All the animals and plants living in the ecosystem
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Define population
The number of particular plants or animals present in the community
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Define biodiversity
The measure of the number of species in an ecosystem
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What does a kite diagram show?
The number of plants or animals against a given distance
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In artificial ecosystems, what do humans deliberately do?
Keep and protect one species. Remove any other organisms that would compete with it and lower the yield.
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Define zonation
The distribution of plants or animals into specific zones because of environmental factors.
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What are some abiotic factors?
Exposure on a sea shore, trampling on a foot path
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Define interdependent
Dependent on each other. Plants and animals are interdependent with energy being transferred from one organism to another
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What is the equation for working out the population size using the capture-recapture method?
population size = (no. in first sample x no. in second sample) / no. in second sample previously marked
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How can an estimation be more accurate?
Bigger quadrat and more samples.
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What does a capture-recapture method assume?
No deaths, no reproduction, no movement of animals in and out of the area, identical sampling methods are used for both samples, the markings do not affect the survival of the organisms
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Other cards in this set
Card 2
Front
Define population
Back
The number of particular plants or animals present in the community
Card 3
Front
Define biodiversity
Back
Card 4
Front
What does a kite diagram show?
Back
Card 5
Front
In artificial ecosystems, what do humans deliberately do?
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