6.3 biodiversity. ab which do you like better? circa 1910
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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