EXTENSION AND ENDANGERMENT
GENETICS
Causes
Solutions
species have been identified so far
B I O
D I V E R S I T Y
Can we estimate the biodiversity of earth?
Why do we need to protect biodiversity?
How is an entire ecosystem economically valuable?
What 3 factors affect biodiversity:
How does the equator affect it?
EXTENSION AND ENDANGERMENT
Causes
Habitat destruction/fragmentation
GENETICS
DNA! Carry hereditary
information
LARGE gene pool: diversity
causes adaptations. Better
adaptive to survive changes.
Exotic species (can knockout a keystone species)
SMALL gene pool: less
adaptaive
Poaching
Pollution
Solutions
Captive breeding (released afterwards)
Preventative laws
Habitat preservation
The number of different species in an area
10-11 million species have been identified so far
B I O
Means “life”
D I V E R S I T Y
means “variety or many”
Can we estimate the biodiversity of earth? No, because we do not know all of the species we
cannot estimate the biodiversity of earth.
Why do we need to protect biodiversity? Source of beauty, has economic value, has ecological
value- when keystone species are lost it affects the entire ecosystem.
How is an entire ecosystem economically valuable? Plants and animals provide the raw
materials for life (food, clothing, medicine) not to mention oxygen
What 3 factors affect biodiversity: Area-the bigger the area the larger the biodiversity can be,
niche diversity and climate
How does the equator affect it? The closer to the equator you get the larger the diversity is
(rainforests and coral reefs). In the tropics (located around the equator) you have constant
temperature and large amounts of rainfall and sunlight. This causes lots of growth and
opportunities for adaptations.