Components of global change
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![Page 1: Components of global change](https://reader035.fdocuments.net/reader035/viewer/2022062720/56813514550346895d9c6789/html5/thumbnails/1.jpg)
What are the combined effects of global climate change and biological
invasions on insect community structure?
![Page 2: Components of global change](https://reader035.fdocuments.net/reader035/viewer/2022062720/56813514550346895d9c6789/html5/thumbnails/2.jpg)
Components of global change
Habitat loss
Elevated CO2 Climate change
Invasive species
![Page 3: Components of global change](https://reader035.fdocuments.net/reader035/viewer/2022062720/56813514550346895d9c6789/html5/thumbnails/3.jpg)
Insects
Invasions Elevated CO2
![Page 4: Components of global change](https://reader035.fdocuments.net/reader035/viewer/2022062720/56813514550346895d9c6789/html5/thumbnails/4.jpg)
Insects
Invasions Elevated CO2
![Page 5: Components of global change](https://reader035.fdocuments.net/reader035/viewer/2022062720/56813514550346895d9c6789/html5/thumbnails/5.jpg)
What are the combined effects
of elevated CO2 & plant
invasions on insect community structure?
![Page 6: Components of global change](https://reader035.fdocuments.net/reader035/viewer/2022062720/56813514550346895d9c6789/html5/thumbnails/6.jpg)
![Page 7: Components of global change](https://reader035.fdocuments.net/reader035/viewer/2022062720/56813514550346895d9c6789/html5/thumbnails/7.jpg)
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Elevated [CO2] (n=2) Ambient [CO2] (n=3)
Inse
ct r
ich
nes
s
t=-9.91, df=3, p=0.002
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Elevated [CO2] Ambient [CO2]
Inse
ct a
bu
nd
ance
t=-2.61,df=2,p=0.12
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Role of plant communities?
1. Plant quality?
C:N ratios herbivory
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Box elder Goldenrod Blackberry Nepal grass Honeysuckle
C:N
rat
io
*
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Her
biv
ory
(%
)
Box elder Goldenrod Blackberry Nepal grass Honeysuckle
*
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Role of plant communities?
1. Plant quality
C:N ratios herbivory
2. Diversity
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Elevated [CO2] Ambient [CO2]
Pla
nt
rich
nes
s
t=1.06,df=1.07,p=0.48
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0 5 10 15 20
Plant richness
Inse
ct r
ich
nes
s Elevated
Ambient
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Role of plant communities?
1. Plant quality
C:N ratios herbivory
2. Diversity
3. Invasives
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Elevated [CO2] Ambient [CO2]
Ho
ney
suck
le c
ove
r (%
)df=1,t=1.79,p=0.32
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0 20 40 60 80 100
Honeysuckle cover (%)
Inse
ct r
ich
nes
sR2=0.25, p=0.02
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Insects
Invasions Elevated CO2