences on Biodiversity

Human activities can,

deliberately or accidentally,

change the equilibrium in

ecosystems.

8/20/2019 t2 5 Ecology2-Day 5-Biodiversity

7/10

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)

8/20/2019 t2 5 Ecology2-Day 5-Biodiversity

8/10

8/20/2019 t2 5 Ecology2-Day 5-Biodiversity

9/10

8/20/2019 t2 5 Ecology2-Day 5-Biodiversity

10/10