07/22/2025
👩🔬 🌳 🪨 “When you’re walking past a tree or forest, think of where the roots are going. Sometimes, with little soil, plants are basically growing in rock fractures. It’s time to think beyond soil as the sole source of –and our study can help us do that.” - Berkeley Lab postdoc Kelsey Crutchfield-Peters and lead author of a study exploring nitrogen cycling in deep-rooted forests.
The research uncovered a significant pool of dissolved organic in a deeply weathered bedrock rhizosphere—an order of magnitude higher than in upper-layer of soils. As ecosystems face changing environmental conditions and severe disturbances, this study can help us understand where and how forests access nutrients, which is essential to informing the prediction of ecosystem function and resilience. Learn more:
At a glance, nitrogen seems to be an extremely abundant element, comprising nearly 80% of Earth’s atmosphere. But for organisms to actually access nitrogen–an essential building block for proteins, DNA molecules, and more–the element must be “fixed” by bacteria that convert atmospheric nit...