What is an ecosystem?
A community of plants and animals that interact with each other and
their physical environment.
What are the biotic factors?
Living
Example of a decomposer?
Worm
What are the abiotic factors?
Non living
What do arrows show on food chains and webs?
Energy transfer
Example of a food chain in a pond?
Algae, tadpole, perch fish, heron
Example of a small scale ecosystem?
Hook stone Pond
What changes an ecosystem?
.Drought
.Storms
.Deforestation
How much energy is lost between each tropic level?
90%
Describe the characteristics of a
temperate deciduous forest biome?
.Found across Europe and in the USA.
* Four seasons
* These trees lose their leaves in winter and thrive in
mild and wet conditions
Describe the characteristics of the
tundra biome
- ‘The land with no trees’
- Found near the North and South poles.
- Little rainfall. Lots of permafrost
Describe the characteristics of a
coniferous forest
- Found in Scandinavia, Russia and Canada.
- Long, cold winters
- Mainly evergreen pine / spruce tre
Describe the characteristics of a
temperate grassland biome
- Found in central USA and Europe/Asia
- Moderate temperatures and rainfall
- Dominated by grasses and plants
Describe the characteristics of a
Chaparral biome (Mediterranean)
- Found around the Mediterranean Sea, around Perth in
Australia. - Hot, sunny, dry summers. Mild winter.
- Citrus trees grow.
Describe the characteristics of a
savannah grassland
- Found mainly in Africa, India, northern Australia and
central South America. - Hot all year.
- Long grasses and a few scattered trees are found in
these hot and dry conditions.
