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Societal issues relating to biodiversity Kath Crawford & Paul Beaumont. To: Promote discussion about measurement of biodiversity Introduce methods of data analysis Explore how such activities support A Curriculum for Excellence. Aims. Measuring biodiversity. 1. 2. 3. 4. 5. 6. 7. 8.

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Societal issues relating to biodiversity

Kath Crawford

&

Paul Beaumont


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To:

Promote discussion about measurement of biodiversity

Introduce methods of data analysis

Explore how such activities support A Curriculum for Excellence

Aims


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Measuring biodiversity

1

2

3

4

5

6

7

8

9

10

Taken from: http://internt.nhm.ac.uk/eb/homepage.shtml


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A local authority has a limited budget for conservation projects. You are asked to select one area which should be protected. So:

In groups of 6 examine the data and discuss which area(s) show the greatest biodiversity

Draw up a list of the factors which you might take into account when making your decisions

Aims


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Use the data to complete the table: projects. You are asked to select one area which should be protected. So:


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How do we quantify rarity? projects. You are asked to select one area which should be protected. So:

Define a quantity ‘Range-size rarity’, RSR,

RSR = 1/x where x is the number of areas in which a species is found to be present


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Range size rarity: projects. You are asked to select one area which should be protected. So:


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Range size rarity: projects. You are asked to select one area which should be protected. So:


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Cladogram projects. You are asked to select one area which should be protected. So:


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Cladogram projects. You are asked to select one area which should be protected. So:

Song thrush  Common shrew = 4 nodes


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Cladogram projects. You are asked to select one area which should be protected. So:


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Complete your cladogram table….. projects. You are asked to select one area which should be protected. So:


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Cladogram projects. You are asked to select one area which should be protected. So:


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Taxic richness for Area 1 projects. You are asked to select one area which should be protected. So:


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Taxic richness for Area 10 projects. You are asked to select one area which should be protected. So:


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Summary/conclusions projects. You are asked to select one area which should be protected. So:

  • Measurement of biodiversity is not trivial!

  • Before decisions about which area(s) to conserve are made, a number of factors need to be considered. These include species richness, range-size rarity and taxic richness

  • Species richness and taxic richness are useful indicators but their usefulness depends upon the quality of data collection


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