OCR AS Biology Biodiversity Definitions

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Biodiversity
the variety of life. The range of living organisms to be found
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Habitat
the place where an organism lives
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Species
A group of individual organisms ery similar in appearance, anatomy
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Habitat Diversity
range of habitats in which different species live.
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Species Diversity
the number of different species and the abundance of each species in an ecosystem.
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Genetic Diversity
The variation of alleles within species
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Species Richness
Number of species found in a habitat, no identification needed, no account of individuals. 1 daisy has as much influence as 1000 buttercups
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Species evenness
the relative number or abundance of individuals in each species
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Simpson's Index of Biodiversity
a formula used to measure biodiversity of a habitat taking into account species richness and evenness
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Transect
A line taken across a habitat
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Sweep netting
used to collect flying insects
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Pitfall trap
A trap in the ground for collection of insects, amphibians and reptiles; organisms remain stuck in the trap until it is emptied
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Tullgren funnel
captures small animals from leaf litter
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Light trap
Collects flying insects at night e.g. moths
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Other cards in this set

Card 2

Front

the place where an organism lives

Back

Habitat

Card 3

Front

A group of individual organisms ery similar in appearance, anatomy

Back

Preview of the back of card 3

Card 4

Front

range of habitats in which different species live.

Back

Preview of the back of card 4

Card 5

Front

the number of different species and the abundance of each species in an ecosystem.

Back

Preview of the back of card 5
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