Understanding Phylogenetic Diversity in Mediterranean Ecosystems
Author Information
Author(s): Hélène Morlon, Dylan W. Schwilk, Jessica A. Bryant, Pablo A. Marquet, Anthony G. Rebelo, Catherine Tauss, Brendan J. M. Bohannan, Jessica L. Green
Primary Institution: Center for Ecology and Evolutionary Biology, University of Oregon
Hypothesis
How does phylogenetic diversity increase with area and decay with geographic distance?
Conclusion
Phylogenetic diversity increases with area at a slower rate than species richness, and phylogenetic similarity decays with geographic distance.
Supporting Evidence
- Phylogenetic diversity increases with area in Mediterranean ecosystems.
- Communities share a greater fraction of phylogenetic diversity than species.
- The decay in phylogenetic similarity with distance is slower than that of species similarity.
Takeaway
This study looks at how the variety of species' evolutionary history changes when you look at larger areas or farther apart places.
Methodology
The study used a random model of community assembly and a spatially explicit flora dataset from four Mediterranean-type regions.
Potential Biases
Potential biases from the random assembly model not reflecting actual community structures.
Limitations
The study may not apply to ecosystems with different evolutionary histories or community structures.
Participant Demographics
Data collected from four Mediterranean-type ecosystems: Australia, California, Chile, and South Africa.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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