1. Review What does ecology mean?
What are the two main components of an ecosystem?
Explain ecological succession? Use the example of death valley

2. Ecology: Biomes
Mr. DeGuzman
Biology A

3. What affects climate?
Climate in an area is affected by two main things
Direct sunlight (heat)
Precipitation

4. Biomes There are two main types of biomes
Land
Aquatic (water)
We will speed through both today

5. Land Biomes Land biomes Tropical Rain forest Tropical Dry Forest
Tropical Savanna
Desert
Temperate Grassland
Temperate Woodland and Shrubland
Temperate Forest
Northern Coniferous Forest
Boreal Forest or Taiga
Tundra

6. Tropical rain forest
Temperate grassland
Temperate forest
Tundra
Tropical dry forest
Northwestern
coniferous forest
Mountains and
ice caps
Desert
Tropical savanna
Temperate woodland
and shrubland
Boreal forest
(Taiga)

7. Ten Major Biomes
Biome
Precipitation
Temperature
Soil
Diversity
Trees
Grasses
Tropical Rain Forest
high
hot
poor
dense
sparse
Tropical Dry Forest
variable
mild
rich
moderate
medium
Tropical Savanna
clay
Desert
low
Temperate Grassland
summer hot
absent
Temperate woodland and Shrubland
summer low, winter moderate
Temperate Forest
summer moderate, winter cold
Northwestern Coniferous Forest
summer mild, winter cold
rocky, acidic
Boreal Forest
summer mild, winter cool
poor, acidic
Tundra
summer mild, winter cold

8. Aquatic biomes There are 3 main types of aquatic biomes.
Can you guess what might be the difference in the water for each biome?
Salt content
The 3 main types of aquatic biomes
Freshwater
Marine (saltwater)
Estuaries

9. Freshwater Pond Ecosystem
Section 4-4
Spoonbill
Frogs lay eggs in the shallow
water near shore.The eggs
hatch in the water as tadpoles
and move to the land as adults.
The shore is lined with grasses
that provide shelter and nesting
places for birds and other
organisms.
The roots of water lilies
cling to the pond bottom,
while their leaves, on long
flexible stems, float on the
surface.
The bottom of the pond is
inhabited by decomposers and
other organisms that feed on
particles drifting down from the
Fish share the pond
with turtles and other
animals. Many of
them feed on insects
at the water’s edge.
Plankton and the organisms that
feed on them live near the surface
where there is enough sunlight for
photosynthesis. Microscopic algae
are among the most important
producers.
Duck
Water
lilies
Frog
Dragonfly
Mosquito
larvae
Duckweed
Phytoplankton
Snail
Pickerel
Diving
beetle
Trout
Hydra
Crayfish
Snail
Benthic
crustaceans
Go to Section:

10. Figure 4-17 Zones of a Marine Ecosystem
Section 4-4
land
Photic zone
200m
Coastal
ocean
1000m
Open
ocean
4000m
Aphotic zone
6000m
Ocean
trench
10,000m
Continental
shelf
Continental slope and
continental rise
Abyssal
plain
Go to Section:

11. Tundra Tundra Located near the poles
Treeless biome covered by moss, lichens, and grasses
Permafrost – a layer of permanently frozen subsoil

13. Boreal Forest Boreal Forest or Taiga
Covered by coniferous (cone bearing) trees.
Bears, wolves, moose, elk are some of the typical animals

15. Temperate Forest Temperate forest
Plants change during the seasons (leaves change color)

17. Grasslands Grasslands
Most of the rainfall occurs in one part of the season
Hot summers, cold winters

19. Tropical Rain Forest Tropical rain forest
Receive centimeters of rain a year
Constant temperature.
Home of the most types of animals than any other biome. Many colorful

21. Deserts Deserts Less than 25 cm of rain falls a year
Both plants and animals must be able to retain moisture.
Birds, lizards, snakes, insects are typical
Cactus and sagebrush sparsely cover the area

23. Freshwater biomes
Rivers, streams, and lakes

25. Marine Biomes Includes all of the ocean
Marine biomes are divided into 4 subcategories
Intertidal zone
Neritic zone
Open-sea zone
Deep-sea zone

28. Estuaries
Estuaries are the boundaries between freshwater and saltwater.
Since it is a mix of the two, a variety of organisms can be supported.
Examples of estuaries
Delta, swamp, lagoon

30. Homework
SA 4-3 all questions
SA 4-4 all questions

31. Handout
Student led discussion

32. Biome brochure
First mini project