Microbes play a crucial role in Earth’s rock-to-life cycle within the critical zone, which is the area of land surface responsible for sustaining life. This relatively small but vital part of the planet spans from the bedrock to the lower atmosphere. Critical zone science focuses on understanding the intricate web of physical, chemical, and biological processes that form Earth’s life-support system. Researchers, such as biogeochemist Jon Chorover, study how chemical and mineral weathering impact the soil microbiome and carbon cycle. Recent findings from the Santa Catalina-Jemez River Basin Critical Zone Observatory highlight the connection between carbon-consuming microbes and the transformation of rock into life-sustaining soil. This research provides insights into the active role of life in shaping Earth’s evolution.
| Signal | Change | 10y horizon | Driving force |
|---|---|---|---|
| Microbes are ‘active engineers’ in Earth’s rock-to-life cycle | Recognition of the role of microbes in the critical zone | Increased understanding and integration of microbial processes in the critical zone | Advancement in critical zone science and research |
| The critical zone as Earth’s life-support system | Perception of the critical zone as Earth’s skin | Increased awareness and study of the critical zone as a vital system | Improved understanding of Earth’s ecosystems |
| The critical zone framework for Earth sciences | Holistic approach to studying Earth’s processes | Enhanced collaboration and interdisciplinary research in Earth sciences | Desire for comprehensive understanding of Earth |
| The Santa Catalina-Jemez River Basin Critical Zone Observatory | Availability of an open-air laboratory for critical zone research | Advancements in critical zone research and data collection methods | Need for real-time observations and data collection |
| Link between carbon-consuming microbes and rock-to-soil transformation | Understanding the relationship between microbial activity and soil formation | Improved management of soil ecosystems and carbon cycling | Climate change mitigation and sustainable agriculture |
| Microbial priming and mineral weathering | Relationship between soil processes and mineral weathering | Enhanced understanding of soil formation and global climate dynamics | Need for sustainable land management practices |
| Active role of life in critical zone evolution | Recognition of life as an active force in shaping the critical zone | Increased focus on the role of life in Earth’s surface processes | Desire for comprehensive understanding of Earth |