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The Rainforest

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The Rainforest. What is a Rainforest? -A tropical woodland with ... Caribou, salmon, monarch butterflies, whales, etc. When do birds migrate? Migratory Birds ... – PowerPoint PPT presentation

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Title: The Rainforest


1
The Rainforest
2
What is a Rainforest?
  • -A tropical woodland with an annual rainfall of
    at least 80 inches/year

-located near the equator
-Temp. between 70oF 80oF
-Has 4 levels
3
Canopy
  • Emergent layer

Understory
Forest floor
4
Layers of the Rainforest
  • 1. Emergent layer

- Where the tallest trees are found -up to 60 m
(200 ft.) tall!!
- 1-2 trees per acre
- Above the canopy
5
- Animal Life eagles, monkeys, bats, snakes,
butterflies
  • 1. Emergent layer

- Trees have buttress roots
6
2. Canopy
  • Primary layer
  • -23 46m (75 150 ft.)

-Shields lower levels from rain and sun - 90
of photosynthesis
7
2. Canopy
  • Flowering and fruiting occurs here

- Attracts animals and insects
8
2. Canopy
  • Epiphytes- plants that grow on (are supported
    by)other plants.

9
2. Canopy
  • Extremely Diverse

Animal Life sloth, snakes, parrots, bats,
monkeys, spiders, ants, beatles, hummingbirds,
tree frogs, etc.
10
3. Understory
  • - Under the Canopy

- Dark and moist
  • Small trees, vines, palms
  • - 3.5 m (12 ft.)

11
3. Understory
  • Animal Life jaguar, leopards, lizards, frogs,
    snakes, parakeets, MOST INSECTS

12
4. Forest Floor
  • - Few plants

- buttress and prop roots
Lots of decomposition
Ex. Rate of decomposition Temperate vs.
Rainforest 1 yr. 6 weeks
13
4. Forest Floor
  • - No wind

- 90 Humidity
Animal Life Decomposers insects, worms, (fungi,
bacteria)
14
Where are the tropical rainforests?
  • - On or near the equator

Our siteThe Rift Valley of East Africa
15
What is the climate of the rainforest?
  • - Canopy 80oF

- Mild Subtropical conditions year round
Fairly constant temperature
- elevation - Temperature
16
Why are the rainforests being destroyed?
  • - People need to make money to live

- Many do not know any other way to make money
17
Why are the rainforests being destroyed?
  • - For big companies this land (wood) can be
    purchased cheaply

- Mitsubishi packing crates
18
Why are the rainforests being destroyed?
  • - Make chopsticks

- Grazing land for cattle
19
How is the rainforests important on a global
scale?
  • Plants take in CO2 and release O2
  • Animals take in O2 and release CO2

20
When the rainforests are burned it produces LOTS
of CO2
  • CO2 builds up and causes the atmosphere to trap
    heat from the Sun and warm the Earth Global
    Warming

21
What problems does cutting the rainforest cause?
  • Diversity( of species of life)is reduced
  • Animals loose their homes and may become extinct
  • Some species of plants (that may hold cures) may
    go extinct

22
What problems does cutting the rainforest cause?
  • When crops (corn) are planted good soil does not
    last long
  • Rain is not slowed down
  • Soil washes away (soil erosion)
  • Desert remains
  • Trees take a long time to grow back

23
What problems does cutting the rainforest cause?
  • Indigenous tribes are being wiped out
  • 90 Brazilian tribes are gone
  • Water cycle is changed

24
Migratory Birds
  • 9000 species of birds world wide
  • 660 species in North America

25
Migratory Birds
  • Resident birds- stay all year round
  • Migratory birds move as the seasons change

26
Migratory Birds
  • Neo-tropical Migratory Birds
  • Neo New New World
  • Tropical around the equator

27
Migration
  • Other Animals that Migrate
  • Caribou, salmon, monarch butterflies, whales, etc.

28
Migratory Birds
  • When do birds migrate?
  • Temp. (less food) birds migrate towards the
    tropics Mexico, Central America, Caribbean,
    South America
  • Temp. birds return from the tropics to nest
    (more food)

29
Migratory Birds
  • How do birds migrate?
  • Photoperiodismlength of day or night
  • Visual and auditory cues
  • Daytime migrants steer by the sun
  • Night flyers star patterns

30
Migratory Birds
  • How do birds migrate?
  • Geographic landforms -coastlines
  • - rivers
  • - mountains
  • Magnetism
  • Wind currents

31
Migratory Birds
  • How do we know they migrate?
  • Banding
  • Nest records
  • Point counts
  • Radar

32
What are some environmental threats to birds?
  • -Pesticides - DDT
  • Collisions with power lines
  • Oil spills
  • Parasites
  • Predators (mammals,birds, people)

33
What are some environmental threats to birds?
  • -Loss and fragmentation of habitat

- loss of the rainforest (their winter homes)
34
How can you save the rainforest?
  • -Sell T-shirts donate (fund raiser)

- Write letters to companies who are cutting down
the trees ask them to start a reforestation
project
  • Boycott companies that cut down the rainforest

35
How can you save the rainforest?
  • -Tourism - See the rainforest
  • - brings to the area which can be used to
    help save the rainforest
  • Buy products from the rainforest (not wood)
  • Products that can be taken without doing damage
    to the forest

36
Plants and Animals in the Rainforest
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