Abiotic factors

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Solar energy input
This is affected by latitude, season, cloud cover and changes in the Earth's orbit.
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Climate
This includes rainfall, temperature and wind exposure.
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Topography
This includes altitude, slope, aspect (direction that the land faces) and drainage.
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Oxygen availablity
This is most important in aquatic systems. Fast flowing rivers are often better oxygenated than stagnant pools.
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Edaphic factors
These are connected to the soil and include soil pH, mineral salt availability and soil texture. Sandy soils dry out quickly in a drought but are rarely waterlogged in wet weather. The opposite is clay which retains water well.
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Pollution
Of air, water or land.
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Catastrophes
These are infrequent events that disturb the conditions such as earthquakes, fires, floods and volcanic eruptions.
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Other cards in this set

Card 2

Front

This includes rainfall, temperature and wind exposure.

Back

Climate

Card 3

Front

This includes altitude, slope, aspect (direction that the land faces) and drainage.

Back

Preview of the back of card 3

Card 4

Front

This is most important in aquatic systems. Fast flowing rivers are often better oxygenated than stagnant pools.

Back

Preview of the back of card 4

Card 5

Front

These are connected to the soil and include soil pH, mineral salt availability and soil texture. Sandy soils dry out quickly in a drought but are rarely waterlogged in wet weather. The opposite is clay which retains water well.

Back

Preview of the back of card 5
View more cards

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