Influence of plant diversity and elevated atmospheric carbon dioxide levels on belowground bacterial diversity
2006
Impact of Plant Diversity and CO2 on Soil Bacteria
Sample size: 24
publication
Evidence: moderate
Author Information
Author(s): Grüter Dominique, Schmid Bernhard, Brandl Helmut
Primary Institution: University of Zurich
Hypothesis
What is the effect of elevated CO2 and plant diversity on bacterial richness?
Conclusion
Plant diversity levels affect bacterial composition, while elevated carbon dioxide does not change bacterial richness.
Supporting Evidence
- Soil bacterial populations varied little between different experimental treatments.
- Increased CO2 levels had no significant influence on soil bacterial community composition.
- Plant diversity levels had a significant effect on bacterial composition.
Takeaway
More types of plants in an area change the types of bacteria in the soil, but adding more carbon dioxide doesn't change how many types of bacteria there are.
Methodology
Soil samples were taken from experimental plots with different plant diversity levels and CO2 treatments, and analyzed using TTGE and T-RFLP.
Limitations
The resolution of TTGE was too low for monitoring soil microbial diversity effectively.
Statistical Information
P-Value
<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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