Difference between revisions of "Quadrat"
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| − | A [[square]] shape thrown onto the ground to count the number of a particular [[ | + | ==Key Stage 3== |
| + | ===Meaning=== | ||
| + | [[File:Quadrat.png|right|300px|thumb|A '''quadrat''' being used on sandy grassland.]] | ||
| + | A [[quadrat]] is a [[square]] shape thrown onto the ground to count the number of a particular [[plant]] within the [[square]]. | ||
| + | |||
| + | ===About Quadrats=== | ||
| + | : A [[quadrat]] can be used to [[estimate]] the coverage of a particular [[plant]] in an area but cannot be used to estimate the number of small [[animal]]s as the [[animal]]s may move from one square to another and be counted multiple times. | ||
| + | : A [[quadrat]] is used by counting the number of squares within the [[quadrat]] which contain an example of that [[plant]]. | ||
| + | |||
| + | ==Key Stage 4== | ||
| + | ===Meaning=== | ||
| + | A [[quadrat]] is a [[square]] shape placed at random locations in an [[ecosystem]] to count the number of a particular [[plant]] within the [[square]]. | ||
| + | |||
| + | ===About Quadrats=== | ||
| + | : A [[quadrat]] can be used to [[estimate]] the coverage of a particular [[plant]] in an area but cannot be used to estimate the number of small [[animal]]s as the [[animal]]s may move from one square to another and be counted multiple times. | ||
| + | : A [[quadrat]] is used by counting the number of squares within the [[quadrat]] which contain an example of that [[plant]]. | ||
| + | : Some [[ecosystem]]s change gradually from one location to another. A [[quadrat]] can be used along a [[transect]] to show how the distribution of [[plant]]s changes as you move along that line. An example where this would be used is the coast where next to the ocean there will be very little [[plant]] life but as the [[transect]] goes further inland the fraction of [[plant]]s covering the land will increase gradually. | ||
Revision as of 16:52, 18 November 2018
Key Stage 3
Meaning
A quadrat is a square shape thrown onto the ground to count the number of a particular plant within the square.
About Quadrats
- A quadrat can be used to estimate the coverage of a particular plant in an area but cannot be used to estimate the number of small animals as the animals may move from one square to another and be counted multiple times.
- A quadrat is used by counting the number of squares within the quadrat which contain an example of that plant.
Key Stage 4
Meaning
A quadrat is a square shape placed at random locations in an ecosystem to count the number of a particular plant within the square.
About Quadrats
- A quadrat can be used to estimate the coverage of a particular plant in an area but cannot be used to estimate the number of small animals as the animals may move from one square to another and be counted multiple times.
- A quadrat is used by counting the number of squares within the quadrat which contain an example of that plant.
- Some ecosystems change gradually from one location to another. A quadrat can be used along a transect to show how the distribution of plants changes as you move along that line. An example where this would be used is the coast where next to the ocean there will be very little plant life but as the transect goes further inland the fraction of plants covering the land will increase gradually.