societal issues relating to biodiversity kath crawford & paul beaumont
TRANSCRIPT
Societal issues relating to biodiversity
Kath Crawford&
Paul Beaumont
AimsAims
To:
Promote discussion about measurement of biodiversity
Introduce methods of data analysis
Explore how such activities support A Curriculum for Excellence
Measuring biodiversityMeasuring biodiversity
1 2
6 7 8 9 10
3 4 5
Taken from: http://internt.nhm.ac.uk/eb/homepage.shtml
AimsAims
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
Species
Area No of areas where species
recorded1 2 3 4 5 6 7 8 9 10
Red admiral X X X 3
Salmon
Common newt
Adder
Song thrush X
Common shrew
X
Fox
Use the data to complete the table:
Species Area No of areas where species
recorded1 2 3 4 5 6 7 8 9 10
Red admiral X X X 3
Salmon X X X X X
Common newt
X X X X X
Adder X X X X X
Song thrush X X X X X
Common shrew
X X X X X X X
Fox X X X X
Species Area No of areas where species
recorded1 2 3 4 5 6 7 8 9 10
Red admiral X X X 3
Salmon X X X X X
Common newt
X X X X X
Adder X X X X X
Song thrush X X X X X
Common shrew
X X X X X X X
Fox X X X X
Species richness 2
Species Area No of areas where species
recorded1 2 3 4 5 6 7 8 9 10
Red admiral X X X 3
Salmon X X X X X
Common newt
X X X X X
Adder X X X X X
Song thrush X X X X X
Common shrew
X X X X X X X
Fox X X X X
Species richness 2 2 2 5 2 2 5 5 5 4
Species Area No of areas where species
recorded1 2 3 4 5 6 7 8 9 10
Red admiral X X X 3
Salmon X X X X X 5Common newt
X X X X X 5
Adder X X X X X 5
Song thrush X X X X X 5Common shrew
X X X X X X X 7
Fox X X X X 4Species richness 2 2 2 5 2 2 5 5 5 4
How do we quantify rarity?
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
Range size rarity:Species Area No of areas
where species recorded
1 2 3 4 5 6 7 8 9 10
Red admiral X X X 3Salmon X X X X X 5Common newt
X X X X X 5
Adder X X X X X 5
Song thrushX
0.20X
0.20
X0.20
X0.20
X0.20
5
Common shrew
X0.14
X0.14
X0.14
X0.14
X0.14
X0.14
X0.14
7
Fox X X X X 4Species richness 2 2 2 5 2 2 5 5 5 4Sum of range size rarity values
Range size rarity:Species Area No of areas
where species recorded
1 2 3 4 5 6 7 8 9 10
Red admiralX
0.33
X0.33
X0.33
3
SalmonX
0.20X
0.20
X0.20
X0.20
X0.20
5
Common newt
X0.20
X0.20
X0.20
X0.20
X0.20
5
AdderX
0.20X
0.20X
0.20
X0.20
X0.20 5
Song thrushX
0.20X
0.20
X0.20
X0.20
X0.20
5
Common shrew
X0.14
X0.14
X0.14
X0.14
X0.14
X0.14
X0.14
7
FoxX
0.25X
0.25
X0.25
X0.25
4Species richness 2 2 2 5 2 2 5 5 5 4Sum of range size rarity values
0.34 0.34 0.34 1.07 0.4 0.34 1.12 0.99 1.18 0.85
CladogramCladogram
Adder
Salmon
Common newt
Red admiral
Song thrushCommon shrew
Fox
CladogramCladogram
Adder
Salmon
Common newt
Red admiral
Song thrushCommon shrew
Fox
Song thrush Common shrew = 4 nodes
12
43
CladogramCladogram Red admiral --
Salmon 4 --Common newt 4 --
Adder 6 4 --Song thrush 6 5 --Common shrew 8 7 5 --
Fox 8 6 4 3 --Red
admiralSalmon
Common newt
AdderSong thrush
Common shrew
Fox
Complete your cladogram table…..
CladogramCladogram Red admiral -- 4 5 6 7 8 8
Salmon 4 -- 4 5 6 7 7Common newt 5 4 -- 4 5 6 6
Adder 6 5 4 -- 4 5 5Song thrush 7 6 5 4 -- 4 4Common shrew 8 7 6 5 4 -- 3
Fox 8 7 6 5 4 3 --Red
admiralSalmon
Common newt
AdderSong thrush
Common shrew
Fox
Taxic richness for Area 1
Combination Score
Song thrush <--> common shrew 4
Taxic richness for area 1 4
Taxic richness for Area 10Combination Score
Salmon <--> common newt 4
Salmon <--> adder 5
Salmon <--> fox 7
Common newt <--> adder 4
Common newt <--> fox 6
Adder <--> fox 5
Taxic richness for area 10 31
Species
AreaNo of areas
where species recorded1 2 3 4 5 6 7 8 9 10
Red admiralX
0.33
X0.33
X0.33
3
Salmon X0.20
X0.20
X0.20
X0.20
X0.20
5
Common newt X0.20
X0.20
X0.20
X0.20
X0.20
5
Adder X0.20
X0.20
X0.20
X0.20
X0.20
5
Song thrush X0.20
X0.20
X0.20
X0.20
X0.20
5
Common shrew
X0.14
X0.14
X0.14
X0.14
X0.14
X0.14
X0.14
7
Fox X0.25
X0.25
X0.25
X0.25
4Species richness 2 2 2 5 2 2 5 5 5 4Sum of range size rarity values
0.34 0.34 0.34 1.07 0.4 0.34 1.12 0.99 1.18 0.85
Taxic richness
Species
AreaNo of areas
where species recorded1 2 3 4 5 6 7 8 9 10
Red admiralX
0.33
X0.33
X0.33
3
Salmon X0.20
X0.20
X0.20
X0.20
X0.20
5
Common newt X0.20
X0.20
X0.20
X0.20
X0.20
5
Adder X0.20
X0.20
X0.20
X0.20
X0.20
5
Song thrush X0.20
X0.20
X0.20
X0.20
X0.20
5
Common shrew
X0.14
X0.14
X0.14
X0.14
X0.14
X0.14
X0.14
7
Fox X0.25
X0.25
X0.25
X0.25
4Species richness 2 2 2 5 2 2 5 5 5 4Sum of range size rarity values
0.34 0.34 0.34 1.07 0.4 0.34 1.12 0.99 1.18 0.85
Taxic richness4 4 4 4 31
Species
AreaNo of areas
where species recorded1 2 3 4 5 6 7 8 9 10
Red admiralX
0.33
X0.33
X0.33
3
Salmon X0.20
X0.20
X0.20
X0.20
X0.20
5
Common newt X0.20
X0.20
X0.20
X0.20
X0.20
5
Adder X0.20
X0.20
X0.20
X0.20
X0.20
5
Song thrush X0.20
X0.20
X0.20
X0.20
X0.20
5
Common shrew
X0.14
X0.14
X0.14
X0.14
X0.14
X0.14
X0.14
7
Fox X0.25
X0.25
X0.25
X0.25
4Species richness 2 2 2 5 2 2 5 5 5 4Sum of range size rarity values
0.34 0.34 0.34 1.07 0.4 0.34 1.12 0.99 1.18 0.85
Taxic richness4 4 4 54 4 4 54 52 54 31
Summary/conclusionsSummary/conclusions
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