Soil Seed Banks, Alternative Stable State Theory, and Ecosystem Resilience

In restoration ecology, the transition from desired to degraded state is based solely on the composition of the aboveground plant community, whereas belowground propagules are often neglected. We developed a conceptual framework integrating seed bank dynamics into alternative stable state theory, highlighting the important relationship between aboveground and belowground composition. This integration emphasizes the role of resilience in systems that appear to have shifted to an undesirable state. Belowground propagules, especially soil seed and bud banks, provide buffering capacity and may serve as valuable indicators of potential resistance to state transition based on the degree of similarity between belowground and aboveground vegetation composition. Ecosystem states may have multiple components that differ in their rate of change, as well as in their capacity to promote resilience. We recommend that the application of alternative stable state theory from a management perspective should incorporate components of both above- and belowground vegetation.

Automated summary

The composition of both aboveground and belowground plant communities plays a crucial role in ecosystem restoration and stability, with a current focus mainly on aboveground vegetation. Integrating seed bank dynamics into alternative stable state theory can reveal the importance of the relationship between the two, enhancing system resilience and reducing the likelihood of transitioning to undesirable states.