Amping up soil carbon: soil carbon stocks in California rangelands under adaptive multi-paddock and conventional grazing management

Adaptive multi-paddock (AMP) grazing is gaining attention for its potential to increase soil organic carbon (SOC), yet its efficacy on arid and semi-arid rangelands remains debated. Given the adaptive nature of AMP, on-ranch studies are essential for measuring its applied outcomes. To assess AMP’s i...

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Main Authors: Paige Stanley, Leslie Roche, Timothy Bowles
Format: Article
Language:English
Published: Taylor & Francis Group 2025-12-01
Series:International Journal of Agricultural Sustainability
Subjects:
Online Access:https://www.tandfonline.com/doi/10.1080/14735903.2025.2461826
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author Paige Stanley
Leslie Roche
Timothy Bowles
author_facet Paige Stanley
Leslie Roche
Timothy Bowles
author_sort Paige Stanley
collection DOAJ
description Adaptive multi-paddock (AMP) grazing is gaining attention for its potential to increase soil organic carbon (SOC), yet its efficacy on arid and semi-arid rangelands remains debated. Given the adaptive nature of AMP, on-ranch studies are essential for measuring its applied outcomes. To assess AMP’s impact on Mediterranean California rangelands, we collected 1,440 soil samples from four paired AMP and conventional (CONV) grazing sites across northern California. Three AMP ranches had significantly greater SOC stocks in surface soils (17% greater SOC at 0–10 cm), and two had greater SOC stocks to 100 cm (32% greater), compared to CONV ranches. The largest SOC differences occurred in the mineral-associated organic matter fraction, suggesting longer-term SOC storage. While plant community composition did not differ significantly, AMP ranches, on average, had slightly less bare ground, greater live plant cover, and two sites had 82% greater perennial grass cover. These factors may have contributed to SOC differences. Further research is needed to understand site-specific constraints, underlying mechanisms, and SOC changes over time under AMP grazing.
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series International Journal of Agricultural Sustainability
spelling doaj-art-a5bbfafc5a564ba48f97ba936fda2be12025-08-20T02:30:01ZengTaylor & Francis GroupInternational Journal of Agricultural Sustainability1473-59031747-762X2025-12-0123110.1080/14735903.2025.2461826Amping up soil carbon: soil carbon stocks in California rangelands under adaptive multi-paddock and conventional grazing managementPaige Stanley0Leslie Roche1Timothy Bowles2Department of Environmental Science, Policy and Management, University of California, Berkeley, Berkeley, CA, USADepartment of Plant Sciences, University of California, Davis, Davis, CA, USADepartment of Environmental Science, Policy and Management, University of California, Berkeley, Berkeley, CA, USAAdaptive multi-paddock (AMP) grazing is gaining attention for its potential to increase soil organic carbon (SOC), yet its efficacy on arid and semi-arid rangelands remains debated. Given the adaptive nature of AMP, on-ranch studies are essential for measuring its applied outcomes. To assess AMP’s impact on Mediterranean California rangelands, we collected 1,440 soil samples from four paired AMP and conventional (CONV) grazing sites across northern California. Three AMP ranches had significantly greater SOC stocks in surface soils (17% greater SOC at 0–10 cm), and two had greater SOC stocks to 100 cm (32% greater), compared to CONV ranches. The largest SOC differences occurred in the mineral-associated organic matter fraction, suggesting longer-term SOC storage. While plant community composition did not differ significantly, AMP ranches, on average, had slightly less bare ground, greater live plant cover, and two sites had 82% greater perennial grass cover. These factors may have contributed to SOC differences. Further research is needed to understand site-specific constraints, underlying mechanisms, and SOC changes over time under AMP grazing.https://www.tandfonline.com/doi/10.1080/14735903.2025.2461826Adaptive multi-paddock grazingCalifornia rangelandssoil carbon sequestrationsoil organic matter fractionsplant community compositiongrazing management
spellingShingle Paige Stanley
Leslie Roche
Timothy Bowles
Amping up soil carbon: soil carbon stocks in California rangelands under adaptive multi-paddock and conventional grazing management
International Journal of Agricultural Sustainability
Adaptive multi-paddock grazing
California rangelands
soil carbon sequestration
soil organic matter fractions
plant community composition
grazing management
title Amping up soil carbon: soil carbon stocks in California rangelands under adaptive multi-paddock and conventional grazing management
title_full Amping up soil carbon: soil carbon stocks in California rangelands under adaptive multi-paddock and conventional grazing management
title_fullStr Amping up soil carbon: soil carbon stocks in California rangelands under adaptive multi-paddock and conventional grazing management
title_full_unstemmed Amping up soil carbon: soil carbon stocks in California rangelands under adaptive multi-paddock and conventional grazing management
title_short Amping up soil carbon: soil carbon stocks in California rangelands under adaptive multi-paddock and conventional grazing management
title_sort amping up soil carbon soil carbon stocks in california rangelands under adaptive multi paddock and conventional grazing management
topic Adaptive multi-paddock grazing
California rangelands
soil carbon sequestration
soil organic matter fractions
plant community composition
grazing management
url https://www.tandfonline.com/doi/10.1080/14735903.2025.2461826
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