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The rainforest ecosystem. Where do rainforests occur?. Why is the rainforest both an ecosystem and a biome?. A biome is An ecosystem is The rainforest is both because. What are the two main factors that affect where different biomes occur?

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why is the rainforest both an ecosystem and a biome

Why is the rainforest both an ecosystem and a biome?

A biome is

An ecosystem is

The rainforest is both because

slide4

What are the two main factors that affect where different biomes occur?

What climatic conditions do rainforests need to grow?

productivity in the rainforest
Productivity in the rainforest

What is the climate of the rainforest?

What causes it to rain so much?

slide7

Which area (Africa or Europe) did we say had the sun directly overhead?

Which area has the sun spreading out over a larger area?

Which area

is hotter then?

how do we measure biomass
How do we measure biomass?

To construct pyramids of biomass: need biomass.

To get it:

Measure mass of one organism/average of a few organisms x total of all organisms present

Biomass = total energy within a living being

So, biomass = mass of organisms – water content

(water contains no energy and is not organic)

Weigh organisms, put in hot oven, reweigh etc

2 readings the same = finish

Measured: / unit area e.g. /m2

Can do flora or fauna

Equipment: quadrat, container, oven, weighing scales.

slide12

Does a forest with four layers have more or fewer habitats than a forest with two layers?

  • If there are more habitats does that mean there are more niches?
  • If there are more niches what does that mean about species diversity?
slide14

More than 50% of the world\'s plant and animal species inhabit the 7% of the world that is covered in rainforest.A four-square mile patch of rainforest contains as many as 1500 species of flowering plants, 750 species of trees, 125 species of mammals, 400 species of birds, 100 species of reptiles, 60 species of amphibians, and 150 species of butterflies.

  • Using what you now know, explain why the rainforest has such a high species diversity.
slide16

? is the total amount of CO2 that is fixed by the plant in photosynthesis.

? is the net amount of primary production after the costs of plant respiration are included.

Therefore,NPP = GPP ? R

slide21
What role do the producers (plants) have in this ecosystem?What role do the decomposers have?What role do the consumers have?
how do we measure the number in a population
How do we measure the number in a population?

Lincoln Index

Marks animals caught

Releases them

Catches animals again

Count marked

To estimate population

slide26

Where are nutrients stored in this cycle?

Where do nutrients come from?

How can nutrients be lost from this system?

what are the energy transformations in photosynthesis and respiration what happens to light energy

What are the energy transformations in photosynthesis and respiration?What happens to light energy?

water cycle
Water cycle
  • Which of the processes are transfers and which are transformations?
what would happen if the rain became more acidic
What would happen if the rain became more acidic?

How would the productivity of the forest change?

slide40

Water cycle

  • What happens to the rain that falls in a rainforest?
  • What will happen in the short term if the trees are cut down?
  • And in the long term?
slide45

Bibliography

Youtube Video- http://www.youtube.com/watch?v=cMojw8InWKQDistribution of trpical rainforest map- http://www.greenwichschools.org/uploaded/faculty/nelyda_miguel/rainforestmap.gifSunlight distribution picture- http://www.bbc.co.uk/schools/gcsebitesize/geography/images/g_me_r_2.gifMiscellanious- http://www.blueplanetbiomes.org/rainforest.htmClimate-http://www.studygs.net/citation/mla.htmPlantlife-http://www.savetherainforest.org/savetherainforest_004.htmTemperature-http://www.blueplanetbiomes.org/rainforest.htmPictures-http://www.kidcyber.com.au/IMAGES/Rafflesialabel.jpghttp://library.thinkquest.org/TQ0310225/graphics/redplant.gifhttp://www.veeriku.tartu.ee/~ppensa/saint-orchid.jpghttp://www.savetherainforest.org/savetherainforest_004.htmhttp://www.abcteach.com/RainforestFacts/plants.htm

slide47

Fact: We lose 50 species everyday due to deforestation of tropical forests.Fact: Over 2,000 tropical forest plants have been identified as having anti-cancer properties.Fact: Less than 5 percent of the world\'s tropical forests are protected.

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