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Critical Zone

Biocrust composed of mosses, lichens, and cyanobacteria
Posted inNews

Biocrust “Probiotics” Can Aid Dryland Restoration Efforts

by Derek Smith 10 January 202225 May 2022

Bacteria can speed up the growth of biocrust-forming organisms in nurseries, providing more material for restoration of degraded dryland soil.

An uprooted tree after an extreme weather event
Posted inResearch Spotlights

New Theory Connects Tree Uprooting and Sediment Movement

Aaron Sidder, freelance science writer by Aaron Sidder 19 November 202125 March 2022

Tree throw from extreme wind events plays an important role in the movement of sediment and erosion on forested hillslopes. A new theory offers a novel way to measure its impact.

Photo of the Makahiku Falls in the Haleakala National Park Maui, Hawaii
Posted inEditors' Vox

Evaluating the Impact and Reach of Biogeochemical Cycles

by K. Dontsova, Z. Balogh‐Brunstad and G. Le Roux 20 September 20211 October 2021

A new book examines flow of the elements in the biosphere from biological drivers to human influences, and explores the analytical and computational methods used to access biogeochemical cycles.

A scuba diver swims and shines a flashlight through brownish river water in a cave.
Posted inScience Updates

A New Focus on the Neglected Carbonate Critical Zone

by J. B. Martin, P. C. De Grammont, M. D. Covington and L. Toran 20 September 202128 January 2022

Studies of Earth’s critical zone have largely focused on areas underlain by silicate bedrock, leaving gaps in our understanding of widespread and vital carbonate-dominated landscapes.

Graphic illustrating how transdisciplinary, cross-site, collaborative and open science investigations work together to enable next generation innovation in critical zone science
Posted inEditors' Vox

The Future of Critical Zone Science: Call for Papers

by B. Arora, P. Sullivan, S. Kuppel, X. Yang and J. Groh 3 May 20211 October 2021

Contributions are invited to a new cross-journal special collection that describe novel advances in critical zone research, with specific consideration for transferable and broadly applicable science.

A soccer goalie dives for the ball
Posted inNews

Turf’s Dirty Little Secret

Jenessa Duncombe, Staff Writer by Jenessa Duncombe 14 April 20212 March 2023

Greenhouse gas emissions from sports fields may be scoring points for climate change.

A soil profile from the Wind River Range
Posted inEditors' Vox

Exploring the Engine and Drivers of Soil Formation

by A. G. Hunt, M. Egli and B. A. Faybishenko 26 February 20211 October 2021

A new book presents a multidisciplinary perspective on soil, exploring it as a nexus for water flow, near surface (bio)geochemistry, erosion and deposition, and biologically coupled nutrient cycling.

A conifer forest with many dead trees is seen in the foreground, with the Sierra Nevada in the background
Posted inScience Updates

Linking Critical Zone Water Storage and Ecosystems

by R. C. Bales and W. E. Dietrich 14 October 20207 March 2023

The geology and the structure of Earth’s critical zone control subsurface moisture storage potential and determine the resilience of forest and river ecosystems to drought.

Aerial view of patchwork agricultural fields in Illinois
Posted inScience Updates

Critical Agents of Change at Earth’s Surface

by P. Kumar, E. Herndon and D. D. Richter 29 September 202025 March 2022

By way of agriculture and industry, humans have major influences on the critical zone. Our past and present effects on the landscape, soil, and water will echo for a long time to come.

A hilly landscape in the Reynolds Creek Critical Zone Observatory, with charred soil in the foreground.
Posted inScience Updates

Soil Signals Tell of Landscape Disturbances

by K. A. Lohse, S. A. Billings, R. A. DiBiase, P. Kumar, A. A. Berhe and J. Kaye 24 September 202022 November 2021

The lasting influence humans have on Earth’s critical zone—and how geologic forces have mediated those influences—is revealed in studies of soil and carbon migration.

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