Asymmetry in Species Dispersal and Community Structure
Author Information
Author(s): Liu Jiajia, Zhou Shurong
Primary Institution: Key Laboratory of Arid and Grassland Ecology under the Ministry of Education, School of Life Sciences, Lanzhou University, Lanzhou, China
Hypothesis
Does asymmetry in species regional dispersal ability affect local community structure?
Conclusion
Asymmetric dispersal among species can reduce species richness and alter species abundance distributions compared to predictions of the neutral model.
Supporting Evidence
- Species abundance distributions are close to neutral predictions when dispersal differences are small.
- Large differences in dispersal ability can lead to decreased species richness.
- The neutral model can fit communities with asymmetric dispersal but often underestimates biodiversity.
Takeaway
This study looks at how different abilities of species to move around can change the number of species in a community and how common they are. If some species can move better than others, they might take over the community.
Methodology
The study used simulations to explore the effects of asymmetric dispersal on local community structures.
Limitations
The effects of dispersal asymmetry were found to be moderate compared to those of asymmetries in birth or death rates.
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website