1. Biomes What are the 2 abiotic factors that determine biomes?
What type of organisms
would inhabit each biome
and what impact do
humans have on each?

2. The distribution of major terrestrial biomes
Tropical forest
Savanna
Desert
Chaparral
30ºN
Tropic of
Cancer
Temperate
grassland
Equator
Temperate
broadleaf forest
Tropic of
Capricorn
Northern
coniferous forest
30ºS
Tundra
Figure The distribution of major terrestrial biomes
High mountains
Polar ice

3. A tropical rain forest in Borneo
Figure Terrestrial biomes
For the Discovery Video Trees, go to Animation and Video Files.
A tropical rain forest in Borneo

4. A desert in the southwestern United States
Figure Terrestrial biomes
A desert in the southwestern
United States

5. A savanna in Kenya Rain and temperature are seasonal
Figure Terrestrial biomes
A savanna in Kenya
Rain and temperature are seasonal

6. Figure 52.21 Terrestrial biomes
An area of chaparral
in California

7. Chaparral
Chaparral climate is highly seasonal, with cool and rainy winters and hot dry summers.
The chaparral is dominated by shrubs, small trees, grasses, and herbs; many plants are adapted to fire and drought.
Animals include amphibians, birds and other reptiles, insects, small mammals and browsing mammals.

8. Sheyenne National Grassland in North Dakota
Figure Terrestrial biomes
Winters cold and dry, summers wet and hot

9. Taiga - Boreal Rocky Mountain National Park in Colorado
Figure Terrestrial biomes
Winters cold, summers hot

10. Temperate deciduous Forest
Great Smoky Mountains
National Park in North Carolina
Figure Terrestrial biomes

11. Tundra Denali National Park, Alaska, in autumn
Figure Terrestrial biomes
Denali National Park, Alaska,
in autumn
Tundra

13. What is population?
Describe the differences in these 3 populations.

14. Patterns of Dispersion (populations)
Clumped: organisms in patches. Usually because of environmental factors (plants clump where soil is conditions are favorable)
Uniform: formed due to direct interactions of organisms (defense)
Random: where an organism is in a population is independent of others

15. Density Independent vs. dependent factors
Density-independent factors (all populations affected regardless of size) ie: weather, natural disaster, human activities
Density-dependent factors(affect depends on size of population)
ie:competition, predation,disease
Negative feedback that regulates population growth

17. Competitive Exclusion
The role of Niche –
fundamental vs. realized
Competitive Exclusion
Fundamental niche: all the places organisms take habitat and all the things they can eat.
Realized niche: utilizing only a part of the niche they could if they were the only organism in the niche

20. Succession Primary Secondary
Primary – Sand has little to no nutrient turnover and can therefore not sustain plant life and subsequent other organisms
Secondary – After a forest fire, new low lying grasses emerge first. Small pines in the background likely emerged as a result of fire opening the cones and dropping seeds. Can see mosses and small grasses on the hill.
Secondary

21. Symbiotic Relationships
What kind of relationship? 1)
1. parasitic

22. 2) 3)
2. mutualism; 3. commensalism

23. 4) 5)
4. mutualism; 5. predator-prey

24. Human Impact & Conservation
Acid rain
Deforestation
Industrialization
Eutrophication
Hunting
Etc…
Effects on biodiversity? Conservation Efforts?