Biodiversity Patterns of Terrestrial Mammals
Author Information
Author(s): Jorge Soberón, Gerardo Ceballos
Primary Institution: Biodiversity Institute and Department of Ecology and Evolutionary Biology, University of Kansas
Hypothesis
What is the general shape of the range-diversity plot for terrestrial mammals, and are there correspondences between different regions in the plot and geographical regions?
Conclusion
The study reveals that range-diversity plots for terrestrial mammals show significant geographic correspondences and patterns that cannot be replicated by random models.
Supporting Evidence
- The range-diversity plots show substantial internal structure with geographic correspondences.
- Regions with high species richness correspond to large continental masses.
- Patterns in the range-diversity plots cannot be distinguished from random factors.
- Mean covariances reveal geographic signatures related to species distribution.
- Null models produced by randomizing the data do not fully overlap with observed patterns.
Takeaway
This study looks at how different types of mammals are spread out across the world and finds that their distribution is not random but related to geography.
Methodology
The study used presence-absence matrices of terrestrial mammals to create range-diversity plots and analyze biodiversity patterns.
Potential Biases
Potential biases may arise from the limitations of the presence-absence matrices and the resolution of the data.
Limitations
The study does not attempt statistical inference due to the complexity of the data and its spatial autocorrelation.
Participant Demographics
The study analyzed 3,617 species of terrestrial mammals.
Statistical Information
P-Value
0.00268
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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