Higher Extinction Risk in Tropical Plants
Author Information
Author(s): Jana C. Vamosi, Steven M. Vamosi
Primary Institution: University of Calgary
Hypothesis
Are tropical plants more susceptible to extinction compared to those in temperate regions?
Conclusion
Tropical countries face disproportionately higher extinction risks for vascular plants, even when accounting for human pressures.
Supporting Evidence
- Tropical countries have higher absolute numbers of threatened plant species.
- Species diversity did not significantly buffer against extinction risk.
- Latitude was found to be the strongest determinant of extinction risk.
Takeaway
This study found that plants in tropical areas are more likely to go extinct than those in cooler places, even if both face similar human impacts.
Methodology
The study used logistic regression to analyze the relationship between species richness and the proportion of threatened plant species across 181 countries.
Potential Biases
Potential underestimation of threatened species due to incomplete data from some countries.
Limitations
The study relies on data from the IUCN Red List, which may not fully capture the status of all plant species.
Participant Demographics
Data from 181 countries, focusing on vascular plant species.
Statistical Information
P-Value
0.016
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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