Analysing ecological data

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  • Created by: RGV17
  • Created on: 12-08-16 18:26
What are transects used for?
They are used investigate changes in populations from one area to another.
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Explain the process of succession in a wetland?
The stems and roots of plants trap sediment which gradually builds up and forms soil. The water gets shallower around the plants which are more suited for dry-land species and they replace the marshland plants. After, only dry-land species survive.
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Explain the process of succession in hay infusions?
Water is mixed with pieces of hay. Bacteria causes the infusion to decay and a population of bacteria develops. Other unicellular organisms appear which develop from spores on the fresh hay and feed on bacteria.
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How does pH affect the hay infusion?
As the hay infusion ages, its pH changes. Different organisms appear as the pH changes. This shows succession in populations of unicellular organisms.
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What are examples of where to use transects?
Down a rocky seashore, along sand dunes or marshland.
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Explain the process of using transects?
A measuring tape, or a cord marked at regular intervals, is laid out across the area. Organisms are sampled by placing a quadrat at regular intervals along the line.
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Other cards in this set

Card 2

Front

Explain the process of succession in a wetland?

Back

The stems and roots of plants trap sediment which gradually builds up and forms soil. The water gets shallower around the plants which are more suited for dry-land species and they replace the marshland plants. After, only dry-land species survive.

Card 3

Front

Explain the process of succession in hay infusions?

Back

Preview of the front of card 3

Card 4

Front

How does pH affect the hay infusion?

Back

Preview of the front of card 4

Card 5

Front

What are examples of where to use transects?

Back

Preview of the front of card 5
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