conserving Biodiversity

Conserving Biodiversity

Lesson 3

Focus Question

What methods are used to conserve
biodiversity?

What did you see in this picture?

Multiple Choice

How do you define 'biodiversity'?

• Biology

• Living Organisms

• Variety of living organism

• Interaction between living and non-living organism

Multiple Choice

Biodiversity is valuable to humans in that

• people buy and sell living things in the pet trade and for esthetic reasons.

• living things depend on people for food, clothing, energy, medicine, and shelter.

• people depend on other living things for food, clothing, energy, medicine, and shelter.

• we have been taught at the earliest age that diversity is a good word so we use it in all endeavors.

New Vocabulary

renewable resource

nonrenewable resource

sustainable use

endemic

bioremediation

Review Vocabulary

natural resources: materials and organisms
found in the biosphere

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Natural Resources

•

The biosphere currently
supplies the basic needs for
more than seven billion
humans in the form of natural
resources.

•

The human population
continues to grow, and the
growth is not evenly
distributed.

•

An increase in human
population growth increases
the need for natural
resources.

Natural Resources

The figure below shows the natural resources used by people in different parts
of the world. Notice that people in more developed countries use more
resources, while people in less developed countries use fewer resources. As
countries become industrialized, people living there consume more resources.

Multiple Choice

People in more developed countries, like America and Europe, use less natural resources than people in less developed countries, like Africa.

• True

• False

Natural Resources

Renewable Resources
•

Those resources that are replaced by natural
processes faster than they are consumed are called
renewable resources.

Natural Resources

Nonrenewable Resources
•

Resources that are found on Earth in limited
amounts or that are replaced by natural
processes over extremely long periods of time are
called nonrenewable resources.

Multiple Select

Which of the following are examples of nonrenewable resources... (many answers)

• Fossil fuels (oil, natural gas)

• Minerals (radioactive material, etc)

• Solar

• Whole Forests

Multiple Select

Which of the following are examples of renewable resources... (multiple answers)

• Solar

• Clean air/Wind

• Oil

• Plants used for food

Natural Resources

Renewable Versus Nonrenewable Resources
•

The classification of a resource as renewable
or nonrenewable depends on the context in
which the resource is being discussed.

Natural Resources

Natural Resources

Multiple Choice

Any natural resource available in limited amounts or replaced extremely slowly by natural processes is called:

• Nonrenewable Resources

• Renewable Resources

• Endemic Resources

• Natural Resources

Multiple Choice

Any resource replaced by natural processes more quickly than it is consumed is a:

• Nonrenewable Resources

• Renewable Resources

• Endemic Resources

• Natural Resources

Natural Resources

Sustainable Use
•

Sustainable use means using
resources at a rate at which
they can be replaced or
recycled while preserving the
long-term environmental
health of the biosphere.

Multiple Choice

The use of a resource at a rate that can be replaced or recycled is called ____________ use.

• biological

• unsustainable

• sustainable

• medicinal

Protecting Biodiversity

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Protecting Biodiversity

• Many efforts are underway worldwide to

slow the loss of biodiversity and to work
toward sustainable use of natural
resources.

Protected Areas in the United States
•

The United States established its first
national park in 1872 and many more have
been established since.

International Protected Areas
•

About ten to fifteen percent of the world’s
land is set aside for some type of reserve.

Protecting Biodiversity

Biodiversity Hot Spots
•

Conservation biologists have identified locations
that are characterized by exceptional levels of

endemic

species—species that are found only in

that specific geographic area—and critical levels
of habitat loss.

Protecting Biodiversity

Multiple Choice

Biodiversity Hotspots are areas around the world where there are high levels of endemic species.

• True

• False

Multiple Choice

An ENDEMIC species is only found in one specific geographic location.

• True

• False

Protecting Biodiversity

Corridors Between Habitat Fragments
•

Ecologists are maintaining and improving
biodiversity by providing corridors that allow
organisms to move between habitat fragments.

•

Corridors don’t completely solve the problem.

Protecting Biodiversity

Protecting Biodiversity

Multiple Choice

Which is an advantage of a habitat corridor?

• Members of a species can move safely from one area to another.

• Diseases pass easily from one area to another.

• Parasites pass easily from one area to another.

• Corridors increase the edge effect in the area.

Protecting Biodiversity

Legislative Actions
•

The Endangered Species Act was enacted in 1973 in the
U.S. to legally protect at-risk species.

•

CITES (the convention on International Trade in
Endangered species (elephant tusks- rhinoceros’s horns)

•

Other laws and treaties have since been enacted to help
preserve biodiversity.

Restoring Ecosystems

•

Biological
communities
can recover,
given time.
The larger the
affected area,
the longer it
takes.

Multiple Choice

Which human-caused disaster requires the greatest recovery time?

• groundwater exploitation

• industrial pollution

• nuclear bomb

• oil spill

Multiple Choice

Which natural disaster requires the least amount of recovery time?

• lightning strike

• meteor strike

• tsunami

• volcanic eruption

Restoring Ecosystems

Bioremediation
•

The use of living organisms—such as
prokaryotes, fungi, or plants—to detoxify a
polluted area is called bioremediation.

Restoring Ecosystems

Biological Control of Invasive Species
•

Invasive species can have a profound effect on
an ecosystem’s biodiversity.

•

Introducing other organisms to an ecosystem
(for example, predators) can help control
invasive species.