6.3 Biodiversity. AB Which do you like better? Circa 1910

6.3 Biodiversity

A B

Which do you like better?

Circa 1910

A B

Which do you like better?

Sugar cane

What do you think biodiversity means?

Bio =

Biodiversity

What does “Bio” mean?

Biodiversity

Diversity = Variety

What does “Diversity” mean?

- “The variety of life in all its forms, levels and

combinations”

- Includes:ecosystem diversity, species

diversity, and genetic diversity

There are 3 components of biodiversity

1. Diversity of genesthese are all dogs—but they're not the same because their genes are different.

Chihuahua NewfoundlandGreyhound

Diversity of species.

Hoary Bat

There are 3 components of biodiversity

Iwi Kahuli

Variety of ecosystemsEach one is different, with its own set of species living in it.

Desert Tropical Rain Forest Tiaga

There are 3 components of biodiversity

Biodiversity has Intrinsic Value

Intrinsic Value = Something that has value in and of itself

Source: Burmbaugh © AMNH-CBC

Biodiversity also has Utilitarian Value

Utilitarian Value = the value something has as a means to another’s end.

Utilitarian values include:• Goods• Services• Information

What do we get from biodiversity?

Oxygen Food Clean Water Medicine Aesthetics Ideas

Should we be concerned about biodiversity?

What we know: The Earth is losing species at an alarming rate

Some scientists estimate that as many as 3 species per hour are going extinct and 20,000 extinctions occur each year.

when species of plants and animals go extinct, many other species are affected.

Threats to biodiversity

Habitat Loss

Introduced Species

Pollution

Population Growth

Over-consumption

HIPPO Dilemma

Habitat Fragmentation

Biodiversity Hotspots

Quiz: - Mammals- Birds- Fish- Insects- Flowering Plants- Total # of

species recorded

- Estimated Total # of species in the World

4,675

9,702

23,250

751,000

421,968

1,413,000

~10 - 100 million species

Protecting Biodiversity

How can we protect biodiversity• Stop overharvesting

Sustainable yield Hunting & fishing

laws • Protect habitat

Refuges, parks, preserves

• Endangered Species Act