Navigating the possibilities and pitfalls of biocrust recovery in a changing climate

American Journal of Botany
By: , and 

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Abstract

Biological soil crusts are complex communities composed of lichens, mosses, bacteria, and cyanobacteria that create a living skin on the soil surface across drylands worldwide. Although small in size, the vast area that biocrusts cover and the critical functions they provide make them a cornerstone of dryland health and resiliency. In addition to being important, biocrusts are exceptionally vulnerable to certain types of disturbance. Although they can withstand a wide range of temperatures and long periods without precipitation, biocrusts are highly sensitive to land-use change and are vulnerable to physical and compressional disturbance (i.e., trampling, vehicles, cattle, heavy machinery). In the face of these disturbances, a critical, long-standing question of interest to dryland ecologists is: Can biocrusts recover following disturbance without active intervention. If so, how long does it take? Early estimates of biocrust recovery suggested recovery can be incredibly slow (on the order of thousands of years), with more modern studies finding potential for faster recovery, especially with intervention. Multiple lines of evidence agree that recovery is context dependent, differing across climates, soils, and with the types of disturbance and biocrust. Additionally, active restoration of biocrusts is becoming more common as tractable strategies are developed for facilitating the establishment of biocrusts after disturbance. Here, we add to the body of knowledge about biocrust recovery following disturbances by reviewing recovery patterns, their connection to climate change, considerations for recovery in changing climates, and the role of restoration.

Publication type Article
Publication Subtype Journal Article
Title Navigating the possibilities and pitfalls of biocrust recovery in a changing climate
Series title American Journal of Botany
DOI 10.1002/ajb2.70055
Volume 112
Publication Date June 19, 2025
Year Published 2025
Language English
Publisher Botanical Society of AMerica
Contributing office(s) Pacific Island Ecosystems Research Center
Description e70055, 8 p.
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