AI Article Synopsis
- The redundancy hypothesis suggests that having multiple species in a plant community can make it more stable, but recent studies have raised doubts about this link.
- We conducted research in Northern China's steppe grasslands to investigate how species redundancy and functional redundancy relate to community stability, particularly focusing on how resource availability affects these relationships.
- Our findings indicated that more stable plant communities have higher soil resource supply, and functional redundancy—rather than just species diversity—plays a key role in maintaining this stability, supporting the redundancy hypothesis and highlighting its importance for sustainable grassland management.
Article Abstract
Background: The redundancy hypothesis predicts that the species redundancy in a plant community enhances community stability. However, numerous studies in recent years questioned the positive correlation between redundancy and stability.
Methodology: We explored the relationship between the species redundancy, functional redundancy and community stability in typical steppe grassland in Northern China by sampling grassland vegetation along a gradient of resource availability caused by micro-topography. We aimed to test whether community redundancy enhanced community stability, and to quantify the relative importance of species redundancy and functional redundancy in maintaining community stability.
Results: Our results showed that the spatial stability of plant community production increases with increased supply of soil resources, and the functional redundancy instead of species diversity or species redundancy is correlated with the community stability. Our results supported the redundancy hypothesis and have implications for sustainable grassland management.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4689422 | PMC |
| http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0145605 | PLOS |
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