Transcript 3.1 Measuring Biodiversity (Page 89-94) Pg. 94 # 1, 3, 5 & 7
Slide 1
3.1 Measuring Biodiversity
(Page 89-94)
Pg. 94 # 1, 3, 5 & 7
Slide 2
3.1 Measuring Biodiversity
(Page 89-94)
Key Concepts: (Page 94)
• Biodiversity is the number and
variety of organisms found within a
specific region.
• Scientists have identified about 2
million species on Earth.
Slide 3
• Scientists measure biodiversity
using several methods.
• There are places on Earth where
there is an exceptionally large
numbers of species in a relatively
small area.
• Most biodiversity hotspots are in
tropical areas.
• Biodome II - Watch This!
Slide 4
3.1 Measuring Biodiversity:
1.What is biodiversity?
Biodiversity is the number and variety of
organisms found within a specific
region.
Slide 5
2. How many species are there on Earth?
There are approximately 5 to 100
million species on Earth.
3. How can an ecosystem sustain biodiversity?
An ecosystem can sustain biodiversity
only if individual species and their
habitats are protected or preserved.
Slide 6
How Do Scientists Measure Diversity:
4. List the different ways on how scientists
measure diversity.
Canopy fogging, quadrat sampling,
transect sampling, netting
Slide 7
Slide 8
5. Summarize Table 3.1:
Canopy Fogging- Effective when
counting the biodiversity of insects.
Insecticide is sprayed into the top of a
tree & when insects fall they are
collected on a screen
Quadrat Sampling- A quadrat is a
known square area that is marked
using a pre-made square. Different
species and their numbers within the
quadrat are counted.
Slide 9
• Transect sampling- Transect sampling
is done using a transect line (rope or
tape) that has been marked. The line is
unrolled within the habitat and the
number of species along the line are
recorded.
• Netting- Fine mesh nets are used to
capture birds, bats & fish. Once
captured, organisms are identified;
blood samples maybe taken for genetic
analysis & organisms are eventually
released.
Slide 10
Canada’s Biodiversity:
• 6. List any species that are native to Canada.
Red mulberry tree, Peary caribou
Slide 11
Hotspots of Biodiversity:
7. What is a biodiversity hotspot?
A biodiversity hotspot is a place where
there is exceptionally large number of
species that live in a relatively small
area.
Slide 12
8. What are the two biodiversity hotspot in
Canada?
Carolinian Canada and the Leitrim
Wetland
Slide 13
9. How many species of plants and birds
live in these areas?
Carolinian Canada - 2200 plants, 40% of
Canada’s breeding bird species
Leitrim Wetland - 200 species of plants
and 90 species of birds
Slide 14
10. How does protecting an ecosystem, such as
a wetland, help to preserve biodiversity?
Protecting an ecosystem helps
preserve biodiversity as it prevents
houses and industries from being
built. This helps to maintain an
ecosystem where a variety of species
can exist.
Slide 15
Biodiversity In The Tropics
11. Where are the biodiversity hotspots in the
tropics?
South America (Colombia), Africa
(Malawi) & Asia
Slide 16
12. Lake Malawi (in East Africa) is home to
about 1000 species of fish, many of which can
be found only at the lake.
13. Lake Erie, about the same area as Lake
Malawi, is home to about 150 species of fish.
Slide 17
14. Explain why developed countries, such as
Canada, have initiatives to help protect
ecosystems in other areas of the world.
Canada has initiatives to protect
ecosystems in developing nations because
protecting all ecosystems is important for
Earth’s biodiversity.
Slide 18
A sampling of fungi
collected during
summer 2008 in
Northern
Saskatchewan’s
mixed woods, near
LaRonge, is an
example of the
species diversity of
fungi. In this photo,
there are also leaf
lichens and
mosses.
Slide 19
The diverse
forest canopy on
Barro Colorado
Island, Panama,
yielded this
display of
different fruit.
3.1 Measuring Biodiversity
(Page 89-94)
Pg. 94 # 1, 3, 5 & 7
Slide 2
3.1 Measuring Biodiversity
(Page 89-94)
Key Concepts: (Page 94)
• Biodiversity is the number and
variety of organisms found within a
specific region.
• Scientists have identified about 2
million species on Earth.
Slide 3
• Scientists measure biodiversity
using several methods.
• There are places on Earth where
there is an exceptionally large
numbers of species in a relatively
small area.
• Most biodiversity hotspots are in
tropical areas.
• Biodome II - Watch This!
Slide 4
3.1 Measuring Biodiversity:
1.What is biodiversity?
Biodiversity is the number and variety of
organisms found within a specific
region.
Slide 5
2. How many species are there on Earth?
There are approximately 5 to 100
million species on Earth.
3. How can an ecosystem sustain biodiversity?
An ecosystem can sustain biodiversity
only if individual species and their
habitats are protected or preserved.
Slide 6
How Do Scientists Measure Diversity:
4. List the different ways on how scientists
measure diversity.
Canopy fogging, quadrat sampling,
transect sampling, netting
Slide 7
Slide 8
5. Summarize Table 3.1:
Canopy Fogging- Effective when
counting the biodiversity of insects.
Insecticide is sprayed into the top of a
tree & when insects fall they are
collected on a screen
Quadrat Sampling- A quadrat is a
known square area that is marked
using a pre-made square. Different
species and their numbers within the
quadrat are counted.
Slide 9
• Transect sampling- Transect sampling
is done using a transect line (rope or
tape) that has been marked. The line is
unrolled within the habitat and the
number of species along the line are
recorded.
• Netting- Fine mesh nets are used to
capture birds, bats & fish. Once
captured, organisms are identified;
blood samples maybe taken for genetic
analysis & organisms are eventually
released.
Slide 10
Canada’s Biodiversity:
• 6. List any species that are native to Canada.
Red mulberry tree, Peary caribou
Slide 11
Hotspots of Biodiversity:
7. What is a biodiversity hotspot?
A biodiversity hotspot is a place where
there is exceptionally large number of
species that live in a relatively small
area.
Slide 12
8. What are the two biodiversity hotspot in
Canada?
Carolinian Canada and the Leitrim
Wetland
Slide 13
9. How many species of plants and birds
live in these areas?
Carolinian Canada - 2200 plants, 40% of
Canada’s breeding bird species
Leitrim Wetland - 200 species of plants
and 90 species of birds
Slide 14
10. How does protecting an ecosystem, such as
a wetland, help to preserve biodiversity?
Protecting an ecosystem helps
preserve biodiversity as it prevents
houses and industries from being
built. This helps to maintain an
ecosystem where a variety of species
can exist.
Slide 15
Biodiversity In The Tropics
11. Where are the biodiversity hotspots in the
tropics?
South America (Colombia), Africa
(Malawi) & Asia
Slide 16
12. Lake Malawi (in East Africa) is home to
about 1000 species of fish, many of which can
be found only at the lake.
13. Lake Erie, about the same area as Lake
Malawi, is home to about 150 species of fish.
Slide 17
14. Explain why developed countries, such as
Canada, have initiatives to help protect
ecosystems in other areas of the world.
Canada has initiatives to protect
ecosystems in developing nations because
protecting all ecosystems is important for
Earth’s biodiversity.
Slide 18
A sampling of fungi
collected during
summer 2008 in
Northern
Saskatchewan’s
mixed woods, near
LaRonge, is an
example of the
species diversity of
fungi. In this photo,
there are also leaf
lichens and
mosses.
Slide 19
The diverse
forest canopy on
Barro Colorado
Island, Panama,
yielded this
display of
different fruit.